Overview

overview

10

Static

static

10

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-08-2024 11:58

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General

  • Target

    749911c61e23b64b45f28d453a8b70275f824092d8dab39ccc1e93464d26b450.exe

  • Size

    74KB

  • MD5

    2d6a4155a7d17a0cfce4ad6e8571c674

  • SHA1

    9992d09dfac2f5445a7d29d2ab1d68b42608b348

  • SHA256

    749911c61e23b64b45f28d453a8b70275f824092d8dab39ccc1e93464d26b450

  • SHA512

    c6033f05cc9ec432dfe22a00aaf5461708f95954326a78c52f0c4617d50811a3ff30e99c300df28dea4530f2c952c1048d6f2c5415010b1a860c8570f45991ee

  • SSDEEP

    1536:cOUt8cxqnHXC56PMVCUiLsiIyLH1bT/yDkuQzcaLVclN:cOUOcxq3O6PMV9iFLH1bT6IuQLBY

Score
10/10
asyncratrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Mutex

rufrwqqzhtx

Attributes
  • delay

    1

  • install

    true

  • install_file

    WinUpdate.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
  • 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 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\749911c61e23b64b45f28d453a8b70275f824092d8dab39ccc1e93464d26b450.exe
    "C:\Users\Admin\AppData\Local\Temp\749911c61e23b64b45f28d453a8b70275f824092d8dab39ccc1e93464d26b450.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3964
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2120
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4756
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD45.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3416
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2528
      • C:\Users\Admin\AppData\Roaming\WinUpdate.exe
        "C:\Users\Admin\AppData\Roaming\WinUpdate.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpBD45.tmp.bat
    Filesize

    153B

    MD5

    102c38a0be1b86f313ac47437afcc318

    SHA1

    c822e6172b501e03c7fc2b77fa4b2c940ece492e

    SHA256

    77af6344f574482f0dcd41fb639039bd5059b0c7468b21c2615d9ad43a4d9dac

    SHA512

    4d2a1e2d53dd88d543e2890be734026866f7b6122f7d78af0332a6db4e5e52340132e527dcc860eaf98f36a4fd3812e7e76c93e38b5aacc8820fa416847358ad

    Download Submit

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

    Download Submit

  • C:\Users\Admin\AppData\Roaming\WinUpdate.exe
    Filesize

    74KB

    MD5

    2d6a4155a7d17a0cfce4ad6e8571c674

    SHA1

    9992d09dfac2f5445a7d29d2ab1d68b42608b348

    SHA256

    749911c61e23b64b45f28d453a8b70275f824092d8dab39ccc1e93464d26b450

    SHA512

    c6033f05cc9ec432dfe22a00aaf5461708f95954326a78c52f0c4617d50811a3ff30e99c300df28dea4530f2c952c1048d6f2c5415010b1a860c8570f45991ee

    Download Submit

  • memory/3964-0-0x00007FFA7F9B3000-0x00007FFA7F9B5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3964-1-0x00000000004F0000-0x0000000000508000-memory.dmp

    Filesize

    96KB

    Download

  • memory/3964-3-0x00007FFA7F9B0000-0x00007FFA80471000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3964-8-0x00007FFA7F9B0000-0x00007FFA80471000-memory.dmp

    Filesize

    10.8MB

    Download