General

  • Target

    f2f1e808e8a0313e92728a71031994c5339d07a8542161691350e8b90f065167

  • Size

    1.4MB

  • Sample

    230801-bwc4qsde2v

  • MD5

    bc8c83a2ff96a60308b0ee03e1b54922

  • SHA1

    9bc65fd99ce91c8908b61f8179a05edfda6bd957

  • SHA256

    f2f1e808e8a0313e92728a71031994c5339d07a8542161691350e8b90f065167

  • SHA512

    7959233f8f92ea9f1365d7f021a558118620fb85cc4cb98b0535915a4f874f7c08e72cd0473dcd493f4f81457bd9a314118c6ff22b6097eb4ed353093a6c8091

  • 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

      f2f1e808e8a0313e92728a71031994c5339d07a8542161691350e8b90f065167

    • Size

      1.4MB

    • MD5

      bc8c83a2ff96a60308b0ee03e1b54922

    • SHA1

      9bc65fd99ce91c8908b61f8179a05edfda6bd957

    • SHA256

      f2f1e808e8a0313e92728a71031994c5339d07a8542161691350e8b90f065167

    • SHA512

      7959233f8f92ea9f1365d7f021a558118620fb85cc4cb98b0535915a4f874f7c08e72cd0473dcd493f4f81457bd9a314118c6ff22b6097eb4ed353093a6c8091

    • 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.

    • 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