Malicious Bash Reverse Shell via /dev/tcp

ATT&CK techniques

Execution

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

What it detects

This rule detects an interactive bash session redirecting its input and output to a /dev/tcp socket, matching the OVERSTEP dobackshell command that opens a reverse shell from a compromised SonicWall SMA appliance. This gives the operator hands-on-keyboard control to stage data theft and additional persistence.

Reporting behind it

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Malicious Bash Reverse Shell via /dev/tcp

Pivot detection · T1059.004 · 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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