T1550.002 Pass the Hash — Detection Rules

Source-backed rule directory

• NTLM Logon · test · low · {"product":"windows","service":"ntlm","definition":"Requires events from Microsoft-Windows-NTLM/Operational"}
• Successful Overpass the Hash Attempt · test · high · {"product":"windows","service":"security"}
• Pass the Hash Activity 2 · stable · medium · {"product":"windows","service":"security","definition":"The successful use of PtH for lateral movement between workstations would trigger event ID 4624"}
• Hacktool Ruler · test · high · {"product":"windows","service":"security"}
• NTLMv1 Logon Between Client and Server · test · medium · {"product":"windows","service":"system"}

Atlas deterministic concepts

T1550.002 Pass the Hash

MATCH(ntlm_network_logon_pattern_without_expected_interactive_context) AND source_host NOT_IN approved_admin_hosts -> ALERT

• Windows Security Event Logs
• Directory-Service Authentication Logs
• Atlas source section

Anomaly models

No exact Atlas model in this snapshot.

ATT&CK analytic guidance

DET0409 Detection Strategy for T1550.002 - Pass the Hash (Windows)

AN1144 Analytic 1144

Detects anomalous NTLM LogonType 3 authentications that occur without accompanying domain logon events, especially from lateral systems or involving built-in administrative tools. Monitors for mismatches between source user context and system being accessed. Correlates LogonSession creation, NTLM authentications, and process/service initiation to identify suspicious use of stolen password hashes for remote access or service logon without password entry. Detects overpass-the-hash by combining Kerberos ticket issuance with NTLM-based lateral movement.