General

  • Target

    6877c08223da1c6e8f0b30896b14fda0600853fe7e8dd82ef42a1245bd4b5444

  • Size

    1.4MB

  • Sample

    230812-bq5lsshf26

  • MD5

    3ad9c4eeee4c17e75b3f0d51779fea52

  • SHA1

    ae519276743ba4bc9e57bf621bc25fadc7f35e38

  • SHA256

    6877c08223da1c6e8f0b30896b14fda0600853fe7e8dd82ef42a1245bd4b5444

  • SHA512

    4999fb59c774541d710a55a74fbf2dd1b53dae79cee1c837ddd933c124b9734eafa880721c80a712c8de0b1c5ef4c5f9bdb1e0031b8e33d538423d4ad9eaccda

  • 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

      6877c08223da1c6e8f0b30896b14fda0600853fe7e8dd82ef42a1245bd4b5444

    • Size

      1.4MB

    • MD5

      3ad9c4eeee4c17e75b3f0d51779fea52

    • SHA1

      ae519276743ba4bc9e57bf621bc25fadc7f35e38

    • SHA256

      6877c08223da1c6e8f0b30896b14fda0600853fe7e8dd82ef42a1245bd4b5444

    • SHA512

      4999fb59c774541d710a55a74fbf2dd1b53dae79cee1c837ddd933c124b9734eafa880721c80a712c8de0b1c5ef4c5f9bdb1e0031b8e33d538423d4ad9eaccda

    • 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

    • 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