General

  • Target
    13d1b5bcc807f84aa8ebd6f69a1013ac.exe
  • Size 11.6MB
  • Sample260907-xkyrystdke
  • SHA256 acb54edce764ff6ee46bf23fcd7b0eb7347373bb9f9009f32e9da1cddb6b4621
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • fuck2

Mutex
  • 9a7975b7-df6b-461a-82fc-4bd458e7aaf2

Attributes
  • encryption_key

    723A2B2A6F2EF73A3A133F7A10A174FDB6C54877

  • install_name

    oasis.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Microsoft_Logs

  • reconnect_delay

    300

  • startup_key

    Quasar Client Startup

  • subdirectory

    adobemirage

Targets

    • Target
      13d1b5bcc807f84aa8ebd6f69a1013ac.exe
    • Size 11.6MB
    • SHA256 acb54edce764ff6ee46bf23fcd7b0eb7347373bb9f9009f32e9da1cddb6b4621
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • 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 dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Checks installed software on the system

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v16

Tasks