Overview

overview

10

Static

static

10

637d28dbae...e0.exe

windows7-x64

10

637d28dbae...e0.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 18:47

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General

  • Target
    637d28dbae0ce3b9af8bce8af89af1589c2cf1f5c01219e4e8c30d75d776e6e0.exe
  • Size 74KB
  • Sample240818-xfa54a1gpk
  • SHA256 637d28dbae0ce3b9af8bce8af89af1589c2cf1f5c01219e4e8c30d75d776e6e0
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
asyncratmihrkrat

Malware Config

Extracted

Family

  • asyncrat

Version

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

Botnet

  • MiHRK

C2

  • 147.185.221.19:9062

Mutex

  • guvhxsunsdttyzp

Attributes
  • delay

    3

  • install

    true

  • install_file

    Internet Support.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • VenomRAT 2 IoCs

    Detects VenomRAT.

    rat
  • Async RAT payload 1 IoCs
    rat
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 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\637d28dbae0ce3b9af8bce8af89af1589c2cf1f5c01219e4e8c30d75d776e6e0.exe
    "C:\Users\Admin\AppData\Local\Temp\637d28dbae0ce3b9af8bce8af89af1589c2cf1f5c01219e4e8c30d75d776e6e0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2332
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Internet Support" /tr '"C:\Users\Admin\AppData\Roaming\Internet Support.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:640
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Internet Support" /tr '"C:\Users\Admin\AppData\Roaming\Internet Support.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4188
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCC97.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4872
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:424
      • C:\Users\Admin\AppData\Roaming\Internet Support.exe
        "C:\Users\Admin\AppData\Roaming\Internet Support.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4552

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        tmpCC97.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmpCC97.tmp.bat
        • Size 160B
        • SHA256 0f94d76b96c2c36cf389d1dd505c53795091307300ac489b81af1fa3aa502902
        • MD5 SHA1 SHA512
        Submit Download

        Internet Support.exe
        • Path C:\Users\Admin\AppData\Roaming\Internet Support.exe
        • Size 74KB
        • SHA256 637d28dbae0ce3b9af8bce8af89af1589c2cf1f5c01219e4e8c30d75d776e6e0
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

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

        memory/2332-0-0x00007FF9FAC73000-0x00007FF9FAC75000-memory.dmp
        Download

        memory/2332-1-0x0000000000A00000-0x0000000000A18000-memory.dmp
        Download

        memory/2332-3-0x00007FF9FAC70000-0x00007FF9FB731000-memory.dmp
        Download

        memory/2332-6-0x00007FF9FAC70000-0x00007FF9FB731000-memory.dmp
        Download

        memory/2332-9-0x00007FF9FAC70000-0x00007FF9FB731000-memory.dmp
        Download