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Analysis

  • max time kernel
    120s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2024, 15:53

General

  • Target

    e7d8792a01226318a6d51f5de16b6f32a51ecb9e3726a665c007171a6dd09161N.exe

  • Size

    270KB

  • MD5

    097fb93775b8349a0aa7de58e1a14c70

  • SHA1

    40540069a8bb04a64107b1c34f0293d774d3f129

  • SHA256

    e7d8792a01226318a6d51f5de16b6f32a51ecb9e3726a665c007171a6dd09161

  • SHA512

    737f0b29eed3cafec815232a60f35c71ec2d8ad1347e4d2cb5741357157d8e45c2477a7ad7ac7829fd595b7c5de2da1f804c9402b73738a03a85859aef69a072

  • SSDEEP

    3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdkXf:WFzDqa86hV6uRRqX1evPlwAEdkXf

Malware Config

Extracted

Family

asyncrat

Version

0.4.9G

C2

corporation.warzonedns.com:9341

Mutex

480-28105c055659

Attributes
  • delay

    0

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e7d8792a01226318a6d51f5de16b6f32a51ecb9e3726a665c007171a6dd09161N.exe
    "C:\Users\Admin\AppData\Local\Temp\e7d8792a01226318a6d51f5de16b6f32a51ecb9e3726a665c007171a6dd09161N.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
      "C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3132
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        PID:668
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 180
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4596
  • C:\Windows\system32\wbem\WmiApSrv.exe
    C:\Windows\system32\wbem\WmiApSrv.exe
    1⤵
      PID:1784

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat

      Filesize

      213B

      MD5

      0955cb4b691d44b37f8b6fad48a33b8e

      SHA1

      9dae759ae014cc124ab6eed7c8035788c124ae4a

      SHA256

      9092dbb1ca1767d1966b7f79349dd95a802a68248251bf070c0f1d74d5681d71

      SHA512

      08b868a028c1e8d29ed643416850df16f58d44668f9193b46bd3934965e5617a0a4015fc52815c5456023dbde01023450d295b76d936a936f26b602e764b0235

    • C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe

      Filesize

      270KB

      MD5

      4ba3619c730610beee924af5ab931735

      SHA1

      447191d7d2bcb2327f8fe778e11c93691654d857

      SHA256

      89fb382407c55bd4918c637e356f85528f43fc5daff9904bdaadd8bbb9e689e5

      SHA512

      66b3f4294193962db8b6466d88da5604d22207de724fafc6b29900dd14adafd1b9db3cdd186fc6fc3d730856e7cad13673a59dea2d49328647ebc5dd7ddb1cbb

    • memory/668-29-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1864-6-0x0000000005650000-0x000000000565A000-memory.dmp

      Filesize

      40KB

    • memory/1864-4-0x0000000005660000-0x000000000566A000-memory.dmp

      Filesize

      40KB

    • memory/1864-5-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

    • memory/1864-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

      Filesize

      4KB

    • memory/1864-10-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

      Filesize

      4KB

    • memory/1864-3-0x00000000056D0000-0x0000000005762000-memory.dmp

      Filesize

      584KB

    • memory/1864-25-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

    • memory/1864-2-0x0000000005BE0000-0x0000000006184000-memory.dmp

      Filesize

      5.6MB

    • memory/1864-1-0x0000000000C10000-0x0000000000C56000-memory.dmp

      Filesize

      280KB

    • memory/3132-26-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

    • memory/3132-27-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

    • memory/3132-31-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB