General

  • Target

    a5ed8bef83073e3236c0947b12e011b747ccfe151f5f3600c67d4df5ae217023

  • Size

    1.4MB

  • Sample

    230801-dl7xgaea7y

  • MD5

    3d44f672800a1e98905440f57535b843

  • SHA1

    1e77f550b6d0178dbc319b1a524cdb115667dfc8

  • SHA256

    a5ed8bef83073e3236c0947b12e011b747ccfe151f5f3600c67d4df5ae217023

  • SHA512

    cbc094be4096b638bc4979f5e2705cbf002f6b027587d2064824760d131836c812ee46ef69b6233633d70dcb7db41a009e42dc623f524262c7194d965184d272

  • 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

      a5ed8bef83073e3236c0947b12e011b747ccfe151f5f3600c67d4df5ae217023

    • Size

      1.4MB

    • MD5

      3d44f672800a1e98905440f57535b843

    • SHA1

      1e77f550b6d0178dbc319b1a524cdb115667dfc8

    • SHA256

      a5ed8bef83073e3236c0947b12e011b747ccfe151f5f3600c67d4df5ae217023

    • SHA512

      cbc094be4096b638bc4979f5e2705cbf002f6b027587d2064824760d131836c812ee46ef69b6233633d70dcb7db41a009e42dc623f524262c7194d965184d272

    • 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

    • 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