tofsee | db347d34e860460334389a26fe8490c3814478eb4c243158012aeff3a8a91c57

Analysis

max time kernel
148s
max time network
154s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
30/09/2026, 22:24

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General

Target
2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Size 15.0MB
Sample260930-2bsa2a1tgs
SHA256 db347d34e860460334389a26fe8490c3814478eb4c243158012aeff3a8a91c57
MD5 331e8409cb47bd71b2f6ed34a5807ef1
SHA1 b48b7928d288119e1399799d7fd9bcd00fa8c561
SHA512 662b3f01cfc0e92f82447f839164dcee4d69ed92c6bafd2573afc00e335346dcca5560c5346ba6691bde1663cbff96bdfb9a63ff14f347cee15bb9e5823f0990
SSDEEP 6144:yHjBpYqdviTbDwkFyXapKagxexexexexexexexexexexexexexexexexexexexeq:63Yqd6B5w+
TLSH
T19DF6447392E13C44F6768E319E2F86E8361EFD919F1567EB12087A0B14711ADC1E2B1E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

nidavellir.top
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\dtsxggrx = "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
2876	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\dtsxggrx\ImagePath = "C:\\Windows\\SysWOW64\\dtsxggrx\\pufltezf.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5492	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3368	pufltezf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3368 set thread context of 5492	3368	pufltezf.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4264	sc.exe
6088	sc.exe
3720	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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

Windows Command Shell

T1059.003

pid	Process
248	cmd.exe
5916	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4128	568	WerFault.exe	87
3460	3368	WerFault.exe	99

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pufltezf.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 568 wrote to memory of 248	568	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	88
PID 568 wrote to memory of 5916	568	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	90
PID 568 wrote to memory of 4264	568	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	92
PID 568 wrote to memory of 6088	568	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	94
PID 568 wrote to memory of 3720	568	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	97
PID 568 wrote to memory of 2876	568	2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	100
PID 3368 wrote to memory of 5492	3368	pufltezf.exe	105
PID 3368 wrote to memory of 5492	3368	pufltezf.exe	105

C:\Users\Admin\AppData\Local\Temp\2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dtsxggrx\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pufltezf.exe" C:\Windows\SysWOW64\dtsxggrx\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dtsxggrx binPath= "C:\Windows\SysWOW64\dtsxggrx\pufltezf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dtsxggrx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:6088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dtsxggrx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3720
- 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:2876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 568 -s 936
  2⤵
  - Program crash
  PID:4128

C:\Windows\SysWOW64\dtsxggrx\pufltezf.exe
C:\Windows\SysWOW64\dtsxggrx\pufltezf.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-09-29_331e8409cb47bd71b2f6ed34a5807ef1_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3368
- 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:5492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3368 -s 584
  2⤵
  - Program crash
  PID:3460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 568 -ip 568
1⤵
PID:5456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3368 -ip 3368
1⤵
PID:4988

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

Indicator Removal

T1070

File Deletion

T1070.004

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

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Downloads

pufltezf.exe

Path C:\Users\Admin\AppData\Local\Temp\pufltezf.exe
Size 11.6MB
SHA256 ac432e639d1f3c7b86d5d8e2f092d341df7b45d25ff2c6777b46932937eb0cbc
MD5 d6860d304608c574bff99bd8179a8ee9
SHA1 f6135becde5b5a7da044274440230606d7d1ef77
SHA512 8cd3c454bcb21afbac55a6a4a93aa4f805ef21746bd175746fdef74f2cd3126eb5272ce452fe516005013f5d1cb63296e0a1f0ffd62948b1816326f5e01dcf32
SSDEEP 6144:dHjBpYqdviTbDwkFyXapKagxexexexexexexexexexexexexexexexexexexexeT:d3Yqd6B5wv
TLSH
T1A0C6447392E13C44F6768E319E2F86E8361EFD919F1567EB12087A0B14711ADC1E2B1E
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/568-0-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/568-2-0x0000000000710000-0x0000000000810000-memory.dmp

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memory/568-3-0x0000000000690000-0x00000000006A3000-memory.dmp

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memory/568-13-0x0000000000690000-0x00000000006A3000-memory.dmp

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memory/568-12-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/3368-7-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/3368-14-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/5492-9-0x0000000000980000-0x0000000000995000-memory.dmp

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memory/5492-15-0x0000000000980000-0x0000000000995000-memory.dmp

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memory/5492-16-0x0000000000980000-0x0000000000995000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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