tofsee | 31ea5431dde3dc65c55e966a59f6af857efadb483467f921c1d20a899458a078

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
23/08/2026, 04:28

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General

Target
2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 14.0MB
Sample260823-e3pmwsej7x
SHA256 31ea5431dde3dc65c55e966a59f6af857efadb483467f921c1d20a899458a078
MD5 972e30b2ac610a7521aecd26412ce7f3
SHA1 513825e44603406e95a29ec5891825ecbf1e7890
SHA512 e0a82adf264225c45c6bc4b8d07311337ac3c1cc028dd6a8cbca8346988b10acf82807c68695524a7c9cd77f837e554238790b9a16663ff5b19569504bbff8ec
SSDEEP 3072:a+y2dpldAKbL1HF/r0gEfoh8S73sXqsMfjyLaW/dR83KU2behIATINbpuQy7Zv8I:y2Z5xl/rxKS7SMfmLaq6kaKASuQy1
TLSH
T1B5E62B3B05A40667D0340BBE37FC3F049EEF86A4E26D247B1535A9E8C9075A1ACDE45B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7
lazystax.ru

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2036	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\yevbgoqs\ImagePath = "C:\\Windows\\SysWOW64\\yevbgoqs\\rauzrqlh.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
5252	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2200	rauzrqlh.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 2200 set thread context of 5252	2200	rauzrqlh.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
3332	sc.exe
2816	sc.exe
4996	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
3568	cmd.exe
1188	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
996	6004	WerFault.exe	85
3648	2200	WerFault.exe	98

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rauzrqlh.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	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 6004 wrote to memory of 3568	6004	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	87
PID 6004 wrote to memory of 1188	6004	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	89
PID 6004 wrote to memory of 3332	6004	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	91
PID 6004 wrote to memory of 2816	6004	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	93
PID 6004 wrote to memory of 4996	6004	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	96
PID 6004 wrote to memory of 2036	6004	2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	101
PID 2200 wrote to memory of 5252	2200	rauzrqlh.exe	105
PID 2200 wrote to memory of 5252	2200	rauzrqlh.exe	105

C:\Users\Admin\AppData\Local\Temp\2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-22_972e30b2ac610a7521aecd26412ce7f3_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yevbgoqs\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rauzrqlh.exe" C:\Windows\SysWOW64\yevbgoqs\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yevbgoqs binPath= "C:\Windows\SysWOW64\yevbgoqs\rauzrqlh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-22_972e30b2ac610a7521aecd26412ce7f3_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:3332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yevbgoqs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yevbgoqs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4996
- 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:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 6004 -s 1232
  2⤵
  - Program crash
  PID:996

C:\Windows\SysWOW64\yevbgoqs\rauzrqlh.exe
C:\Windows\SysWOW64\yevbgoqs\rauzrqlh.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-22_972e30b2ac610a7521aecd26412ce7f3_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:2200
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 508
  2⤵
  - Program crash
  PID:3648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 6004 -ip 6004
1⤵
PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2200 -ip 2200
1⤵
PID:4912

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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

rauzrqlh.exe

Path C:\Users\Admin\AppData\Local\Temp\rauzrqlh.exe
Size 10.5MB
SHA256 9ea73820bd17b829c54d2d9785d96c7c11490de321ba7fa040df60ff9ee9660e
MD5 a141000d437b8b6db6773e093b7092f3
SHA1 0c489f153a3b1b8533a9dcb4e29755a688aa47ee
SHA512 b7fd1c4aeb5710922449914b2bac05cf9dd8a6b33b77903a23dfee9c2b83127367d312fa147f3ace3b58e5c7e04186ac937bd5ef0fe965bc89e991cee256e42b
SSDEEP 3072:T+y2dpldAKbL1HF/r0gEfoh8S73sXqsMfjyLaW/dR83KU2behIATINbpuQy7Zv8L:52Z5xl/rxKS7SMfmLaq6kaKASuQy1
TLSH
T1F7B62B3B05A40667D0340BBE37FC3F049EEF86A4E26D247B1535A9E8C9075A1ACDA45F
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2200-7-0x0000000000590000-0x0000000000690000-memory.dmp

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memory/2200-16-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/5252-9-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

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memory/5252-14-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

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memory/5252-15-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

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memory/6004-2-0x0000000000590000-0x00000000005A3000-memory.dmp

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memory/6004-1-0x00000000006B0000-0x00000000007B0000-memory.dmp

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memory/6004-8-0x00000000006B0000-0x00000000007B0000-memory.dmp

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memory/6004-11-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/6004-12-0x0000000000590000-0x00000000005A3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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