Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    139s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01/01/2025, 11:42

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General

  • Target

    Client.exe

  • Size

    74KB

  • MD5

    5fc0aa988d6e0a9c69dd4bf2c6b3eee2

  • SHA1

    1820e65b8de60e17c9ce38bbda993260973eda0b

  • SHA256

    1077acd7efd231e5852b8136197a35a570f4eb1a1d6abda44954003de48eb7b3

  • SHA512

    91efeabac1e35719cbef3fe244a7555adf28896abe390623eb6faef060ea283ad2e285c494e00b3d1d5853a8a79b8b7c36258ad4d064082cc8ff2a1e25e3e4e0

  • SSDEEP

    1536:9UzwcxbUTCrmPMVOe9VdQuDI6H1bf/HE6QzcSLVclN:9U0cxbgwmPMVOe9VdQsH1bfPFQDBY

Score
10/10
asyncratvenomratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:9999

10.9.137.110:9999
Mutex

ytgjjhywchk

Attributes
  • delay

    1

  • install

    true

  • install_file

    RealtekHighDefinitionAudio.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Asyncrat family
    asyncrat
  • VenomRAT 3 IoCs

    Detects VenomRAT.

    rat
  • Venomrat family
    venomrat
  • Async RAT payload 1 IoCs
    rat
  • 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 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⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RealtekHighDefinitionAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1352
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "RealtekHighDefinitionAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2780
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD2F8.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1492
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2732
      • C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe
        "C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2744

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpD2F8.tmp.bat
          Filesize

          170B

          MD5

          8f0e13a864956629574a400eb4b7effb

          SHA1

          9f6ec3818d25b41604b9b9ec02731b9865b224f1

          SHA256

          a2766e82fdfa0ec2c9f22e322ae46790831a24b5fe1058e28c40ff8853e365a4

          SHA512

          19423bbf21326b5a33541990bfc4344cd5b85686c626fdb3ae30b2280f26647878fab3e8732efb7d59e0ab9b3ce4f71028ffa107b853b7d773e70f0b5fe00d4d

          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\RealtekHighDefinitionAudio.exe
          Filesize

          74KB

          MD5

          5fc0aa988d6e0a9c69dd4bf2c6b3eee2

          SHA1

          1820e65b8de60e17c9ce38bbda993260973eda0b

          SHA256

          1077acd7efd231e5852b8136197a35a570f4eb1a1d6abda44954003de48eb7b3

          SHA512

          91efeabac1e35719cbef3fe244a7555adf28896abe390623eb6faef060ea283ad2e285c494e00b3d1d5853a8a79b8b7c36258ad4d064082cc8ff2a1e25e3e4e0

          Download Submit

        • memory/2544-0-0x000007FEF5B63000-0x000007FEF5B64000-memory.dmp

          Filesize

          4KB

          Download

        • memory/2544-1-0x00000000000D0000-0x00000000000E8000-memory.dmp

          Filesize

          96KB

          Download

        • memory/2544-3-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

          Filesize

          9.9MB

          Download

        • memory/2544-12-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

          Filesize

          9.9MB

          Download

        • memory/2544-14-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

          Filesize

          9.9MB

          Download

        • memory/2744-18-0x0000000000CB0000-0x0000000000CC8000-memory.dmp

          Filesize

          96KB

          Download