General

  • Target

    9ded64087b76f48dfa80c95ceffbf11ec7e442bdaed4cebdef40a3ed2593f86b

  • Size

    1.4MB

  • Sample

    231014-dqsncafc23

  • MD5

    3f67be83722c1b395fc4bcec2dd81866

  • SHA1

    d67e4a209f94b6a051d96a12d609f32e453416c4

  • SHA256

    9ded64087b76f48dfa80c95ceffbf11ec7e442bdaed4cebdef40a3ed2593f86b

  • SHA512

    7517fe15e10e67a21b59869443b2154c39d334c63f3750ca20daa05d815d31c231143a16caf30923a205e858ffde195bea44164e4feb8aa01c5e837d8a8621a8

  • 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

      9ded64087b76f48dfa80c95ceffbf11ec7e442bdaed4cebdef40a3ed2593f86b

    • Size

      1.4MB

    • MD5

      3f67be83722c1b395fc4bcec2dd81866

    • SHA1

      d67e4a209f94b6a051d96a12d609f32e453416c4

    • SHA256

      9ded64087b76f48dfa80c95ceffbf11ec7e442bdaed4cebdef40a3ed2593f86b

    • SHA512

      7517fe15e10e67a21b59869443b2154c39d334c63f3750ca20daa05d815d31c231143a16caf30923a205e858ffde195bea44164e4feb8aa01c5e837d8a8621a8

    • 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

MITRE ATT&CK Enterprise v15

Tasks