Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    07/08/2026, 18:06

General

  • Target
    Server.exe
  • Size 37KB
  • Sample260807-wp32ss1cja
  • SHA256 2ad32b91bc213289ab7dc9fbd978a0d054c119238e9393b511f1f961bcd1490b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • njrat

Version
  • im523

Botnet
  • HacKedByViper

C2
  • viperalza7fgg-40476.portmap.host:40476

Mutex
  • 761a42b39d90bfdd9fb9f57269c50a4d

Attributes
  • reg_key

    761a42b39d90bfdd9fb9f57269c50a4d

  • splitter

    |'|'|

Signatures

  • Family: njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Creates a file in the Startup directory 1 TTPs 2 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Creates a file in the Startup directory
    • Adds Run key to start application
    • Drops autorun.inf file
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3564
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:1032
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe" ..
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4208

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        svchost.exe

        • Path F:\svchost.exe
        • Size 37KB
        • SHA256 2ad32b91bc213289ab7dc9fbd978a0d054c119238e9393b511f1f961bcd1490b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3564-0-0x0000000074631000-0x0000000074632000-memory.dmp

        memory/3564-1-0x0000000074630000-0x0000000074BE1000-memory.dmp

        memory/3564-14-0x0000000074630000-0x0000000074BE1000-memory.dmp

        memory/3564-17-0x0000000074630000-0x0000000074BE1000-memory.dmp

        memory/3564-18-0x0000000074630000-0x0000000074BE1000-memory.dmp

        memory/4208-12-0x0000000074630000-0x0000000074BE1000-memory.dmp

        memory/4208-13-0x0000000074630000-0x0000000074BE1000-memory.dmp

        memory/4208-16-0x0000000074630000-0x0000000074BE1000-memory.dmp