HamsaUpdate Linux Payload Download via Wget Piped to Bash (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 the Operation HamsaUpdate Linux stage retrieving update.sh with wget and piping it directly into bash for immediate execution. Downloading a remote script and executing it inline without touching disk is the delivery behavior used to run the multi-layer wiper loader on Linux hosts.

Reporting behind it

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HamsaUpdate Linux Payload Download via Wget Piped to Bash (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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