Suspicious PowerShell Download of Payload From Pastebin (via process_creation)

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 invoked with a command line referencing pastebin.com, the delivery channel described in Deep Instinct's Regex Gone Rogue analysis where an Excel macro fetches a batch payload from Pastebin. Attackers stage second-stage scripts on paste sites to evade domain reputation controls. This indicates remote payload retrieval during the execution stage.

Reporting behind it

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Suspicious PowerShell Download of Payload From Pastebin (via process_creation)

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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