Home/ Threat Actors/ APT29

🇷🇺APT29

🇷🇺 APT29 is a tracked threat actor in the Clankerusecase corpus. Attributed to RU. Primary motivation: State. We map 26 detection use cases to this actor across 88 MITRE ATT&CK techniques, with 5 threat-intel articles citing them. Active in our corpus from 2026-02-08 to 2026-06-08.

crit 2high 1med 1low 1

View full actor card → All threat actors MITRE ATT&CK group spec (G0016) ↗

26Use cases

5Articles

88Techniques

6IOCs

Known aliases

APT29Cozy BearNobeliumMidnight BlizzardThe DukesYTTRIUMSVRIRON RITUALIRON HEMLOCKNobleBaronDark HaloNOBELIUMUNC2452CozyDukeSolarStormBlue KitsuneUNC3524

Top techniques

T1190 · Exploit Public-Facing Application T1566 · Phishing T1566.002 · Spearphishing Link

All other tracked techniques

T1003.002 · Security Account Manager T1003.004 · LSA Secrets T1005 · Data from Local System T1016.001 · Internet Connection Discovery T1021.002 · SMB/Windows Admin Shares T1021.007 · Cloud Services T1027 · Obfuscated Files or Information T1027.001 · Binary Padding T1027.002 · Software Packing T1027.006 · HTML Smuggling T1036.005 · Match Legitimate Resource Name or Location T1037 · Boot or Logon Initialization Scripts T1037.004 · RC Scripts T1047 · Windows Management Instrumentation T1053.005 · Scheduled Task T1059.001 · PowerShell T1059.005 · Visual Basic T1059.006 · Python T1059.009 · Cloud API T1068 · Exploitation for Privilege Escalation T1070.004 · File Deletion T1070.006 · Timestomp T1071 · Application Layer Protocol T1071.001 · Web Protocols T1078 · Valid Accounts T1078.003 · Local Accounts T1078.004 · Cloud Accounts T1087 · Account Discovery T1087.004 · Cloud Account T1090.002 · External Proxy T1090.003 · Multi-hop Proxy T1090.004 · Domain Fronting T1098.001 · Additional Cloud Credentials T1098.002 · Additional Email Delegate Permissions T1098.005 · Device Registration T1105 · Ingress Tool Transfer T1110.001 · Password Guessing T1110.003 · Password Spraying T1114.002 · Remote Email Collection T1127.001 · MSBuild T1133 · External Remote Services T1136.003 · Cloud Account T1195.002 · Compromise Software Supply Chain T1199 · Trusted Relationship T1203 · Exploitation for Client Execution T1204.001 · Malicious Link T1204.002 · Malicious File T1204.004 · Malicious Copy and Paste T1218 · System Binary Proxy Execution T1218.005 · Mshta T1219 · Remote Access Tools T1505.003 · Web Shell T1528 · Steal Application Access Token T1546.003 · Windows Management Instrumentation Event Subscription T1546.008 · Accessibility Features T1547.001 · Registry Run Keys / Startup Folder T1548.002 · Bypass User Account Control T1550 · Use Alternate Authentication Material T1550.001 · Application Access Token T1550.003 · Pass the Ticket T1553.005 · Mark-of-the-Web Bypass T1556.007 · Hybrid Identity T1566.001 · Spearphishing Attachment T1566.003 · Spearphishing via Service T1566.004 · Spearphishing Voice T1568 · Dynamic Resolution T1569.002 · Service Execution T1573 · Encrypted Channel T1573.002 · Asymmetric Cryptography T1574.002 · T1574.002 T1583.001 · Domains T1583.006 · Web Services T1586.002 · Email Accounts T1586.003 · Cloud Accounts T1587.001 · Malware T1587.003 · Digital Certificates T1588.002 · Tool T1595.002 · Vulnerability Scanning T1606.002 · SAML Tokens T1621 · Multi-Factor Authentication Request Generation T1649 · Steal or Forge Authentication Certificates T1651 · Cloud Administration Command T1656 · T1656 T1665 · Hide Infrastructure T1685.002 · Disable or Modify Cloud Log

Detection use cases (26)

APT29 / Midnight Blizzard service principal credential addition followed by app-only Exchange Online access AI · profile SDD APT29 / Midnight Blizzard residential-proxy password spray landing on legacy-auth account AI · profile SDD External MS Teams chat invite from IT-impersonating unmanaged or federated tenant Bespoke MFA approval within minutes of inbound external Microsoft Teams chat Bespoke Activity involving ommicrosoft.com Cloaked-Ursa Teams typosquat Bespoke Phishing-link click correlated to endpoint execution Internal Email attachment opened from external sender Internal Office app spawning script/LOLBin child process Internal Microsoft Teams external-tenant chat from unverified IT-helpdesk impersonator Internal RMM tool installed by non-IT user — remote-access utility for hands-on-keyboard Internal Fake CAPTCHA / clipboard-injected PowerShell (ClickFix / FakeCaptcha) Internal Network connections to article IPs / domains Internal Curious Serpens / APT29 ROADtools-pattern: device registration immediately following non-interactive token acquisition Bespoke UTA0355 device-code phishing: deviceCode auth flow with cross-IP token redemption Bespoke 1Password activity from Tor exit node MITRE match 1Password impossible-travel sign-in MITRE match Auth-Bypass on Public-Facing Service → Post-Exploit Action on Same Host (≤10 min) MITRE match Brand-Impersonation Domain Fetch Followed by User-Context Loader Within 10 Minutes MITRE match Cross-Platform ClickFix Paste-to-Pipe Loader (UI-Parent Shell with Decode-and-Execute Payload) MITRE match Developer package install spawning script-host with non-registry C2 within 5 minutes MITRE match Edge-service post-exploitation chain: internet-facing daemon → child shell or token redemption within 10 min of external request MITRE match Install-Triggered Registry Publish or Git Push (Supply-Chain Worm Self-Propagation) MITRE match Internet-Facing Service Process Spawning Unix Shell or Ingress-Tool LOLBin (Edge Zero-Day Post-Exploit) MITRE match Internet-facing service process spawns shell/LOLBin within minutes of public inbound connection — post-RCE command execution MITRE match Language-runtime server (node/python/java) spawns OS shell shortly after inbound request — eval / sandbox-escape exploitation chain MITRE match Linux LPE chain — anomalous algif_aead/esp4/esp6/rxrpc kernel-module load followed by same-user root transition MITRE match

Threat-intel articles (5)

high When “Hi, This Is IT” Comes Through Microsoft Teams · 2026-06-08

crit Paved With Intent: ROADtools and Nation-State Tactics in the Cloud · 2026-05-22

low EasterBunny: advanced espionage artifacts attributed to APT29 · 2026-05-06

crit PlugX Meeting Invitation via MSBuild and GDATA · 2026-02-26

med The GRU illegals · 2026-02-08

Tracked indicators

Domains (6)

decoorat.net decoraat.net gesecole.net ommicrosoft.com onedow.gesecole.net onedown.gesecole.net