Suspicious PowerShell Invoke-WebRequest Download of Executable Payload

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects PowerShell using Invoke-WebRequest to download an executable payload to disk. UAT-6382 used this technique after web-shell access to pull additional tooling from staging infrastructure over a non-standard port, a common ingress-tool-transfer step preceding beacon deployment.

Reporting behind it

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Suspicious File Download via PowerShell WebClient DownloadFile

Suspicious PowerShell Invoke-WebRequest Download of Executable Payload

Pivot detection · T1059.001 · 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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