Overview

overview

10

Static

static

10

Serverr.exe

windows10-2004-x64

10

Serverr.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/08/2026, 11:03

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General

  • Target
    Serverr.exe
  • Size 23KB
  • Sample260825-m5z6ea1brd
  • SHA256 be1144450cb07ee7b334bb0c18c77512cdc2a6a6bf4a510fd8653328381ac141
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
bootkitdefense_evasiondiscoverynjratpersistenceprivilege_escalationtrojan

Malware Config

Signatures

  • Family: njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

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

  • 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 39 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Serverr.exe
    "C:\Users\Admin\AppData\Local\Temp\Serverr.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4324
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Serverr.exe" "Serverr.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2112
    • C:\Users\Admin\AppData\Local\Temp\tmp1F9F.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp1F9F.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      PID:3024
  • C:\Users\Admin\AppData\Local\Temp\Serverr.exe
    "C:\Users\Admin\AppData\Local\Temp\Serverr.exe" ..
    1⤵
    • System Location Discovery: System Language Discovery
    PID:976
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x000000000000049C 0x0000000000000494
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3224

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Persistence

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        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

        Pre-OS Boot

        1
        T1542

        Bootkit

        1
        T1542.003

        Privilege Escalation

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        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

        Pre-OS Boot

        1
        T1542

        Bootkit

        1
        T1542.003

        Credential Access

        Discovery

        System Information Discovery

        1
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        tmp1F9F.tmp.exe
        • Path C:\Users\Admin\AppData\Local\Temp\tmp1F9F.tmp.exe
        • Size 802KB
        • SHA256 68a2b9da01ab0d8999c490f680d3e3fa7f12c0ec80a5c1ecae51af6047663cf4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/976-2-0x0000000074E30000-0x0000000075451000-memory.dmp
        Download

        memory/976-3-0x0000000074E30000-0x0000000075451000-memory.dmp
        Download

        memory/976-6-0x0000000074E30000-0x0000000075451000-memory.dmp
        Download

        memory/3024-19-0x000001F553810000-0x000001F5538DE000-memory.dmp
        Download

        memory/4324-0-0x0000000001790000-0x00000000017A0000-memory.dmp
        Download

        memory/4324-1-0x0000000074E32000-0x0000000074E34000-memory.dmp
        Download

        memory/4324-4-0x0000000001790000-0x00000000017A0000-memory.dmp
        Download

        memory/4324-5-0x0000000074E32000-0x0000000074E34000-memory.dmp
        Download

        memory/4324-7-0x0000000074E30000-0x0000000075451000-memory.dmp
        Download

        memory/4324-8-0x0000000074E30000-0x0000000075451000-memory.dmp
        Download