tofsee | 074ba102865f1f3f57cd996a030aa6ca249ca9e6d1fad7e3a600f6af223d47ce

Analysis

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

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
28/06/2026, 22:22

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General

Target
2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 12.6MB
Sample260628-2aa1csft5v
SHA256 074ba102865f1f3f57cd996a030aa6ca249ca9e6d1fad7e3a600f6af223d47ce
MD5 5c5442eaf88d51da0eb38cbf0974ebea
SHA1 a12a7f3a5f5096a67e305e32dae07cb00509b0a4
SHA512 b679f1223ef8d2c4db01465c27a81e7e66f4bbede306b34732093f8c030c972bdda7935619c9861febdf8828b129e4d21c714a53410fe56c5fd126d0ada39ce9
SSDEEP 393216:oEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfR:oEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgr
TLSH
T1FDD6786EFA4903F301C1037A674E94C7BB0AD8B9636B56F0246D844F6267E2CA377791
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
3036	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\psmmtsnj\ImagePath = "C:\\Windows\\SysWOW64\\psmmtsnj\\ugolreki.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-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_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
4340	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	ugolreki.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 4072 set thread context of 4340	4072	ugolreki.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
1372	sc.exe
2200	sc.exe
220	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3220	3100	WerFault.exe	85
4460	4072	WerFault.exe	101

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	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ugolreki.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 4404	3100	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	86
PID 3100 wrote to memory of 1212	3100	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	88
PID 3100 wrote to memory of 1372	3100	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	92
PID 3100 wrote to memory of 2200	3100	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	94
PID 3100 wrote to memory of 220	3100	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	99
PID 3100 wrote to memory of 3036	3100	2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe	102
PID 4072 wrote to memory of 4340	4072	ugolreki.exe	108
PID 4072 wrote to memory of 4340	4072	ugolreki.exe	108

C:\Users\Admin\AppData\Local\Temp\2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_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:3100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\psmmtsnj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ugolreki.exe" C:\Windows\SysWOW64\psmmtsnj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create psmmtsnj binPath= "C:\Windows\SysWOW64\psmmtsnj\ugolreki.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_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:1372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description psmmtsnj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start psmmtsnj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:220
- 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:3036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 592
  2⤵
  - Program crash
  PID:3220

C:\Windows\SysWOW64\psmmtsnj\ugolreki.exe
C:\Windows\SysWOW64\psmmtsnj\ugolreki.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-06-28_5c5442eaf88d51da0eb38cbf0974ebea_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:4072
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 516
  2⤵
  - Program crash
  PID:4460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3100 -ip 3100
1⤵
PID:3424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4072 -ip 4072
1⤵
PID:460

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

ugolreki.exe

Path C:\Users\Admin\AppData\Local\Temp\ugolreki.exe
Size 11.1MB
SHA256 04993e8b4e5b3a6098ba9edc1d77eec05edf2fee06d9ee6ac8b5a3a2ad2a6411
MD5 ee4d6b4ec878bf5bb0659023261e45c2
SHA1 feab7c5c603c8e83eb47382a501f9ec691bb57c0
SHA512 b8b64fa4d34de95690cdf3fa27b26fd42b5d4aae4b938aec93f7f8053f8d26b99fb349cd4e31abe5685c018ca90998904b8ba1af622fda89151b6cd7af9ed128
SSDEEP 196608:NEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfgRfc:NEaDRfgRfgRfgRfgRfgRfgRfgRfgRfgG
TLSH
T11BC6786EFA4903F341C1037A274E94C7BB0AD8B9636B56F0246D844F6267E2CA377791
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3100-0-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/3100-2-0x0000000002590000-0x0000000002690000-memory.dmp

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memory/3100-3-0x00000000023E0000-0x00000000023F3000-memory.dmp

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memory/3100-9-0x00000000023E0000-0x00000000023F3000-memory.dmp

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memory/3100-10-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/4072-7-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/4072-16-0x0000000000400000-0x000000000229F000-memory.dmp

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memory/4340-12-0x0000000000180000-0x0000000000195000-memory.dmp

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memory/4340-14-0x0000000000180000-0x0000000000195000-memory.dmp

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memory/4340-15-0x0000000000180000-0x0000000000195000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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