General

  • Target

    01927c119581040f021cdaaf95ab9a93e6432572e442ffb9b9d7ac23e967737b

  • Size

    1.4MB

  • Sample

    230802-ayv7naca22

  • MD5

    6c05135dd0a83cc2d3128a7a12d1054d

  • SHA1

    e9a045da872a8dd758d582a7c7f82c40c84b03cd

  • SHA256

    01927c119581040f021cdaaf95ab9a93e6432572e442ffb9b9d7ac23e967737b

  • SHA512

    53a319fc59ca34deedc8983d842ed27bbac02351916ea2fbaadd2c95d6adb9f6e483feb5cda7ca913ff6c59676fea8c208af3d61c56c5f5f07d83334ef42015e

  • 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

      01927c119581040f021cdaaf95ab9a93e6432572e442ffb9b9d7ac23e967737b

    • Size

      1.4MB

    • MD5

      6c05135dd0a83cc2d3128a7a12d1054d

    • SHA1

      e9a045da872a8dd758d582a7c7f82c40c84b03cd

    • SHA256

      01927c119581040f021cdaaf95ab9a93e6432572e442ffb9b9d7ac23e967737b

    • SHA512

      53a319fc59ca34deedc8983d842ed27bbac02351916ea2fbaadd2c95d6adb9f6e483feb5cda7ca913ff6c59676fea8c208af3d61c56c5f5f07d83334ef42015e

    • 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.

    • 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.

    • 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