Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2024 20:46

General

  • Target

    77aedb0102f6a55e5ffca05bec4101b76a472ccc615b47023ba563d385baa8c7N.exe

  • Size

    80KB

  • MD5

    65f71fd2b2514563d745a41c7e717760

  • SHA1

    3f996d77e470df5285350ae8aa3c9fe6ec557981

  • SHA256

    77aedb0102f6a55e5ffca05bec4101b76a472ccc615b47023ba563d385baa8c7

  • SHA512

    81b8b5caf8cc015428e5c6e8c1be363057fb83e659c3bc83cb67e6aa5c7526e1f4a281efaca7fb6a213b1fd051c22676e64434da3665a418a4e7c772924de15a

  • SSDEEP

    1536:dPvK/3zvzVQtCsscKvW2jzJxuOmb54vHTL6lm: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\77aedb0102f6a55e5ffca05bec4101b76a472ccc615b47023ba563d385baa8c7N.exe
    "C:\Users\Admin\AppData\Local\Temp\77aedb0102f6a55e5ffca05bec4101b76a472ccc615b47023ba563d385baa8c7N.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:756
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2456
    • 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:2356
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1276

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab9FAB.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    80KB

    MD5

    65f71fd2b2514563d745a41c7e717760

    SHA1

    3f996d77e470df5285350ae8aa3c9fe6ec557981

    SHA256

    77aedb0102f6a55e5ffca05bec4101b76a472ccc615b47023ba563d385baa8c7

    SHA512

    81b8b5caf8cc015428e5c6e8c1be363057fb83e659c3bc83cb67e6aa5c7526e1f4a281efaca7fb6a213b1fd051c22676e64434da3665a418a4e7c772924de15a

  • C:\Users\Admin\AppData\Local\Temp\Tar9FBE.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    5579d39eda40057d53d4978c7b368227

    SHA1

    c77026c1debbc766bc6d2da6566d26fb8353daa5

    SHA256

    777d66d21a6e730de1bfdf036d785bf18879fcc55a8e365ea6934e0c5979d023

    SHA512

    909045725ad30b59d862a8402bdcdb18716087f7432931eb19030546a92f692fe1612cae42340656f80da72f1d56bc763893c297ed4191f4b81a62bee9511d28

  • memory/756-61-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-64-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-3-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-41-0x000007FEF646E000-0x000007FEF646F000-memory.dmp

    Filesize

    4KB

  • memory/756-44-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-45-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-49-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-2-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-51-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-52-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-57-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-58-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-0-0x000007FEF646E000-0x000007FEF646F000-memory.dmp

    Filesize

    4KB

  • memory/756-1-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-59-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-4-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-73-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-62-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-65-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-66-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-67-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-68-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-71-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-70-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/756-72-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/1276-79-0x000000001B490000-0x000000001B772000-memory.dmp

    Filesize

    2.9MB

  • memory/1276-80-0x0000000001F00000-0x0000000001F08000-memory.dmp

    Filesize

    32KB

  • memory/2356-69-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/2356-81-0x000007FEF61B0000-0x000007FEF6B4D000-memory.dmp

    Filesize

    9.6MB

  • memory/2456-63-0x0000000002760000-0x0000000002768000-memory.dmp

    Filesize

    32KB

  • memory/2456-60-0x000000001B5A0000-0x000000001B882000-memory.dmp

    Filesize

    2.9MB