General

  • Target

    fb5784de1a251633e8006e3fc03bcb6f.exe

  • Size

    1.4MB

  • Sample

    230813-jsdj4ahg57

  • MD5

    fb5784de1a251633e8006e3fc03bcb6f

  • SHA1

    0a86ae4b1542726a9a2f9d24102003141150b358

  • SHA256

    8169cd35ac84069d5e1e101dc22a6e9cb2fcaffa0c357972ad5fbbd5c3d7c8e0

  • SHA512

    c3021585da947b06e0cf65a35d752536cae8179e1ba4ef473ef7e793346f8449a8aaf01e2ac6fe37a5f241f4239f61603d7284e016c2c31e353d7ac13d3c0fb2

  • 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

      fb5784de1a251633e8006e3fc03bcb6f.exe

    • Size

      1.4MB

    • MD5

      fb5784de1a251633e8006e3fc03bcb6f

    • SHA1

      0a86ae4b1542726a9a2f9d24102003141150b358

    • SHA256

      8169cd35ac84069d5e1e101dc22a6e9cb2fcaffa0c357972ad5fbbd5c3d7c8e0

    • SHA512

      c3021585da947b06e0cf65a35d752536cae8179e1ba4ef473ef7e793346f8449a8aaf01e2ac6fe37a5f241f4239f61603d7284e016c2c31e353d7ac13d3c0fb2

    • 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.

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks