Analysis

  • max time kernel
    4294100s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220310-en
  • submitted
    10-04-2022 13:19

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.

  • 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:1936
    • 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:1092
      • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"
        3⤵
          PID:1496

    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/1092-113-0x000000001D369000-0x000000001D371000-memory.dmp

      Filesize

      32KB

    • memory/1092-111-0x000000001D350000-0x000000001D359000-memory.dmp

      Filesize

      36KB

    • memory/1092-120-0x000000001D381000-0x000000001D391000-memory.dmp

      Filesize

      64KB

    • memory/1092-121-0x000000000210D000-0x0000000002111000-memory.dmp

      Filesize

      16KB

    • memory/1092-119-0x000000000210B000-0x000000000210D000-memory.dmp

      Filesize

      8KB

    • memory/1092-118-0x0000000002107000-0x0000000002109000-memory.dmp

      Filesize

      8KB

    • memory/1092-117-0x000000001D379000-0x000000001D381000-memory.dmp

      Filesize

      32KB

    • memory/1092-116-0x0000000002105000-0x0000000002107000-memory.dmp

      Filesize

      8KB

    • memory/1092-115-0x0000000002101000-0x0000000002103000-memory.dmp

      Filesize

      8KB

    • memory/1092-114-0x0000000002129000-0x000000000212D000-memory.dmp

      Filesize

      16KB

    • memory/1092-96-0x0000000000000000-mapping.dmp

    • memory/1092-112-0x000000001D361000-0x000000001D369000-memory.dmp

      Filesize

      32KB

    • memory/1092-110-0x000000000212D000-0x0000000002135000-memory.dmp

      Filesize

      32KB

    • memory/1092-122-0x0000000002111000-0x0000000002115000-memory.dmp

      Filesize

      16KB

    • memory/1092-102-0x00000000020FC000-0x00000000020FE000-memory.dmp

      Filesize

      8KB

    • memory/1092-103-0x0000000002103000-0x0000000002105000-memory.dmp

      Filesize

      8KB

    • memory/1092-108-0x0000000002121000-0x0000000002125000-memory.dmp

      Filesize

      16KB

    • memory/1092-109-0x0000000002125000-0x0000000002129000-memory.dmp

      Filesize

      16KB

    • memory/1092-106-0x00000000020FE000-0x0000000002100000-memory.dmp

      Filesize

      8KB

    • memory/1092-107-0x000000000211D000-0x0000000002121000-memory.dmp

      Filesize

      16KB

    • memory/1092-104-0x0000000002109000-0x000000000210B000-memory.dmp

      Filesize

      8KB

    • memory/1092-105-0x0000000002119000-0x000000000211D000-memory.dmp

      Filesize

      16KB

    • memory/1092-101-0x00000000020C6000-0x00000000020E5000-memory.dmp

      Filesize

      124KB

    • memory/1092-100-0x00000000020C0000-0x00000000020C2000-memory.dmp

      Filesize

      8KB

    • memory/1092-99-0x000007FEF2730000-0x000007FEF37C6000-memory.dmp

      Filesize

      16.6MB

    • memory/1496-138-0x0000000000000000-mapping.dmp

    • memory/1496-141-0x000007FEF2730000-0x000007FEF37C6000-memory.dmp

      Filesize

      16.6MB

    • memory/1936-72-0x000000001E871000-0x000000001E881000-memory.dmp

      Filesize

      64KB

    • memory/1936-75-0x0000000000AF7000-0x0000000000AF9000-memory.dmp

      Filesize

      8KB

    • memory/1936-87-0x000000001E859000-0x000000001E861000-memory.dmp

      Filesize

      32KB

    • memory/1936-88-0x000000001E861000-0x000000001E869000-memory.dmp

      Filesize

      32KB

    • memory/1936-89-0x0000000000B15000-0x0000000000B18000-memory.dmp

      Filesize

      12KB

    • memory/1936-90-0x0000000000AE9000-0x0000000000AEF000-memory.dmp

