Suspicious SonicWall Access With Anomalous Chrome Linux User Agent via Webserver

ATT&CK techniques

Recon → Initial Access

Recon
- T1595.002Vulnerability 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 requests to SonicWall SSL-VPN and login endpoints that carry an automated-tool signature combining a Chrome 119 on Linux user agent with the campaign target paths. The reconnaissance campaign against SonicWall firewalls presents this consistent Chrome Linux user agent while probing management endpoints from commercial proxy infrastructure. Correlating the anomalous user agent with SonicWall endpoints surfaces scripted scanning that generic path-only detection may miss.

Reporting behind it

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Suspicious SonicWall Access With Anomalous Chrome Linux User Agent via Webserver

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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