General

  • Target
    ByteBreaker V1_83236836.exe
  • Size 756KB
  • Sample261104-2qfwjsdz2w
  • SHA256 bd1f1619f850be8c84ae0acdd0bb7ff3d88b8cb5647877c078d7805d7a55582f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      ByteBreaker V1_83236836.exe
    • Size 756KB
    • SHA256 bd1f1619f850be8c84ae0acdd0bb7ff3d88b8cb5647877c078d7805d7a55582f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Writes a Windows system DLL name to a user directory

      A module named after a system DLL outside System32 can be loaded instead of the real one by a program searching that directory.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Network Share Discovery

      Attempt to gather information on host network.

    • Password Policy Discovery

      Attempt to access detailed information about the password policy used within an enterprise network.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks