Analysis

  • max time kernel
    81s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-01-2024 19:06

General

  • Target

    BAA73A9B35BF02D8C56A1286BCD2D714.exe

  • Size

    1.1MB

  • MD5

    baa73a9b35bf02d8c56a1286bcd2d714

  • SHA1

    a179259548f9e81b65126130342f5b076c8b8a77

  • SHA256

    14490c9c139e9bc984781f8143a571e1f1f140c69a7cd12c34fc0bf20abb0889

  • SHA512

    02f75dafbd6cabc107fd681d0cc65991b0a21b16b713fba77db4928e78f1da23474ddb4535f8280dc56186da90e41adc7ad8b10ffde2d0b18ff494273021d644

  • SSDEEP

    12288:DCwHtUz0qTqcXrwV+XinIBLAx9gKupscZ0PpHTzY8QGWlCL8K7XLlq95ZPFdmUG/:DCwHybsV/IOv6scZ0BzUfCz3+zsw8YS

Malware Config

Extracted

Family

blacknet

Version

v3.7.0 Public

Botnet

HacKed

C2

http://190.123.44.240

Mutex

BN[]

Attributes
  • antivm

    false

  • elevate_uac

    false

  • install_name

    WindowsUpdate.exe

  • splitter

    |BN|

  • start_name

    e162b1333458a713bc6916cc8ac4110c

  • startup

    true

  • usb_spread

    false

Signatures

  • BlackNET

    BlackNET is an open source remote access tool written in VB.NET.

  • BlackNET payload 1 IoCs
  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect ZGRat V1 34 IoCs
  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BAA73A9B35BF02D8C56A1286BCD2D714.exe
    "C:\Users\Admin\AppData\Local\Temp\BAA73A9B35BF02D8C56A1286BCD2D714.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\BAA73A9B35BF02D8C56A1286BCD2D714.exe
      C:\Users\Admin\AppData\Local\Temp\BAA73A9B35BF02D8C56A1286BCD2D714.exe
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
        3⤵
        • Executes dropped EXE
        PID:924
        • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1232

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\BAA73A9B35BF02D8C56A1286BCD2D714.exe.log

    Filesize

    927B

    MD5

    4a911455784f74e368a4c2c7876d76f4

    SHA1

    a1700a0849ffb4f26671eb76da2489946b821c34

    SHA256

    264098e15b5b33d425f3b76e45b7976b58f917048125041135f7e60d8151108c

    SHA512

    4617591400409e1930195795a55e20d5f063042bb3e9fd1955099066e507b6ac8a1e3ae54cc42418e2639149b31bf7e58cd5743670d9030a15e29f14d813815d

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

    Filesize

    1.1MB

    MD5

    baa73a9b35bf02d8c56a1286bcd2d714

    SHA1

    a179259548f9e81b65126130342f5b076c8b8a77

    SHA256

    14490c9c139e9bc984781f8143a571e1f1f140c69a7cd12c34fc0bf20abb0889

    SHA512

    02f75dafbd6cabc107fd681d0cc65991b0a21b16b713fba77db4928e78f1da23474ddb4535f8280dc56186da90e41adc7ad8b10ffde2d0b18ff494273021d644

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

    Filesize

    1.1MB

    MD5

    4c06e6c292352da27872effe0c7d84ba

    SHA1

    d7ba8cfcf857057b40ddba001100a0d60ca934d0

    SHA256

    c51ff4b3e7a2b6b88c54063cba7c762c324e7e890125c3b264cb1063dd9aa659

    SHA512

    c4d68596fabeff859418c17634fbd4065fc57fb3c7475e791d8b0d27ff16a7798c74daf157ef67662f8fb332c5453463983beb35fbeb073929b6ec58529152f9

  • memory/8-30-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-4-0x0000000005710000-0x00000000057AE000-memory.dmp

    Filesize

    632KB

  • memory/8-26-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-3-0x0000000005650000-0x00000000056EE000-memory.dmp

    Filesize

    632KB

  • memory/8-18-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-8-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-12-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-20-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-22-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-28-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-32-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-34-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-38-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-46-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-44-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-42-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-50-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-58-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-56-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-62-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-60-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-64-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-66-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-54-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-52-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-48-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-68-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-40-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-36-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-1-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/8-2-0x0000000003180000-0x0000000003190000-memory.dmp

    Filesize

    64KB

  • memory/8-24-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-0-0x0000000000BB0000-0x0000000000CD8000-memory.dmp

    Filesize

    1.2MB

  • memory/8-16-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-14-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-10-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-5-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-6-0x0000000005710000-0x00000000057A9000-memory.dmp

    Filesize

    612KB

  • memory/8-937-0x00000000057F0000-0x00000000057F1000-memory.dmp

    Filesize

    4KB

  • memory/8-938-0x0000000005860000-0x0000000005896000-memory.dmp

    Filesize

    216KB

  • memory/8-939-0x00000000058D0000-0x000000000591C000-memory.dmp

    Filesize

    304KB

  • memory/8-940-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/8-941-0x0000000003180000-0x0000000003190000-memory.dmp

    Filesize

    64KB

  • memory/8-942-0x0000000006280000-0x0000000006824000-memory.dmp

    Filesize

    5.6MB

  • memory/8-950-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/1232-976-0x00000000050B0000-0x00000000050C0000-memory.dmp

    Filesize

    64KB

  • memory/1232-975-0x00000000050B0000-0x00000000050C0000-memory.dmp

    Filesize

    64KB

  • memory/1232-974-0x00000000050B0000-0x00000000050C0000-memory.dmp

    Filesize

    64KB

  • memory/1232-978-0x00000000050B0000-0x00000000050C0000-memory.dmp

    Filesize

    64KB

  • memory/1232-977-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/1232-973-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/1992-952-0x00000000053F0000-0x0000000005482000-memory.dmp

    Filesize

    584KB

  • memory/1992-957-0x0000000008610000-0x0000000008676000-memory.dmp

    Filesize

    408KB

  • memory/1992-956-0x0000000005310000-0x0000000005320000-memory.dmp

    Filesize

    64KB

  • memory/1992-948-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB

  • memory/1992-970-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/1992-953-0x0000000005310000-0x0000000005320000-memory.dmp

    Filesize

    64KB

  • memory/1992-955-0x00000000054F0000-0x0000000005546000-memory.dmp

    Filesize

    344KB

  • memory/1992-949-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

  • memory/1992-951-0x0000000005350000-0x00000000053EC000-memory.dmp

    Filesize

    624KB

  • memory/1992-969-0x0000000005310000-0x0000000005320000-memory.dmp

    Filesize

    64KB

  • memory/1992-954-0x00000000052E0000-0x00000000052EA000-memory.dmp

    Filesize

    40KB