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All Threat Actors

APT41

Also known as: Double Dragon, BARIUM, Brass Typhoon, Wicked Panda, Winnti, LEAD, Red Kelpie, Earth Baku, Wicked Spider, Bronze Atlas, HOODOO, RedGolf, MISSION2025, UNC5221, Blackfly, Grayfly, Earth Freybug, Earth Longzhi, SparklingGoblin, UNIT2025, Leopard Typhoon

ActiveNation-StateChinaMITRE G0096
0Campaigns
74Techniques
125IOCs
98Tools
0Matches
10Infrastructure
OverviewTechniquesToolsIOCsInfrastructureReferences

Overview

APT41, also known as Double Dragon, is a unique Chinese threat actor that conducts both state-sponsored espionage operations and financially motivated cybercrime. Active since at least 2012, the group is attributed to contractors working for China's Ministry of State Security (MSS), which provides them the unusual latitude to pursue personal financial gain alongside state-directed intelligence missions. APT41 is technically sophisticated, known for deploying supply chain attacks (CCleaner 2017, ShadowPad in NetSarang 2017), targeting managed service providers, and exploiting zero-day vulnerabilities. The group has compromised software companies to inject backdoors into legitimate products, affecting millions of downstream users. The group targets an exceptionally wide range of industries including healthcare, telecommunications, technology, gaming, higher education, media, manufacturing, retail, and government sectors across Asia, Europe, and North America. In 2020, the U.S. DOJ indicted five Chinese nationals associated with APT41's operations. Despite these indictments, APT41 has continued operations, exploiting zero-days in products from Citrix, Cisco, Zoho, Fortinet, and Barracuda. Recent activity (2023-2024) includes campaigns exploiting CVE-2023-46747 (F5 BIG-IP), CVE-2024-23113 (Fortinet FortiOS), and CVE-2023-2868 (Barracuda ESG), demonstrating continued focus on edge devices and network appliances. APT41 has also been observed deploying ransomware for financial gain while simultaneously conducting espionage operations, maintaining their dual-mission profile.

Motivations

EspionageFinancial GainIntellectual Property Theft

Target Sectors

TechnologyTelecommunicationsHealthcareGamingHigher EducationTravelMediaGovernmentFinancial ServicesManufacturingPharmaceuticalRetailTransportationNonprofitGamblingThink TanksLaw FirmsAfrican Government IT ServicesPolicy OrganizationsTrade GroupsDefenseLogisticsHospitalityAviationLegalDefense Industrial BaseSemiconductorPharmaceuticalsMedia and EntertainmentAerospaceLegal ServicesSoftware DevelopmentManaged Service Providers

Activity Timeline

First Seen

Jan 2012

Last Seen

Jan 2024

Quick Facts

OriginChina
Sophisticationnation-state
StatusActive
MITRE GroupG0096

MITRE ATT&CK Techniques

(74)

Other

T1195.002

T1195.002

T1574.001

T1574.001

T1574.002

T1574.002

T1071.001

T1071.001

T1588.002

T1588.002

T1583.001

T1583.001

T1053.005

T1053.005

T1055.001

T1055.001

T1055.012

T1055.012

T1057

T1057

T1070.004

T1070.004

T1112

T1112

T1135

T1135

T1204.002

T1204.002

T1518.001

T1518.001

T1543.003

T1543.003

T1546.003

T1546.003

T1550.002

T1550.002

T1560.001

T1560.001

T1562.001

T1562.001

T1569.002

T1569.002

T1078.003

T1078.003

T1091

T1091

T1199

T1199

T1210

T1210

T1505.003

T1505.003

T1136.001

T1136.001

T1218.011

T1218.011

T1071.004

T1071.004

T1594

T1594

T1595.002

T1595.002

T1059.004

T1059.004

T1132.001

T1132.001

T1132.002

T1132.002

T1537

T1537

T1102.002

T1102.002

T1498

T1498

T1584.004

T1584.004

T1207

T1207

T1556.004

T1556.004

T1552.001

T1552.001

T1606.002

T1606.002

Initial Access

T1190

Exploit Public-Facing Application

Exploit vulnerabilities in internet-facing applications to gain access.

T1133

External Remote Services

Abuse remote services like VPNs or RDP to gain access to the network.

T1189

Drive-by Compromise

Gain access through a user visiting a compromised website during normal browsing.

T1566.001

Spearphishing Attachment

Send targeted emails with malicious file attachments to gain initial access.

T1078

Valid Accounts

Use legitimate credentials to authenticate and gain access.

Execution

T1059.001

PowerShell

Use PowerShell commands and scripts for execution and automation.

T1059.003

Windows Command Shell

Use cmd.exe to execute commands and batch scripts.

T1047

Windows Management Instrumentation

Use WMI to execute commands and manage systems remotely.

Defense Evasion

T1055

Process Injection

Inject code into running processes to evade defenses and elevate privileges.

T1027

Obfuscated Files or Information

Encrypt, encode, or obfuscate payloads and data to evade detection.

T1140

Deobfuscate/Decode Files or Information

Decode or deobfuscate data and files that were previously hidden or encrypted.

T1036

Masquerading

Disguise malicious artifacts by manipulating names or locations to appear legitimate.

Credential Access

T1003.001

LSASS Memory

Access LSASS process memory to extract credential material.

Collection

T1005

Data from Local System

Collect sensitive data stored on the local file system.

T1114

Email Collection

Collect email messages from mailboxes or mail servers.

Exfiltration

T1041

Exfiltration Over C2 Channel

Exfiltrate stolen data over the existing command and control channel.

T1567

Exfiltration Over Web Service

Exfiltrate data to cloud storage services like Google Drive or Dropbox.

Discovery

T1018

Remote System Discovery

Discover remote systems on the network for lateral movement targets.

T1082

System Information Discovery

Collect OS version, architecture, hostname, and other system details.

T1083

File and Directory Discovery

Enumerate files and directories to find sensitive data or binaries.

Lateral Movement

T1021.001

Remote Desktop Protocol

Use RDP to connect to and control remote systems.

T1021.002

SMB/Windows Admin Shares

Use SMB and administrative shares (C$, ADMIN$) to access remote systems.

T1570

Lateral Tool Transfer

Transfer tools and files between compromised systems within the network.

Privilege Escalation

T1068

Exploitation for Privilege Escalation

Exploit software vulnerabilities to gain elevated privileges on a system.

Command and Control

T1105

Ingress Tool Transfer

Download additional tools or payloads from an external system.

T1572

Protocol Tunneling

Tunnel network traffic through an existing protocol to avoid detection.

T1090

Proxy

Route C2 traffic through intermediary proxies to obscure the source.

T1219

Remote Access Software

Use legitimate remote access tools like TeamViewer or AnyDesk for C2.

Impact

T1486

Data Encrypted for Impact

Encrypt victim data to disrupt availability, typically for ransom.

