tofsee | 68721c7804491d4e0910bcad046d138bedfcb458a470eb3f4351b55790cf3a38

Analysis

max time kernel
150s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 02:34

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General

Target
2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 12.9MB
Sample260803-c2vfmsba94
SHA256 68721c7804491d4e0910bcad046d138bedfcb458a470eb3f4351b55790cf3a38
MD5 6b19ec95b5bd52a0c896f8c5efa95393
SHA1 cee88008b4e934a74b9d5cf64fe7d5efe59051ee
SHA512 e8dd0c182a047c6d1aa2650da27f290b389207d7640fc3ea50bd068973c0e11c5c6b75064d5a26be340d127180f91d50fe7c65ab113d88ef348abc60827d5526
SSDEEP 49152:7p0Q55555555555555555555555555555555555555555555555555555555555V:2
TLSH
T1B0D6C5816EF5A911F3F34A34497557A81A3FBCA7B830815D238036CE6CF66915EA07E3
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\dmjnnrwa = "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
6012	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\dmjnnrwa\ImagePath = "C:\\Windows\\SysWOW64\\dmjnnrwa\\ombjcsnj.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
3128	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3472	ombjcsnj.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 3472 set thread context of 3128	3472	ombjcsnj.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
2136	sc.exe
2624	sc.exe
2596	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
2348	cmd.exe
1936	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
252	2448	WerFault.exe	88
108	3472	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ombjcsnj.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_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 2448 wrote to memory of 2348	2448	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	89
PID 2448 wrote to memory of 1936	2448	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	91
PID 2448 wrote to memory of 2136	2448	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	93
PID 2448 wrote to memory of 2624	2448	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	96
PID 2448 wrote to memory of 2596	2448	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	98
PID 2448 wrote to memory of 6012	2448	2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	101
PID 3472 wrote to memory of 3128	3472	ombjcsnj.exe	104
PID 3472 wrote to memory of 3128	3472	ombjcsnj.exe	104

C:\Users\Admin\AppData\Local\Temp\2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dmjnnrwa\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ombjcsnj.exe" C:\Windows\SysWOW64\dmjnnrwa\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dmjnnrwa binPath= "C:\Windows\SysWOW64\dmjnnrwa\ombjcsnj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_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:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dmjnnrwa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dmjnnrwa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2596
- 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:6012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 1092
  2⤵
  - Program crash
  PID:252

C:\Windows\SysWOW64\dmjnnrwa\ombjcsnj.exe
C:\Windows\SysWOW64\dmjnnrwa\ombjcsnj.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-03_6b19ec95b5bd52a0c896f8c5efa95393_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:3472
- 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:3128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3472 -s 592
  2⤵
  - Program crash
  PID:108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2448 -ip 2448
1⤵
PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3472 -ip 3472
1⤵
PID:896

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

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

ombjcsnj.exe

Path C:\Users\Admin\AppData\Local\Temp\ombjcsnj.exe
Size 10.5MB
SHA256 6dc7a25235b630c32ab193622367a72b8cc77915c5c02fb4ce2968eeb6492f6e
MD5 683f22d147903fa62abf224d44ec91e0
SHA1 5748b84ad2755fdc820fa9b3123375c8e2f2c064
SHA512 3a259bd4e3a87ed077b4cbc593fa0a32c2f82f8b1431fa9a19cb729ba58ccc96db437b5729a083615f63b0706a8791de2be6ba68c5d2b2155aad7275a12d99ff
SSDEEP 49152:Bp0Q55555555555555555555555555555555555555555555555555555555555X:g
TLSH
T1BEB6C5816EF59911F3F38A34497557A81A3FBCA7B830815D238036CE6CF66915EA07E3
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2448-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

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memory/2448-2-0x0000000000710000-0x0000000000723000-memory.dmp

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memory/2448-13-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/3128-9-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/3128-12-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/3128-15-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/3128-16-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/3128-17-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/3472-7-0x0000000000630000-0x0000000000730000-memory.dmp

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memory/3472-8-0x0000000000E70000-0x0000000000E83000-memory.dmp

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memory/3472-14-0x0000000000400000-0x0000000000444000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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