Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2024 13:33

General

  • Target

    05a76fef7c417236dcbb43e4624dc57876a2aff8b9c8bbe16c87f3810b158a1bN.exe

  • Size

    80KB

  • MD5

    bf4edd976fcf5289e7c2531ef3ce69f0

  • SHA1

    c255da8598c17b23da2ad842808ea5e6f03dacd8

  • SHA256

    05a76fef7c417236dcbb43e4624dc57876a2aff8b9c8bbe16c87f3810b158a1b

  • SHA512

    6266415f3088061322077112030397c45544f96938f59ecfe7e26f0c481e15643569b8945a82c7e8a45387cc10c160ad0e9c1e51e27bf0836110723671bd9211

  • SSDEEP

    1536:dPvK/3zvzVQtCsscKvWUjzJxuOmb54vHTL6lm:diqCspazVmb5uHv6lm

Malware Config

Extracted

Family

blacknet

Botnet

HacKed

C2

https://lovegunny.net/

Mutex

BN[GnFquUJG-0548378]

Attributes
  • antivm

    false

  • elevate_uac

    true

  • install_name

    WindowsUpdate.exe

  • splitter

    |BN|

  • start_name

    cde2f914e4cce7f13b2c1cec7b6da970

  • startup

    false

  • usb_spread

    true

Signatures

  • BlackNET

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

  • BlackNET payload 1 IoCs
  • 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.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05a76fef7c417236dcbb43e4624dc57876a2aff8b9c8bbe16c87f3810b158a1bN.exe
    "C:\Users\Admin\AppData\Local\Temp\05a76fef7c417236dcbb43e4624dc57876a2aff8b9c8bbe16c87f3810b158a1bN.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Windows security modification
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2656
    • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      • Windows security modification
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabAAB3.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    80KB

    MD5

    bf4edd976fcf5289e7c2531ef3ce69f0

    SHA1

    c255da8598c17b23da2ad842808ea5e6f03dacd8

    SHA256

    05a76fef7c417236dcbb43e4624dc57876a2aff8b9c8bbe16c87f3810b158a1b

    SHA512

    6266415f3088061322077112030397c45544f96938f59ecfe7e26f0c481e15643569b8945a82c7e8a45387cc10c160ad0e9c1e51e27bf0836110723671bd9211

  • C:\Users\Admin\AppData\Local\Temp\TarAAC5.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\AHC00ILG2XV6GX0JAXTN.temp

    Filesize

    7KB

    MD5

    3ef54a051bb09d152591cb99676e428e

    SHA1

    6dd2ccb3c842d8b637547a3083995001dcb0c01f

    SHA256

    3e44a58e46aaebd6d253f6cac38b95844939a4e3d25054ece58eb3d0591065f1

    SHA512

    84ced541d12838a4521a2a580ee47cce5eab79db3364092c9fdbf65bedcd0d5f8fbc205d0c8918c09d9ef39a9fcedb02448e86126ab896a233bd1d5882cb7366

  • memory/1380-72-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

    Filesize

    2.9MB

  • memory/1380-73-0x0000000002700000-0x0000000002708000-memory.dmp

    Filesize

    32KB

  • memory/1656-46-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-54-0x000007FEF611E000-0x000007FEF611F000-memory.dmp

    Filesize

    4KB

  • memory/1656-42-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-44-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-45-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-0-0x000007FEF611E000-0x000007FEF611F000-memory.dmp

    Filesize

    4KB

  • memory/1656-47-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-1-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-2-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-43-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-3-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-52-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-57-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-40-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-41-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/1656-65-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/2656-60-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/2656-53-0x000000001B740000-0x000000001BA22000-memory.dmp

    Filesize

    2.9MB

  • memory/2656-56-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

    Filesize

    9.6MB

  • memory/2656-55-0x00000000026E0000-0x00000000026E8000-memory.dmp

    Filesize

    32KB