General

  • Target

    ca6c3aeb992a55c8b36f26f6764af15b1065236167ee196e1d024969b0eca899

  • Size

    1.4MB

  • Sample

    230801-ds4hmach75

  • MD5

    7e01132b34ad1941d9b78b6435fb5348

  • SHA1

    39984f3b11e48bcc47bd963df3ee5e02ac567db8

  • SHA256

    ca6c3aeb992a55c8b36f26f6764af15b1065236167ee196e1d024969b0eca899

  • SHA512

    76e01e4cdb957c764755d1c932cd179adb9baa77ab4a1fa3aa62b34852b99bdf042f65e8b896a4be74cb3a094afad68a7ac5a33d4a7520038eb0cd7dab5f2270

  • 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

      ca6c3aeb992a55c8b36f26f6764af15b1065236167ee196e1d024969b0eca899

    • Size

      1.4MB

    • MD5

      7e01132b34ad1941d9b78b6435fb5348

    • SHA1

      39984f3b11e48bcc47bd963df3ee5e02ac567db8

    • SHA256

      ca6c3aeb992a55c8b36f26f6764af15b1065236167ee196e1d024969b0eca899

    • SHA512

      76e01e4cdb957c764755d1c932cd179adb9baa77ab4a1fa3aa62b34852b99bdf042f65e8b896a4be74cb3a094afad68a7ac5a33d4a7520038eb0cd7dab5f2270

    • 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