General

  • Target

    071e4e2a34d0279e27814e95bb3378f2c95d54580068686221f0815c4e16726e

  • Size

    1.4MB

  • Sample

    230801-c81k8sdh6w

  • MD5

    7fdc9972d91f2d663e70dc9da205ec35

  • SHA1

    ae318093168dc598f819ef02b1a4c36c439ecadd

  • SHA256

    071e4e2a34d0279e27814e95bb3378f2c95d54580068686221f0815c4e16726e

  • SHA512

    acef1e1ab4950904e9b5353fc0e1fc8c37dfd2fa692d3b7e6a2ce9b9c11ef9ecc4caa50cd2deb90ec55ddc119e3eef2469c3bad6ecb9e4131e8dad325606ff79

  • 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

      071e4e2a34d0279e27814e95bb3378f2c95d54580068686221f0815c4e16726e

    • Size

      1.4MB

    • MD5

      7fdc9972d91f2d663e70dc9da205ec35

    • SHA1

      ae318093168dc598f819ef02b1a4c36c439ecadd

    • SHA256

      071e4e2a34d0279e27814e95bb3378f2c95d54580068686221f0815c4e16726e

    • SHA512

      acef1e1ab4950904e9b5353fc0e1fc8c37dfd2fa692d3b7e6a2ce9b9c11ef9ecc4caa50cd2deb90ec55ddc119e3eef2469c3bad6ecb9e4131e8dad325606ff79

    • 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