General

  • Target
    boykisser.exe
  • Size 3.0MB
  • Sample260701-e2mf5sgs7x
  • SHA256 b4f66394b20e42b4dcf255aa8c820a9aa0b932cb923caf9346b971f340f9df63
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      boykisser.exe
    • Size 3.0MB
    • SHA256 b4f66394b20e42b4dcf255aa8c820a9aa0b932cb923caf9346b971f340f9df63
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Disables Task Manager via registry modification

    • 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

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • 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.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Writes to the Master Boot Record (MBR)

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

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

MITRE ATT&CK Enterprise v16

Tasks