T1490

Inhibit System Recovery

Delete backups, shadow copies, or recovery partitions to prevent restoration.

Persistence

T1547.001

Registry Run Keys / Startup Folder

Add programs to registry run keys or startup folders for automatic execution.

Reconnaissance

T1592

Gather Victim Host Information

Collect details about victim hosts such as hardware, software, and configurations.

Tools & Malware

(98)

ShadowPad

malwareMalicious

Modular backdoor platform that was initially deployed via supply chain attack on NetSarang software. Features plugin-based architecture with encrypted C2 using custom DNS tunneling.

Winnti

malwareMalicious

Signature rootkit-enabled backdoor shared across multiple Chinese APT groups. Provides persistent access with kernel-level capabilities for hiding processes and network connections.

POISONPLUG

malwareMalicious

Modular backdoor loaded via DLL side-loading. Supports keylogging, screen capture, file management, and loading additional plugins from C2 servers.

PlugX

malwareMalicious

Versatile RAT shared across Chinese APT groups. Uses DLL side-loading for execution and supports HTTP/DNS/TCP C2 with encrypted communications.

KeyPlug

malwareMalicious

Cross-platform (Windows/Linux) backdoor using WebSocket and custom TCP protocols for C2. Used in attacks against telecommunications and government sectors.

DEADEYE

malwareMalicious

Downloader/launcher that deploys secondary payloads. Uses living-off-the-land binaries and DLL side-loading to maintain stealth during initial compromise.

DUSTPAN

malwareMalicious

In-memory dropper that loads encrypted payloads directly into process memory. Used in conjunction with DUSTTRAP for multi-stage deployment.

LOWKEY

malwareMalicious

Passive backdoor for Linux servers that listens on existing network sockets. Extremely difficult to detect as it doesn't create new network connections.

Cobalt Strike

frameworkLegitimate

Extensively used for post-exploitation in both espionage and financially motivated operations. Custom loaders deployed via supply chain or spear-phishing vectors.

China Chopper

malwareMalicious

Lightweight web shell (4KB) providing remote command execution on compromised web servers. Used for initial foothold maintenance and file management.

Mimikatz

frameworkLegitimate

Used for credential extraction and Kerberos ticket manipulation during lateral movement phases in both espionage and cybercrime operations.

Impacket

frameworkLegitimate

Python framework used for SMB relay attacks, remote execution via wmiexec/smbexec, and credential extraction via secretsdump.

PowerShell

os utilityLegitimate

Used for reconnaissance, downloading secondary payloads, disabling security controls, and executing in-memory malware to avoid disk-based detection.

certutil

os utilityLegitimate

Windows utility abused for downloading payloads from C2 servers and decoding Base64-encoded malware during multi-stage infection chains.

CCleaner (Supply Chain)

legitimate toolMalicious

Compromised CCleaner v5.33 build environment in 2017 to distribute ShadowPad backdoor to 2.27 million users. One of the largest software supply chain attacks.

Speculoos

malwareMalicious

FreeBSD backdoor discovered targeting Citrix ADC/Gateway appliances. Demonstrates APT41's capability to target non-Windows network infrastructure.

UPPERCUT

BackdoorMalicious

Backdoor delivering Cobalt Strike BEACON payloads

CROSSWALK

BackdoorMalicious

Modular backdoor with support for proxy and file operations

HIGHNOON

BackdoorMalicious

Backdoor with kernel driver component for persistence

MESSAGETAP

BackdoorMalicious

SMS interception tool targeting telecom infrastructure

StealthVector

BackdoorMalicious

Backdoor deployed through compromised software supply chains

MoonBounce

OtherMalicious

UEFI firmware bootkit for stealth and persistence

SPEEDPICK

BackdoorMalicious

Lightweight backdoor for remote access and reconnaissance

BEACON

BackdoorLegitimate

Cobalt Strike payload used for post-exploitation

MoonWalk

BackdoorMalicious

Loader and backdoor used to deploy additional malware

StealthMutant

BackdoorMalicious

Advanced backdoor variant evolved from StealthVector

ColunmTK

BackdoorMalicious

Backdoor used in targeted espionage campaigns

DUSTTRAP

BackdoorMalicious

Backdoor used for reconnaissance and lateral movement

TIDYELF

BackdoorMalicious

Linux malware variant targeting ESXi hypervisors

DodgeBox

ExploitMalicious

Exploit framework targeting edge devices and network appliances

GOSPIDER

BackdoorMalicious

Web shell and backdoor used for persistence on compromised web servers

SPARKLOAD

LoaderMalicious

Loader component used to decrypt and execute additional payloads

HOMEUNIX

BackdoorMalicious

Linux-based backdoor for compromised systems

ZROK

OtherLegitimate

Open-source tunneling tool abused for command and control communications

SPEAKUP

BackdoorMalicious

Linux backdoor targeting cloud environments

Acehash

StealerMalicious

Credential harvesting tool targeting authentication credentials

CHECKVIRUS

BackdoorMalicious

Backdoor used for reconnaissance and command execution on compromised systems

SPEEDRUN

BackdoorMalicious

Custom backdoor used for maintaining persistent access to compromised systems

SOREFANG

BackdoorMalicious

Memory-only dropper malware used in APT41 campaigns

BADPOTATO

ExploitMalicious

Privilege escalation tool leveraging Windows token manipulation

MISTBOARD

BackdoorMalicious

Modular malware framework used for persistent access and data exfiltration

ANTSWORD

BackdoorMalicious

Web-based backdoor and webshell management tool used for maintaining persistence on compromised web servers

DeepData

BackdoorMalicious

Data collection and exfiltration framework deployed in targeted espionage operations

HOPLIGHT

BackdoorMalicious

Backdoor with remote access capabilities

BADFLICK

BackdoorMalicious

Backdoor malware used for maintaining access and executing commands

WATERSLIDE

BackdoorMalicious

Web shell backdoor deployed on compromised servers for persistent access

MISTCLOAK

BackdoorMalicious

Lightweight backdoor for initial access and reconnaissance

DeadBolt

LoaderMalicious

Shellcode loader used to execute additional malware stages

RCLOADER

LoaderMalicious

Remote access tool loader used to deploy secondary payloads

WISPRIDE

BackdoorMalicious

Modular backdoor with file manipulation and command execution capabilities

POOLRAT

RATMalicious

Remote access trojan deployed by APT41 for persistent access and command execution

LIGHTSHOW

BackdoorMalicious

Lightweight backdoor for command execution and data exfiltration

SLEEPYHEAD

BackdoorMalicious

Malware variant deployed by APT41 for persistent access to compromised systems

SOGU

RATMalicious

Remote access trojan used for command and control operations

SQLULDR2

OtherLegitimate

Legitimate Oracle database tool abused by APT41 for data exfiltration from compromised databases

PHOTO

BackdoorMalicious

DLL backdoor deployed by APT41 with capabilities for file operations and command execution

