Suspicious Remote Script Download Piped to Shell via Wget or Curl on Linux

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 wget or curl output piped directly into a shell interpreter on Linux, the initial execution used to deliver a coinminer after exploiting a vulnerable Tomcat server. Piping a downloaded script straight into sh runs attacker code in memory without ever writing an inspectable file to disk.

Reporting behind it

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Suspicious Remote Script Download Piped to Shell via Wget or Curl on Linux

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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