Analysis

  • max time kernel
    42s
  • max time network
    165s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-04-2022 13:35

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.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 3 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 3 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
    • Suspicious use of WriteProcessMemory
    PID:1836
    • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1632
      • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"
        3⤵
          PID:880

    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

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

      Filesize

      17KB

      MD5

      89dd6e72358a669b7d6e2348307a7af7

      SHA1

      0db348f3c6114a45d71f4d218e0e088b71c7bb0a

      SHA256

      ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e

      SHA512

      93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

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

      Filesize

      17KB

      MD5

      89dd6e72358a669b7d6e2348307a7af7

      SHA1

      0db348f3c6114a45d71f4d218e0e088b71c7bb0a

      SHA256

      ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e

      SHA512

      93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

    • memory/880-91-0x0000000002036000-0x0000000002055000-memory.dmp

      Filesize

      124KB

    • memory/880-90-0x000007FEF2190000-0x000007FEF3226000-memory.dmp

      Filesize

      16.6MB

    • memory/880-87-0x0000000000000000-mapping.dmp

    • memory/1632-76-0x00000000005E5000-0x00000000005E9000-memory.dmp

      Filesize

      16KB

    • memory/1632-72-0x00000000005ED000-0x00000000005F1000-memory.dmp

      Filesize

      16KB

    • memory/1632-63-0x0000000000000000-mapping.dmp

    • memory/1632-86-0x00000000005D1000-0x00000000005F0000-memory.dmp

      Filesize

      124KB

    • memory/1632-85-0x00000000005C9000-0x00000000005CF000-memory.dmp

      Filesize

      24KB

    • memory/1632-84-0x00000000005C0000-0x00000000005C3000-memory.dmp

      Filesize

      12KB

    • memory/1632-66-0x000007FEF2190000-0x000007FEF3226000-memory.dmp

      Filesize

      16.6MB

    • memory/1632-69-0x0000000000596000-0x00000000005B5000-memory.dmp

      Filesize

      124KB

    • memory/1632-70-0x00000000005D1000-0x00000000005D4000-memory.dmp

      Filesize

      12KB

    • memory/1632-78-0x00000000005F1000-0x00000000005F5000-memory.dmp

      Filesize

      16KB

    • memory/1632-77-0x00000000005E9000-0x00000000005ED000-memory.dmp

      Filesize

      16KB

    • memory/1632-83-0x00000000005BF000-0x00000000005C3000-memory.dmp

      Filesize

      16KB

    • memory/1632-75-0x00000000005E1000-0x00000000005E5000-memory.dmp

      Filesize

      16KB

    • memory/1632-74-0x00000000005C2000-0x00000000005C6000-memory.dmp

      Filesize

      16KB

    • memory/1632-73-0x00000000005C9000-0x00000000005CF000-memory.dmp

      Filesize

      24KB

    • memory/1632-82-0x00000000005BE000-0x00000000005C3000-memory.dmp

      Filesize

      20KB

    • memory/1632-71-0x00000000005DD000-0x00000000005E1000-memory.dmp

      Filesize

      16KB

    • memory/1632-79-0x00000000005F5000-0x00000000005F9000-memory.dmp

      Filesize

      16KB

    • memory/1632-80-0x00000000005F9000-0x00000000005FD000-memory.dmp

      Filesize

      16KB

    • memory/1632-81-0x00000000005F5000-0x00000000005F8000-memory.dmp

      Filesize

      12KB

    • memory/1836-62-0x0000000001E0D000-0x0000000001E11000-memory.dmp

      Filesize

      16KB

    • memory/1836-54-0x000007FEF2190000-0x000007FEF3226000-memory.dmp

      Filesize

      16.6MB

    • memory/1836-67-0x0000000001E1C000-0x0000000001E20000-memory.dmp

      Filesize

      16KB

    • memory/1836-60-0x0000000001E21000-0x0000000001E29000-memory.dmp

      Filesize

      32KB

    • memory/1836-61-0x0000000001E16000-0x0000000001E1E000-memory.dmp

      Filesize

      32KB

    • memory/1836-59-0x0000000001E1B000-0x0000000001E1E000-memory.dmp

      Filesize

      12KB

    • memory/1836-58-0x0000000001E18000-0x0000000001E1B000-memory.dmp

      Filesize

      12KB

    • memory/1836-57-0x0000000001E2E000-0x0000000001E32000-memory.dmp

      Filesize

      16KB

    • memory/1836-56-0x0000000001DE6000-0x0000000001E05000-memory.dmp

      Filesize

      124KB

    • memory/1836-55-0x000007FEFB751000-0x000007FEFB753000-memory.dmp

      Filesize

      8KB