General

  • Target
    2026-08-15_f67590dcd25e926e4e8f84da2950d5c8_cryptbot_icedid_luca-stealer_njrat_stealc
  • Size 26.5MB
  • Sample260815-vx83caem2w
  • SHA256 af0c5eebfe2dcffc7039c1bae13277a2a93693180cfa714dd0ec4ed75f9172fb
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • WORK

C2
  • 31.220.89.57:19999

Mutex
  • QSR_MUTEX_CTqPyFQvGnWcNbG1fM

Attributes
  • encryption_key

    rygaJCKyghXzysqn4nXc

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    APP

Targets

    • Target
      2026-08-15_f67590dcd25e926e4e8f84da2950d5c8_cryptbot_icedid_luca-stealer_njrat_stealc
    • Size 26.5MB
    • SHA256 af0c5eebfe2dcffc7039c1bae13277a2a93693180cfa714dd0ec4ed75f9172fb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • 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

    • Enumerates connected drives

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

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks