General

  • Target

    ad448c26383e2e9a9866ca8799a86188e22c0fc02e81ba33409d9371aa819ac4

  • Size

    1.4MB

  • Sample

    231014-mz6q1aeg52

  • MD5

    9e5e8e5a2c59c7669dcec8e7827dcb3e

  • SHA1

    0db8d97c0530ebe3bfcefe993e7df3b1ffa21cea

  • SHA256

    ad448c26383e2e9a9866ca8799a86188e22c0fc02e81ba33409d9371aa819ac4

  • SHA512

    93fa5f96860068ffbf66337a58063abeb2f0fe5da748be5bcbc97507450bca32aedb4661befdce1b5c5138d291ed9019cec7a0691816aeea7ba563e850db4325

  • 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

      ad448c26383e2e9a9866ca8799a86188e22c0fc02e81ba33409d9371aa819ac4

    • Size

      1.4MB

    • MD5

      9e5e8e5a2c59c7669dcec8e7827dcb3e

    • SHA1

      0db8d97c0530ebe3bfcefe993e7df3b1ffa21cea

    • SHA256

      ad448c26383e2e9a9866ca8799a86188e22c0fc02e81ba33409d9371aa819ac4

    • SHA512

      93fa5f96860068ffbf66337a58063abeb2f0fe5da748be5bcbc97507450bca32aedb4661befdce1b5c5138d291ed9019cec7a0691816aeea7ba563e850db4325

    • 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.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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