Malicious Mimikatz Malicious Security Package (SSP) Exfiltrates Cleartext Passwords in File (via file_event)
- Product
- windows
- Category
- file_event
- Author
- HuntRule
- Published
- 2026-06-02
- Updated
- 2026-08-28
ATT&CK techniques
Cred AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects loaded the Mimikatz SSP "mimilib.dll" into the LSA process in order to exfiltrate clear text passwords into a file.
Reporting behind it
- attack.mitre.orghttps://attack.mitre.org/techniques/T1003/
- pentestlab.bloghttps://pentestlab.blog/2019/10/21/persistence-security-support-provider/
- github.comhttps://github.com/S1ckB0y1337/Active-Directory-Exploitation-Cheat-Sheet#custom-ssp
- learn.microsoft.comhttps://learn.microsoft.com/en-us/sysinternals/downloads/sysmon
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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