tofsee | e9da9bf62684773f1260700315702d57606b2d137b9a9cd7a8a892eeaf514af1

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
11/11/2026, 00:04

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General

Target
2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Size 11.3MB
Sample261111-acwlassv8m
SHA256 e9da9bf62684773f1260700315702d57606b2d137b9a9cd7a8a892eeaf514af1
MD5 2b009fd7efd1e865a8a7b581239647c3
SHA1 f46d71badd471ea11f716dfacd27f9426a0eb72a
SHA512 54df1f10f281ae9cadf5a4c6fa18ffe9e5158ad400c67c1d3e782ea2f30d2985d72c61bbb2677492ee6fd7c680b61bc7e2cce075d469c20dde3a58db3410f6f0
SSDEEP 49152:YFjs1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l13:m
TLSH
T109C61730BBFE554AFAF35B3095369AC85A7BBC43F931825E20501D1B1D72E909D62B23
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru
lakeflex.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
5776	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\dicpbyyb\ImagePath = "C:\\Windows\\SysWOW64\\dicpbyyb\\fkukyd.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-1-5-21-681733028-2344970462-962213935-1000\Control Panel\International\Geo\Nation	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.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
2372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1792	fkukyd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1792 set thread context of 2372	1792	fkukyd.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2356	sc.exe
2360	sc.exe
5308	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
3104	cmd.exe
556	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1088	3800	WerFault.exe	83
2708	1792	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	cmd.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	fkukyd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.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

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 3104	3800	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	84
PID 3800 wrote to memory of 556	3800	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	86
PID 3800 wrote to memory of 2356	3800	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	88
PID 3800 wrote to memory of 2360	3800	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	91
PID 3800 wrote to memory of 5308	3800	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	93
PID 3800 wrote to memory of 5776	3800	2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	99
PID 1792 wrote to memory of 2372	1792	fkukyd.exe	103
PID 1792 wrote to memory of 2372	1792	fkukyd.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-09_2b009fd7efd1e865a8a7b581239647c3_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dicpbyyb\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fkukyd.exe" C:\Windows\SysWOW64\dicpbyyb\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dicpbyyb binPath= "C:\Windows\SysWOW64\dicpbyyb\fkukyd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-11-09_2b009fd7efd1e865a8a7b581239647c3_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:2356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dicpbyyb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dicpbyyb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5308
- 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:5776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 1036
  2⤵
  - Program crash
  PID:1088

C:\Windows\SysWOW64\dicpbyyb\fkukyd.exe
C:\Windows\SysWOW64\dicpbyyb\fkukyd.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-11-09_2b009fd7efd1e865a8a7b581239647c3_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:1792
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 560
  2⤵
  - Program crash
  PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3800 -ip 3800
1⤵
PID:1992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1792 -ip 1792
1⤵
PID:5536

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

Indicator Removal

T1070

File Deletion

T1070.004

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

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Downloads

fkukyd.exe

Path C:\Users\Admin\AppData\Local\Temp\fkukyd.exe
Size 12.5MB
SHA256 511333d47f820e8490d43f7e74fd9a6a410c4821720b493cc0c5587f7274645e
MD5 b090672e042e52198d8cad82aae6c9a6
SHA1 b27f91ad11a61bca612be31ae87743a647c8a265
SHA512 be6dd11cbdf259e30c5d2f97fd7a9c0748bc3adac0d0d29a63a60747218406c0ebbd86c5f25eab3014e58dcba3262e1f18ebdf84aff253ef4cf0da4226c25679
SSDEEP 49152:XFjs1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1l1n:V
TLSH
T16DD61730BBFE554AFAF35B3095369AC85A7BBC43F931825E20501D1B1D72E909D62B23
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1792-7-0x0000000000D30000-0x0000000000D43000-memory.dmp

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memory/1792-6-0x00000000005C0000-0x00000000005CD000-memory.dmp

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memory/1792-12-0x0000000000400000-0x0000000000434000-memory.dmp

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memory/2372-11-0x00000000012B0000-0x00000000012C5000-memory.dmp

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memory/2372-8-0x00000000012B0000-0x00000000012C5000-memory.dmp

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memory/2372-14-0x00000000012B0000-0x00000000012C5000-memory.dmp

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memory/2372-15-0x00000000012B0000-0x00000000012C5000-memory.dmp

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memory/2372-16-0x00000000012B0000-0x00000000012C5000-memory.dmp

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memory/3800-0-0x00000000005C0000-0x00000000005CD000-memory.dmp

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memory/3800-1-0x00000000005D0000-0x00000000005E3000-memory.dmp

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memory/3800-13-0x0000000000400000-0x0000000000434000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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