LoFP / legitimate use of winrar to compress wer \".dmp\" files for troubleshooting

Techniques

• t1560
• t1560.001

Sample rules

Winrar Compressing Dump Files

• source: sigma
• technicques:
  • t1560
  • t1560.001

Description

Detects execution of WinRAR in order to compress a file with a “.dmp”/".dump" extension, which could be a step in a process of dump file exfiltration.

Detection logic

condition: all of selection_*
selection_extension:
  CommandLine|contains:
  - .dmp
  - .dump
  - .hdmp
selection_img:
- Image|endswith:
  - \rar.exe
  - \winrar.exe
- Description: Command line RAR