General

  • Target

    9e76d3a3e6057efe8e3bbd5d2553b6f3f4c764cfddf4f517f7f207cae49e2a13

  • Size

    1.4MB

  • Sample

    230801-dvzmfsch85

  • MD5

    c7a38e1ce3cf41027cf091da5050f610

  • SHA1

    393eb8b47df14263bc50b138fafd1bf5c0ee2977

  • SHA256

    9e76d3a3e6057efe8e3bbd5d2553b6f3f4c764cfddf4f517f7f207cae49e2a13

  • SHA512

    740b90948e8a4d6b8ca5f8beb7d34118a9a060a4ecedc6ae5d485a52a50758f99f038def8ff6a4eaddb8f2b44c9b9af718f2246516946efa405c7aa864a34391

  • 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

      9e76d3a3e6057efe8e3bbd5d2553b6f3f4c764cfddf4f517f7f207cae49e2a13

    • Size

      1.4MB

    • MD5

      c7a38e1ce3cf41027cf091da5050f610

    • SHA1

      393eb8b47df14263bc50b138fafd1bf5c0ee2977

    • SHA256

      9e76d3a3e6057efe8e3bbd5d2553b6f3f4c764cfddf4f517f7f207cae49e2a13

    • SHA512

      740b90948e8a4d6b8ca5f8beb7d34118a9a060a4ecedc6ae5d485a52a50758f99f038def8ff6a4eaddb8f2b44c9b9af718f2246516946efa405c7aa864a34391

    • 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