Malicious Global Socket gs-netcat Reverse Shell over DNS Port (via process_creation)

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.001Web Protocols
- T1571Non-Standard Port
Exfiltration
Impact

What it detects

This rule detects execution using the Global Socket relay with GS_PORT set to 53 and interactive listener arguments loading npm-cli.dat, the covert channel established by actors exploiting React2Shell on Linux. Tunneling a reverse shell over the DNS port through the Global Socket relay is used to bypass egress filtering and hide C2 traffic.

Reporting behind it

Related detections9 linkedT1071.001 — drag to rearrange

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Malicious Global Socket gs-netcat Reverse Shell over DNS Port (via process_creation)

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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