General

  • Target

    6d4255e1afb657234fbad823dcf2f28c8ef99dc5009487fcf2053dabd79e127f

  • Size

    1.4MB

  • Sample

    230801-zl81esbb92

  • MD5

    56a13a2378569afb4caa61ab4c89a031

  • SHA1

    7ab7653db6ad5261016040f9fa823d41efa4d3b5

  • SHA256

    6d4255e1afb657234fbad823dcf2f28c8ef99dc5009487fcf2053dabd79e127f

  • SHA512

    efcfc3ed539913707c0d7b00d07a0b76d37cf4a06beb32a7c977ca10d8a2d7c2f59cd638351cc269820ad2cd45162f51cf3a58122e032230d2a983810c86c5a4

  • 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

      6d4255e1afb657234fbad823dcf2f28c8ef99dc5009487fcf2053dabd79e127f

    • Size

      1.4MB

    • MD5

      56a13a2378569afb4caa61ab4c89a031

    • SHA1

      7ab7653db6ad5261016040f9fa823d41efa4d3b5

    • SHA256

      6d4255e1afb657234fbad823dcf2f28c8ef99dc5009487fcf2053dabd79e127f

    • SHA512

      efcfc3ed539913707c0d7b00d07a0b76d37cf4a06beb32a7c977ca10d8a2d7c2f59cd638351cc269820ad2cd45162f51cf3a58122e032230d2a983810c86c5a4

    • 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