Overview

overview

10

Static

static

3

2026-04-15...ee.exe

windows10-2004-x64

10

2026-04-15...ee.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    15/04/2026, 23:04

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General

  • Target
    2026-04-15_7f8e906f4218c99d63729e4943692ce6_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe
  • Size 11.4MB
  • Sample260415-22d64adz3z
  • SHA256 2e5057798c7986c5a5a7487fec0f5dda80145fdbf23eb611fc7663a12994afa5
  • 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
  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Deletes itself 1 IoCs
  • 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
  • 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\2026-04-15_7f8e906f4218c99d63729e4943692ce6_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-15_7f8e906f4218c99d63729e4943692ce6_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fvxcyoo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2884
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lbxmhzxf.exe" C:\Windows\SysWOW64\fvxcyoo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2380
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create fvxcyoo binPath= "C:\Windows\SysWOW64\fvxcyoo\lbxmhzxf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-04-15_7f8e906f4218c99d63729e4943692ce6_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3780
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description fvxcyoo "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1532
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start fvxcyoo
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1880
    • 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:4260
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1428 -s 1036
      2⤵
      • Program crash
      PID:4660
  • C:\Windows\SysWOW64\fvxcyoo\lbxmhzxf.exe
    C:\Windows\SysWOW64\fvxcyoo\lbxmhzxf.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-04-15_7f8e906f4218c99d63729e4943692ce6_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3112
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4896
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 508
      2⤵
      • Program crash
      PID:3388
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1428 -ip 1428
    1⤵
      PID:2148
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3112 -ip 3112
      1⤵
        PID:2184

      Network

            MITRE ATT&CK Enterprise v16

            Reconnaissance

            Resource Development

            Initial Access

            Execution

            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

            2
            T1562

            Disable or Modify System Firewall

            1
            T1562.004

            Modify Registry

            1
            T1112

            Credential Access

            Discovery

            Query Registry

            1
            T1012

            System Information Discovery

            2
            T1082

            System Location Discovery

            1
            T1614

            System Language Discovery

            1
            T1614.001

            Lateral Movement

            Collection

            Command and Control

            Exfiltration

            Impact

            Service Stop

            1
            T1489

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            Downloads

            lbxmhzxf.exe
            • Path C:\Users\Admin\AppData\Local\Temp\lbxmhzxf.exe
            • Size 14.2MB
            • SHA256 7030c399e8e21fadfcd3fef9c8002ad1152ad9fed748b6982ce4195563f0de48
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/1428-1-0x0000000000920000-0x0000000000A20000-memory.dmp
            Download

            memory/1428-2-0x0000000000840000-0x0000000000853000-memory.dmp
            Download

            memory/1428-7-0x0000000000840000-0x0000000000853000-memory.dmp
            Download

            memory/3112-9-0x0000000000880000-0x0000000000980000-memory.dmp
            Download

            memory/4896-10-0x0000000000530000-0x0000000000545000-memory.dmp
            Download

            memory/4896-12-0x0000000000530000-0x0000000000545000-memory.dmp
            Download

            memory/4896-14-0x0000000000530000-0x0000000000545000-memory.dmp
            Download