Overview

overview

10

Static

static

e3c292ebdf...d1.exe

windows7-x64

10

e3c292ebdf...d1.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8911284780.zip

  • Size

    2.6MB

  • Sample

    230130-kfpl9shg42

  • MD5

    082dd127f07976e439e5301773108883

  • SHA1

    72aa15b54a7970323648e7d373067d10e5957d81

  • SHA256

    25292e7c037952bac53038432d60eb4799bcf3b507e88fa1073de7000177bcbd

  • SHA512

    31ccfc5349046b4100da42a3083fc47aa3a81f76aed27c2dedca53c7cfafa8eb84ea14d29ebf1419aff0c3f960304fde5422a10e395c7926fc5aab8de8fc9ada

  • SSDEEP

    49152:Co5ngO60hTI/9+/Ned6NDEsUgs3pIJEIJrKoz46gNJKY6PdBBqLK:CodEN9+Ed6NDEsapIJvJdLY6zBaK

Score
10/10
purecrypterquasarsuccessdownloaderloaderpersistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

SUCCESS

C2

41.185.97.216:4782

Mutex

MUTEX_QAxMFzrXWG2cbIHPGK

Attributes
  • encryption_key

    JRUJdiIOmPJ5LlsFaVs9

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    cmd

  • subdirectory

    SubDir

Targets

    • Target

      e3c292ebdfb1ae04e44bcaa6c41c8ad4c6a1c859175df7b64a7bd9fbf01b6fd1

    • Size

      2.7MB

    • MD5

      d587b4883793de72536108a8cb6373ef

    • SHA1

      716e123537c7df451eff37da69a7747f8f99e3c1

    • SHA256

      e3c292ebdfb1ae04e44bcaa6c41c8ad4c6a1c859175df7b64a7bd9fbf01b6fd1

    • SHA512

      4cab1b454d56ced352905425ca0b9bfc3b532dd0a2cb242f02e099eef11892a44c4f89b8e4930f6ac8b31def7c5ddae419df0369de26911ba51be09e46912687

    • SSDEEP

      49152:Hur58NWGHSN7CNMU7Ptj1oUEQMubc88zCTKRxVjjR8IqSe0HJbYF:Oi1OiMGtqUEQ/g8XGvFj5qSe0HJ

    Score
    10/10
    purecrypterquasarsuccessdownloaderloaderpersistencespywaretrojan

    • Detect PureCrypter injector

      loader

    • Modifies WinLogon for persistence

      persistence

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

      loaderdownloaderpurecrypter

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks