huntrule

Suspicious Domain Computer Enumeration via Net Group Command

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-16
Updated
2026-10-16
AnalysisDetection

ATT&CK techniques

Discovery

  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 detects enumeration of domain computer accounts via the net group domain computers command which the RM3 banking malware used for network discovery as documented by NCC Group. Adversaries enumerate domain assets to plan lateral movement and identify high value targets.

Reporting behind it

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Suspicious SOAPHound Style LDAP Query with SDflags and all_with_list via security
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Suspicious LDAP Security Descriptor Enumeration via SD_FLAGS Control
Suspicious LDAP Query Enumerating Kerberos Preauth Disabled Accounts with Whitespace Evasion
Suspicious Domain Computer Enumeration via Net Group Command
Pivot detection · T1087.002 · 9 related

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