Analysis

  • max time kernel
    89s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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#.

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

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 28 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:2184
    • C:\Users\Admin\AppData\Local\Temp\BAA73A9B35BF02D8C56A1286BCD2D714.exe
      C:\Users\Admin\AppData\Local\Temp\BAA73A9B35BF02D8C56A1286BCD2D714.exe
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1644
      • C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1428
        • 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:1516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    64KB

    MD5

    36fe3f3f72527621dc47e2b6acb0eac1

    SHA1

    c3fa9842ab6eb5bc764d9ca2ca6e05e02517879e

    SHA256

    bbcf9d4174847d06afd7221ce037e7da5264f390914351ed46a0433a4b67d676

    SHA512

    c736ab9fb8664ba8e83ebaa25591967224be81a2ac9f40292ceba4d3a60e214314c40357e923a69fd404ec7a7e299dc0d89dd8885fcae513ecd102ca9311ee38

  • 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\Windows\Start Menu\Programs\Startup\Sksewdjj.vbs

    Filesize

    83B

    MD5

    1bda7ff3ab57ee35f078aeb89c17198b

    SHA1

    dd1837e07192a78e9d21ec4055dc0dcd1ac9937a

    SHA256

    13abe05c8ea57d6976dd03a9089c744e1e156e54e4a0377580f5be181be94869

    SHA512

    f70f52ad8a7693318bb7332dd2c9a22f8707994fe77aeb15a5694b93df33960f4dc3806a32e137c7d1544a534816e75c1b7c8fab317bb04e59c1df6d7d028723

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

    Filesize

    1.1MB

    MD5

    8630fddbd1a5fcfd554e1c9491a842ba

    SHA1

    c56c633f080cfc3bab936a961e37b1fe93d9fa6d

    SHA256

    cea5cc90b812164f5832e7bdbf373ff61881db7d39e139e372ffa02b02646281

    SHA512

    52593852749e16afcb5cf78892a75d02f7f2c38c8a9067a0696b8e495cba4458bc99bdaf832118a5a9f5a07a1f6d7f9e469e794da78fbeea3d8db69f9515d8b7

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

    Filesize

    81KB

    MD5

    8803648b14a44b2bcc8a24c10673c587

    SHA1

    a2baf42f4561c52c72b4521f2a86b459d012e8fa

    SHA256

    ff8aa400a1a76be1210e462624e5d7a64fcc3fff48fbc121af8dd38719395ac4

    SHA512

    6d2de5695eebbff773efd0a085cb40bb7b7c34f0672e9381cdf156d7f304d35d125f580ec374fa4d1f3ba6c354f1a27c68b96afebba0e59df11d3f606c49da0e

  • memory/1428-968-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/1428-1906-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/1428-967-0x0000000000950000-0x0000000000A78000-memory.dmp

    Filesize

    1.2MB

  • memory/1428-1921-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/1428-971-0x0000000004BC0000-0x0000000004C00000-memory.dmp

    Filesize

    256KB

  • memory/1428-1905-0x00000000002C0000-0x00000000002C1000-memory.dmp

    Filesize

    4KB

  • memory/1428-1907-0x0000000004BC0000-0x0000000004C00000-memory.dmp

    Filesize

    256KB

  • memory/1516-1927-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1516-1928-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1516-1926-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1516-1931-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1516-1930-0x0000000074730000-0x0000000074E1E000-memory.dmp

    Filesize

    6.9MB

  • memory/1516-1929-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1516-1925-0x0000000074730000-0x0000000074E1E000-memory.dmp

    Filesize

    6.9MB

  • memory/1644-992-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1644-957-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/1644-969-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1644-990-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/1644-958-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1644-956-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB

  • memory/2184-28-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-40-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-54-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-56-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-60-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-62-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-66-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-68-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-64-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-58-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-52-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-50-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-42-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-937-0x0000000000360000-0x0000000000361000-memory.dmp

    Filesize

    4KB

  • memory/2184-939-0x0000000004370000-0x00000000043BC000-memory.dmp

    Filesize

    304KB

  • memory/2184-938-0x00000000005A0000-0x00000000005D6000-memory.dmp

    Filesize

    216KB

  • memory/2184-940-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2184-941-0x0000000004A90000-0x0000000004AD0000-memory.dmp

    Filesize

    256KB

  • memory/2184-952-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2184-48-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-46-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-44-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-38-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-22-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-24-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-26-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-36-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-0-0x00000000000A0000-0x00000000001C8000-memory.dmp

    Filesize

    1.2MB

  • memory/2184-32-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-34-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-30-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-8-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-10-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-20-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-18-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-12-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-16-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-14-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-6-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-5-0x00000000042D0000-0x0000000004369000-memory.dmp

    Filesize

    612KB

  • memory/2184-4-0x00000000042D0000-0x000000000436E000-memory.dmp

    Filesize

    632KB

  • memory/2184-3-0x00000000041E0000-0x000000000427E000-memory.dmp

    Filesize

    632KB

  • memory/2184-2-0x0000000004A90000-0x0000000004AD0000-memory.dmp

    Filesize

    256KB

  • memory/2184-1-0x00000000747B0000-0x0000000074E9E000-memory.dmp

    Filesize

    6.9MB