Threadlinqs IntelligenceStart free

Threat actorNorth KoreaTracked since 2026-02

APT37

Also known as:APT 37APT-C-28ATK4G0067Group 123Group123InkySquidMoldy PiscesOperation DaybreakOperation ErebusReaperReaper Group

As of 2026-07-19, APT37 is a North Korea-nexus threat actor tracked by Threadlinqs Intelligence across 8 threats spanning apt, campaign, malware. Also known as APT 37, APT-C-28, ATK4, G0067. ATT&CK coverage spans 119 techniques across 17 tactics in 8 of 8 tracked threats. Most-observed techniques: T1140 (Deobfuscate/Decode Files or Information), T1027 (Obfuscated Files or Information), T1113 (Screen Capture).

Tracked threats
87 high · 1 medium
First seen
2026-02-27
Last seen
2026-07-19
ATT&CK techniques
119across 8 of 8 threats
Related CVEs
1Referenced by its activity
Attribution
North KoreaNation or origin
Nation: North Korea · 8 tracked threat(s) · Categories: APT, CAMPAIGN, MALWARE

Activity timeline

APT37 appears in 8 tracked threats between and ; the busiest month was 2026-06 with 3 reports.

ATT&CK techniques observed

119 techniques observed across 8 of 8 tracked threats · Stealth (formerly Defense Evasion) (23), Collection (16), Discovery (14), Command and Control (10), Initial Access (10), Resource Development (10)
  • T1140 Deobfuscate/Decode Files or Information — Stealth (formerly Defense Evasion)observed in 8 of 8 tracked threats
  • T1027 Obfuscated Files or Information — Stealth (formerly Defense Evasion)observed in 7 of 8 tracked threats
  • T1113 Screen Capture — Collectionobserved in 7 of 8 tracked threats
  • T1005 Data from Local System — Collectionobserved in 6 of 8 tracked threats
  • T1041 Exfiltration Over C2 Channel — Exfiltrationobserved in 6 of 8 tracked threats
  • T1082 System Information Discovery — Discoveryobserved in 6 of 8 tracked threats
  • T1102 Web Service — Command and Controlobserved in 6 of 8 tracked threats
  • T1105 Ingress Tool Transfer — Command and Controlobserved in 6 of 8 tracked threats
  • T1083 File and Directory Discovery — Discoveryobserved in 5 of 8 tracked threats
  • T1123 Audio Capture — Collectionobserved in 5 of 8 tracked threats
  • T1010 Application Window Discovery — Discoveryobserved in 4 of 8 tracked threats
  • T1025 Data from Removable Media — Collectionobserved in 4 of 8 tracked threats
  • T1056 Input Capture — Collectionobserved in 4 of 8 tracked threats
  • T1057 Process Discovery — Discoveryobserved in 4 of 8 tracked threats
  • T1059 Command and Scripting Interpreter — Executionobserved in 4 of 8 tracked threats

Tracked threats

Related CVEs

1 CVE referenced by tracked APT37 activity