General

  • Target
    RyzenCS2.exe
  • Size 249KB
  • Sample261014-laarlafd73
  • SHA256 9b8b88121424ebcb52b511000ecbe0f7f7c3f9e45a622cd563582d81806ada19
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      RyzenCS2.exe
    • Size 249KB
    • SHA256 9b8b88121424ebcb52b511000ecbe0f7f7c3f9e45a622cd563582d81806ada19
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes a file named after a Windows system binary

      The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v16

Tasks