Threat Huntmediumtest
.Class Extension URI Ending Request
Detects requests to URI ending with the ".class" extension in proxy logs. 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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Hunting Hypothesis
Log Source
Proxy Log
CategoryProxy Log← raw: proxy
Detection Logic
Detection Logic1 selector
detection:
selection:
c-uri|endswith: '.class'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Other
detection.threat-hunting
Rule Metadata
Rule ID
53c15703-b04c-42bb-9055-1937ddfb3392
Status
test
Level
medium
Type
Threat Hunt
Created
Tue Dec 21
Modified
Mon Feb 26
Author
Path
rules-threat-hunting/web/proxy_generic/proxy_susp_class_extension_request.yml
Raw Tags
attack.initial-accessdetection.threat-hunting