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🇮🇷APT33

🇮🇷 APT33 is a tracked threat actor in the Clankerusecase corpus. Attributed to IR. Primary motivation: State. We map 25 detection use cases to this actor across 47 MITRE ATT&CK techniques, with 1 threat-intel article citing them. Active in our corpus from 2026-03-12 to 2026-03-12.

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View full actor card → All threat actors MITRE ATT&CK group spec (G0064) ↗

25Use cases

1Articles

47Techniques

0IOCs

Known aliases

APT33Refined KittenElfinHolmiumPeach SandstormHOLMIUM

Top techniques

T1190 · Exploit Public-Facing Application T1195.002 · Compromise Software Supply Chain T1486 · Data Encrypted for Impact

All other tracked techniques

T1003 · OS Credential Dumping T1003.001 · LSASS Memory T1003.004 · LSA Secrets T1003.005 · Cached Domain Credentials T1021.002 · SMB/Windows Admin Shares T1027.013 · Encrypted/Encoded File T1040 · Network Sniffing T1048.003 · Exfiltration Over Unencrypted Non-C2 Protocol T1053.005 · Scheduled Task T1059.001 · PowerShell T1059.003 · Windows Command Shell T1059.005 · Visual Basic T1068 · Exploitation for Privilege Escalation T1071.001 · Web Protocols T1078 · Valid Accounts T1078.004 · Cloud Accounts T1087 · Account Discovery T1098.005 · Device Registration T1105 · Ingress Tool Transfer T1110.003 · Password Spraying T1132.001 · Standard Encoding 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 T1219 · Remote Access Tools T1546.003 · Windows Management Instrumentation Event Subscription T1547.001 · Registry Run Keys / Startup Folder T1552.001 · Credentials In Files T1552.006 · Group Policy Preferences T1555 · Credentials from Password Stores T1555.003 · Credentials from Web Browsers T1556.006 · Multi-Factor Authentication T1560.001 · Archive via Utility T1566 · Phishing T1566.001 · Spearphishing Attachment T1566.002 · Spearphishing Link T1569.002 · Service Execution T1571 · Non-Standard Port T1573.001 · Symmetric Cryptography T1588.002 · Tool T1621 · Multi-Factor Authentication Request Generation

Detection use cases (25)

APT33 / Peach Sandstorm password-spray → successful Entra ID sign-in → new device registration AI · profile S APT33 hands-on-keyboard: AnyDesk / Plink deployment after Entra ID foothold (Tickler / FalseFont staging) AI · profile SΣ MuddyWater SimpleHelp RMM client spawning shell or recon LOLBin Bespoke Iran-aligned MFA push-bombing followed by new auth method registered (AA24-290A) Bespoke Phishing-link click correlated to endpoint execution Internal Email attachment opened from external sender Internal Office app spawning script/LOLBin child process Internal Fake CAPTCHA / clipboard-injected PowerShell (ClickFix / FakeCaptcha) Internal Ransomware-style mass file rename / extension change Internal LSASS process access / dump (credential theft) Internal Remote service execution — PsExec / SMB lateral movement Internal RMM tool installed by non-IT user — remote-access utility for hands-on-keyboard Internal Trusted vendor binary / installer launching unusual children Internal 1Password impossible-travel sign-in MITRE match 1Password item exfiltration attempt MITRE match 1Password vault export attempted MITRE match AI/LLM Agent Framework Runtime Spawning Shell, Recon, or Egress Child Process MITRE match AI/LLM Framework Web Service Spawns Shell or Network Tool (Agent-Framework Unauthenticated RCE) 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-category credential-store enumeration with rapid egress to anonymizing tunnel/CDN 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 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

Threat-intel articles (1)

crit Cyber fallout from the Iran war: What to have on your radar · 2026-03-12