General

  • Target

    1914c381e30270cad33be214d3a16fd25549807cc799ffc68a62d105a5c112f9

  • Size

    1.4MB

  • Sample

    230801-c1a1lscf82

  • MD5

    9ffb8fc453f49f3dc66a2e4b51b85f9f

  • SHA1

    122c9b6658807fefed84977ded7b1a23b7e2049d

  • SHA256

    1914c381e30270cad33be214d3a16fd25549807cc799ffc68a62d105a5c112f9

  • SHA512

    9fa0b317438ae2ad9ef812e143e1939c161862ddc3c5dfda60b2a0447e7a716924eaf50222a78fd482afd9ca79afabda9d67f58dd0bac393c214794a4b8337a2

  • 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

      1914c381e30270cad33be214d3a16fd25549807cc799ffc68a62d105a5c112f9

    • Size

      1.4MB

    • MD5

      9ffb8fc453f49f3dc66a2e4b51b85f9f

    • SHA1

      122c9b6658807fefed84977ded7b1a23b7e2049d

    • SHA256

      1914c381e30270cad33be214d3a16fd25549807cc799ffc68a62d105a5c112f9

    • SHA512

      9fa0b317438ae2ad9ef812e143e1939c161862ddc3c5dfda60b2a0447e7a716924eaf50222a78fd482afd9ca79afabda9d67f58dd0bac393c214794a4b8337a2

    • 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.

    • 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