Analysis

  • max time kernel
    31s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    10-04-2022 19:19

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.

  • Program crash 1 IoCs
  • 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:480
    • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
        PID:972
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 972 -s 708
          3⤵
          • Program crash
          PID:1480

    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/480-72-0x0000000000B35000-0x0000000000B40000-memory.dmp

      Filesize

      44KB

    • memory/480-59-0x0000000000AEB000-0x0000000000AF8000-memory.dmp

      Filesize

      52KB

    • memory/480-58-0x0000000000AFE000-0x0000000000B00000-memory.dmp

      Filesize

      8KB

    • memory/480-73-0x000000001F300000-0x000000001F309000-memory.dmp

      Filesize

      36KB

    • memory/480-60-0x0000000000B01000-0x0000000000B03000-memory.dmp

      Filesize

      8KB

    • memory/480-74-0x0000000000B01000-0x0000000000B04000-memory.dmp

      Filesize

      12KB

    • memory/480-62-0x0000000000B05000-0x0000000000B07000-memory.dmp

      Filesize

      8KB

    • memory/480-63-0x0000000000B07000-0x0000000000B09000-memory.dmp

      Filesize

      8KB

    • memory/480-64-0x0000000000B09000-0x0000000000B0B000-memory.dmp

      Filesize

      8KB

    • memory/480-65-0x0000000000B0B000-0x0000000000B0D000-memory.dmp

      Filesize

      8KB

    • memory/480-66-0x0000000000B0D000-0x0000000000B11000-memory.dmp

      Filesize

      16KB

    • memory/480-67-0x0000000000B11000-0x0000000000B15000-memory.dmp

      Filesize

      16KB

    • memory/480-68-0x0000000000B15000-0x0000000000B19000-memory.dmp

      Filesize

      16KB

    • memory/480-69-0x0000000000B1D000-0x0000000000B21000-memory.dmp

      Filesize

      16KB

    • memory/480-70-0x0000000000B21000-0x0000000000B25000-memory.dmp

      Filesize

      16KB

    • memory/480-71-0x0000000000B2D000-0x0000000000B35000-memory.dmp

      Filesize

      32KB

    • memory/480-54-0x000007FEEE150000-0x000007FEEF1E6000-memory.dmp

      Filesize

      16.6MB

    • memory/480-57-0x0000000000AFC000-0x0000000000AFE000-memory.dmp

      Filesize

      8KB

    • memory/480-61-0x0000000000B03000-0x0000000000B05000-memory.dmp

      Filesize

      8KB

    • memory/480-75-0x0000000000B07000-0x0000000000B0A000-memory.dmp

      Filesize

      12KB

    • memory/480-76-0x0000000000AF9000-0x0000000000AFF000-memory.dmp

      Filesize

      24KB

    • memory/480-77-0x0000000000AEC000-0x0000000000AF8000-memory.dmp

      Filesize

      48KB

    • memory/480-79-0x0000000000AFA000-0x0000000000AFF000-memory.dmp

      Filesize

      20KB

    • memory/480-80-0x0000000000B0D000-0x0000000000B1C000-memory.dmp

      Filesize

      60KB

    • memory/480-78-0x0000000000B08000-0x0000000000B0A000-memory.dmp

      Filesize

      8KB

    • memory/480-81-0x0000000000B01000-0x0000000000B03000-memory.dmp

      Filesize

      8KB

    • memory/480-82-0x000000001F309000-0x000000001F311000-memory.dmp

      Filesize

      32KB

    • memory/480-83-0x0000000000B10000-0x0000000000B1C000-memory.dmp

      Filesize

      48KB

    • memory/480-55-0x0000000000AC0000-0x0000000000AC2000-memory.dmp

      Filesize

      8KB

    • memory/480-56-0x0000000000AC6000-0x0000000000AE5000-memory.dmp

      Filesize

      124KB

    • memory/972-84-0x0000000000000000-mapping.dmp

    • memory/972-87-0x000007FEEE150000-0x000007FEEF1E6000-memory.dmp

      Filesize

      16.6MB

    • memory/972-88-0x0000000000490000-0x0000000000510000-memory.dmp

      Filesize

      512KB

    • memory/972-89-0x0000000000490000-0x0000000000510000-memory.dmp

      Filesize

      512KB

    • memory/1480-90-0x0000000000000000-mapping.dmp