WinRaR Remote Code Execution
ID: 67d684f1-56da-5cf4-a3d8-4f1e10b2062d
STIX ID: report--67d684f1-56da-5cf4-a3d8-4f1e10b2062d
Feed Name: ThreatLocker Blog
Threat Score
A high-severity WinRAR RCE (CVE-2023-38831) affecting versions before 6.23 was actively exploited between April and August 2023; attackers can trigger arbitrary code execution when a user interacts with a crafted archive, enabling C2 connections, NTLMv2 hash capture and cracking, and subsequent ransomware or credential-based intrusions. The report documents a demonstration timeline and recommends prevention controls such as explicit execution blocking and application ringfencing.
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