Malicious EtherRAT Base64 Decoded Payload Piped To Bash via Shell (via process_creation)

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 a base64 encoded payload being decoded and piped directly into a bash interpreter on Linux hosts. This behavior matches the EtherRAT dropper used by DPRK operators in React2Shell attacks to stage a Node.js implant. Decoding inline to a shell lets the attacker execute code without writing a script to disk which is why this pattern warrants investigation.

Reporting behind it

Related detections9 linkedT1059.004 — drag to rearrange

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Suspicious Base64 Decoded Shell Dropper via Command Line

Malicious EtherRAT Base64 Decoded Payload Piped To Bash via Shell (via process_creation)

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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