Suspicious Reverse Shell via Dev TCP or Netcat

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1059.004Unix Shell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.001Web Protocols
Exfiltration
Impact

What it detects

This rule detects Linux reverse-shell construction using bash /dev/tcp redirection or netcat with command execution, techniques used to obtain remote access after ActiveMQ CVE-2023-46604 exploitation. Attackers open these outbound shells to control the compromised broker interactively. These reverse-shell patterns are hallmark hands-on-keyboard command-and-control indicators.

Reporting behind it

Related detections9 linkedT1071.001 — drag to rearrange

Malicious Bash Dev-TCP Reverse Shell via Shell (via process_creation)

Malicious Named Pipe Netcat Reverse Shell via Shell (via process_creation)

Suspicious Base64 Decoded Payload Piped to Shell

Suspicious Shell Spawned by ActiveMQ Java Process

Malicious HarborWatch RAT Command and Control Beacon by User Agent (via proxy)

Suspicious UAT-10608 Credential Harvesting C2 Beacon via HTTP

Malicious BadIIS C2 Communication via lwxatisme User-Agent

Possible PS1Bot C2 Beacon With Drive Serial URI Pattern (via proxy)

Suspicious WarmCookie C2 Beacon With Fixed Firefox User-Agent

Suspicious Reverse Shell via Dev TCP or Netcat

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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