Malicious BadIIS SEO Poisoning C2 Request via Web Server (via webserver)

ATT&CK techniques

Persistence → C2

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1505.004IIS Components
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.001Web Protocols
Exfiltration
Impact

What it detects

This rule detects HTTP requests to the hardcoded BadIIS command-and-control endpoint used by the Operation Rewrite SEO poisoning campaign. The BadIIS native IIS module intercepts requests and communicates with attacker infrastructure through this fixed URI path. Detecting these requests exposes a compromised IIS server acting as a malicious proxy for SEO fraud and traffic redirection.

Reporting behind it

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Malicious BadIIS SEO Poisoning C2 Request via Web Server (via webserver)

Pivot detection · T1071.001 · 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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