Suspicious Process Execution from WinRAR Temporary Extraction Directory

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects executables and batch scripts launching from the WinRAR temporary extraction path Temp\Rar$. The CVE-2023-38831 zero-day tricks users into running a spoofed-extension file that WinRAR extracts and executes from this directory. Such execution indicates archive-based exploitation and user-driven initial access.

Reporting behind it

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Suspicious Process Execution from WinRAR Temporary Extraction Directory

Pivot detection · T1204.002 · 9 related

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