Overview

overview

10

Static

static

10

9c75c0e33b...8a.exe

windows7-x64

10

9c75c0e33b...8a.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/06/2024, 01:38

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General

  • Target
    9c75c0e33bb81cadd1659deef9302106b7f2358cd8ea613e6e8b76f41e60ba8a.exe
  • Size 74KB
  • Sample240629-b2ngna1dkn
  • SHA256 9c75c0e33bb81cadd1659deef9302106b7f2358cd8ea613e6e8b76f41e60ba8a
  • 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

  • 91.92.246.193:4444

Mutex

  • jugycwtdwjqv

Attributes
  • delay

    1

  • install

    true

  • install_file

    task.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Detects executables attemping to enumerate video devices using WMI 2 IoCs
  • 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).

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 30 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\9c75c0e33bb81cadd1659deef9302106b7f2358cd8ea613e6e8b76f41e60ba8a.exe
    "C:\Users\Admin\AppData\Local\Temp\9c75c0e33bb81cadd1659deef9302106b7f2358cd8ea613e6e8b76f41e60ba8a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4012
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "task" /tr '"C:\Users\Admin\AppData\Roaming\task.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3940
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "task" /tr '"C:\Users\Admin\AppData\Roaming\task.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3176
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4371.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3676
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4696
      • C:\Users\Admin\AppData\Roaming\task.exe
        "C:\Users\Admin\AppData\Roaming\task.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:464

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        tmp4371.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp4371.tmp.bat
        • Size 148B
        • SHA256 5454f68c8ca13145a3026266430108b2e3b5e8481705500a1cc0f795c209d78f
        • 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

        task.exe
        • Path C:\Users\Admin\AppData\Roaming\task.exe
        • Size 74KB
        • SHA256 9c75c0e33bb81cadd1659deef9302106b7f2358cd8ea613e6e8b76f41e60ba8a
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/4012-0-0x00007FF93ADA3000-0x00007FF93ADA5000-memory.dmp
        Download

        memory/4012-1-0x0000000000160000-0x0000000000178000-memory.dmp
        Download

        memory/4012-3-0x00007FF93ADA0000-0x00007FF93B861000-memory.dmp
        Download

        memory/4012-8-0x00007FF93ADA0000-0x00007FF93B861000-memory.dmp
        Download