Possible Spectre Ops C2 Beacon via nico and yfat Query Parameters via proxy

ATT&CK techniques

Cred Access → C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1555.003Credentials from Web Browsers
Discovery
Lateral Movement
Collection
C2
- T1071.001Web Protocols
Exfiltration
Impact

What it detects

This rule detects Spectre Ops stealer command and control traffic that posts to a PHP endpoint carrying the distinctive nico and yfat query parameters. These custom parameter names carry stolen data and bot identifiers to the panel. The parameter pairing uniquely fingerprints the exfiltration channel independent of the C2 host or the nonstandard port.

Reporting behind it

Related detections9 linkedT1071.001 — drag to rearrange

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Possible Spectre Ops C2 Beacon via nico and yfat Query Parameters via proxy

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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