Overview

overview

10

Static

static

10

ed66ad87ea...16.exe

windows10-2004-x64

10

ed66ad87ea...16.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/10/2026, 09:18

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General

  • Target
    ed66ad87eab5cf35261e658ffa1808ca0916968da97567d61692d6a4b8b1f416.exe
  • Size 11.2MB
  • Sample261020-k9nbasfx7s
  • SHA256 ed66ad87eab5cf35261e658ffa1808ca0916968da97567d61692d6a4b8b1f416
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutiontofseepersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • vanaheim.cn

  • jotunheim.name

Signatures

  • Family: Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    trojantofsee
  • Windows security bypass 2 TTPs 1 IoCs
    defense_evasiontrojan
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_evasion
  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

    persistence
  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Deletes itself 1 TTPs 1 IoCs
    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • 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
  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 9 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 WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed66ad87eab5cf35261e658ffa1808ca0916968da97567d61692d6a4b8b1f416.exe
    "C:\Users\Admin\AppData\Local\Temp\ed66ad87eab5cf35261e658ffa1808ca0916968da97567d61692d6a4b8b1f416.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bxqitfj\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5708
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gnmzhhpt.exe" C:\Windows\SysWOW64\bxqitfj\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:1788
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create bxqitfj binPath= "C:\Windows\SysWOW64\bxqitfj\gnmzhhpt.exe /d\"C:\Users\Admin\AppData\Local\Temp\ed66ad87eab5cf35261e658ffa1808ca0916968da97567d61692d6a4b8b1f416.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2728
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description bxqitfj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5272
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start bxqitfj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5840
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:5836
  • C:\Windows\SysWOW64\bxqitfj\gnmzhhpt.exe
    C:\Windows\SysWOW64\bxqitfj\gnmzhhpt.exe /d"C:\Users\Admin\AppData\Local\Temp\ed66ad87eab5cf35261e658ffa1808ca0916968da97567d61692d6a4b8b1f416.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4048
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:6140

    Network

          MITRE ATT&CK Enterprise v16

          Reconnaissance

          Resource Development

          Initial Access

          Execution

          Command and Scripting Interpreter

          1
          T1059

          Windows Command Shell

          1
          T1059.003

          System Services

          1
          T1569

          Service Execution

          1
          T1569.002

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Create or Modify System Process

          3
          T1543

          Windows Service

          3
          T1543.003

          Event Triggered Execution

          1
          T1546

          Netsh Helper DLL

          1
          T1546.007

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Create or Modify System Process

          3
          T1543

          Windows Service

          3
          T1543.003

          Event Triggered Execution

          1
          T1546

          Netsh Helper DLL

          1
          T1546.007

          Defense Evasion

          Impair Defenses

          2
          T1562

          Disable or Modify System Firewall

          1
          T1562.004

          Disable or Modify Tools

          1
          T1562.001

          Indicator Removal

          1
          T1070

          File Deletion

          1
          T1070.004

          Modify Registry

          2
          T1112

          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

          gnmzhhpt.exe
          • Path C:\Users\Admin\AppData\Local\Temp\gnmzhhpt.exe
          • Size 11.9MB
          • SHA256 77e70e9b95d25df72f23c40bd3ed9c46d2cd7939998d7b9c408decc3eac545d1
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/4048-4-0x0000000000640000-0x0000000000655000-memory.dmp
          Download

          memory/4048-7-0x0000000000640000-0x0000000000655000-memory.dmp
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          memory/4048-8-0x0000000000640000-0x0000000000655000-memory.dmp
          Download

          memory/4048-9-0x0000000000640000-0x0000000000655000-memory.dmp
          Download

          memory/4048-10-0x0000000000640000-0x0000000000655000-memory.dmp
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