Malicious CrazyHunter Ransomware Toolkit Execution from Public Directory

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1486Data Encrypted for Impact
- T1489Service Stop

What it detects

This rule detects execution of CrazyHunter ransomware toolkit binaries such as go.exe go2.exe go3.exe and bb.exe from the C:\Users\Public directory, typically chained together by a ru.bat launcher script. These renamed tools stage encryption and defense evasion during a CrazyHunter intrusion, and running such binaries from a world-writable path is a strong indicator of hands-on-keyboard ransomware deployment.

Reporting behind it

Related detections9 linkedT1486 — drag to rearrange

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Malicious DarkAngels Linux Ransomware Ransom Note Creation via File System (via file_event)

Malicious DarkAngels Linux Ransomware Encrypted Extension and Log Artifacts via File System (via file_event)

Malicious Cyclops Ransomware File Artifacts (via file_event)

Malicious Mallox Ransomware Encryption Artifacts via Ransom Note and Extension (via file_event)

Malicious Backup and Recovery Destruction Chain via Dire Wolf Ransomware (via process_creation)

Malicious Dire Wolf Ransomware Encrypted File Extension on Disk (via file_event)

Malicious Lynx Ransomware Encryption Execution (via process_creation)

Malicious CrazyHunter Ransomware Toolkit Execution from Public Directory

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.

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