Understanding AsyncRAT: Config Decryption Techniques and Salt Analysis
This article discusses AsyncRAT, a Remote Access Trojan (RAT) that has seen a 20% increase in activity during the last quarter. AsyncRAT is designed to remotely monitor and control other computers through a secure encrypted connection. It is an open-source remote administration tool that can be used maliciously, as it provides functionality such as keylogger, remote desktop control, and other functions. Delivery methods include spear-phishing, malvertising, exploit kits, and other techniques. The article explores various decryption methods for AsyncRAT configuration, including static extractors like CyberChef Recipe and Python script. It also discusses a dynamic approach using reflection in PowerShell. In the analysis of approximately 10-20 files, the author encountered only two distinct salts for AsyncRAT, which are detailed in the article. The techniques discussed are still effective on unpacked files with minor modifications. Malware: AsyncRAT, HotRat [View Article](https://www.securityinbits.com/malware-analysis/understanding-asyncrat-config-decryption-techniques-and-salt-analysis/)