Analysis

  • max time kernel
    99s
  • max time network
    98s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 16:28

General

  • Target

    c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe

  • Size

    179KB

  • MD5

    c89be917eb11b5f09561177b4cfddff5

  • SHA1

    61f7e9a65430c732bb145864fb5ea40fddbde35e

  • SHA256

    c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671

  • SHA512

    6717283fd645873a042f63ea95ba01455d91a046317c0011a387bbfd352b69e71a53cb15811d0ff3ac2c7682102961da68c6fc7aa729a8fc2196e9af139ce5af

  • SSDEEP

    3072:zobMNvy29G/P/XP3ue33nev2W33PXPmG+ePu23PfmmO3XePmmPm3PeP3uPvu/Ovi:zobwhVi2nh3HETytaoRFYBiXB

Score
10/10

Malware Config

Extracted

Family

blacknet

Version

v3.7.0 Public

Botnet

HacKed

C2

http://194.33.45.112

Mutex

BN[]

Attributes
  • antivm

    false

  • elevate_uac

    false

  • install_name

    WindowsUpdate.exe

  • splitter

    |BN|

  • start_name

    e162b1333458a713bc6916cc8ac4110c

  • startup

    false

  • usb_spread

    false

Signatures

  • BlackNET

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

  • BlackNET payload 6 IoCs
  • Contains code to disable Windows Defender 6 IoCs

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

  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe
    "C:\Users\Admin\AppData\Local\Temp\c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1060
    • C:\Users\Admin\AppData\Local\Temp\c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe
      "C:\Users\Admin\AppData\Local\Temp\c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ping 1.1.1.1 -n 5 -w 5000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe"
        3⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:880
        • C:\Windows\SysWOW64\PING.EXE
          ping 1.1.1.1 -n 5 -w 5000
          4⤵
          • Runs ping.exe
          PID:292
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\pOwERsHeLl.exe
      "pOwERsHeLl.exe" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\c138d8e3110237ad4ed5dba3308a2e8a4eb685f84a55043354554b1127776671.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\startup.exe'
      2⤵
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/292-78-0x0000000000000000-mapping.dmp
  • memory/880-76-0x0000000000000000-mapping.dmp
  • memory/1060-72-0x0000000004CA5000-0x0000000004CB6000-memory.dmp
    Filesize

    68KB

  • memory/1060-55-0x0000000075021000-0x0000000075023000-memory.dmp
    Filesize

    8KB

  • memory/1060-56-0x0000000000370000-0x0000000000386000-memory.dmp
    Filesize

    88KB

  • memory/1060-54-0x0000000000300000-0x0000000000334000-memory.dmp
    Filesize

    208KB

  • memory/1060-75-0x0000000004CA5000-0x0000000004CB6000-memory.dmp
    Filesize

    68KB

  • memory/1728-58-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1728-63-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1728-66-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1728-68-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1728-64-0x000000000041756E-mapping.dmp
  • memory/1728-62-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1728-60-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1728-77-0x0000000004BC7000-0x0000000004BD8000-memory.dmp
    Filesize

    68KB

  • memory/1728-57-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/1984-69-0x0000000000000000-mapping.dmp
  • memory/1984-73-0x000000006E5C0000-0x000000006EB6B000-memory.dmp
    Filesize

    5.7MB

  • memory/1984-74-0x000000006E5C0000-0x000000006EB6B000-memory.dmp
    Filesize

    5.7MB