43 lines
1.2 KiB
YAML
43 lines
1.2 KiB
YAML
title: Data Compressed - rar.exe
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author: Timur Zinniatullin, E.M. Anhaus, oscd.community
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date: 2019/10/21
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description: An adversary may compress data (e.g., sensitive documents) that is collected
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prior to exfiltration in order to make it portable and minimize the amount of
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data sent over the network.
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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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Image: '*\rar.exe'
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SELECTION_3:
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CommandLine: '* a *'
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
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falsepositives:
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- Highly likely if rar is a default archiver in the monitored environment.
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fields:
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- Image
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- CommandLine
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- User
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- LogonGuid
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- Hashes
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- ParentProcessGuid
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- ParentCommandLine
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id: 6f3e2987-db24-4c78-a860-b4f4095a7095
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level: low
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logsource:
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category: process_creation
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product: windows
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modified: 2020/08/29
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1560.001/T1560.001.md
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- https://eqllib.readthedocs.io/en/latest/analytics/1ec33c93-3d0b-4a28-8014-dbdaae5c60ae.html
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status: experimental
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tags:
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- attack.exfiltration
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- attack.t1002
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- attack.collection
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- attack.t1560.001
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yml_filename: win_data_compressed_with_rar.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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