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General

  • Target

    97ea1071bd6cee9cfeae027600f958429b1564dcd16584482bf66a8f21454ecd

  • Size

    1.4MB

  • Sample

    231012-jfhnaaed6y

  • MD5

    b841fb34d646b046ecf80b647efded35

  • SHA1

    f932c320eb44d95d5e6193c85c5dab62d21868fb

  • SHA256

    97ea1071bd6cee9cfeae027600f958429b1564dcd16584482bf66a8f21454ecd

  • SHA512

    b406b513a98ac83a78bdda6772db79e2d6aad57247a5bd74dc9a4691b0a460c7a7058276c8241a433e9f74d561d5ddc1b64191cc2fc61bef0df1ee55f2488f4d

  • 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

      97ea1071bd6cee9cfeae027600f958429b1564dcd16584482bf66a8f21454ecd

    • Size

      1.4MB

    • MD5

      b841fb34d646b046ecf80b647efded35

    • SHA1

      f932c320eb44d95d5e6193c85c5dab62d21868fb

    • SHA256

      97ea1071bd6cee9cfeae027600f958429b1564dcd16584482bf66a8f21454ecd

    • SHA512

      b406b513a98ac83a78bdda6772db79e2d6aad57247a5bd74dc9a4691b0a460c7a7058276c8241a433e9f74d561d5ddc1b64191cc2fc61bef0df1ee55f2488f4d

    • 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.

    • 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