Suspicious File Created in Startup Folder by WinRAR via CVE-2025-8088

ATT&CK techniques

Initial Access → Priv Esc

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
- T1547.001Registry Run Keys / Startup Folder
Priv Esc
- T1547.001Registry Run Keys / Startup Folder
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects WinRAR or its extraction binaries writing a file into a user Startup folder which indicates exploitation of the CVE-2025-8088 alternate data stream path traversal flaw. Attackers drop LNK HTA or BAT payloads into Startup to gain logon persistence when a user opens a crafted archive.

Reporting behind it

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Suspicious File Created in Startup Folder by WinRAR via CVE-2025-8088

Pivot detection · T1190 · 9 related

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