Suspicious CTF-Framed Vulnerability Scanner User Agent via Webserver
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-06-25
- Updated
- 2026-08-28
ATT&CK techniques
ReconRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects HTTP User-Agents matching the CTF and CVE-hunt framing that attackers use while jailbreaking LLM services and mass-scanning for vulnerabilities. These agents self-identify with capture-the-flag and CVE-scanner labels as part of automated probing. Their presence indicates reconnaissance against internet-facing AI applications.
Reporting behind it
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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