Sigma rule: Winrar Compressing Dump Files

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-ae85d3e7febb, updated 2023-09-12T00:00:00.000Z.

Rule

Title
Winrar Compressing Dump Files
Status
test
Level
medium
Author
Florian Roth (Nextron Systems)
Date
2022-01-04
Modified
2023-09-12
File
rules/windows/process_creation/proc_creation_win_winrar_exfil_dmp_files.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

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.

Log source

product
windows
category
process_creation

Detection

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

False positives (as the rule lists them)

  • Legitimate use of WinRAR with a command line in which ".dmp" or ".dump" appears accidentally
  • Legitimate use of WinRAR to compress WER ".dmp" files for troubleshooting

Tags

  • attack.collection
  • attack.t1560.001

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_winrar_exfil_dmp_files.yml

Sources and licences

  • SigmaHQ

    "Winrar Compressing Dump Files" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_winrar_exfil_dmp_files.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Winrar Compressing Dump Files",
entity page, dataset version ref-ae85d3e7febb, updated 2023-09-12T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/1ac14d38-3dfc-4635-92c7-e3fd1c5f5bfc (accessed 2026-11-03).
Underlying source: SigmaHQ rule 1ac14d38-3dfc-4635-92c7-e3fd1c5f5bfc, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.