General

  • Target
    [email protected]
  • Size 124KB
  • Sample261011-s9b72acf52
  • SHA256 dac7fac1d7d9acc529762965361ec433e0c6543e9d86a2bf0d7ffe8695ac7c75
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

Mutex
  • Cn0NzDR7O8de

Attributes
  • delay

    3

  • install

    true

  • install_file

    Top1Server.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://8ss8.net/malware/load.ps1

Targets

    • Target
      [email protected]
    • Size 124KB
    • SHA256 dac7fac1d7d9acc529762965361ec433e0c6543e9d86a2bf0d7ffe8695ac7c75
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Async RAT payload

    • Family: AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Modifies WinLogon for persistence

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Event Triggered Execution: Image File Execution Options Injection

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Registers new Windows logon scripts automatically executed at logon.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

MITRE ATT&CK Enterprise v16

Tasks