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Threat actorNorth Korea (APT43/Kimsuky claim, unverified); Unknown (data brokers)Tracked since 2026-06

Everest ransomware group

Also known as:Black BansheeEarth KumihoEmerald SleetG0086Operation Stolen PencilPatheticSlugSparkling PiscesSpringtailTA427THALLIUMVelvet ChollimaKimsuky

As of 2026-10-23, Everest ransomware group is a North Korea (APT43/Kimsuky claim, unverified); Unknown (data brokers)-nexus threat actor tracked by Threadlinqs Intelligence across 2 threats spanning ransomware, data breach. Also known as Black Banshee, Earth Kumiho, Emerald Sleet, G0086. ATT&CK coverage spans 27 techniques across 12 tactics in 2 of 2 tracked threats. Most-observed techniques: T1078 (Valid Accounts), T1133 (External Remote Services), T1650 (Acquire Access).

Tracked threats
21 high · 1 medium
First seen
2026-06-15
Last seen
2026-10-23
ATT&CK techniques
27across 2 of 2 threats
Related CVEs
0None referenced
Attribution
North Korea (APT43/Kimsuky claim, unverified); Unknown (data brokers)Nation or origin
Nation: North Korea (APT43/Kimsuky claim, unverified); Unknown (data brokers) · 2 tracked threat(s) · Categories: RANSOMWARE, DATA_BREACH

Activity timeline

Everest ransomware group appears in 2 tracked threats between and ; the busiest month was 2026-06 with 1 report.

ATT&CK techniques observed

27 techniques observed across 2 of 2 tracked threats · Initial Access (5), Resource Development (4), Collection (3), Stealth (formerly Defense Evasion) (3), Command and Control (2), Credential Access (2)
  • T1078 Valid Accounts — Initial Accessobserved in 2 of 2 tracked threats
  • T1133 External Remote Services — Initial Accessobserved in 2 of 2 tracked threats
  • T1650 Acquire Access — Resource Developmentobserved in 2 of 2 tracked threats
  • T1657 Financial Theft — Impactobserved in 2 of 2 tracked threats
  • T1003.001 OS Credential Dumping: LSASS Memory — Credential Accessobserved in 1 of 2 tracked threats
  • T1003.003 OS Credential Dumping: NTDS — Credential Accessobserved in 1 of 2 tracked threats
  • T1014 Rootkit — Stealth (formerly Defense Evasion)observed in 1 of 2 tracked threats
  • T1021.001 Remote Desktop Protocol — Lateral Movementobserved in 1 of 2 tracked threats
  • T1027 Obfuscated Files or Information — Stealth (formerly Defense Evasion)observed in 1 of 2 tracked threats
  • T1046 Network Service Discovery — Discoveryobserved in 1 of 2 tracked threats
  • T1048 Exfiltration Over Alternative Protocol — Exfiltrationobserved in 1 of 2 tracked threats
  • T1059 Command and Scripting Interpreter — Executionobserved in 1 of 2 tracked threats
  • T1068 Exploitation for Privilege Escalation — Privilege Escalationobserved in 1 of 2 tracked threats
  • T1070 Indicator Removal — Stealth (formerly Defense Evasion)observed in 1 of 2 tracked threats
  • T1119 Automated Collection — Collectionobserved in 1 of 2 tracked threats

Tracked threats