Analysis

  • max time kernel
    24s
  • max time network
    173s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    29-04-2022 19:37

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
  • 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:1944
    • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
        PID:1316
        • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"
          3⤵
            PID:1592
            • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
              "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
              4⤵
                PID:776

        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/1316-93-0x0000000000AB9000-0x0000000000ABC000-memory.dmp

          Filesize

          12KB

        • memory/1316-91-0x0000000000ADF000-0x0000000000AE3000-memory.dmp

          Filesize

          16KB

        • memory/1316-85-0x0000000000AD5000-0x0000000000AD9000-memory.dmp

          Filesize

          16KB

        • memory/1316-84-0x0000000000AD1000-0x0000000000AD5000-memory.dmp

          Filesize

          16KB

        • memory/1316-89-0x0000000000AAB000-0x0000000000AB6000-memory.dmp

          Filesize

          44KB

        • memory/1316-99-0x0000000000AB6000-0x0000000000ABA000-memory.dmp

          Filesize

          16KB

        • memory/1316-87-0x0000000000AC7000-0x0000000000ACA000-memory.dmp

          Filesize

          12KB

        • memory/1316-101-0x0000000000AB0000-0x0000000000AB6000-memory.dmp

          Filesize

          24KB

        • memory/1316-102-0x0000000000AC8000-0x0000000000ACC000-memory.dmp

          Filesize

          16KB

        • memory/1316-100-0x0000000000AAB000-0x0000000000AAE000-memory.dmp

          Filesize

          12KB

        • memory/1316-98-0x0000000000ABC000-0x0000000000ABF000-memory.dmp

          Filesize

          12KB

        • memory/1316-86-0x0000000000AB9000-0x0000000000ABC000-memory.dmp

          Filesize

          12KB

        • memory/1316-90-0x0000000000ADB000-0x0000000000ADF000-memory.dmp

          Filesize

          16KB

        • memory/1316-83-0x0000000000AC1000-0x0000000000AC4000-memory.dmp

          Filesize

          12KB

        • memory/1316-92-0x0000000000AAC000-0x0000000000AB6000-memory.dmp

          Filesize

          40KB

        • memory/1316-94-0x0000000000AC1000-0x0000000000AC4000-memory.dmp

          Filesize

          12KB

        • memory/1316-97-0x0000000000AC1000-0x0000000000AD4000-memory.dmp

          Filesize

          76KB

        • memory/1316-95-0x0000000000AAE000-0x0000000000AB6000-memory.dmp

          Filesize

          32KB

        • memory/1316-76-0x0000000000000000-mapping.dmp

        • memory/1316-96-0x0000000000ABB000-0x0000000000ABF000-memory.dmp

          Filesize

          16KB

        • memory/1316-88-0x0000000000AC1000-0x0000000000AC4000-memory.dmp

          Filesize

          12KB

        • memory/1316-79-0x000007FEF32C0000-0x000007FEF4356000-memory.dmp

          Filesize

          16.6MB

        • memory/1316-81-0x0000000000A86000-0x0000000000AA5000-memory.dmp

          Filesize

          124KB

        • memory/1316-82-0x0000000000ACD000-0x0000000000AD1000-memory.dmp

          Filesize

          16KB

        • memory/1592-103-0x0000000000000000-mapping.dmp

        • memory/1592-106-0x000007FEF32C0000-0x000007FEF4356000-memory.dmp

          Filesize

          16.6MB

        • memory/1592-107-0x0000000000AD6000-0x0000000000AF5000-memory.dmp

          Filesize

          124KB

        • memory/1944-71-0x00000000006E7000-0x00000000006EA000-memory.dmp

          Filesize

          12KB

        • memory/1944-67-0x00000000006F1000-0x00000000006F4000-memory.dmp

          Filesize

          12KB

        • memory/1944-64-0x0000000000705000-0x0000000000709000-memory.dmp

          Filesize

          16KB

        • memory/1944-57-0x00000000006ED000-0x00000000006F1000-memory.dmp

          Filesize

          16KB

        • memory/1944-58-0x00000000006F1000-0x00000000006F5000-memory.dmp

          Filesize

          16KB

        • memory/1944-75-0x00000000006F1000-0x0000000000700000-memory.dmp

          Filesize

          60KB

        • memory/1944-74-0x00000000006ED000-0x00000000006F1000-memory.dmp

          Filesize

          16KB

        • memory/1944-73-0x00000000006EF000-0x0000000000700000-memory.dmp

          Filesize

          68KB

        • memory/1944-54-0x000007FEF32C0000-0x000007FEF4356000-memory.dmp

          Filesize

          16.6MB

        • memory/1944-72-0x00000000006ED000-0x0000000000700000-memory.dmp

          Filesize

          76KB

        • memory/1944-59-0x00000000006F5000-0x00000000006F9000-memory.dmp

          Filesize

          16KB

        • memory/1944-70-0x00000000006E1000-0x00000000006E4000-memory.dmp

          Filesize

          12KB

        • memory/1944-66-0x0000000000709000-0x000000000070D000-memory.dmp

          Filesize

          16KB

        • memory/1944-69-0x0000000000709000-0x000000000070C000-memory.dmp

          Filesize

          12KB

        • memory/1944-68-0x000000000070D000-0x0000000000715000-memory.dmp

          Filesize

          32KB

        • memory/1944-65-0x00000000006CB000-0x00000000006DF000-memory.dmp

          Filesize

          80KB

        • memory/1944-63-0x00000000006F4000-0x0000000000700000-memory.dmp

          Filesize

          48KB

        • memory/1944-62-0x0000000000701000-0x0000000000705000-memory.dmp

          Filesize

          16KB

        • memory/1944-56-0x00000000006A6000-0x00000000006C5000-memory.dmp

          Filesize

          124KB

        • memory/1944-55-0x000007FEFC1F1000-0x000007FEFC1F3000-memory.dmp

          Filesize

          8KB

        • memory/1944-61-0x00000000006FD000-0x0000000000701000-memory.dmp

          Filesize

          16KB

        • memory/1944-60-0x00000000006EF000-0x00000000006F2000-memory.dmp

          Filesize

          12KB