huntrule

Windows Security: Detect LSASS handle access for SAM_DOMAIN (0x705)

Flags handle opens to lsass.exe with access mask 0x705 targeting SAM_DOMAIN, indicative of credential dumping.

FreeReviewedSigma · High · v2
Product
windows
Service
security
Author
sigma (SigmaHQ), DRL 1.1
Published
2017-02-12
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Cred Access

  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

  14. Impact

What it detects

This rule flags Windows Security Event ID 4656 events where a process requests a specific access mask (0x705) to the LSASS process and targets the SAM_DOMAIN object type. Such handle access can indicate attempts to access credential material from LSASS, which attackers commonly leverage during credential dumping. The detection relies on audit telemetry for process handle creation (Event 4656) including the target process name, object type, and access mask.

Reporting behind it

Related detections9 linkedT1003.001 — drag to rearrange
Malicious WDigest Credential Caching Enabled via Registry (via registry_set)
Malicious Credential Dumping via Mimikatz Sekurlsa Command
Malicious Mimikatz Sekurlsa Logonpasswords Credential Dump
Malicious LSASS Credential Dump via ProcDump (via process_creation)
Malicious LSASS Memory Dump via comsvcs.dll by Salt Typhoon
Malicious LSASS Dump via Process Access (via process_access)
Malicious LSASS Credential Dump with LSASSY - Process (via process_creation)
Malicious LSASS Credential Dump with LSASSY - Admin Share (via security)
Malicious Task Manager Used for LSASS Dump - Kernel (via security)
Windows Security: Detect LSASS handle access for SAM_DOMAIN (0x705)
Pivot detection · T1003.001 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. v1
    No changelog recorded for this version.2026-07-30

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