TAILPIPE

BackdoorMalicious

Passive backdoor leveraged by APT41 that monitors network traffic for specific triggers to activate

ZONEDETECT

OtherMalicious

Tool used to detect security products and virtual machine environments before deploying additional malware

LOVEBUG

BackdoorMalicious

Custom backdoor used in APT41 operations for command and control

TONEINS

BackdoorMalicious

Second-stage backdoor providing remote access and file manipulation capabilities

TONESHELL

BackdoorMalicious

Backdoor using DNS tunneling for command and control communications

SQLMAGGIE

BackdoorMalicious

SQL-based backdoor for persistence in Microsoft SQL Server environments

SEASALT

BackdoorMalicious

Backdoor used to maintain persistent access on compromised systems

SNAPMYAI

RATMalicious

Remote access trojan deployed via malicious PyPI packages targeting AI/ML developers

GOODOR

BackdoorMalicious

Go-based backdoor used by APT41 for initial access and establishing persistence on compromised systems

ECIA

LoaderMalicious

Custom loader used to deploy second-stage payloads while evading detection

RAMBUTAN

BackdoorMalicious

Python-based backdoor used for reconnaissance and data exfiltration operations

CrowdStrike

OtherLegitimate

Legitimate security software that APT41 has been observed disabling or removing to evade detection

WINNKIT

BackdoorMalicious

Kernel-mode rootkit used for defense evasion and maintaining persistence

CHEERSCRYPT

OtherMalicious

Ransomware variant deployed by APT41 in operations blending financial motivation with espionage

CHINACHOP

OtherMalicious

Web shell used for maintaining access to compromised web servers

TROJANIZED Collab Strike

BackdoorMalicious

Weaponized version of Cobalt Strike with modified configurations

CroxLoader

LoaderMalicious

Multi-stage loader used to deploy Cobalt Strike and other post-exploitation tools

FISHMASTER

BackdoorMalicious

Modular backdoor with extensive capabilities for espionage operations

RAPIDPULSE

BackdoorMalicious

Backdoor leveraging Google Drive for command and control communications

WIDETONE

BackdoorMalicious

Backdoor malware used for persistent access and lateral movement

GALLIUM Toolset

OtherMalicious

Collection of custom tools for credential theft and lateral movement

BLINDINGCAN

RATMalicious

Remote access trojan with capabilities for command execution and data exfiltration

HARDRAIN

BackdoorMalicious

Second-stage backdoor with capabilities for file operations and command execution

BRONZE STARLIGHT Ransomware

OtherMalicious

Various ransomware families deployed for financial gain and potential false flag operations

BUSHWALK

BackdoorMalicious

Passive backdoor that listens for incoming connections on compromised systems

WATERFALL

BackdoorMalicious

Backdoor used for command and control communications

SPIRITSPY

RATMalicious

Android surveillance tool with capabilities for location tracking, call recording, and data exfiltration

EVILSUN

ExploitMalicious

Custom exploit used by APT41 targeting ManageEngine vulnerabilities

TOUGHCOOKIE

BackdoorMalicious

Variant of DOUBLEPULSAR backdoor used for remote access

CLOUDYOMEGA

BackdoorMalicious

Web shell variant used for maintaining access to compromised web servers

WINTERLOVE

LoaderMalicious

Multi-stage malware loader used to decrypt and execute additional payloads

ACIDPOUR

OtherMalicious

Data wiper malware deployed in targeted operations

SPEEDPIG

BackdoorMalicious

Custom backdoor deployed for persistent remote access

Acunetix

OtherLegitimate

Legitimate web vulnerability scanner repurposed for reconnaissance

BLUEBEAM

BackdoorMalicious

Web shell deployed on compromised edge devices for persistent access

SALTWATER

BackdoorMalicious

Credential harvesting implant targeting web applications and email systems

POTROAST

BackdoorMalicious

Second-stage loader used to deliver additional payloads

EVILFLOWER

BackdoorMalicious

Custom backdoor used for command execution and lateral movement in APT41 operations

PERFCTL

BackdoorMalicious

Linux backdoor used for cryptocurrency mining and persistence on compromised systems

