Overview

overview

10

Static

static

3

2026-10-01...ee.exe

windows10-2004-x64

10

2026-10-01...ee.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/10/2026, 01:04

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General

  • Target
    2026-10-01_d798c7c8379fb5428dffa13ef5b537a6_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 11.9MB
  • Sample261002-bfcs2a1z8j
  • SHA256 5431624b0c3597d83ac661c53278a8a1f31e58b94602d6d4ecdbe49e701cf60a
  • 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
  • Stops running service(s) 4 TTPs
    defense_evasionexecution
  • 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
  • Program crash 2 IoCs
  • 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\2026-10-01_d798c7c8379fb5428dffa13ef5b537a6_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-01_d798c7c8379fb5428dffa13ef5b537a6_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ztyertln\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:3244
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\coerfewa.exe" C:\Windows\SysWOW64\ztyertln\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:4984
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ztyertln binPath= "C:\Windows\SysWOW64\ztyertln\coerfewa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-10-01_d798c7c8379fb5428dffa13ef5b537a6_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4516
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ztyertln "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1544
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ztyertln
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5320
    • 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:4140
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 1092
      2⤵
      • Program crash
      PID:292
  • C:\Windows\SysWOW64\ztyertln\coerfewa.exe
    C:\Windows\SysWOW64\ztyertln\coerfewa.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-10-01_d798c7c8379fb5428dffa13ef5b537a6_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2856
    • 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:2096
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2856 -s 572
      2⤵
      • Program crash
      PID:3280
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2856 -ip 2856
    1⤵
      PID:5800
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2236 -ip 2236
      1⤵
        PID:3256

      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

            2
            T1569

            Service Execution

            2
            T1569.002

            Persistence

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Create or Modify System Process

            4
            T1543

            Windows Service

            4
            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

            4
            T1543

            Windows Service

            4
            T1543.003

            Event Triggered Execution

            1
            T1546

            Netsh Helper DLL

            1
            T1546.007

            Defense Evasion

            Impair Defenses

            3
            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

            Service Stop

            1
            T1489

            Replay Monitor

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            Downloads

            coerfewa.exe
            • Path C:\Users\Admin\AppData\Local\Temp\coerfewa.exe
            • Size 13.1MB
            • SHA256 4caee31407819828303c27d2ea4f59360e7176c9dac6d45d7fab2f87df9589bd
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/2096-8-0x00000000007B0000-0x00000000007C5000-memory.dmp
            Download

            memory/2096-13-0x00000000007B0000-0x00000000007C5000-memory.dmp
            Download

            memory/2096-14-0x00000000007B0000-0x00000000007C5000-memory.dmp
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            memory/2236-1-0x00000000025C0000-0x00000000026C0000-memory.dmp
            Download

            memory/2236-2-0x0000000002580000-0x0000000002593000-memory.dmp
            Download

            memory/2236-12-0x0000000002580000-0x0000000002593000-memory.dmp
            Download

            memory/2236-11-0x0000000000400000-0x0000000002291000-memory.dmp
            Download

            memory/2856-10-0x0000000000400000-0x0000000002291000-memory.dmp
            Download