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Analysis

  • max time kernel
    8s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/10/2024, 15:38

General

  • Target

    40d7e7f441ca98fc629a154c25aa070d82fc201fef778bd1a56b8113846b1a77N.exe

  • Size

    70KB

  • MD5

    13163e09c1de56bb8403d94e4f817630

  • SHA1

    fe5eb5d3b98cb44b6f95ed061f96151486f5a015

  • SHA256

    40d7e7f441ca98fc629a154c25aa070d82fc201fef778bd1a56b8113846b1a77

  • SHA512

    aba1cca149fe82dfe8af6bab3ae5627f3859fae9dc6ad0a419b83f7992232785fe5a408acbbf5a6fdf225a5200055df50a26bc89ee898ed21fd13697319c53b5

  • SSDEEP

    1536:gFTnqpKxynVYGeifCSzTPb542HkLbvJfxa:gFTNGeifrvb59H+bvJ5a

Malware Config

Signatures

  • BlackNET

    BlackNET is an open source remote access tool written in VB.NET.

  • BlackNET payload 1 IoCs
  • Blacknet 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40d7e7f441ca98fc629a154c25aa070d82fc201fef778bd1a56b8113846b1a77N.exe
    "C:\Users\Admin\AppData\Local\Temp\40d7e7f441ca98fc629a154c25aa070d82fc201fef778bd1a56b8113846b1a77N.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      PID:1768

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

    Filesize

    70KB

    MD5

    13163e09c1de56bb8403d94e4f817630

    SHA1

    fe5eb5d3b98cb44b6f95ed061f96151486f5a015

    SHA256

    40d7e7f441ca98fc629a154c25aa070d82fc201fef778bd1a56b8113846b1a77

    SHA512

    aba1cca149fe82dfe8af6bab3ae5627f3859fae9dc6ad0a419b83f7992232785fe5a408acbbf5a6fdf225a5200055df50a26bc89ee898ed21fd13697319c53b5

  • memory/544-10-0x000000001C9C0000-0x000000001CA22000-memory.dmp

    Filesize

    392KB

  • memory/544-3-0x000000001B7B0000-0x000000001BC7E000-memory.dmp

    Filesize

    4.8MB

  • memory/544-2-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-4-0x000000001BDA0000-0x000000001BE3C000-memory.dmp

    Filesize

    624KB

  • memory/544-5-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-6-0x000000001B290000-0x000000001B298000-memory.dmp

    Filesize

    32KB

  • memory/544-7-0x000000001BF00000-0x000000001BF4C000-memory.dmp

    Filesize

    304KB

  • memory/544-8-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-35-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-9-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-15-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-13-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-14-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-16-0x00007FF92C165000-0x00007FF92C166000-memory.dmp

    Filesize

    4KB

  • memory/544-26-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-1-0x000000001B1E0000-0x000000001B286000-memory.dmp

    Filesize

    664KB

  • memory/544-36-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-0-0x00007FF92C165000-0x00007FF92C166000-memory.dmp

    Filesize

    4KB

  • memory/544-38-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/544-33-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-31-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-32-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-39-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-37-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-30-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-40-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-41-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-42-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-43-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-44-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-45-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-46-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-47-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-48-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-49-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-50-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB

  • memory/1768-51-0x00007FF92BEB0000-0x00007FF92C851000-memory.dmp

    Filesize

    9.6MB