Overview

overview

10

Static

static

10

ClientX.exe

windows7-x64

10

ClientX.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2024, 02:52

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General

  • Target
    ClientX.exe
  • Size 73KB
  • Sample240503-dc4tfsdc5z
  • SHA256 97286457d8ab5c3d58a7ca6b81dbf9d3a96a1aa23691d1db1c9f5fb6edf859a5
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

  • Default

C2

  • 209.25.140.1:42550

Attributes
  • delay

    1

  • install

    true

  • install_file

    test.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\ClientX.exe
    "C:\Users\Admin\AppData\Local\Temp\ClientX.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3680
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Roaming\test.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4620
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Roaming\test.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:2756
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp37C9.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4272
      • C:\Users\Admin\AppData\Roaming\test.exe
        "C:\Users\Admin\AppData\Roaming\test.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2212

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp37C9.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp37C9.tmp.bat
        • Size 148B
        • SHA256 c17f006200e17d552e54bfe0b1ff0fb150051fc9e0c9160e64b77b8d11fd7dac
        • MD5 SHA1 SHA512
        Submit Download

        DataLogs.conf
        • Path C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
        • Size 8B
        • SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
        • MD5 SHA1 SHA512
        Submit Download

        test.exe
        • Path C:\Users\Admin\AppData\Roaming\test.exe
        • Size 73KB
        • SHA256 97286457d8ab5c3d58a7ca6b81dbf9d3a96a1aa23691d1db1c9f5fb6edf859a5
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/3680-0-0x00007FFCA4693000-0x00007FFCA4695000-memory.dmp
        Download

        memory/3680-1-0x0000000000ED0000-0x0000000000EE6000-memory.dmp
        Download

        memory/3680-3-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp
        Download

        memory/3680-8-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp
        Download

        memory/3680-14-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp
        Download