General

  • Target

    ba1a3eca6478d3dd2a29595b6d5463801c2211dad885f2445fee19cb9ae1cbb1

  • Size

    1.4MB

  • Sample

    231012-htbw8afb32

  • MD5

    ad30a8a281efd3376af8075187c7cb2e

  • SHA1

    b26136fbbc8070fc8574d3bef2bf162086e0c3b5

  • SHA256

    ba1a3eca6478d3dd2a29595b6d5463801c2211dad885f2445fee19cb9ae1cbb1

  • SHA512

    72d74edec60b66d19eb4cb56003193f0ddf89e7cd198e5595d851186e8dcdc0ccdf45f8f9648e5ad1b8b0c8ea820a631a86c799536068dae26f7e6f5beeef7e7

  • SSDEEP

    24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

-

C2

94.131.105.161:12344

Mutex

QSR_MUTEX_UEgITWnMKnRP3EZFzK

Attributes
  • encryption_key

    5Q0JQBQQfAUHRJTcAIOF

  • install_name

    lient.exe

  • log_directory

    Lugs

  • reconnect_delay

    3000

  • startup_key

    itartup

  • subdirectory

    SubDir

Targets

    • Target

      ba1a3eca6478d3dd2a29595b6d5463801c2211dad885f2445fee19cb9ae1cbb1

    • Size

      1.4MB

    • MD5

      ad30a8a281efd3376af8075187c7cb2e

    • SHA1

      b26136fbbc8070fc8574d3bef2bf162086e0c3b5

    • SHA256

      ba1a3eca6478d3dd2a29595b6d5463801c2211dad885f2445fee19cb9ae1cbb1

    • SHA512

      72d74edec60b66d19eb4cb56003193f0ddf89e7cd198e5595d851186e8dcdc0ccdf45f8f9648e5ad1b8b0c8ea820a631a86c799536068dae26f7e6f5beeef7e7

    • SSDEEP

      24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Modifies Windows Firewall

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • 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 v15

Tasks