39 lines
1.2 KiB
YAML
39 lines
1.2 KiB
YAML
title: Rar with Password or Compression Level
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author: '@ROxPinTeddy'
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date: 2020/05/12
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description: Detects the use of rar.exe, on the command line, to create an archive
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with password protection or with a specific compression level. This is pretty
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indicative of malicious actions.
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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CommandLine: '* -hp*'
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SELECTION_3:
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CommandLine: '* -m*'
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SELECTION_4:
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CommandLine: '* a *'
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condition: (SELECTION_1 and (SELECTION_2) and (SELECTION_3 or SELECTION_4))
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falsepositives:
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- Legitimate use of Winrar command line version
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- Other command line tools, that use these flags
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id: faa48cae-6b25-4f00-a094-08947fef582f
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level: medium
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logsource:
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category: process_creation
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product: windows
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modified: 2021/07/27
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references:
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- https://labs.sentinelone.com/the-anatomy-of-an-apt-attack-and-cobaltstrike-beacons-encoded-configuration/
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- https://ss64.com/bash/rar.html
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1560.001/T1560.001.md
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status: experimental
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tags:
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- attack.collection
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- attack.t1560.001
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- attack.exfiltration
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- attack.t1002
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yml_filename: win_susp_rar_flags.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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