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A Deep Dive into Malware Static Analysis: Dissecting Windows Reverse Shell for Threat Insights
- John, the junior security analyst, conducted static analysis on a reverse shell malware to gather insights on the threat.
- In static analysis, the file type of the malware was determined to be a 64-bit Windows PE file using tools like 'file' command on Kali Linux and hexdump.
- Hashes (MD5, SHA1, SHA256) were generated for the malware to identify replicas and search for results online.
- By analyzing the strings in the binary, John found clues that the malware communicated over the internet using cmd.exe.
- Comments in the code and the type of strings present provided insights into the functionality and possible development environment of the malware.
- Detection of a packed file, indicated by decreased file size and lack of readable strings, led to the discussion on packers, cryptors, and tools like ExeInfo for unpacking.
- Further analysis involved examining PE Headers, DOS Header, File Header, Optional Header, sections, and imports to gather more information on the malware.
- The compilation date, application type, and imported functions provided additional details on the malware's behavior.
- Overall, John's thorough analysis provided a deeper understanding of the malware's structure and functionalities despite attempts to obfuscate it.
- The article emphasizes the importance of static analysis in dissecting malware to unveil its potential threats and capabilities.
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