Suspicious ffuf Fuzzing Requests Against Web Server

ATT&CK techniques

Recon → Initial Access

Recon
- T1595.003Wordlist Scanning
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects web requests carrying the ffuf fuzzer user agent or its FUZZ placeholder marker as covered in Elastic research on detecting web server probing in Traefik. These requests represent active directory and parameter brute forcing used to enumerate hidden endpoints before exploitation.

Reporting behind it

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Suspicious ffuf Fuzzing Requests Against Web Server

Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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