SACL modified on a system object.
Removing audit SACLs from sensitive objects (LSASS, SAM) to blind object-access auditing before credential dumping.
Alert: SACL removal from sensitive system objects.
SubjectUserNameTargetUserNameLogonTypeIpAddressWorkstationName | Tactic | Technique |
|---|---|
| Defense Evasion | Impair Defenses (T1562) |
Starting points — adapt the log source, projected fields and thresholds for your environment.
SecurityEvent
| where EventID == 4715 // The audit policy (SACL) on an object was changed
| project TimeGenerated, Computer, SubjectUserName, TargetUserName, LogonType, IpAddress, WorkstationName
| sort by TimeGenerated desc
index=* sourcetype="WinEventLog:Security" EventCode=4715
| stats count earliest(_time) as first_seen latest(_time) as last_seen by ComputerName
| sort - count `# The audit policy (SACL) on an object was changed — add EventData fields: SubjectUserName, TargetUserName, LogonType, IpAddress`
The audit policy (SACL) on an object was changed. SACL modified on a system object.
Event 4715 is written to the Security channel by Microsoft-Windows-Security-Auditing. Advanced Audit Policy — enable the 'Policy Change' subcategory (Success and/or Failure).
Event 4715 is associated with: Impair Defenses (T1562).
Alert: SACL removal from sensitive system objects.