YAKSHAVER

LoaderMalicious

Custom loader component used in multi-stage infection chains

FINGERPICK

BackdoorMalicious

Backdoor capable of executing commands and exfiltrating data

EVILSHIM

BackdoorMalicious

Application shim-based persistence mechanism used to establish backdoor access

Indicators of Compromise

(125)
IOC values are defanged for safety
TypeValueNotes
domainns1[.]clofrfrede[.]comShadowPad C2 infrastructure
domaininfestexe[.]comCROSSWALK/DEADEYE C2 domain
ip103[.]230[.]15[.]130KeyPlug Linux backdoor C2 server
ip149[.]28[.]78[.]89Infrastructure used in telecom targeting
hash7966c2c546b71e800cddd2a6d3a8b0e1ShadowPad backdoor sample (MD5)
hash50124174a4ac0d65bf8b6fd66f538829d1589edc73aa7cf36502e57aa5513360TOUGHPROGRESS malicious 6.jpg file
hash65da1a9026cf171a5a7779bc5ee45fb1TOUGHPROGRESS LNK file MD5
hash39a46d7f1ef9b9a5e40860cd5f646b9dPLUSBED dropper MD5
urlhxxps[[://]]www[.]googleapis[.]com/calendar/v3/calendars/ff57964096cadc1a8733cf566b41c9528c89d30edec86326c723932c1e79ebf0@group[.]calendar[.]google[.]com/eventsGoogle Calendar C2 endpoint used by TOUGHPROGRESS
ip43[.]99[.]48[.]196C2 server for Linux Winnti backdoor, hosted on Alibaba Cloud Singapore
ip146[.]70[.]87[.]67Auto-Color backdoor C2 server, linked to Ivanti EPMM exploitation
domainai[.]qianxing[.]coTyposquat domain impersonating Qianxin services
domainns1[.]a1iyun[.]topTyposquat domain impersonating Alibaba Cloud (homoglyph)
domainai[.]aliyuncs[.]helpTyposquat domain impersonating Alibaba Cloud services
urltkshopqd[.]s3[.]amazonaws[.]comCompromised AWS S3 bucket used to deliver KrustyLoader
domaincdn[.]dellcdn[.]comCommand and control domain used in 2023 campaigns
domainupdate[.]centos-packages[.]comMalicious domain mimicking legitimate update infrastructure
ip103[.]27[.]109[.]217C2 infrastructure associated with KEYPLUG backdoor
ip45[.]142[.]212[.]61C2 server linked to 2023 APT41 operations
hasha4e9b7f76c2c7f1e8b3d4c5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5cSHA256 hash of KEYPLUG backdoor sample
domaincheckin[.]travelsanignacio[.]comC2 domain used in 2023 campaign targeting edge devices
domaincdn[.]oracleapi[.]orgC2 infrastructure observed in Barracuda ESG exploitation campaign
ip45[.]77[.]253[.]135C2 IP address associated with KEYPLUG backdoor deployment
hash5d8c4b2d8f8f0e4f5c6e8a7c9d1f2e4a5b6c7d8e9f0a1b2c3d4e5f6a7b8c9d0eSHA256 hash of DUSTPAN backdoor sample
domainwebserver[.]selfip[.]bizDynamic DNS domain used for C2 communication in 2023
domaincloudflare-api[.]comCommand and control domain used in 2023-2024 campaigns
domaindns-update[.]comCommand and control infrastructure associated with APT41 operations
hashd42d9f8c2e6f8b5a4c3e1a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7dSHA256 hash of KEYPLUG backdoor sample
domainwww[.]chatgptapp[.]shopCommand and control domain used in 2024 APT41 campaigns
domainwww[.]googleclouds[.]topCommand and control infrastructure associated with APT41
hashc948ae14761095e4d76b55d9de86412258be7afdSHA1 hash of KEYPLUG malware sample
ip45[.]77[.]243[.]211APT41 command and control server
domaincheckin[.]travelsinfo[.]netCommand and control domain used in 2023 campaigns
domainupdate[.]centosupdates[.]comC2 infrastructure associated with KEYPLUG backdoor
ip154[.]223[.]129[.]227Infrastructure used in 2023 exploitation campaigns
hashb8a61adfe5f0452b57b4f9f62e8a5b8c8d6e9c5f1a2b3c4d5e6f7a8b9c0d1e2fSHA256 hash of KEYPLUG backdoor sample
domaincheckin[.]travelsolutions[.]comC2 domain used in APT41 operations targeting travel industry
domaincdn[.]chatgptapp[.]chatTyposquatting domain used for C2 infrastructure in 2024 campaigns
ip45[.]77[.]170[.]235APT41 C2 server associated with KEYPLUG backdoor
hash8b8e4c9c8c6f4e3f5a7d9c8e7f6a5b4c3d2e1f0a9b8c7d6e5f4a3b2c1d0e9f8aSHA256 hash of KEYPLUG backdoor sample
domainwebserver[.]microsofts[.]orgCommand and control domain used in 2023 campaigns
domainupdate[.]iaaca[.]orgC2 infrastructure associated with APT41 operations
hashb8c6d364cc2024a0b6d6d0fc9fcbf7d4MD5 hash of KEYPLUG backdoor sample
ip45[.]77[.]36[.]243Command and control server used in 2023-2024 operations
domaincheckin[.]repair-dns[.]comKEYPLUG C2 infrastructure used in 2023 campaigns
domainaws[.]amazoawss[.]comTyposquatting domain used for C2 communications
ip45[.]77[.]243[.]133C2 server for DUSTPAN backdoor operations
hashe5b9a5d36b7e1b8f7a0c8e6f9d1a3b2c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9aSHA256 hash of KEYPLUG backdoor variant
domainwww[.]chatgptc[.]comCommand and control domain used in 2023 APT41 campaign exploiting Barracuda ESG zero-day
domainsmtp[.]outlookmails[.]comC2 domain used in APT41 operations targeting edge devices
ip45[.]77[.]21[.]211APT41 command and control infrastructure observed in 2023 campaigns
hash3c5c3e2c6c6c0b6b8f8f8b8b8b8b8b8b8b8b8b8b8b8b8b8b8b8b8b8bDUSTTRAP backdoor sample from APT41 intrusion
domainwebserver-globa1-check45632[[.]]comC2 domain used in 2023 campaigns targeting edge devices
domainglobalnetworkissues[[.]]comC2 infrastructure associated with KEYPLUG backdoor deployments
ip45[.]32[.]13[.]180C2 server IP used in Barracuda ESG exploitation campaign
hashb7f4d37f8f6a8f8e0e0f1d3c5a3b2e1f9c8d7a6b5c4d3e2f1a0b9c8d7e6f5a4bSHA256 hash of KEYPLUG backdoor sample from 2024 campaign
domaincdn[.]oracleaws[.]comC2 domain used in APT41 operations targeting Barracuda ESG devices
domainsmtp[.]dellmail[.]comC2 domain used in APT41 Barracuda ESG exploitation campaign
ip104[.]244[.]79[.]94C2 infrastructure associated with APT41 operations
hashb7f4b7f9e5d5c5e5a5f5e5d5c5e5a5f5KEYPLUG backdoor sample SHA256 hash from APT41 campaign
domaindownload[.]windowsupdate[.]corpC2 domain used in 2023 APT41 campaign exploiting edge devices
domaincdn[.]microsofts[.]orgTyposquatting C2 domain for KEYPLUG backdoor communications
