Analysis

  • max time kernel
    61s
  • max time network
    93s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28-04-2022 13:36

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 3 IoCs
  • Contains code to disable Windows Defender 3 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:1892
    • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
        PID:1360
      • C:\Users\Admin\AppData\Local\Temp\svchosts.exe
        "C:\Users\Admin\AppData\Local\Temp\svchosts.exe"
        2⤵
          PID:680
          • C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe
            "C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"
            3⤵
              PID:1336

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe

          Filesize

          131KB

          MD5

          c4f79edc4498c5570495bb36fc942134

          SHA1

          00046b588252502480e8e708a22d25ae1d9b05fa

          SHA256

          b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09

          SHA512

          07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef

        • C:\Users\Admin\AppData\Local\Temp\svchosts.exe

          Filesize

          17KB

          MD5

          89dd6e72358a669b7d6e2348307a7af7

          SHA1

          0db348f3c6114a45d71f4d218e0e088b71c7bb0a

          SHA256

          ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e

          SHA512

          93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

        • C:\Users\Admin\AppData\Local\Temp\svchosts.exe

          Filesize

          17KB

          MD5

          89dd6e72358a669b7d6e2348307a7af7

          SHA1

          0db348f3c6114a45d71f4d218e0e088b71c7bb0a

          SHA256

          ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e

          SHA512

          93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

        • 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/680-73-0x0000000001E96000-0x0000000001EB5000-memory.dmp

          Filesize

          124KB

        • memory/680-72-0x000007FEF2B10000-0x000007FEF3BA6000-memory.dmp

          Filesize

          16.6MB

        • memory/680-68-0x0000000000000000-mapping.dmp

        • memory/1336-79-0x0000000000A66000-0x0000000000A85000-memory.dmp

          Filesize

          124KB

        • memory/1336-77-0x000007FEF2B10000-0x000007FEF3BA6000-memory.dmp

          Filesize

          16.6MB

        • memory/1336-75-0x0000000000000000-mapping.dmp

        • memory/1360-64-0x0000000000000000-mapping.dmp

        • memory/1360-67-0x000007FEF2B10000-0x000007FEF3BA6000-memory.dmp

          Filesize

          16.6MB

        • memory/1360-74-0x0000000001FF6000-0x0000000002015000-memory.dmp

          Filesize

          124KB

        • memory/1892-54-0x000007FEF2B10000-0x000007FEF3BA6000-memory.dmp

          Filesize

          16.6MB

        • memory/1892-61-0x000000000205D000-0x0000000002061000-memory.dmp

          Filesize

          16KB

        • memory/1892-63-0x0000000002066000-0x0000000002069000-memory.dmp

          Filesize

          12KB

        • memory/1892-62-0x0000000002063000-0x0000000002069000-memory.dmp

          Filesize

          24KB

        • memory/1892-60-0x0000000002071000-0x0000000002076000-memory.dmp

          Filesize

          20KB

        • memory/1892-59-0x000000000206C000-0x000000000206F000-memory.dmp

          Filesize

          12KB

        • memory/1892-58-0x0000000002081000-0x0000000002085000-memory.dmp

          Filesize

          16KB

        • memory/1892-57-0x000000000207D000-0x0000000002081000-memory.dmp

          Filesize

          16KB

        • memory/1892-56-0x0000000002036000-0x0000000002055000-memory.dmp

          Filesize

          124KB

        • memory/1892-55-0x000007FEFBF11000-0x000007FEFBF13000-memory.dmp

          Filesize

          8KB