Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
35 lines
979 B
YAML
35 lines
979 B
YAML
title: Linux Base64 Encoded Pipe to Shell
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id: ba592c6d-6888-43c3-b8c6-689b8fe47337
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status: test
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description: Detects suspicious process command line that uses base64 encoded input for execution with a shell
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references:
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- https://github.com/arget13/DDexec
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- https://www.mandiant.com/resources/blog/barracuda-esg-exploited-globally
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author: pH-T (Nextron Systems)
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date: 2022-07-26
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modified: 2023-06-16
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tags:
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- attack.defense-evasion
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- attack.t1140
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logsource:
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product: linux
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category: process_creation
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detection:
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selection_base64:
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CommandLine|contains: 'base64 '
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selection_exec:
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- CommandLine|contains:
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- '| bash '
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- '| sh '
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- '|bash '
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- '|sh '
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- CommandLine|endswith:
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- ' |sh'
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- '| bash'
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- '| sh'
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- '|bash'
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condition: all of selection_*
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falsepositives:
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- Legitimate administration activities
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level: medium
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