Overview

overview

10

Static

static

10

Server.exe

windows10-2004-x64

10

Server.exe

windows10-ltsc_2021-x64

10

Server.exe

windows11-21h2-x64

10

Server.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    07/08/2026, 18:46

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General

  • Target
    Server.exe
  • Size 37KB
  • Sample260807-xe1dlabj3z
  • SHA256 dcd8a11898d88fa582327920ed56cf2b7678350b1944df8bf927a8db09cc52a5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
hackedbyviperdefense_evasiondiscoverynjratpersistenceprivilege_escalationtrojan

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.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_evasion
  • 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 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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.

    persistenceprivilege_escalation
  • 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.

    discovery
  • 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:4448
    • 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:2476
  • 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:4772

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Replication Through Removable Media

        1
        T1091

        Execution

        Persistence

        Boot or Logon Autostart Execution

        2
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Create or Modify System Process

        1
        T1543

        Windows Service

        1
        T1543.003

        Event Triggered Execution

        1
        T1546

        Netsh Helper DLL

        1
        T1546.007

        Privilege Escalation

        Boot or Logon Autostart Execution

        2
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Create or Modify System Process

        1
        T1543

        Windows Service

        1
        T1543.003

        Event Triggered Execution

        1
        T1546

        Netsh Helper DLL

        1
        T1546.007

        Defense Evasion

        Impair Defenses

        1
        T1562

        Disable or Modify System Firewall

        1
        T1562.004

        Modify Registry

        1
        T1112

        Credential Access

        Discovery

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Replication Through Removable Media

        1
        T1091

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        Server.exe
        • Path C:\Users\Admin\AppData\Local\Temp\Server.exe
        • Size 37KB
        • SHA256 dcd8a11898d88fa582327920ed56cf2b7678350b1944df8bf927a8db09cc52a5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4448-0-0x0000000001A50000-0x0000000001A60000-memory.dmp
        Download

        memory/4448-1-0x00000000747F2000-0x00000000747F4000-memory.dmp
        Download

        memory/4448-8-0x0000000001A50000-0x0000000001A60000-memory.dmp
        Download

        memory/4448-9-0x00000000747F2000-0x00000000747F4000-memory.dmp
        Download

        memory/4448-12-0x00000000747F0000-0x0000000074DA1000-memory.dmp
        Download

        memory/4448-13-0x00000000747F0000-0x0000000074DA1000-memory.dmp
        Download

        memory/4772-7-0x00000000747F0000-0x0000000074DA1000-memory.dmp
        Download

        memory/4772-11-0x00000000747F0000-0x0000000074DA1000-memory.dmp
        Download