Malicious RansomHub Encryptor Execution via amd64.exe Path and Pass Flags (via process_creation)

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-26
Updated
2026-09-26

ATT&CK techniques

Impact
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

What it detects

This rule detects the RansomHub encryptor launched as amd64.exe with the -path drive-targeting and -pass flags observed in Group-IB RansomHub RaaS intrusions. Adversaries run this binary to encrypt mounted drives across the host for impact, so catching the distinctive command line surfaces the deployment stage before encryption completes.

Related detections9 linkedT1486 — drag to rearrange
Malicious RansomHub Ransom Note Creation via README Random Suffix Pattern (via file_event)
Malicious Ransomware Payload Execution via HWP Word Processor Spawning Executable from Temp
Suspicious javaw.exe Executing JAR From Masqueraded Roaming Directory via Interlock Ransomware (via process_creation)
Malicious NailaoLocker Ransom Note and Encrypted File Creation (via file_event)
Malicious Ransom Note and Encrypted Extension via Hakuna Matata Variant (via file_event)
Malicious Hunters International Ransomware Execution via rundll32
Malicious WannaCry Decryptor Launching Tor via process_creation
Malicious WannaCry tasksche Execution from mssecsvc Service via process_creation
Malicious Shadow Copy Deletion and Recovery Inhibition via process_creation
Malicious RansomHub Encryptor Execution via amd64.exe Path and Pass Flags (via process_creation)
Pivot detection · T1486 · 9 related

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