General

  • Target

    9cee9fa15e4c70e527b95a1c6d341bfd.exe

  • Size

    1.4MB

  • Sample

    230801-mz5hyafd26

  • MD5

    9cee9fa15e4c70e527b95a1c6d341bfd

  • SHA1

    64550e253cc39a63c9547b7d2173b429e605da66

  • SHA256

    51fd7ec86eb447de524db155117eb5a0422bbec61aabf2a887f0ba2d6f8065d1

  • SHA512

    236be0671095ec3dd3892863e15b1475848f42006abbf09b26881dff61754971a3979aea1ac3a70699042902e3f44ae0528ee67294017275234911de66b5f4d0

  • 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

      9cee9fa15e4c70e527b95a1c6d341bfd.exe

    • Size

      1.4MB

    • MD5

      9cee9fa15e4c70e527b95a1c6d341bfd

    • SHA1

      64550e253cc39a63c9547b7d2173b429e605da66

    • SHA256

      51fd7ec86eb447de524db155117eb5a0422bbec61aabf2a887f0ba2d6f8065d1

    • SHA512

      236be0671095ec3dd3892863e15b1475848f42006abbf09b26881dff61754971a3979aea1ac3a70699042902e3f44ae0528ee67294017275234911de66b5f4d0

    • 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