Overview

overview

10

Static

static

10

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • 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

    1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe

  • Size

    74KB

  • MD5

    143734ace32a278d89d77af8c7fdfa80

  • SHA1

    ef834bb92bb57eda87458d1a2ee3525a4b91a6ef

  • SHA256

    1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146

  • SHA512

    e894eecfa4f84dc1e0abbc07cab9faefbf4e9cdd6e4a93089970ce16d01e1db4aa3bd309281e07a36d854691852654e099eecc18244db377cc5664c458a7ce9d

  • SSDEEP

    1536:/Ut8cxqnHXC56PMV+e9VdQuDI6H1bf/TOur1LQzcQTtVclN:/UOcxq3O6PMV+e9VdQsH1bfLPrVQlT/Y

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\1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe
    "C:\Users\Admin\AppData\Local\Temp\1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:116
    • 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:4564
      • 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:3248
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp955A.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4732
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1012
      • 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:3392

Network

MITRE ATT&CK Enterprise v15

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp955A.tmp.bat
    Filesize

    153B

    MD5

    f5ab4344fd2f19807358a67d695f6e29

    SHA1

    a8962b0fc5f5c14e47b88d5aac1d03628ac6e624

    SHA256

    c6fe267e6d1ad682b00a424fcf59be61ba2ec3a9971acb963ff2ad3ce1c4828d

    SHA512

    8448da21bffc9f3924ec006b47211bae96dabc016b9074579f93096a8ea0bfe9088dfee43b8b595b5c5a1fd2caf5504674007542480559048a2de4f4abb8f8ff

    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

    143734ace32a278d89d77af8c7fdfa80

    SHA1

    ef834bb92bb57eda87458d1a2ee3525a4b91a6ef

    SHA256

    1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146

    SHA512

    e894eecfa4f84dc1e0abbc07cab9faefbf4e9cdd6e4a93089970ce16d01e1db4aa3bd309281e07a36d854691852654e099eecc18244db377cc5664c458a7ce9d

    Download Submit

  • memory/116-0-0x00007FFA53293000-0x00007FFA53295000-memory.dmp

    Filesize

    8KB

    Download

  • memory/116-1-0x0000000000BE0000-0x0000000000BF8000-memory.dmp

    Filesize

    96KB

    Download

  • memory/116-3-0x00007FFA53290000-0x00007FFA53D51000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/116-8-0x00007FFA53290000-0x00007FFA53D51000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/116-9-0x00007FFA53290000-0x00007FFA53D51000-memory.dmp

    Filesize

    10.8MB

    Download