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Analysis

  • max time kernel
    130s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/07/2024, 01:22

General

  • Target

    Client (3).exe

  • Size

    170KB

  • MD5

    12e347cf5ba0b74e0f93b8759d1d99cb

  • SHA1

    fe0341f382947c8303cdbf400729c441aca184e0

  • SHA256

    1d7d7e2b90752b9ae4b7cd7db8b62cb0dddee15aa0d6102efd3bb29691ab0fa7

  • SHA512

    3ee3d406322b7f0decb06d52951a20f99358be0dd7feeebd4e0784f2a438e33437b806bcadae32827b51da529a17b63fef763932ee571729de740fd06ec62a9e

  • SSDEEP

    3072:JUacxyNl+GPMV3e9VdQsH1bfkBQXv7Jh1fRu1e16kWOIo0tnBBY:J1l+GPMV3aesVb8Bkb139Yo05f

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.21:4449

147.185.221.21:6703

147.185.221.21:5552

Mutex

wvpjsbhmwvbzxetbd

Attributes
  • delay

    1

  • install

    true

  • install_file

    mm.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 25 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client (3).exe
    "C:\Users\Admin\AppData\Local\Temp\Client (3).exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1140
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mm" /tr '"C:\Users\Admin\AppData\Roaming\mm.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "mm" /tr '"C:\Users\Admin\AppData\Roaming\mm.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1412
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAF7A.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4488
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2996
      • C:\Users\Admin\AppData\Roaming\mm.exe
        "C:\Users\Admin\AppData\Roaming\mm.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAF7A.tmp.bat

    Filesize

    146B

    MD5

    eda8bc2933d56c927a7fb130f5713675

    SHA1

    4262a862ffa9cc073eccd71f2accf54b2ff783b3

    SHA256

    21d406dfd8a99e011497b41b7bcab2121a80297a8c93946005e0e0ae9d9d60e0

    SHA512

    d00b371ab966fbf42b028e3f4f6fdd6e901f14e7c0921a9542a415895f9d75328a308c1ed41ac3134b2f0c72478a1409876517d92f4905bc4c1a845c7ccf8eb7

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

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • C:\Users\Admin\AppData\Roaming\mm.exe

    Filesize

    170KB

    MD5

    12e347cf5ba0b74e0f93b8759d1d99cb

    SHA1

    fe0341f382947c8303cdbf400729c441aca184e0

    SHA256

    1d7d7e2b90752b9ae4b7cd7db8b62cb0dddee15aa0d6102efd3bb29691ab0fa7

    SHA512

    3ee3d406322b7f0decb06d52951a20f99358be0dd7feeebd4e0784f2a438e33437b806bcadae32827b51da529a17b63fef763932ee571729de740fd06ec62a9e

  • memory/1140-1-0x00000000009B0000-0x00000000009E0000-memory.dmp

    Filesize

    192KB

  • memory/1140-0-0x00007FF83B0D3000-0x00007FF83B0D5000-memory.dmp

    Filesize

    8KB

  • memory/1140-3-0x00007FF83B0D0000-0x00007FF83BB91000-memory.dmp

    Filesize

    10.8MB

  • memory/1140-8-0x00007FF83B0D0000-0x00007FF83BB91000-memory.dmp

    Filesize

    10.8MB

  • memory/1140-9-0x00007FF83B0D0000-0x00007FF83BB91000-memory.dmp

    Filesize

    10.8MB

  • memory/4420-15-0x00000000017C0000-0x0000000001836000-memory.dmp

    Filesize

    472KB

  • memory/4420-16-0x0000000001740000-0x000000000174E000-memory.dmp

    Filesize

    56KB

  • memory/4420-17-0x0000000001770000-0x000000000178E000-memory.dmp

    Filesize

    120KB

  • memory/4420-18-0x00000000018A0000-0x00000000018B0000-memory.dmp

    Filesize

    64KB