General

  • Target

    16aef3b75ebd17a3f04a02621a0c4720d0c2643c9ff3603650a4841158a30caf

  • Size

    1.4MB

  • Sample

    230801-z2vgzacc71

  • MD5

    38ae0271a168ddefb386aaf0bdd6ac1b

  • SHA1

    e6c38ea633f2fe7f618f0a02ef8189e7082283ff

  • SHA256

    16aef3b75ebd17a3f04a02621a0c4720d0c2643c9ff3603650a4841158a30caf

  • SHA512

    a22a8ab985022dc6d9507a4ed4d67a6ce27b9878e7b86c4692e52d0a0aa61fe60bf3850783c7b8142f1e906566fb3710e1c887f61f39d6ddbf73a65cff47969d

  • 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

      16aef3b75ebd17a3f04a02621a0c4720d0c2643c9ff3603650a4841158a30caf

    • Size

      1.4MB

    • MD5

      38ae0271a168ddefb386aaf0bdd6ac1b

    • SHA1

      e6c38ea633f2fe7f618f0a02ef8189e7082283ff

    • SHA256

      16aef3b75ebd17a3f04a02621a0c4720d0c2643c9ff3603650a4841158a30caf

    • SHA512

      a22a8ab985022dc6d9507a4ed4d67a6ce27b9878e7b86c4692e52d0a0aa61fe60bf3850783c7b8142f1e906566fb3710e1c887f61f39d6ddbf73a65cff47969d

    • 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