Saved login credentials and cookies from Chrome and Firefox. Email client data (Outlook, Thunderbird). FTP credentials and clipboard history.
The file is associated with a specific, notable malware analysis or CTF (Capture The Flag) challenge write-up involving a Trojan or Infostealer .
: The malware starts as a heavily obfuscated .NET executable inside the RAR. It uses a custom packer to decrypt its payload into memory to avoid signature-based detection.
: Once active, it targets specific browser data, including:
: It sends the stolen data back to a Command and Control (C2) server, often using SMTP (email) or a simple HTTP POST request to a compromised website. Resources for Verification
The term "55248.rar" often surfaces in security research circles as a reference to a specific sample of the or Formbook families. These rar archives are typically used in phishing campaigns, where they contain an executable disguised as a document or invoice. Summary of the Write-Up