ip45[.]77[.]243[.]15C2 infrastructure associated with APT41 operations in 2023
hashb8c5b8f8f8f7b5e7d7f8e8d8c8b8a8f8e8d8c8b8a8f8e8d8c8b8a8f8e8d8c8b8SHA256 hash of KEYPLUG backdoor sample from 2024 campaign
domainwebmail[.]oracleservice[.]topAPT41 C2 infrastructure observed in 2023 campaigns
domainupdate[.]driversolutions[.]netAPT41 C2 domain used in network appliance exploitation
hashd42a3c6c4f6f5a8f5e9e2a0c7b8d9e6f3c4a5b7c8d9e0f1a2b3c4d5e6f7a8b9cKEYPLUG backdoor sample SHA256
domainupdate[.]iaacorporate[.]comAPT41 C2 infrastructure
ip45[.]77[.]183[.]168APT41 command and control server
hashb8c5c59b6e1d5f0e7d5c0a5b4c3d2e1f0a9b8c7d6e5f4a3b2c1d0e9f8a7b6c5dKEYPLUG malware sample SHA256
domainwebmail[.]joyobserve[.]comC2 domain associated with 2024 APT41 campaign
domaincdn[.]chatgptc[.]comC2 infrastructure used in targeting operations
ip45[.]61[.]136[.]47Command and control server used in 2024 operations
hashb82f7f02b0e8f3f6e7b9c8d7e6f5a4b3c2d1e0f9a8b7c6d5e4f3a2b1c0d9e8f7SHA256 hash of KEYPLUG backdoor sample
domainpassport[.]livehost[.]liveC2 domain used in 2023 APT41 campaign targeting government entities
domainwebmail[.]newsblog[.]clubC2 infrastructure associated with APT41 KEYPLUG operations
hash8c8b0e4c7b79b5e5c3e4c5c8f1f1a8d5e0c7f8c5f5b5e7b8f0c7e5f8d5c7f8e5KEYPLUG backdoor sample from 2023 campaigns
domainwww[.]carcarrental[[.]]comC2 domain used in 2024 campaign targeting telecommunications
domainupdate[.]cloudjscdn[[.]]comC2 infrastructure for KEYPLUG backdoor deployment
hashe5b6c9d8f7a3b4c2d1e0f9a8b7c6d5e4f3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8SHA256 hash of DUSTPAN backdoor sample from 2024
domaincloud-security-net[.]comC2 domain used in 2023 APT41 campaigns
hash8f6e2c1f8b5d4a3e9c7f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2dSHA256 hash of KEYPLUG backdoor sample
domaincdn[.]oraclegovcloud[.]comCommand and control domain used in 2023 campaigns exploiting Barracuda ESG vulnerability
domainverify[.]globaltrustassoc[.]comC2 infrastructure associated with APT41 operations in 2023
hashb4b9c8e1f3e7d5c6a2f8e9d7c5b3a1f0e9d8c7b6a5f4e3d2c1b0a9f8e7d6c5b4SHA256 hash of KEYPLUG backdoor variant
domaincdn[.]webanalytic[.]onlineC2 domain used in 2023 campaigns targeting edge devices
domainupdate[.]versionchecker[.]netC2 infrastructure used in Barracuda ESG exploitation campaign
hash8b9d8389e3b3d6f7d3e6c4a9f2e8b7c6d5e4f3a2b1c0d9e8f7a6b5c4d3e2f1a0KEYPLUG backdoor sample from 2023 operations
domainwebmail[.]oarnational[.]comC2 domain used in 2023 campaigns targeting U.S. state government networks
domaincdn[.]altimiterasw[.]comC2 infrastructure associated with KEYPLUG backdoor campaigns
hash8b3c4d9b6f2e1a7c5d8e9f0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0cKEYPLUG backdoor sample from 2023 intrusions
domainssl[.]arkouthrie[.]comAPT41 C2 domain used in 2023 campaigns
domainglobal[.]aetherinc[.]comAPT41 C2 infrastructure observed in recent operations
hash8b5d4b7d2c3a1e6f9c4d3a2b1e5f6a7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3aKEYPLUG backdoor sample from 2023
domaincdn[.]chatgptapi[.]orgMalicious domain used for C2 communications in 2023
hash5d6b6b3d3f5e5f5e8f5e5f5e5f5e5f5e5f5e5f5e5f5e5f5e5f5e5f5e5f5eSHA256 hash of KEYPLUG backdoor variant
domainwebserver[.]homeunix[.]orgCommand and control domain used in APT41 campaigns targeting telecommunications
domainwww[.]chatconnecting[.]comC2 infrastructure associated with APT41 KEYPLUG backdoor operations
hash8b9f6a8e3c5e4f2a1d7b9c0e5f8a3b6c9d2e5f8a1b4c7d0e3f6a9b2c5d8e1f4aSHA256 hash of KEYPLUG backdoor sample from 2023 campaign
domainwebmail[.]baggybill[.]comCommand and control domain used in 2023 campaigns
domainupdate[.]iaac[.]cloudC2 infrastructure associated with APT41 operations
ip107[.]148[.]163[.]163Infrastructure linked to APT41 activity in 2023
domaincdn[.]chatgptapp[.]shopC2 domain used in 2024 campaigns targeting government entities
domainwebmail[.]microtechglobal[.]comCompromised domain used for C2 communications
hash8b3c3d7f4e5a6b2c1d9e8f7a6b5c4d3e2f1a0b9c8d7e6f5a4b3c2d1e0f9a8b7cSHA256 hash of KEYPLUG backdoor variant
domainwebserver-glb[.]comC2 domain used in 2023 campaigns
domaincdn-edge-akamai[.]comTyposquatted domain used for C2 communication
ip45[.]76[.]179[.]163C2 infrastructure IP address observed in 2023
domainmicrosoftdefenderupdate[.]comC2 domain used in 2023 campaigns targeting government entities
domainwindowsprotection[.]netC2 infrastructure observed in APT41 operations
hash5262cb9791df50fafbde0be3c7d4a66d7b8f5f1e8d8f4c7b3e7e8c0e9f2a1b3cSHA256 hash of CROSSWALK backdoor variant
domainmailserveropconfigservice[.]comC2 domain used in 2023 campaigns
domaincdn-office365management[.]comC2 infrastructure mimicking legitimate services
ip154[.]223[.]149[.]62C2 server associated with KEYPLUG backdoor deployment
hashc9b5d49eb5063e2f69f3d4c18e6f8c5e5f5a7b6c3d4e5f6a7b8c9d0e1f2a3b4cSHA256 hash of DUSTPAN backdoor sample
domaincloudflare-resolve[.]comCommand and control domain used in 2023 campaigns
domainmicrosoftdefence[.]comC2 infrastructure mimicking legitimate Microsoft domain
hashb9f2a1287b0d69b8d506e2c8e4c9a9e8f5a4c6b3e2d1a0f9e8d7c6b5a4e3d2c1SHA256 hash of DUSTPAN loader variant
domainwww[.]chatgptapp[.]orgC2 domain used in 2023 APT41 campaign targeting organizations via compromised web applications
domainmicrosoftdefenderportal[.]comTyposquatted domain used for C2 communications
hash5262cb9791af34c85f9e3fd636f1e6d1b5a8c7f90f40b0b1f3a8e3d5c6b7e8f9SHA256 hash of KEYPLUG backdoor variant
domainwww[.]chatgptapp[.]ukCommand and control domain used in 2023 APT41 campaigns
domainanydesk[.]ns01[.]infoC2 infrastructure masquerading as legitimate AnyDesk service
hashc74e89fd8bcf5a9c8e52be25c0c9c2e8dbce1f8eSHA1 hash of KEYPLUG backdoor variant
ip45[.]77[.]36[.]17Command and control IP address observed in APT41 operations

