Suspicious PrivateLoader NSIS Installer Dropped to Disk (via file_event)

ATT&CK techniques

C2

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

What it detects

This rule detects creation of the NSIS installer named setup_x86_x64_install.exe on disk. PrivateLoader is distributed through this specific NSIS bundle delivered by pay-per-install and cracked-software lures before it stages further payloads. The distinctive installer filename is a recurring PrivateLoader delivery artifact.

Reporting behind it

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Suspicious PrivateLoader NSIS Installer Dropped to Disk (via file_event)

Pivot detection · T1105 · 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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