Suspicious PS1Bot PowerShell Payload Written to ProgramData (via file_event)

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
Persistence
Priv Esc
Defense Evasion
- T1027Obfuscated Files or Information
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the PS1Bot malware framework writing its PowerShell payload ntu.ps1 into the ProgramData directory. PS1Bot is delivered through malvertising and stages obfuscated PowerShell modules from this location for in-memory execution. Script files created in ProgramData outside of installer activity are a strong indicator of staging.

Reporting behind it

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Suspicious PS1Bot PowerShell Payload Written to ProgramData (via file_event)

Pivot detection · T1027 · 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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