General

  • Target

    0177e04a8ed50cfc0fec1356dea059959341d370da854b0b08436a9954892019

  • Size

    1.4MB

  • Sample

    230801-cl7q2ace92

  • MD5

    5f45161e3f906ee037bb01a3ffa1e396

  • SHA1

    d4406c0b1080b546e7638c63a97474b6814f4fe1

  • SHA256

    0177e04a8ed50cfc0fec1356dea059959341d370da854b0b08436a9954892019

  • SHA512

    d239016a186ea78fb8fe667f3e019976f6efaa84c1c4d465f4e0b71af72c340ccd2a730948cb466fb9a3a821cca7a58ccc2feff38d7a994eb84132c5392d3efb

  • 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

      0177e04a8ed50cfc0fec1356dea059959341d370da854b0b08436a9954892019

    • Size

      1.4MB

    • MD5

      5f45161e3f906ee037bb01a3ffa1e396

    • SHA1

      d4406c0b1080b546e7638c63a97474b6814f4fe1

    • SHA256

      0177e04a8ed50cfc0fec1356dea059959341d370da854b0b08436a9954892019

    • SHA512

      d239016a186ea78fb8fe667f3e019976f6efaa84c1c4d465f4e0b71af72c340ccd2a730948cb466fb9a3a821cca7a58ccc2feff38d7a994eb84132c5392d3efb

    • 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