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Threat actorIranTracked since 2026-10

Bohrium

Also known as:Imperial KittenCURIUM - G1012Tortoiseshell

As of 2026-11-11, Bohrium is a Iran-nexus threat actor tracked by Threadlinqs Intelligence across 3 threats spanning apt, malware. Also known as Imperial Kitten, CURIUM - G1012, Tortoiseshell. ATT&CK coverage spans 46 techniques across 12 tactics in 3 of 3 tracked threats. Most-observed techniques: T1071.001 (Web Protocols), T1027 (Obfuscated Files or Information), T1036.005 (Match Legitimate Resource Name or Location).

Tracked threats
33 high
First seen
2026-10-20
Last seen
2026-11-11
ATT&CK techniques
46across 3 of 3 threats
Related CVEs
0None referenced
Attribution
IranNation or origin
Nation: Iran · 3 tracked threat(s) · Categories: APT, MALWARE

Activity timeline

Bohrium appears in 3 tracked threats between and ; the busiest month was 2026-10 with 2 reports.

ATT&CK techniques observed

46 techniques observed across 3 of 3 tracked threats · Stealth (formerly Defense Evasion) (8), Initial Access (6), Command and Control (5), Credential Access (5), Persistence (5), Collection (4)
  • T1071.001 Web Protocols — Command and Controlobserved in 3 of 3 tracked threats
  • T1027 Obfuscated Files or Information — Stealth (formerly Defense Evasion)observed in 2 of 3 tracked threats
  • T1036.005 Match Legitimate Resource Name or Location — Stealth (formerly Defense Evasion)observed in 2 of 3 tracked threats
  • T1082 System Information Discovery — Discoveryobserved in 2 of 3 tracked threats
  • T1204.002 Malicious File — Executionobserved in 2 of 3 tracked threats
  • T1547.001 Boot or Logon Autostart Execution — Persistenceobserved in 2 of 3 tracked threats
  • T1566.002 Spearphishing Link — Initial Accessobserved in 2 of 3 tracked threats
  • T1572 Protocol Tunneling — Command and Controlobserved in 2 of 3 tracked threats
  • T1573.001 Symmetric Cryptography — Command and Controlobserved in 2 of 3 tracked threats
  • T1574.001 DLL — Stealth (formerly Defense Evasion)observed in 2 of 3 tracked threats
  • T1583.001 Domains — Resource Developmentobserved in 2 of 3 tracked threats
  • T1583.006 Acquire Infrastructure: Web Services — Resource Developmentobserved in 2 of 3 tracked threats
  • T1003.006 DCSync — Credential Accessobserved in 1 of 3 tracked threats
  • T1008 Fallback Channels — Command and Controlobserved in 1 of 3 tracked threats
  • T1027.007 Dynamic API Resolution — Stealth (formerly Defense Evasion)observed in 1 of 3 tracked threats

Tracked threats