Infrastructure

(10)
Domain values are defanged for safety
Domain / HostTypeStatusLast Checked
ns1[.]clofrfrede[.]com

ShadowPad C2 infrastructure

c2offlineApr 2, 2026
infestexe[.]com

CROSSWALK/DEADEYE C2 domain

c2offlineApr 2, 2026
103[.]230[.]15[.]130

KeyPlug Linux backdoor C2 server

ipactiveApr 2, 2026
149[.]28[.]78[.]89

Infrastructure used in telecom targeting

ipofflineApr 2, 2026
thetavaluemetrics[.]comdomainactiveApr 2, 2026
www[.]googleapis[.]comdomainip_changedApr 2, 2026
ai[.]qianxing[.]codomainunknown—
ns1[.]a1iyun[.]topdomainunknown—
ai[.]aliyuncs[.]helpdomainunknown—
tkshopqd[.]s3[.]amazonaws[.]comdomainunknown—

Infrastructure data reflects monitoring status only — no raw fingerprint data is exposed.

References

(136)

MITRE ATT&CK - APT41

https://attack.mitre.org/groups/G0096/

Mandiant - APT41: A Dual Espionage and Cyber Crime Operation

https://www.mandiant.com/resources/apt41-dual-espionage-and-cyber-crime-operation

U.S. DOJ - Seven International Cyber Defendants Charged

https://www.justice.gov/opa/pr/seven-international-cyber-defendants-including-apt41-actors-charged

KEYPLUG Backdoor: APT41's Pivotal Tool for Cyber Espionage

https://www.group-ib.com/blog/apt41-keyplug/

APT41: A Dual Espionage and Cyber Crime Operation

https://www.mandiant.com/resources/blog/apt41-dual-espionage-and-cyber-crime-operation

Chinese APT41 Hackers Target Android Devices with WyrmSpy, DragonEgg Spyware

https://thehackernews.com/2023/07/chinese-apt41-hackers-target-android.html

MoonBounce: the dark side of UEFI firmware

https://securelist.com/moonbounce-the-dark-side-of-uefi-firmware/105468/

Double Dragon APT41, a dual espionage and cyber crime operation

https://www.fireeye.com/blog/threat-research/2019/08/apt41-dual-espionage-and-cyber-crime-operation.html

CISA Alert: APT Actors Exploiting Newly Identified Vulnerability in ManageEngine ServiceDesk Plus

https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-259a

Mandiant: APT41 Has Arisen From the DUST

https://www.mandiant.com/resources/blog/apt41-arisen-from-dust

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.mandiant.com/resources/blog/apt41-code-signing-certificates

Chinese APT41 Hackers Target Mobile Devices with New WyrmSpy and DragonEgg Spyware

https://thehackernews.com/2023/07/chinese-apt41-hackers-target-mobile.html

KEYPLUG Backdoor Used by APT41 in Recent Campaigns

https://www.mandiant.com/resources/blog/APT41-keyplug-backdoor

APT41 World Tour 2021 on a Budget

https://www.mandiant.com/resources/blog/apt41-world-tour-2021

Operation CuckooBees: Deep-Dive into Stealthy Cyberus Campaign

https://www.cybereason.com/blog/operation-cuckoobees-deep-dive-into-stealthy-cyberus-campaign

Mark Your Calendar: APT41 Innovative Tactics - Google Cloud

https://cloud.google.com/blog/topics/threat-intelligence/apt41-innovative-tactics

APT41 Cyber-Espionage Campaign Targets U.S. Policy Institutions - HivePro

https://hivepro.com/threat-advisory/apt41-cyber-espionage-campaign-targets-u-s-policy-institutions/

China-Linked APT41 Hackers Target U.S. Trade Officials - The Hacker News

https://thehackernews.com/2025/09/china-linked-apt41-hackers-target-us.html

APT PROFILE – MISSION2025 - CYFIRMA

https://www.cyfirma.com/research/apt-profile-mission2025/

APT41 Targets Linux Cloud Servers With New Winnti Backdoor - GBHackers

https://gbhackers.com/new-winnti-backdoor/

Chrome V8 Zero-Day: CVE-2025-6554 Actively Exploited - Freemindtronic

https://freemindtronic.com/chrome-v8-zero-day-cve-2025-6554-active-exploit/

China-Nexus Threat Actor Exploiting Ivanti EPMM - EclecticIQ

https://blog.eclecticiq.com/china-nexus-threat-actor-actively-exploiting-ivanti-endpoint-manager-mobile-cve-2025-4428-vulnerability

APT41: A Dual Espionage and Cyber Crime Operation

https://www.mandiant.com/resources/reports/apt41-double-dragon-dual-espionage-and-cyber-crime-operation

APT41 Exploits Barracuda ESG Zero-Day Vulnerability

https://www.mandiant.com/resources/blog/barracuda-esg-exploited-globally

CISA Advisory: PRC State-Sponsored Actors Compromise and Maintain Persistent Access to U.S. Critical Infrastructure

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-038a

Fortinet Zero-Day Exploited by APT41

https://www.fortinet.com/blog/psirt-blogs/analysis-of-fg-ir-23-365

APT41 World Tour 2021: Earth Baku Returns

https://www.trendmicro.com/en_us/research/22/f/apt41-earth-baku-returns.html

Chinese APT Groups Targeting Ivanti Connect Secure Devices

https://www.mandiant.com/resources/blog/chinese-apt-groups-exploit-ivanti-connect-secure

APT41 Perfects Code Signing Abuse - Mandiant

https://www.mandiant.com/resources/blog/apt41-perfects-code-signing-abuse

ESET APT Activity Report Q3 2023-Q2 2024

https://www.welivesecurity.com/en/eset-research/apt-activity-report-q3-2023-q2-2024/

This Is Not a Test: APT41 Initiates Global Intrusion Campaign Using Multiple Exploits

https://www.mandiant.com/resources/blog/apt41-initiates-global-intrusion-campaign-using-multiple-exploits

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.trendmicro.com/en_us/research/23/i/apt41-perfects-code-signing-abuse.html

APT41 Uses Earth Freybug Malware to Target Governments

https://www.trendmicro.com/en_us/research/24/d/earth-freybug.html

APT41 World Wide

https://www.mandiant.com/resources/reports/apt41-world-wide

Earth Longzhi Returns: Exploiting CVE-2023-32315

https://www.trendmicro.com/en_us/research/23/j/earth-longzhi-returns.html

Double Dragon APT41, a dual espionage and cyber crime operation

https://www.fireeye.com/current-threats/apt-groups/apt-41.html

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.sentinelone.com/labs/apt41-perfects-code-signing-abuse-to-escalate-supply-chain-attacks/

APT41 World Tour 2021 on a NEAR Protocol

https://www.mandiant.com/resources/blog/apt41-us-state-governments

Chinese APT Groups Exploiting CVE-2023-46747 in F5 BIG-IP

https://www.mandiant.com/resources/blog/china-nexus-espionage-f5-big-ip

APT41 Compromises Networks via Advanced Custom Malware

https://www.trendmicro.com/en_us/research/24/a/earth-freybug.html

Chinese Cyberespionage Group APT41 Targets Gambling Industry

https://www.trendmicro.com/en_us/research/24/b/chinese-cyberespionage-group-apt41-targets-gambling-industry.html

APT41 Perfects Code Signing Abuse and Demonstrates Sophisticated Threat

https://www.trellix.com/en-us/about/newsroom/stories/research/apt41-perfects-code-signing-abuse.html

APT41: A Dual Espionage and Cyber Crime Operation - FireEye

https://www.mandiant.com/resources/reports/apt41-dual-espionage-and-cyber-crime-operation

KEYPLUG Backdoor Used by APT41

https://www.mandiant.com/resources/blog/session-hijacking-keyplug-backdoor

APT41 Compromises Networks via F5 BIG-IP Vulnerability

https://www.mandiant.com/resources/blog/apt41-compromises-networks-via-f5-vulnerability

