malware npm

js-logger-pack

discovered 2026-04-15

js-logger-pack is a malicious npm package (29 versions, 2026-04-01 to 2026-04-20) that evolved from an SSH backdoor and infostealer into a binary dropper for MicrosoftSystem64, an 81 MB Node.js SEA RAT with 24 remote tasks covering browser credential theft (15 families), 80+ crypto wallet extensions, keylogging, clipboard monitoring, screenshot capture to HuggingFace, Telegram session hijack, SSH key exfiltration, and remote shell access. Attributed to DPRK Famous Chollima / Contagious Interview via jpeek868 account linkage. OSV: MAL-2026-2827 / GHSA-mj89-jrhm-qxhc.

Threat types

credential_stealer crypto_drainer data_exfiltration persistence c2_agent

Malicious versions

  • 0.0.1
  • 1.0.0
  • 1.1.0
  • 1.1.2
  • 1.1.4
  • 1.1.5
  • 1.1.6
  • 1.1.7
  • 1.1.8
  • 1.1.9
  • 1.1.10
  • 1.1.14
  • 1.1.17
  • 1.1.18
  • 1.1.19
  • 1.1.20
  • 1.1.21
  • 1.1.22
  • 1.1.23
  • 1.1.24
  • 1.1.25
  • 1.1.26

Campaigns

Indicators

Techniques

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