General

  • Target

    1de4d7d25d4c63da5bf5a990d7d40e7d.exe

  • Size

    1.4MB

  • Sample

    230801-mzjw8sfc97

  • MD5

    1de4d7d25d4c63da5bf5a990d7d40e7d

  • SHA1

    bd5d9bc7b8088dcbcc2cd8cdca156ce7d3cc7902

  • SHA256

    3561b1eab2b650f0a714dc2da14bb751e03008a444dcc7dc1293eca7056727a2

  • SHA512

    a4d7bb7461703173e60d003c03972183d2f4fc8b68a28cf2d156bc32274d12c52fb9bdc74b7e287b96c05ed52bee2f2efc5bc18645c574037eac468e0a6cf81b

  • 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

      1de4d7d25d4c63da5bf5a990d7d40e7d.exe

    • Size

      1.4MB

    • MD5

      1de4d7d25d4c63da5bf5a990d7d40e7d

    • SHA1

      bd5d9bc7b8088dcbcc2cd8cdca156ce7d3cc7902

    • SHA256

      3561b1eab2b650f0a714dc2da14bb751e03008a444dcc7dc1293eca7056727a2

    • SHA512

      a4d7bb7461703173e60d003c03972183d2f4fc8b68a28cf2d156bc32274d12c52fb9bdc74b7e287b96c05ed52bee2f2efc5bc18645c574037eac468e0a6cf81b

    • 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