WARMCOOKIE One Year Later: New Features and Fresh Insights

Description

The WARMCOOKIE backdoor continues to evolve, with ongoing updates and new infections observed. Recent developments include new handlers for executing various file types, a string bank for defense evasion, and code optimizations. A campaign ID field has been added, providing context for operators. Infrastructure analysis reveals a default SSL certificate potentially used for WARMCOOKIE back-ends. Despite disruption attempts, the backdoor remains active in malvertising and spam campaigns. The malware's selective usage and continuous updates suggest its persistence as a threat, highlighting the need for enhanced organizational protection measures.