Overview

overview

10

Static

static

10

Server.exe

windows10-ltsc_2021-x64

10

Server.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/10/2026, 19:40

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General

  • Target
    Server.exe
  • Size 43KB
  • Sample261028-ydmxjsfx7n
  • SHA256 1833edd1de96a7e56223bb1e670c9cf259fd2583043f815d5945662294d3a4bc
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
luatoolsdiscoveryexecutionnjratpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • njrat

Version

  • Njrat 0.7 Golden By Hassan Amiri

Botnet

  • LuaTools

C2

  • gonisuki.ddns.net:5552

Mutex

  • Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • Family: njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • 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.

    persistenceprivilege_escalation
  • Executes dropped EXE 5 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:480
    • C:\Windows\Dllhost.exe
      "C:\Windows\Dllhost.exe"
      2⤵
      • Creates a file in the Startup directory
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2588
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2136
  • 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:4628
  • C:\Windows\Dllhost.exe
    "C:\Windows\Dllhost.exe" ..
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4312
  • 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:4912
  • 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:5384

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        Server.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Server.exe.log
        • Size 408B
        • SHA256 5fda32bcd2006c3a7b83d0be172d1aadfda31fabdd519a168f2cea676fba832c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        Server.exe
        • Path C:\Users\Admin\AppData\Local\Temp\Server.exe
        • Size 86KB
        • SHA256 90ba957765725993f5fdba386f81df3ab780bc7e70dc9f2b870dfcb50112dbf2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Dllhost.exe
        • Path C:\Windows\Dllhost.exe
        • Size 43KB
        • SHA256 1833edd1de96a7e56223bb1e670c9cf259fd2583043f815d5945662294d3a4bc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/480-0-0x0000000075441000-0x0000000075442000-memory.dmp
        Download

        memory/480-1-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download

        memory/480-12-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download

        memory/2588-11-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download

        memory/2588-13-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download

        memory/2588-21-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download

        memory/4628-19-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download

        memory/4628-23-0x0000000075440000-0x00000000759F1000-memory.dmp
        Download