      Filesize

      24KB

    • memory/1936-91-0x000000001E861000-0x000000001E868000-memory.dmp

      Filesize

      28KB

    • memory/1936-92-0x0000000000ADB000-0x0000000000AE7000-memory.dmp

      Filesize

      48KB

    • memory/1936-93-0x000000001E862000-0x000000001E866000-memory.dmp

      Filesize

      16KB

    • memory/1936-94-0x0000000000B11000-0x0000000000B18000-memory.dmp

      Filesize

      28KB

    • memory/1936-95-0x0000000000ADC000-0x0000000000AE6000-memory.dmp

      Filesize

      40KB

    • memory/1936-85-0x0000000000B1D000-0x0000000000B25000-memory.dmp

      Filesize

      32KB

    • memory/1936-84-0x000000001E862000-0x000000001E866000-memory.dmp

      Filesize

      16KB

    • memory/1936-83-0x0000000000B15000-0x0000000000B18000-memory.dmp

      Filesize

      12KB

    • memory/1936-82-0x0000000000B19000-0x0000000000B1D000-memory.dmp

      Filesize

      16KB

    • memory/1936-81-0x0000000000B15000-0x0000000000B19000-memory.dmp

      Filesize

      16KB

    • memory/1936-80-0x0000000000B11000-0x0000000000B15000-memory.dmp

      Filesize

      16KB

    • memory/1936-78-0x0000000000AED000-0x0000000000AEF000-memory.dmp

      Filesize

      8KB

    • memory/1936-79-0x0000000000B13000-0x0000000000B18000-memory.dmp

      Filesize

      20KB

    • memory/1936-76-0x0000000000AEA000-0x0000000000AEF000-memory.dmp

      Filesize

      20KB

    • memory/1936-77-0x0000000000AFD000-0x0000000000B01000-memory.dmp

      Filesize

      16KB

    • memory/1936-86-0x000000001E851000-0x000000001E859000-memory.dmp

      Filesize

      32KB

    • memory/1936-74-0x0000000000AF5000-0x0000000000AF7000-memory.dmp

      Filesize

      8KB

    • memory/1936-73-0x0000000000AF1000-0x0000000000AF8000-memory.dmp

      Filesize

      28KB

    • memory/1936-54-0x0000000000AB0000-0x0000000000AB2000-memory.dmp

      Filesize

      8KB

    • memory/1936-71-0x0000000000AF1000-0x0000000000AF4000-memory.dmp

      Filesize

      12KB

    • memory/1936-69-0x0000000000AE9000-0x0000000000AEF000-memory.dmp

      Filesize

      24KB

    • memory/1936-70-0x0000000000B11000-0x0000000000B18000-memory.dmp

      Filesize

      28KB

    • memory/1936-68-0x000000001E869000-0x000000001E871000-memory.dmp

      Filesize

      32KB

    • memory/1936-67-0x0000000000B0D000-0x0000000000B11000-memory.dmp

      Filesize

      16KB

    • memory/1936-66-0x0000000000B09000-0x0000000000B0D000-memory.dmp

      Filesize

      16KB

    • memory/1936-65-0x000000001E849000-0x000000001E851000-memory.dmp

      Filesize

      32KB

    • memory/1936-63-0x0000000000B25000-0x0000000000B30000-memory.dmp

      Filesize

      44KB

    • memory/1936-64-0x000000001E840000-0x000000001E849000-memory.dmp

      Filesize

      36KB

    • memory/1936-62-0x0000000000B05000-0x0000000000B09000-memory.dmp

      Filesize

      16KB

    • memory/1936-61-0x0000000000AF1000-0x0000000000AF3000-memory.dmp

      Filesize

      8KB

    • memory/1936-59-0x0000000000AEE000-0x0000000000AF0000-memory.dmp

      Filesize

      8KB

    • memory/1936-60-0x0000000000B01000-0x0000000000B05000-memory.dmp

      Filesize

      16KB

    • memory/1936-58-0x0000000000AF3000-0x0000000000AF5000-memory.dmp

      Filesize

      8KB

    • memory/1936-57-0x0000000000AEC000-0x0000000000AEE000-memory.dmp

      Filesize

      8KB

    • memory/1936-56-0x0000000000AB6000-0x0000000000AD5000-memory.dmp

      Filesize

      124KB

    • memory/1936-55-0x000007FEF2730000-0x000007FEF37C6000-memory.dmp

      Filesize

      16.6MB