Suspicious Archiving of Registry Hives via WinRAR (UAT-8099)

ATT&CK techniques

Cred Access → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1003.002Security Account Manager
Discovery
Lateral Movement
Collection
- T1560.001Archive via Utility
C2
Exfiltration
Impact

What it detects

This rule detects use of WinRAR to compress the SAM and SYSTEM registry hives for exfiltration. UAT-8099 archives these hives to extract credentials offline from compromised IIS servers. Archiving registry hives is a collection step supporting credential access and later exfiltration.

Reporting behind it

Related detections9 linkedT1560.001 — drag to rearrange

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Suspicious Multi-Volume RAR Archiving for Collection by EAGERBEE

Suspicious Archiving of Registry Hives via WinRAR (UAT-8099)

Pivot detection · T1560.001 · 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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