tofsee | 579111fabbbb81860088616d9ec1028aac0a231278e352398af099cd0c578904

Analysis

max time kernel
150s
max time network
153s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
28/06/2026, 22:38

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General

Target
2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 13.6MB
Sample260628-2kvgrafx2s
SHA256 579111fabbbb81860088616d9ec1028aac0a231278e352398af099cd0c578904
MD5 51ad1c10e5c4c6ae23a24787adc30d6f
SHA1 371ae1c2f32d54e381d4d27bb56d10808b5a8909
SHA512 c5d5943ab75292b558addc63c3cb78843c2f2647c48096e50e71b8725da7b90684a35370482eeb91e498afe5bb52dfe476cd5721dc77d7654267138b6b24316d
SSDEEP 393216:iEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfh:iEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgb
TLSH
T197E6786EFA4903F301C1037A674E94C7BB0AD8B9636B56F0246D844F6267E2CA377791
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn
jotunheim.name

Signatures

Family: Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\wtajxcus = "0"	svchost.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4744	netsh.exe

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

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wtajxcus\ImagePath = "C:\\Windows\\SysWOW64\\wtajxcus\\sqfngwrn.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
4956	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4940	sqfngwrn.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4940 set thread context of 4956	4940	sqfngwrn.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1352	sc.exe
1828	sc.exe
4756	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5496	3472	WerFault.exe	88
3380	4940	WerFault.exe	100

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

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sqfngwrn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 4908	3472	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	89
PID 3472 wrote to memory of 1556	3472	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	91
PID 3472 wrote to memory of 1352	3472	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	93
PID 3472 wrote to memory of 1828	3472	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	95
PID 3472 wrote to memory of 4756	3472	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	98
PID 3472 wrote to memory of 4744	3472	2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	102
PID 4940 wrote to memory of 4956	4940	sqfngwrn.exe	101
PID 4940 wrote to memory of 4956	4940	sqfngwrn.exe	101

C:\Users\Admin\AppData\Local\Temp\2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wtajxcus\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sqfngwrn.exe" C:\Windows\SysWOW64\wtajxcus\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wtajxcus binPath= "C:\Windows\SysWOW64\wtajxcus\sqfngwrn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_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:1352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wtajxcus "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wtajxcus
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4756
- 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:4744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3472 -s 1448
  2⤵
  - Program crash
  PID:5496

C:\Windows\SysWOW64\wtajxcus\sqfngwrn.exe
C:\Windows\SysWOW64\wtajxcus\sqfngwrn.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-06-28_51ad1c10e5c4c6ae23a24787adc30d6f_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:4940
- 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:4956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4940 -s 572
  2⤵
  - Program crash
  PID:3380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3472 -ip 3472
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4940 -ip 4940
1⤵
PID:4304

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

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Downloads

sqfngwrn.exe

Path C:\Users\Admin\AppData\Local\Temp\sqfngwrn.exe
Size 11.1MB
SHA256 9bc5a8ec58fe798f6a66ec44f98de3677af038349353a39639426d43694247d0
MD5 caa1bac492693894b302331349b6e7b1
SHA1 66ae43eaed8ee400745b4a80ff819bd2c72f3492
SHA512 bd06d4853f030a13d9ea087448202d097adcbe6843b41f226589fb9b91b06520c0b96ffef3d7dd6df13d7f5cd763eae49b4b45b123b41c2fcbcc5deaa4e7a474
SSDEEP 196608:gEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRf5:gEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgz
TLSH
T133C6786EFA4903F341C1037A274E94C7BB0AD8B9636B56F0246D844F6267E2CA377791
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3472-0-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/3472-3-0x0000000003F00000-0x0000000003F13000-memory.dmp

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memory/3472-2-0x0000000002430000-0x0000000002530000-memory.dmp

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memory/3472-14-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/3472-15-0x0000000003F00000-0x0000000003F13000-memory.dmp

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memory/4940-7-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/4940-13-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/4956-9-0x0000000000F50000-0x0000000000F65000-memory.dmp

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memory/4956-16-0x0000000000F50000-0x0000000000F65000-memory.dmp

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memory/4956-17-0x0000000000F50000-0x0000000000F65000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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