Overview

overview

10

Static

static

10

8c31af322f...c3.exe

windows10-2004-x64

10

8c31af322f...c3.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/10/2026, 03:16

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General

  • Target
    8c31af322fb98542f8b413d7b53ff7f3fd96624fc801e7eabdb57b75edb2c4c3.exe
  • Size 12.4MB
  • Sample261004-dsmj4styh1
  • SHA256 8c31af322fb98542f8b413d7b53ff7f3fd96624fc801e7eabdb57b75edb2c4c3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutiontofseepersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • 43.231.4.7

  • lazystax.ru

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\8c31af322fb98542f8b413d7b53ff7f3fd96624fc801e7eabdb57b75edb2c4c3.exe
    "C:\Users\Admin\AppData\Local\Temp\8c31af322fb98542f8b413d7b53ff7f3fd96624fc801e7eabdb57b75edb2c4c3.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mhmrpaed\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:4080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oonteszc.exe" C:\Windows\SysWOW64\mhmrpaed\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5948
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create mhmrpaed binPath= "C:\Windows\SysWOW64\mhmrpaed\oonteszc.exe /d\"C:\Users\Admin\AppData\Local\Temp\8c31af322fb98542f8b413d7b53ff7f3fd96624fc801e7eabdb57b75edb2c4c3.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4936
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description mhmrpaed "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1304
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start mhmrpaed
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5396
    • 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:5032
  • C:\Windows\SysWOW64\mhmrpaed\oonteszc.exe
    C:\Windows\SysWOW64\mhmrpaed\oonteszc.exe /d"C:\Users\Admin\AppData\Local\Temp\8c31af322fb98542f8b413d7b53ff7f3fd96624fc801e7eabdb57b75edb2c4c3.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3464
    • 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:4128
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:4076

    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

          oonteszc.exe
          • Path C:\Users\Admin\AppData\Local\Temp\oonteszc.exe
          • Size 13.6MB
          • SHA256 b8a39213ef684c3da8ab1bc6b1f57c277175c6a3cf4cd95ab465c5bae870edc4
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/4128-4-0x00000000001B0000-0x00000000001C5000-memory.dmp
          Download

          memory/4128-7-0x00000000001B0000-0x00000000001C5000-memory.dmp
          Download

          memory/4128-8-0x00000000001B0000-0x00000000001C5000-memory.dmp
          Download

          memory/4128-9-0x00000000001B0000-0x00000000001C5000-memory.dmp
          Download

          memory/4128-10-0x00000000001B0000-0x00000000001C5000-memory.dmp
          Download