Threat-actor profile

← Back to main site

Home/ Threat Actors/ Bluenoroff

🇰🇵Bluenoroff

🇰🇵 Bluenoroff is a tracked threat actor in the Clankerusecase corpus. Attributed to KP. Primary motivation: State. We map 26 detection use cases to this actor across 77 MITRE ATT&CK techniques, with 2 threat-intel articles citing them. Active in our corpus from 2026-04-09 to 2026-06-16.

crit 1high 1

View full actor card → All threat actors MITRE ATT&CK group spec (G0098) ↗

26Use cases

2Articles

77Techniques

4IOCs

Known aliases

BluenoroffSapphire SleetTA444APT38NICKEL GLADSTONEBeagleBoyzStardust ChollimaCOPERNICIUM

Top techniques

T1190 · Exploit Public-Facing Application T1195.002 · Compromise Software Supply Chain T1204.002 · Malicious File

All other tracked techniques

T1003.007 · Proc Filesystem T1005 · Data from Local System T1027 · Obfuscated Files or Information T1027.002 · Software Packing T1033 · System Owner/User Discovery T1036.003 · Rename Legitimate Utilities T1036.005 · Match Legitimate Resource Name or Location T1036.006 · Space after Filename T1049 · System Network Connections Discovery T1053.003 · Cron T1053.005 · Scheduled Task T1055 · Process Injection T1056.001 · Keylogging T1057 · Process Discovery T1059.001 · PowerShell T1059.003 · Windows Command Shell T1059.005 · Visual Basic T1059.007 · JavaScript T1070.004 · File Deletion T1070.006 · Timestomp T1071 · Application Layer Protocol T1071.001 · Web Protocols T1071.004 · DNS T1082 · System Information Discovery T1083 · File and Directory Discovery T1105 · Ingress Tool Transfer T1106 · Native API T1110 · Brute Force T1112 · Modify Registry T1115 · Clipboard Data T1135 · Network Share Discovery T1140 · Deobfuscate/Decode Files or Information T1176 · Software Extensions T1189 · Drive-by Compromise T1204.001 · Malicious Link T1217 · Browser Information Discovery T1218.001 · Compiled HTML File T1218.005 · Mshta T1218.007 · Msiexec T1218.011 · Rundll32 T1219 · Remote Access Tools T1480.002 · Mutual Exclusion T1485 · Data Destruction T1486 · Data Encrypted for Impact T1505.003 · Web Shell T1518.001 · Security Software Discovery T1529 · System Shutdown/Reboot T1539 · Steal Web Session Cookie T1543.001 · Launch Agent T1543.002 · Systemd Service T1543.003 · Windows Service T1546 · Event Triggered Execution T1548.002 · Bypass User Account Control T1552.001 · Credentials In Files T1553.005 · Mark-of-the-Web Bypass T1555.003 · Credentials from Web Browsers T1561.002 · Disk Structure Wipe T1565.001 · Stored Data Manipulation T1565.002 · Transmitted Data Manipulation T1565.003 · Runtime Data Manipulation T1566 · Phishing T1566.001 · Spearphishing Attachment T1566.004 · Spearphishing Voice T1567.002 · Exfiltration to Cloud Storage T1569.002 · Service Execution T1571 · Non-Standard Port T1573 · Encrypted Channel T1583.001 · Domains T1588.002 · Tool T1685 · Disable or Modify Tools T1685.005 · Clear Windows Event Logs T1686 · Disable or Modify System Firewall T1686.002 · Network Device Firewall T1690 · Prevent Command History Logging

Detection use cases (26)

Bluenoroff/APT38 MOTW-evasion container chain — rundll32/regsvr32 ordinal-export DLL sideload from mounted/downloaded path AI · profile SΣDD Sapphire Sleet crypto-theft browser hijack — Chromium launched with --load-extension from a user-writable path by a non-browser parent AI · profile SΣDD npm install pulls malicious easy-day-js dropper (setup.cjs + .pkg marker files) Bespoke Node dropper fetches second stage from Hostwinds raw IP 23.254.164.92:8000 Bespoke Cross-platform stealer RAT C2 beacon to 23.254.164.123 Bespoke easy-day-js stealer persistence masquerading as Node tooling (NodePackages / LaunchAgent / systemd) Bespoke Mastra easy-day-js second-stage stealer payload by SHA256 Bespoke Beaconing — periodic outbound to small set of destinations Internal Network connections to article IPs / domains Internal Suspicious browser extension installation Internal Infostealer — non-browser process accessing browser cookie/login DBs Internal Crypto-wallet file/keystore access by non-wallet process Internal PowerShell encoded / obfuscated command Internal Trusted vendor binary / installer launching unusual children Internal 1Password failed sign-in burst 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 Developer/Data-tooling Daemon Spawns Shell Child Seconds After POST to Runner/Exec Endpoint MITRE match Internet-Facing Service Daemon Spawns Shell or Ingress Tool Then Beacons Out 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 Low-Code / AI Workflow Runtime Sandbox-Escape — Server Process Spawns Shell + Public Egress MITRE match Non-Browser Process Reads Browser Credential / Cookie SQLite Then Egresses to Public Destination Within 10 Minutes MITRE match Package Manager / Dev-Tool Auto-Execution Triggers Non-Registry Egress or Credential-Store Access MITRE match Package Manager Install Spawning Outbound Egress to Non-Registry Infrastructure Within 5 Minutes MITRE match

Threat-intel articles (2)

crit A Forgotten Contributor Account Compromised the Entire Mastra npm Package Scope · 2026-06-16

high Behind the Scenes: How StepSecurity Detected and Helped Remediate the Largest npm Supply Chain Attack · 2026-04-09

Tracked indicators

Domains (2)

hwsrv-1327785.hostwindsd hwsrv-1327786.hostwindsd

IP addresses (2)

23.254.164.123 23.254.164.92