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General

  • Target

    105e455731e490cb5fd0c456f265dc986842d3d69906ad6b94235d19255931af

  • Size

    1.4MB

  • Sample

    231012-cmfc6scb52

  • MD5

    19f46c41f3f272a9d8119a738c21d8c6

  • SHA1

    7cafe3ea1336554c7fd31cb64d0d278bc8428b8b

  • SHA256

    105e455731e490cb5fd0c456f265dc986842d3d69906ad6b94235d19255931af

  • SHA512

    7cd233e53213d0bb530b6e73ae023d751ee3cb957ac58764f93b31817bd06ff80a42ae86f96fbb5c11c71ee330f041c56325fe2121198b408fd3ddd42c09515a

  • 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

      105e455731e490cb5fd0c456f265dc986842d3d69906ad6b94235d19255931af

    • Size

      1.4MB

    • MD5

      19f46c41f3f272a9d8119a738c21d8c6

    • SHA1

      7cafe3ea1336554c7fd31cb64d0d278bc8428b8b

    • SHA256

      105e455731e490cb5fd0c456f265dc986842d3d69906ad6b94235d19255931af

    • SHA512

      7cd233e53213d0bb530b6e73ae023d751ee3cb957ac58764f93b31817bd06ff80a42ae86f96fbb5c11c71ee330f041c56325fe2121198b408fd3ddd42c09515a

    • 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.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks