Malicious Linux Payload Download and Execution Chain via Wget and Chmod (via process_creation)

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
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects a shell command chain that fetches a binary with wget into tmp, grants it full execute permissions with chmod 777, and prepares it to run, the classic exploitation payload staging seen in the botnet scanning campaigns abusing Zyxel and Ivanti flaws. This download and execute sequence over a single command line reflects automated post exploitation rather than legitimate package management.

Reporting behind it

Related detections9 linkedT1059.004 — drag to rearrange

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Malicious Linux Payload Download and Execution Chain via Wget and Chmod (via process_creation)

Pivot detection · T1059.004 · 9 related

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