Suspicious Screensaver File Executed as Installer via process_creation

ATT&CK techniques

Initial Access → Defense Evasion

Recon
Resource Dev
Initial Access
- T1566.002Spearphishing Link
Execution
Persistence
Priv Esc
Defense Evasion
- T1218.007Msiexec
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a .scr screensaver file being executed directly as a program. In the rogue RMM campaign, invite and SSA themed lures were delivered as SCR installers to trick users into running the initial dropper, so execution of an .scr file outside of screensaver preview contexts indicates a masqueraded installer launching malicious payloads.

Reporting behind it

Related detections9 linkedT1218.007 — drag to rearrange

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Suspicious Screensaver File Executed as Installer via process_creation

Pivot detection · T1218.007 · 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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