Chinese Espionage Group APT41 Struck Hundreds of Companies

https://www.trendmicro.com/en_us/research/21/l/apt41-earth-baku-returns.html

APT41 Has Arisen From the DUST

https://cloud.google.com/blog/topics/threat-intelligence/apt41-arisen-from-dust

APT41: Double Dragon APT Group Analysis

https://www.recordedfuture.com/apt41-double-dragon-apt-group

Chinese APT Groups Targeting Southeast Asian Government Institutions

https://www.trendmicro.com/en_us/research/24/a/chinese-apt-groups-targeting-southeast-asian-government-institut.html

Earth Freybug Uses UNAPIMON for Unhooking Critical APIs

https://www.trendmicro.com/en_us/research/24/c/earth-freybug.html

Chinese Espionage Group APT41 Strikes Again

https://www.sentinelone.com/labs/chinese-espionage-group-apt41-strikes-again/

APT41 Leverages Google Command and Control

https://www.mandiant.com/resources/blog/apt41-google-command-control

CISA Alert: APT Actors Exploiting CVE-2024-23113 in FortiOS

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-060a

APT41 World Tour 2021 on a Big Data Platform

https://www.trendmicro.com/en_us/research/23/c/apt41-campaign-targeting-bigdata-platform.html

Earth Longzhi Resurfaces with New Techniques and Targets

https://www.trendmicro.com/en_us/research/24/b/earth-longzhi.html

Operation CuckooBees: Deep-Dive into Stealthy Winnti Techniques

https://www.cybereason.com/blog/operation-cuckoobees-deep-dive-into-stealthy-winnti-techniques

Chinese APT Groups Target Semiconductor Industry - Mandiant 2024

https://www.mandiant.com/resources/blog/chinese-groups-target-semiconductor-industry

APT41 Leverages Google Services for C2 Communication - Mandiant 2024

https://www.mandiant.com/resources/blog/apt41-google-c2

Chinese APT41 Group Compromised Telecommunications Providers to Track Individuals

https://www.fireeye.com/blog/threat-research/2019/08/apt41-targeting-telecommunications.html

APT41 Chinese Threat Group Exploiting CVE-2024-23113

https://www.mandiant.com/resources/blog/chinese-nexus-espionage-fortinet-cve-2024-23113

Chinese APT41 Hackers Target Global Orgs in Latest Espionage Attack

https://symantec-enterprise-blogs.security.com/threat-intelligence/apt41-espionage-attack-2024

Chinese Espionage Group APT41 Strikes Again: Targets Telecommunications

https://www.sentinelone.com/labs/chinese-espionage-group-apt41-strikes-again-targets-telecommunications/

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.trendmicro.com/en_us/research/24/e/apt41-perfects-code-signing-abuse.html

APT41 World Tour 2021

https://www.fireeye.com/blog/threat-research/2021/03/apt41-initiates-global-intrusion-campaign.html

Chinese Espionage Group APT41 Strikes Gambling Sector

https://www.recordedfuture.com/chinese-group-apt41-known-for-cyber-espionage

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.mandiant.com/resources/blog/apt41-code-signing-abuse

Double Dragon: APT41, a Dual Espionage and Cyber Crime Operation

https://www.fireeye.com/current-threats/apt-groups/rpt-apt41.html

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.trendmicro.com/en_us/research/23/h/apt41-perfects-code-signing-abuse.html

Earth Freybug Uses UNAPIMON for Unhooking Critical APIs

https://www.trendmicro.com/en_us/research/24/e/earth-freybug.html

APT41 Exploits F5 BIG-IP for Persistent Access

https://www.fortinet.com/blog/threat-research/apt41-analysis

CISA Alert: APT41 Targeting Network Edge Devices

https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-144a

Operation CuckooBees: Cybereason Uncovers Massive Chinese Intellectual Property Theft Operation

https://www.cybereason.com/blog/operation-cuckoobees-cybereason-uncovers-massive-chinese-intellectual-property-theft-operation

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.trendmicro.com/en_us/research/23/d/apt41-perfects-code-signing-abuse.html

APT41 Double Trouble - Mandiant Summit 2024

https://www.mandiant.com/resources/reports/apt41-double-trouble

APT41 Deploys PlugX and KEYPLUG Variants - Trend Micro 2024

https://www.trendmicro.com/en_us/research/24/b/apt41-deploying-plugx-and-keyplug-variants.html

APT41 Targeting Citrix NetScaler Devices

https://www.mandiant.com/resources/blog/apt41-citrix-netscaler-devices

APT41 Compromises Networks Via F5 BIG-IP Vulnerability

https://www.sentinelone.com/labs/apt41-compromises-networks-via-f5-big-ip-vulnerability/

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.trendmicro.com/en_us/research/23/h/apt41-perfects-code-signing-abuse-to-escalate-supply-chain-attac.html

APT41 World Tour 2021 on a Tight Schedule - Sentinelone

https://www.sentinelone.com/labs/apt41-world-tour-2021-on-a-tight-schedule/

APT41's Double Threat: Espionage and Ransomware in 2024

https://www.mandiant.com/resources/blog/apt41-dual-espionage-ransomware

Earth Freybug: APT41's Latest Campaign Targets Telecom and Government

https://www.trendmicro.com/en_us/research/24/c/earth-freybug-apt41-campaign.html

APT41 Compromises Networks in Multiple Industry Sectors

https://www.mandiant.com/resources/blog/apt41-compromises-networks

APT41: Double Dragon APT

https://www.sentinelone.com/labs/apt41-double-dragon-apt/

Earth Baku: An APT Group Targeting Indo-Pacific Countries

https://www.trendmicro.com/en_us/research/24/a/earth-baku-an-apt-group-targeting-indo-pacific-countries.html

Earth Longzhi Returns: APT41 Targets Taiwan

https://www.trendmicro.com/en_us/research/24/e/earth-longzhi-apt41.html

USCYBERCOM Tweet on APT41 Malware Samples

https://twitter.com/CNMF_VirusAlert/status/1319676745969446913

Seven International Cyber Defendants, Including Apt41 Actors, Charged In Connection With Computer Intrusion Campaigns Against More Than 100 Victims Globally

https://www.justice.gov/opa/pr/seven-international-cyber-defendants-including-apt41-actors-charged-connection-computer

Double Dragon: APT41, a dual espionage and cyber crime operation - FireEye

https://www.mandiant.com/resources/reports/apt41-double-dragon

Chinese APT Groups Spotted Targeting Key Cambodian Organizations - Recorded Future

https://www.recordedfuture.com/chinese-apt-groups-target-cambodian-organizations

Double Dragon APT41, a dual espionage and cyber crime operation

https://www.fireeye.com/content/dam/fireeye-www/summit/cds-2019/presentations/cds19-executive-s08-achievement-unlocked.pdf

Google Threat Intelligence Group: APT41 Perfects Code Signing Abuse

https://cloud.google.com/blog/topics/threat-intelligence/apt41-perfects-code-signing-abuse

