Malicious AquaShell Webshell Access on Cisco Secure Email Gateway by UAT-9686
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-09-12
- Updated
- 2026-09-12
ATT&CK techniques
PersistenceRecon
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 POST requests to the AquaShell Python webshell planted at the euq_webui index.py endpoint on Cisco Secure Email appliances. UAT-9686 uses this unauthenticated webshell to execute arbitrary commands on compromised gateways. Requests to this appliance path indicate active exploitation and remote command execution.
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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