Overview

overview

10

Static

static

1

updhfjsbfs.bat

windows10-2004-x64

10

updhfjsbfs.bat

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    updhfjsbfs.bat
  • Size 3KB
  • Sample260730-hcmmdswsat
  • SHA256 44bed371f56abd518f34edcf6e12d198964b53d169ba12ee637821335158aa95
  • MD5 SHA1 SHA512 TLSH
Score
10/10
asyncratdefaultadwaredefense_evasiondiscoverydropperexecutionratspywaresuricata

Malware Config

Extracted

Family

  • asyncrat

Botnet

  • Default

C2

  • hsab20.duckdns.org:7878

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

  • asyncrat

Version

  • 0.5.7B

Botnet

  • Default

C2

  • yeja56.duckdns.org:6745

Mutex

  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      updhfjsbfs.bat
    • Size 3KB
    • SHA256 44bed371f56abd518f34edcf6e12d198964b53d169ba12ee637821335158aa95
    • MD5 SHA1 SHA512 TLSH
    Score
    10/10
    adwaredefaultdefense_evasiondiscoverydropperexecutionasyncratratspywaresuricata

    • Async RAT payload

      rat

    • Family: AsyncRat

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

      ratasyncrat

    • Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound

      Network activity triggered a Suricata alert

      suricataasyncrat

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Download via BitsAdmin

      dropper

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks