tofsee | bffc6e8a4c1924c761a03c2e14345dd9e718ee7715112cbf805eacf9aaa528a5

Analysis

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

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/11/2026, 20:13

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General

Target
2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 13.7MB
Sample261104-yzv52sc19s
SHA256 bffc6e8a4c1924c761a03c2e14345dd9e718ee7715112cbf805eacf9aaa528a5
MD5 5617de380f8641482ca059c2a5ba73df
SHA1 2e4397509e230e7f6861139e5ab33cf268c47c45
SHA512 798923957f34e4afb8af7bf62ff3839e54f8934ba3ce917833d8bd980fffe88f408743c2d74dd030c18cfa91d91a6b17453b287334b5835328b37ef82679910d
SSDEEP 49152:Kp0855555555555555555555555555555555555555555555555555555555555Z:v
TLSH
T1FDE6C5816EF5A911F3F34A34497557A81A3FBCA7B830815D238036CE6CF66915EA07E3
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\cfjpqzyx = "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
3720	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\cfjpqzyx\ImagePath = "C:\\Windows\\SysWOW64\\cfjpqzyx\\ragrpew.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
2684	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
240	ragrpew.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 240 set thread context of 2684	240	ragrpew.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
3468	sc.exe
704	sc.exe
3500	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

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
5996	cmd.exe
1456	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2468	240	WerFault.exe	100
2616	4292	WerFault.exe	88

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ragrpew.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-03_5617de380f8641482ca059c2a5ba73df_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	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4292 wrote to memory of 5996	4292	2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	89
PID 4292 wrote to memory of 1456	4292	2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	91
PID 4292 wrote to memory of 3468	4292	2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	93
PID 4292 wrote to memory of 704	4292	2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	95
PID 4292 wrote to memory of 3500	4292	2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	98
PID 4292 wrote to memory of 3720	4292	2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	101
PID 240 wrote to memory of 2684	240	ragrpew.exe	104
PID 240 wrote to memory of 2684	240	ragrpew.exe	104

C:\Users\Admin\AppData\Local\Temp\2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-03_5617de380f8641482ca059c2a5ba73df_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cfjpqzyx\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ragrpew.exe" C:\Windows\SysWOW64\cfjpqzyx\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cfjpqzyx binPath= "C:\Windows\SysWOW64\cfjpqzyx\ragrpew.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-11-03_5617de380f8641482ca059c2a5ba73df_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:3468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cfjpqzyx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cfjpqzyx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3500
- 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:3720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 1088
  2⤵
  - Program crash
  PID:2616

C:\Windows\SysWOW64\cfjpqzyx\ragrpew.exe
C:\Windows\SysWOW64\cfjpqzyx\ragrpew.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-11-03_5617de380f8641482ca059c2a5ba73df_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:240
- 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:2684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 240 -s 592
  2⤵
  - Program crash
  PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 240 -ip 240
1⤵
PID:4736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4292 -ip 4292
1⤵
PID:1548

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

Service Stop

T1489

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Downloads

ragrpew.exe

Path C:\Users\Admin\AppData\Local\Temp\ragrpew.exe
Size 11.3MB
SHA256 102970f436dc3915aed2675e5831a70a92a3e8b8f81a99e9fc303f64a9438c53
MD5 0c7695cafd8e50ba822814cb49d11e51
SHA1 567a2917181cdaa1b395bedb77545a8d4e607fb9
SHA512 33f957aeca28753bf894cf15904c10b287d7ff429bd3658b37b02bf57cb3224b3e2b9c0b9a79f4b496417f4f13bf46a4e45a72046c6cd816952a956b30b5d4b8
SSDEEP 49152:Ip0855555555555555555555555555555555555555555555555555555555555t:B
TLSH
T1CDC6C5816EF5A911F3F34A34497557A81A3FBCA7B830815D238036CE6CF66915EA07E3
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/240-8-0x0000000000750000-0x0000000000850000-memory.dmp

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memory/240-14-0x0000000000710000-0x0000000000723000-memory.dmp

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memory/240-13-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/2684-9-0x0000000001000000-0x0000000001015000-memory.dmp

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memory/2684-12-0x0000000001000000-0x0000000001015000-memory.dmp

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memory/2684-16-0x0000000001000000-0x0000000001015000-memory.dmp

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memory/2684-17-0x0000000001000000-0x0000000001015000-memory.dmp

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memory/2684-18-0x0000000001000000-0x0000000001015000-memory.dmp

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memory/4292-1-0x0000000000730000-0x0000000000830000-memory.dmp

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memory/4292-2-0x0000000000710000-0x0000000000723000-memory.dmp

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memory/4292-15-0x0000000000400000-0x0000000000444000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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