General

  • Target

    faeb068c20cbe9e1778e2d6edebad8d5a97cf081b52f1e625066fdab6eb8c154

  • Size

    1.4MB

  • Sample

    231012-a4jqtadh81

  • MD5

    5028526669cbe4d826de03f118a3ac88

  • SHA1

    a7e818e543af24fdbe7c4ce0b864c91e7a456bb1

  • SHA256

    faeb068c20cbe9e1778e2d6edebad8d5a97cf081b52f1e625066fdab6eb8c154

  • SHA512

    c29fd9e374be03aedfdd8c1ebe00748b50d587114e0c14a82fe83e574e640afe3b92d9f13aa9508a33947b59afe3642102aa787a0f8dc6d0272ec5927b360c92

  • 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

      faeb068c20cbe9e1778e2d6edebad8d5a97cf081b52f1e625066fdab6eb8c154

    • Size

      1.4MB

    • MD5

      5028526669cbe4d826de03f118a3ac88

    • SHA1

      a7e818e543af24fdbe7c4ce0b864c91e7a456bb1

    • SHA256

      faeb068c20cbe9e1778e2d6edebad8d5a97cf081b52f1e625066fdab6eb8c154

    • SHA512

      c29fd9e374be03aedfdd8c1ebe00748b50d587114e0c14a82fe83e574e640afe3b92d9f13aa9508a33947b59afe3642102aa787a0f8dc6d0272ec5927b360c92

    • 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