Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-04-2022 01:35

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 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 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:1796
    • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:524

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/524-92-0x0000000000BD6000-0x0000000000BF5000-memory.dmp

    Filesize

    124KB

  • memory/524-90-0x000007FEF36B0000-0x000007FEF4746000-memory.dmp

    Filesize

    16.6MB

  • memory/524-91-0x0000000000BD0000-0x0000000000BD2000-memory.dmp

    Filesize

    8KB

  • memory/524-87-0x0000000000000000-mapping.dmp

  • memory/1796-71-0x0000000002041000-0x0000000002045000-memory.dmp

    Filesize

    16KB

  • memory/1796-77-0x0000000002011000-0x000000000201B000-memory.dmp

    Filesize

    40KB

  • memory/1796-63-0x000000000202B000-0x000000000202D000-memory.dmp

    Filesize

    8KB

  • memory/1796-64-0x0000000002025000-0x0000000002028000-memory.dmp

    Filesize

    12KB

  • memory/1796-61-0x0000000002045000-0x0000000002048000-memory.dmp

    Filesize

    12KB

  • memory/1796-65-0x0000000002012000-0x0000000002017000-memory.dmp

    Filesize

    20KB

  • memory/1796-66-0x0000000002024000-0x000000000202C000-memory.dmp

    Filesize

    32KB

  • memory/1796-67-0x0000000002025000-0x0000000002027000-memory.dmp

    Filesize

    8KB

  • memory/1796-68-0x0000000002013000-0x000000000201F000-memory.dmp

    Filesize

    48KB

  • memory/1796-69-0x000000000202D000-0x0000000002031000-memory.dmp

    Filesize

    16KB

  • memory/1796-70-0x0000000002031000-0x0000000002035000-memory.dmp

    Filesize

    16KB

  • memory/1796-72-0x0000000002045000-0x0000000002049000-memory.dmp

    Filesize

    16KB

  • memory/1796-54-0x000007FEF36B0000-0x000007FEF4746000-memory.dmp

    Filesize

    16.6MB

  • memory/1796-73-0x0000000002049000-0x000000000204D000-memory.dmp

    Filesize

    16KB

  • memory/1796-74-0x0000000002021000-0x0000000002024000-memory.dmp

    Filesize

    12KB

  • memory/1796-75-0x000000000202D000-0x0000000002030000-memory.dmp

    Filesize

    12KB

  • memory/1796-76-0x0000000002028000-0x000000000202B000-memory.dmp

    Filesize

    12KB

  • memory/1796-62-0x0000000002029000-0x000000000202B000-memory.dmp

    Filesize

    8KB

  • memory/1796-78-0x0000000002031000-0x0000000002040000-memory.dmp

    Filesize

    60KB

  • memory/1796-79-0x000000000204D000-0x0000000002051000-memory.dmp

    Filesize

    16KB

  • memory/1796-80-0x0000000002051000-0x0000000002059000-memory.dmp

    Filesize

    32KB

  • memory/1796-81-0x000000000200B000-0x000000000200D000-memory.dmp

    Filesize

    8KB

  • memory/1796-83-0x0000000002014000-0x000000000201B000-memory.dmp

    Filesize

    28KB

  • memory/1796-82-0x000000000200E000-0x0000000002011000-memory.dmp

    Filesize

    12KB

  • memory/1796-84-0x000000001E850000-0x000000001E859000-memory.dmp

    Filesize

    36KB

  • memory/1796-85-0x0000000002026000-0x0000000002029000-memory.dmp

    Filesize

    12KB

  • memory/1796-86-0x0000000002041000-0x0000000002044000-memory.dmp

    Filesize

    12KB

  • memory/1796-60-0x0000000002025000-0x0000000002027000-memory.dmp

    Filesize

    8KB

  • memory/1796-59-0x0000000002023000-0x0000000002025000-memory.dmp

    Filesize

    8KB

  • memory/1796-58-0x0000000002021000-0x0000000002023000-memory.dmp

    Filesize

    8KB

  • memory/1796-57-0x000000000201C000-0x000000000201E000-memory.dmp

    Filesize

    8KB

  • memory/1796-56-0x0000000001FE6000-0x0000000002005000-memory.dmp

    Filesize

    124KB

  • memory/1796-55-0x0000000001FE0000-0x0000000001FE2000-memory.dmp

    Filesize

    8KB