tofsee | f8149df2e82bc710b02a0b6174554c5ec8d97fc490c54be94d1f0fd3ea9bbcac

Analysis

max time kernel
150s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
06/08/2026, 01:17

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 10.3MB
Sample260806-bneycsv1f1
SHA256 f8149df2e82bc710b02a0b6174554c5ec8d97fc490c54be94d1f0fd3ea9bbcac
MD5 adeaba8915cff32627c56b12b1be2595
SHA1 14ba71309f6d13a61e03665f947217bd9fc6ad8a
SHA512 f583720abafa4f08e672f968613977a0eae5beb2cf3cb4133f11741080ed8dfe815a119a3b2eb003508eb9a3d8159f32a6fab05b38ffe338a9181e89e9f1c4b7
SSDEEP 196608:sEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRf4:sEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgi
TLSH
T162B6786EFA4903F341C1037A274E94C7BB0AD8B9636B56F0246D844F6267E2CA377791
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\qlxqwtek = "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
6132	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\qlxqwtek\ImagePath = "C:\\Windows\\SysWOW64\\qlxqwtek\\yhnywld.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
260	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5080	yhnywld.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 5080 set thread context of 260	5080	yhnywld.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3700	sc.exe
5060	sc.exe
3516	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
4532	cmd.exe
4660	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1152	3244	WerFault.exe	88
5016	5080	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	yhnywld.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-06_adeaba8915cff32627c56b12b1be2595_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	svchost.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	netsh.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3244 wrote to memory of 4660	3244	2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	89
PID 3244 wrote to memory of 4532	3244	2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	91
PID 3244 wrote to memory of 3700	3244	2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	93
PID 3244 wrote to memory of 5060	3244	2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	96
PID 3244 wrote to memory of 3516	3244	2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	98
PID 3244 wrote to memory of 6132	3244	2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	101
PID 5080 wrote to memory of 260	5080	yhnywld.exe	106
PID 5080 wrote to memory of 260	5080	yhnywld.exe	106

C:\Users\Admin\AppData\Local\Temp\2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-06_adeaba8915cff32627c56b12b1be2595_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qlxqwtek\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yhnywld.exe" C:\Windows\SysWOW64\qlxqwtek\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qlxqwtek binPath= "C:\Windows\SysWOW64\qlxqwtek\yhnywld.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-06_adeaba8915cff32627c56b12b1be2595_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:3700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qlxqwtek "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qlxqwtek
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3516
- 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:6132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 1084
  2⤵
  - Program crash
  PID:1152

C:\Windows\SysWOW64\qlxqwtek\yhnywld.exe
C:\Windows\SysWOW64\qlxqwtek\yhnywld.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-06_adeaba8915cff32627c56b12b1be2595_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:5080
- 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:260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5080 -s 588
  2⤵
  - Program crash
  PID:5016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3244 -ip 3244
1⤵
PID:2784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 5080 -ip 5080
1⤵
PID:2876

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

Replay Monitor

Loading Replay Monitor...

Downloads

yhnywld.exe

Path C:\Users\Admin\AppData\Local\Temp\yhnywld.exe
Size 13.0MB
SHA256 570b344eea1f439b5f4401820b897aa6ad940ef8d42f9701a9cf8f83d210319d
MD5 ce9dc9789013fde182b14ddb7fc130a1
SHA1 898a9ebe07c0988b6cfdafb9f7a780ea1796587e
SHA512 3e6ed3d35525e8f04a15a04ae786b3cf9dbb1443caf98a5319d8bd1ac46686d8cda8c615968fd32af8de83c14b3ea4830876b5f400773f4704f8e48f92e8a25b
SSDEEP 393216:bEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfx:bEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgL
TLSH
T14DD6786EFA4903F301C1037A674E94C7BB0AD8B9636B56F0246D844F6267E2CA377791
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/260-12-0x0000000000930000-0x0000000000945000-memory.dmp

Download

memory/260-14-0x0000000000930000-0x0000000000945000-memory.dmp

Download

memory/260-15-0x0000000000930000-0x0000000000945000-memory.dmp

Download

memory/3244-0-0x0000000000400000-0x000000000229F000-memory.dmp

Download

memory/3244-2-0x00000000023C0000-0x00000000024C0000-memory.dmp

Download

memory/3244-3-0x0000000003F00000-0x0000000003F13000-memory.dmp

Download

memory/3244-6-0x0000000000400000-0x000000000229F000-memory.dmp

Download

memory/3244-10-0x0000000003F00000-0x0000000003F13000-memory.dmp

Download

memory/3244-9-0x0000000000400000-0x000000000229F000-memory.dmp

Download

memory/5080-8-0x0000000000400000-0x000000000229F000-memory.dmp

Download

memory/5080-16-0x0000000000400000-0x000000000229F000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads