Winrar Compressing Dump Files

calendar Oct 18, 2023 · attack.collection attack.t1560.001  ·
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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.

Sigma rule (View on GitHub)

 1title: Winrar Compressing Dump Files
 2id: 1ac14d38-3dfc-4635-92c7-e3fd1c5f5bfc
 3related:
 4    - id: ec570e53-4c76-45a9-804d-dc3f355ff7a7
 5      type: similar
 6status: experimental
 7description: 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.
 8references:
 9    - https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/
10author: Florian Roth (Nextron Systems)
11date: 2022/01/04
12modified: 2023/09/12
13tags:
14    - attack.collection
15    - attack.t1560.001
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection_img:
21        - Image|endswith:
22              - '\rar.exe'
23              - '\winrar.exe'
24        - Description: 'Command line RAR'
25    selection_extension:
26        CommandLine|contains:
27            - '.dmp'
28            - '.dump'
29            - '.hdmp'
30    condition: all of selection_*
31falsepositives:
32    - Legitimate use of WinRAR with a command line in which ".dmp" or ".dump" appears accidentally
33    - Legitimate use of WinRAR to compress WER ".dmp" files for troubleshooting
34level: medium

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