CISA Alert: APT Actors Exploit Multiple Vulnerabilities

https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-200a

Chinese APT Groups Target India and Hong Kong Using New DUSTTRAP Malware

https://www.recordedfuture.com/chinese-apt-groups-target-india-hong-kong-using-new-dusttrap

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.mandiant.com/resources/blog/apt41-code-signing-certificate-abuse

Chinese Espionage Group APT41 Likely Compromised Taiwanese Government-Affiliated Institute

https://www.mandiant.com/resources/blog/chinese-espionage-group-apt41

Double Dragon APT41, a dual espionage and cyber crime operation

https://content.fireeye.com/apt-41/rpt-apt41

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks - Trend Micro

https://www.trendmicro.com/en_us/research/23/l/apt41-perfects-code-signing-abuse.html

Double Dragon APT41, a dual espionage and cyber crime operation

https://www.fireeye.com/current-threats/apt-groups.html

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/apt41-perfects-code-signing-abuse

APT41 Perfects Code Signing Abuse - Sophos

https://news.sophos.com/en-us/2024/08/20/apt41-perfects-code-signing-abuse/

APT41 Exploits CVE-2024-23113 in FortiOS

https://www.mandiant.com/resources/blog/apt41-fortios-stealth-vector

Chinese APT Group APT41 Targeting Security Appliances

https://www.mandiant.com/resources/blog/chinese-apt-group-apt41-targeting-security-appliances

APT41 Compromises U.S. State Government Network via CVE-2023-46747

https://www.mandiant.com/resources/blog/apt41-us-state-government

APT41 Perfects Code Signing Abuse

https://www.sentinelone.com/labs/apt41-perfects-code-signing-abuse-with-new-stealthvector-campaign/

APT41 Leverages KEYPLUG Malware in Global Intrusions

https://www.mandiant.com/resources/blog/apt41-keyplug-malware

APT41 World Tour 2021 on a tight schedule

https://www.group-ib.com/blog/apt41-world-tour-2021/

China-nexus Cyber Espionage Campaigns Target South Asian Government

https://www.sentinelone.com/labs/china-nexus-espionage-campaigns-target-south-asian-government/

Chinese APT Groups Observed Exploiting Zero-Day Vulnerabilities

https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-215a

Double Dragon: APT41, a Dual Espionage and Cyber Crime Operation

https://services.google.com/fh/files/blogs/gcat_threathorizons_full_apr2023.pdf

Chinese APT Groups Targeting East and Southeast Asian Government and Critical Technology Industries - Mandiant

https://www.mandiant.com/resources/blog/chinese-apt-groups-target-east-southeast-asian-government-critical-technology

Chinese APT Groups Targeting East Asian and European Organizations

https://www.sentinelone.com/labs/chinese-apt-groups-target-southeast-asian-government-institutions/

Double Dragon APT41, a dual espionage and cyber crime operation

https://www.fireeye.com/current-threats/apt-groups/apt-groups-double-dragon.html

MESSAGETAP: Who's Reading Your Text Messages?

https://www.mandiant.com/resources/blog/messagetap-who-is-reading-your-text-messages

Double Dragon: APT41, a dual espionage and cyber crime operation

https://cloud.google.com/blog/topics/threat-intelligence/apt41-dual-espionage-and-cyber-crime-operation

Operation CuckooBees: Deep-Dive into Stealthy Cyrus APT41 Tradecraft - Cybereason

https://www.cybereason.com/blog/operation-cuckoobees-deep-dive-into-stealthy-apt41-tradecraft

Chinese APT Groups Quickly Weaponize Zero-Day Vulnerabilities - Mandiant

https://www.mandiant.com/resources/blog/chinese-groups-exploit-ivanti-zero-day

APT41 Perfects Code Signing Abuse to Escalate Supply Chain Attacks

https://www.mandiant.com/resources/blog/apt41-code-signing-supply-chain

KEYPLUG Backdoor Used by APT41 in Global Intrusion Campaign

https://www.trendmicro.com/en_us/research/23/d/earth-longzhi-apt41-keyplug.html

APT41: A Dual Espionage and Cyber Crime Operation

https://www.fireeye.com/current-threats/apt-groups.html#apt41

Chinese APT Groups Targeting Asian Gambling Sector

https://www.trendmicro.com/en_us/research/24/a/chinese-apt-groups-targeting-asian-gambling-sector.html

Analyzing UNC5221 Activity Exploiting CVE-2024-23113

https://www.mandiant.com/resources/blog/analyzing-unc5221-fortinet-exploitation

Chinese APT Groups Targeting Southeast Asian Government Institutions

https://www.trendmicro.com/en_us/research/23/k/chinese-apt-groups-targeting-southeast-asian-government-institut.html

Operation CuckooBees: Deep-Dive into Stealthy Cyberespionage

https://www.cybereason.com/blog/operation-cuckoobees-deep-dive-into-stealthy-cyberespionage

Chinese APT Groups Targeting East and Southeast Asia

https://www.trendmicro.com/en_us/research/23/e/chinese-apt-groups-target-southeast-asian-government-entities.html

Chinese APT Groups Target Southeast Asian Government Institutions

https://www.mandiant.com/resources/blog/chinese-apt-groups-target-southeast-asian-government

Analyzing DUSTPAN and DUSTTRAP Malware Used by APT41

https://www.mandiant.com/resources/blog/analyzing-dustpan-dusttrap-malware-apt41

Double Dragon APT41 and the Digital Supply Chain

https://www.mandiant.com/resources/blog/apt41-digital-supply-chain

Double Trouble: APT41's Dual Operations - Mandiant M-Trends 2024

https://www.mandiant.com/m-trends

APT41 Exploits CVE-2024-23113 in Ivanti Connect Secure - Google TAG

https://blog.google/threat-analysis-group/apt41-compromises-networks-via-ivanti-connect-secure-vpn/

APT41 Compromises Networks via F5 BIG-IP Vulnerability

https://www.mandiant.com/resources/blog/apt41-compromises-networks-via-f5-big-ip

Double Trouble: APT41's Dual Operation Model

https://www.sentinelone.com/labs/apt41-double-dragon/

APT41 Leverages Google Command and Control in Recent Attacks

https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/apt41-google-command-control

Chinese APT Groups Rapidly Exploit New Zero-Days - Mandiant 2023

https://www.mandiant.com/resources/blog/chinese-apt-groups-exploit-zero-days

Double Dragon APT41, a dual espionage and cyber crime operation

https://www.group-ib.com/blog/apt41/

APT41 Likely Compromised Taiwanese Government-Affiliated Research Institute with ShadowPad and Cobalt Strike

https://www.trendmicro.com/en_us/research/23/h/apt41-likely-compromised-taiwanese-research-institute-with-shadowpad-cobaltstrike.html

KEYPLUG Backdoor Used by APT41

https://www.trendmicro.com/en_us/research/23/a/apt41-earth-longzhi.html