General

  • Target

    1a5afece6767acafd36f81957b09315e1d602275adeebc96271117fe9a816b24

  • Size

    1.4MB

  • Sample

    230801-z623lscd2v

  • MD5

    bbaba20f017547877105ebe4ccc5188a

  • SHA1

    f96e948fc0289df10caf3d33b719b511010b7a1c

  • SHA256

    1a5afece6767acafd36f81957b09315e1d602275adeebc96271117fe9a816b24

  • SHA512

    1444d5e4fe669c24c0d64d84a57179be86850174029ad6d67323c0858f8879d39789559f113563423beb259b8da9bbb03e21d508e283cc613df446be2c530bfc

  • 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

      1a5afece6767acafd36f81957b09315e1d602275adeebc96271117fe9a816b24

    • Size

      1.4MB

    • MD5

      bbaba20f017547877105ebe4ccc5188a

    • SHA1

      f96e948fc0289df10caf3d33b719b511010b7a1c

    • SHA256

      1a5afece6767acafd36f81957b09315e1d602275adeebc96271117fe9a816b24

    • SHA512

      1444d5e4fe669c24c0d64d84a57179be86850174029ad6d67323c0858f8879d39789559f113563423beb259b8da9bbb03e21d508e283cc613df446be2c530bfc

    • SSDEEP

      24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

    • Modifies WinLogon for persistence

    • 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