Suspicious Browser and Wallet Credential Theft via JavaScript Stealer

PremiumReviewedSigma · Low · v1
Category
process_creation
Author
HuntRule
Published
2026-07-07
Updated
2026-08-28

ATT&CK techniques

Cred Access → Collection
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Discovery

  9. Lateral Movement

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects a script or process accessing browser and cryptocurrency wallet credential stores for Chrome, Edge, MetaMask, Phantom and 1Password, matching the INVISIBLEFERRET JavaScript stealer that packages stolen data into a ZIP for exfiltration. This credential and wallet harvesting supports DPRK financial theft in the EtherHiding campaign.

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Suspicious Browser and Wallet Credential Theft via JavaScript Stealer
Pivot detection · T1555.003 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.