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.
24 lines
750 B
YAML
24 lines
750 B
YAML
title: .Class Extension URI Ending Request
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id: 53c15703-b04c-42bb-9055-1937ddfb3392
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status: test
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description: |
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Detects requests to URI ending with the ".class" extension in proxy logs.
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This could rules can be used to hunt for potential downloads of Java classes as seen for example in Log4shell exploitation attacks against Log4j.
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references:
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- https://web.archive.org/web/20231230220738/https://www.lunasec.io/docs/blog/log4j-zero-day/
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author: Andreas Hunkeler (@Karneades)
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date: 2021-12-21
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modified: 2024-02-26
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tags:
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- attack.initial-access
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- detection.threat-hunting
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logsource:
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category: proxy
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detection:
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selection:
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c-uri|endswith: '.class'
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condition: selection
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falsepositives:
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- Unknown
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level: medium
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