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Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/08/2024, 08:34

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General

  • Target

    Client.exe

  • Size

    63KB

  • MD5

    a8515eaaad39b50757b65dacd5c17042

  • SHA1

    98bf1b3765448f24447bdcd4117e972fae8fe09e

  • SHA256

    f22ec9c2df8efd42827f0c23c3a47c5cd776e2213cad5f1e067c4f2e4ac0cebe

  • SHA512

    d35bc0179ef0a94fbe579fc4c2991a5a8e720eea2fc70d50a731d37b3934bc90214239339840fcfd82553d08ba54d22dc56d182902cead6d8a2692065a3cd667

  • SSDEEP

    1536:QhW5hc1kw0kV7eeiIVrGbbXw5o6zUKGODpqKmY7:QhW5hc1kWVieXGbbX76w0gz

Score
10/10
asyncratvenom clientsrat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

software-julia.gl.at.ply.gg:17106

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    true

  • install_file

    Windows.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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3520
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1320
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9E63.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3432
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3956
      • C:\Users\Admin\AppData\Roaming\Windows.exe
        "C:\Users\Admin\AppData\Roaming\Windows.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1872

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9E63.tmp.bat
    Filesize

    151B

    MD5

    e512f108ded777a61c30f29fbd426a79

    SHA1

    86ccff47529b2123b08aa3ccd10f8a450faf398f

    SHA256

    592f6fe8f63031b665dcdf7ac138e408d130dd76ef7bb421274a4fc0ded7c5cc

    SHA512

    1a0ee1f810c6e896435dcf48c15babf39081bf1a007029adc3247cb2af46da1ea3724c95a0856591125405c89aa224b8dea1e9a4e31352f84143687e43a5ec26

    Download Submit

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

    63KB

    MD5

    a8515eaaad39b50757b65dacd5c17042

    SHA1

    98bf1b3765448f24447bdcd4117e972fae8fe09e

    SHA256

    f22ec9c2df8efd42827f0c23c3a47c5cd776e2213cad5f1e067c4f2e4ac0cebe

    SHA512

    d35bc0179ef0a94fbe579fc4c2991a5a8e720eea2fc70d50a731d37b3934bc90214239339840fcfd82553d08ba54d22dc56d182902cead6d8a2692065a3cd667

    Download Submit

  • memory/3520-0-0x00007FF965A33000-0x00007FF965A35000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3520-1-0x0000000000540000-0x0000000000556000-memory.dmp

    Filesize

    88KB

    Download

  • memory/3520-2-0x00007FF965A30000-0x00007FF9664F1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3520-7-0x00007FF965A30000-0x00007FF9664F1000-memory.dmp

    Filesize

    10.8MB

    Download