Overview

overview

10

Static

static

10

d903521af9...70.exe

windows10-2004-x64

10

d903521af9...70.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    d903521af99fa7127422f049b7ead1d91934e8ee8a5f8b0377dac2c552314a70.bin
  • Size 92KB
  • Sample260826-fy28vsgn51
  • SHA256 d903521af99fa7127422f049b7ead1d91934e8ee8a5f8b0377dac2c552314a70
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
asyncratdefaultdefense_evasiondiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • nk88uk.com:8080

  • www.nk88uk.com:8080

  • c2.nk88uk.com:8080

Mutex

  • Bwoaf1KzLFqt

Attributes
  • delay

    3

  • install

    true

  • install_file

    backdoor.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://nk88uk.com/load.ps1

Targets

    • Target
      d903521af99fa7127422f049b7ead1d91934e8ee8a5f8b0377dac2c552314a70.bin
    • Size 92KB
    • SHA256 d903521af99fa7127422f049b7ead1d91934e8ee8a5f8b0377dac2c552314a70
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

    • Async RAT payload

      rat

    • Family: AsyncRat

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

      ratasyncrat

    • Badlisted process makes network request

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks