huntrule

Suspicious AdFind Person Object Enumeration via LDAP Filter

PremiumReviewedSigma · Medium · v1
Category
process_creation
Author
HuntRule
Published
2026-10-29
Updated
2026-10-29
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 the AdFind reconnaissance utility querying Active Directory for all person objects through an explicit objectcategory filter as observed during the IcedID to ransomware intrusion where the actor batch enumerated domain accounts prior to lateral movement and this matters because mass person object enumeration is a common precursor to privilege escalation and domain wide targeting.

Reporting behind it

Related detections9 linkedT1087.002 — drag to rearrange
Suspicious Active Directory Reconnaissance via In-Memory Offensive PowerShell (via ps_script)
Suspicious Active Directory Export via Csvde via Process Creation (via process_creation)
Suspicious AdFind Domain User Reconnaissance Output
Suspicious Active Directory Reconnaissance Output via ADRecon CSV (via file_event)
Suspicious Domain Computer Enumeration via Net Group Command
Suspicious Active Directory Enumeration via AdsiSearcher
Suspicious ADFind Active Directory Reconnaissance Execution
Malicious IcedID AdFind Active Directory Reconnaissance via Command Line
Suspicious ADFind Active Directory Enumeration (via process_creation)
Suspicious AdFind Person Object Enumeration via LDAP Filter
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.