Rundll32 Dumping Credentials with MiniDump Function (RedCanary Threat Detection Report)

 1title: Rundll32 Dumping Credentials with MiniDump Function (RedCanary Threat Detection Report)
 2id: b1bab1c9-9dc4-499e-aa9e-5c1b707c21e1
 3status: experimental
 4description: Detects processes that seem to be rundll32.exe along with a command line containing the term MiniDump. Part of the RedCanary 2023 Threat Detection Report.
 5references:
 6    - https://redcanary.com/threat-detection-report/techniques/lsass-memory/
 7author: RedCanary, Sigma formatting by Micah Babinski
 8date: 2023/05/10
 9tags:
10    - attack.credential_access
11    - attack.t1003.001
12logsource:
13    category: process_creation
14    product: windows
15detection:
16    selection:
17        Image|endswith: '\rundll32.exe'
18        CommandLine|contains: 'MiniDump'
19    condition: selection
20falsepositives:
21    - Unknown
22level: low```

References

• LSASS Memory - Red Canary Threat Detection Report

  

  Because of the amount of data it stores in memory, LSASS is a common target for adversaries looking to steal sensitive credentials.

  
  Read More

Related rules

• Abnormal LSASS Child and Parent Process Relationships (RedCanary Threat Detection Report)
• Abnormal LSASS Process Access and Injection (RedCanary Threat Detection Report)
• LSASS Running Under Non-Privileged User Context (RedCanary Threat Detection Report)
• Process Memory Dump via RdrLeakDiag.EXE
• Suspicious Dump64.exe Execution