tofsee | c1f205c1f1adeedbfd52d1feea14e745ea438f4d44f9f328fc93fe61184c75a7

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
30/07/2026, 23:35

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General

Target
2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe
Size 13.6MB
Sample260730-3lfknahd22
SHA256 c1f205c1f1adeedbfd52d1feea14e745ea438f4d44f9f328fc93fe61184c75a7
MD5 5c5cbbb19bcdd69856070782bf86f7ca
SHA1 a87f8d475b354faec7030f71896c189dc53aa8b9
SHA512 b7d15ab37939340f08952ccd38160562f9a046ccf854c7d483532cb62bd7e7771d587abaa5bacffdf7b1f4f543c599fae1f748284904f9e268f8fc5b003c85fd
SSDEEP 3072:QurXX+PBiSWHn9SBwcA/Z80HN1TFEGP8HOfwjQ6bdFor3Yz+HKa13jjjjjjjjjj7:pXVSOn9SBKh/TFEGBfw9vo7FHKa
TLSH
T18AE6EA617BF2A045F7FBCA3666314958AB37FC6BF96AC31F20448A5B1C21681CD46B13
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

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2392	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\xdvoqwwq\ImagePath = "C:\\Windows\\SysWOW64\\xdvoqwwq\\wiylzyqu.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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
4616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4432	wiylzyqu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4432 set thread context of 4616	4432	wiylzyqu.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3992	sc.exe
3372	sc.exe
860	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
4540	cmd.exe
4600	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2200	4432	WerFault.exe	97
2340	1672	WerFault.exe	85

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	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wiylzyqu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 4540	1672	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	86
PID 1672 wrote to memory of 4600	1672	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	88
PID 1672 wrote to memory of 3992	1672	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	90
PID 1672 wrote to memory of 3372	1672	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	92
PID 1672 wrote to memory of 860	1672	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	95
PID 4432 wrote to memory of 4616	4432	wiylzyqu.exe	98
PID 4432 wrote to memory of 4616	4432	wiylzyqu.exe	98
PID 1672 wrote to memory of 2392	1672	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xdvoqwwq\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wiylzyqu.exe" C:\Windows\SysWOW64\xdvoqwwq\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xdvoqwwq binPath= "C:\Windows\SysWOW64\xdvoqwwq\wiylzyqu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xdvoqwwq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xdvoqwwq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:860
- 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:2392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1672 -s 648
  2⤵
  - Program crash
  PID:2340

C:\Windows\SysWOW64\xdvoqwwq\wiylzyqu.exe
C:\Windows\SysWOW64\xdvoqwwq\wiylzyqu.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4432 -s 560
  2⤵
  - Program crash
  PID:2200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4432 -ip 4432
1⤵
PID:2808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1672 -ip 1672
1⤵
PID:2348

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

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Downloads

wiylzyqu.exe

Path C:\Users\Admin\AppData\Local\Temp\wiylzyqu.exe
Size 12.8MB
SHA256 55114543b91d43ac38af98192e21d9247b8bfddcb214ac0ba412d37993579b71
MD5 3c6aabd813caa1f2c726f6468c1fb7c6
SHA1 80dc0060b6e7b02b48837f2cd6e19d66a94a55e9
SHA512 c35cb671478ee1a2b74e25269cd157c69b62c82b633ee1d40f8ba14f0473ed3a87c7b24ad0dc5d7c429d04147cf4c688b6dcbef65a0ceae7bb80a90d9ed6ff30
SSDEEP 3072:UurXX+PBiSWHn9SBwcA/Z80HN1TFEGP8HOfwjQ6bdFor3Yz+HKa13jjjjjjjjjjv:tXVSOn9SBKh/TFEGBfw9vo7FHKa
TLSH
T11FD6EA617BF2A045F7FBCA3666314958AB37FC6BF96AC31F20448A5B1C21681CD46B13
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1672-1-0x0000000000970000-0x0000000000A70000-memory.dmp

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memory/1672-2-0x0000000000780000-0x0000000000793000-memory.dmp

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memory/1672-14-0x0000000000400000-0x000000000070F000-memory.dmp

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memory/4432-8-0x0000000000FC0000-0x0000000000FD3000-memory.dmp

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memory/4432-7-0x00000000009F0000-0x0000000000AF0000-memory.dmp

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memory/4432-13-0x0000000000400000-0x000000000070F000-memory.dmp

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memory/4616-9-0x0000000000430000-0x0000000000445000-memory.dmp

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memory/4616-12-0x0000000000430000-0x0000000000445000-memory.dmp

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memory/4616-15-0x0000000000430000-0x0000000000445000-memory.dmp

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memory/4616-16-0x0000000000430000-0x0000000000445000-memory.dmp

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memory/4616-17-0x0000000000430000-0x0000000000445000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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