Analysis

  • max time kernel
    69s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28-04-2022 19:36

General

  • Target

    b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe

  • Size

    131KB

  • MD5

    c4f79edc4498c5570495bb36fc942134

  • SHA1

    00046b588252502480e8e708a22d25ae1d9b05fa

  • SHA256

    b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09

  • SHA512

    07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef

Malware Config

Extracted

Family

blacknet

Version

v3.5 Public

Botnet

HacKed

C2

http://finalb.xyz/NiggaNet

Mutex

BN[RqfcWolJ-7232457]

Attributes
  • antivm

    true

  • elevate_uac

    false

  • install_name

    WindowsUpdate.exe

  • splitter

    |BN|

  • start_name

    df7427b5e05183e625345c3c37ef31c0

  • startup

    true

  • usb_spread

    true

aes.plain

Signatures

  • BlackNET

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

  • BlackNET Payload 2 IoCs
  • Contains code to disable Windows Defender 2 IoCs

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

  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe
    "C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:984
    • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
        PID:1908

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      131KB

      MD5

      c4f79edc4498c5570495bb36fc942134

      SHA1

      00046b588252502480e8e708a22d25ae1d9b05fa

      SHA256

      b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09

      SHA512

      07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef

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

      Filesize

      131KB

      MD5

      c4f79edc4498c5570495bb36fc942134

      SHA1

      00046b588252502480e8e708a22d25ae1d9b05fa

      SHA256

      b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09

      SHA512

      07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef

    • memory/984-66-0x0000000000B95000-0x0000000000BA0000-memory.dmp

      Filesize

      44KB

    • memory/984-55-0x000007FEFC4D1000-0x000007FEFC4D3000-memory.dmp

      Filesize

      8KB

    • memory/984-58-0x0000000000B85000-0x0000000000B89000-memory.dmp

      Filesize

      16KB

    • memory/984-60-0x0000000000B71000-0x0000000000B75000-memory.dmp

      Filesize

      16KB

    • memory/984-59-0x0000000000B89000-0x0000000000B8D000-memory.dmp

      Filesize

      16KB

    • memory/984-62-0x0000000000B79000-0x0000000000B7D000-memory.dmp

      Filesize

      16KB

    • memory/984-63-0x0000000000B7D000-0x0000000000B81000-memory.dmp

      Filesize

      16KB

    • memory/984-61-0x0000000000B75000-0x0000000000B79000-memory.dmp

      Filesize

      16KB

    • memory/984-64-0x0000000000B81000-0x0000000000B85000-memory.dmp

      Filesize

      16KB

    • memory/984-65-0x0000000000B8D000-0x0000000000B95000-memory.dmp

      Filesize

      32KB

    • memory/984-54-0x000007FEF3630000-0x000007FEF46C6000-memory.dmp

      Filesize

      16.6MB

    • memory/984-57-0x0000000000B6D000-0x0000000000B71000-memory.dmp

      Filesize

      16KB

    • memory/984-69-0x000000001EE11000-0x000000001EE19000-memory.dmp

      Filesize

      32KB

    • memory/984-70-0x0000000000B61000-0x0000000000B64000-memory.dmp

      Filesize

      12KB

    • memory/984-68-0x000000001EE09000-0x000000001EE11000-memory.dmp

      Filesize

      32KB

    • memory/984-71-0x0000000000B59000-0x0000000000B5F000-memory.dmp

      Filesize

      24KB

    • memory/984-72-0x000000001EE01000-0x000000001EE08000-memory.dmp

      Filesize

      28KB

    • memory/984-73-0x0000000000B4C000-0x0000000000B56000-memory.dmp

      Filesize

      40KB

    • memory/984-74-0x0000000000B62000-0x0000000000B66000-memory.dmp

      Filesize

      16KB

    • memory/984-67-0x000000001EE00000-0x000000001EE09000-memory.dmp

      Filesize

      36KB

    • memory/984-56-0x0000000000B26000-0x0000000000B45000-memory.dmp

      Filesize

      124KB

    • memory/1908-75-0x0000000000000000-mapping.dmp

    • memory/1908-78-0x000007FEF3630000-0x000007FEF46C6000-memory.dmp

      Filesize

      16.6MB

    • memory/1908-80-0x0000000001EE6000-0x0000000001F05000-memory.dmp

      Filesize

      124KB