Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2022, 19:52

General

  • Target
    aef2a2e45deff880a7b64d6f79e0b9441916afaa230440d07ca28e5560ff0ea0.exe
  • Size 137KB
  • Sample221001-ylmlraechq
  • SHA256 aef2a2e45deff880a7b64d6f79e0b9441916afaa230440d07ca28e5560ff0ea0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • njrat

Version
  • 0.7d

Botnet
  • HacKed

C2
  • trung0979774557.homeip.net:5552

Mutex
  • 192936889c1ad904a258ba1ec13299b3

Attributes
  • reg_key

    192936889c1ad904a258ba1ec13299b3

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 8 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aef2a2e45deff880a7b64d6f79e0b9441916afaa230440d07ca28e5560ff0ea0.exe
    "C:\Users\Admin\AppData\Local\Temp\aef2a2e45deff880a7b64d6f79e0b9441916afaa230440d07ca28e5560ff0ea0.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4976
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        3⤵
        • Executes dropped EXE
        PID:2080
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        3⤵
        • Executes dropped EXE
        PID:3852
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:3768
        • C:\Users\Admin\AppData\Local\Temp\server.exe
          "C:\Users\Admin\AppData\Local\Temp\server.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4104
          • C:\Users\Admin\AppData\Local\Temp\server.exe
            C:\Users\Admin\AppData\Local\Temp\server.exe
            5⤵
            • Executes dropped EXE
            PID:3732
          • C:\Users\Admin\AppData\Local\Temp\server.exe
            C:\Users\Admin\AppData\Local\Temp\server.exe
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2752
            • C:\Windows\SysWOW64\netsh.exe
              netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
              6⤵
              • Modifies Windows Firewall
              PID:4400
          • C:\Users\Admin\AppData\Local\Temp\server.exe
            C:\Users\Admin\AppData\Local\Temp\server.exe
            5⤵
            • Executes dropped EXE
            PID:4892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        CSIDL_

        • Path C:\Users\Admin\AppData\Local\CSIDL_
        • Size 64KB
        • SHA256 6bc0a5d9f2b33cf7c5289a6c74fd311add64dd9ad7e674b1bbebc4df4fdb7890
        • MD5 SHA1 SHA512 SSDEEP

        CSIDL_X

        • Path C:\Users\Admin\AppData\Local\CSIDL_X
        • Size 64KB
        • SHA256 6bc0a5d9f2b33cf7c5289a6c74fd311add64dd9ad7e674b1bbebc4df4fdb7890
        • MD5 SHA1 SHA512 SSDEEP

        B.ex_

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.ex_
        • Size 64KB
        • SHA256 6bc0a5d9f2b33cf7c5289a6c74fd311add64dd9ad7e674b1bbebc4df4fdb7890
        • MD5 SHA1 SHA512 SSDEEP

        B.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        B.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        B.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        B.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        B.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\B.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        server.exe

        • Path C:\Users\Admin\AppData\Local\Temp\server.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        server.exe

        • Path C:\Users\Admin\AppData\Local\Temp\server.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        server.exe

        • Path C:\Users\Admin\AppData\Local\Temp\server.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        server.exe

        • Path C:\Users\Admin\AppData\Local\Temp\server.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        server.exe

        • Path C:\Users\Admin\AppData\Local\Temp\server.exe
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        system.pif

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startupx\system.pif
        • Size 40KB
        • SHA256 01715e84d2abaab8f786b656b17fc5ce653e7d0b42468abadff24c5d1d63ee6e
        • MD5 SHA1 SHA512 SSDEEP

        memory/1944-163-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/1944-146-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/2752-168-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/2752-165-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/3768-151-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/3768-147-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/3768-144-0x0000000000400000-0x000000000040C000-memory.dmp

        memory/4104-164-0x0000000005F60000-0x0000000005F64000-memory.dmp

        memory/4104-166-0x0000000074AA0000-0x0000000075051000-memory.dmp

        memory/4104-152-0x0000000074AA0000-0x0000000075051000-memory.dmp