tofsee | c1f205c1f1adeedbfd52d1feea14e745ea438f4d44f9f328fc93fe61184c75a7

Analysis

max time kernel
148s
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
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

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\xengvmqu = "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
776	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\xengvmqu\ImagePath = "C:\\Windows\\SysWOW64\\xengvmqu\\smrpknkm.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
5064	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3160	smrpknkm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3160 set thread context of 5064	3160	smrpknkm.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4108	sc.exe
3656	sc.exe
5700	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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
4212	cmd.exe
4144	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4492	3160	WerFault.exe	99
5172	3400	WerFault.exe	87

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	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	2026-07-30_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	smrpknkm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3400 wrote to memory of 4212	3400	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	88
PID 3400 wrote to memory of 4144	3400	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	90
PID 3400 wrote to memory of 4108	3400	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	92
PID 3400 wrote to memory of 3656	3400	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	94
PID 3400 wrote to memory of 5700	3400	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	97
PID 3160 wrote to memory of 5064	3160	smrpknkm.exe	100
PID 3160 wrote to memory of 5064	3160	smrpknkm.exe	100
PID 3400 wrote to memory of 776	3400	2026-07-30_5c5cbbb19bcdd69856070782bf86f7ca_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	103

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⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xengvmqu\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\smrpknkm.exe" C:\Windows\SysWOW64\xengvmqu\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xengvmqu binPath= "C:\Windows\SysWOW64\xengvmqu\smrpknkm.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:4108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xengvmqu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xengvmqu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5700
- 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:776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3400 -s 1088
  2⤵
  - Program crash
  PID:5172

C:\Windows\SysWOW64\xengvmqu\smrpknkm.exe
C:\Windows\SysWOW64\xengvmqu\smrpknkm.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:3160
- 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:5064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3160 -s 592
  2⤵
  - Program crash
  PID:4492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3160 -ip 3160
1⤵
PID:5592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3400 -ip 3400
1⤵
PID:948

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

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Downloads

smrpknkm.exe

Path C:\Users\Admin\AppData\Local\Temp\smrpknkm.exe
Size 12.6MB
SHA256 1ca793f22d8d084dba352def2e88eb06469a80be90303d926d1aaf4fea252177
MD5 bc07e6932b30e271849901f68572eb12
SHA1 a4fe6359fb3bf9268eb0338e6a30a1a14eb945de
SHA512 6130739b027a1e08eb178f8f50f13690fb192895688168d507f27e52b00fd97913241252ad0aae8e81e9fabde5474e7526ce2bea5e276b6e982847d2be319302
SSDEEP 3072:xurXX+PBiSWHn9SBwcA/Z80HN1TFEGP8HOfwjQ6bdFor3Yz+HKa13jjjjjjjjjj/:WXVSOn9SBKh/TFEGBfw9vo7FHKa
TLSH
T167D6EA617BF2A045F7FBCA3666314958AB37FC6BF96AC31F20448A5B1C21681CD46B13
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3160-7-0x0000000000960000-0x0000000000A60000-memory.dmp

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memory/3160-13-0x0000000001140000-0x0000000001153000-memory.dmp

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memory/3160-12-0x0000000000400000-0x000000000070F000-memory.dmp

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memory/3400-2-0x0000000002370000-0x0000000002383000-memory.dmp

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memory/3400-1-0x0000000000870000-0x0000000000970000-memory.dmp

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memory/3400-14-0x0000000000400000-0x000000000070F000-memory.dmp

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memory/5064-8-0x0000000000190000-0x00000000001A5000-memory.dmp

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memory/5064-11-0x0000000000190000-0x00000000001A5000-memory.dmp

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memory/5064-15-0x0000000000190000-0x00000000001A5000-memory.dmp

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memory/5064-16-0x0000000000190000-0x00000000001A5000-memory.dmp

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memory/5064-17-0x0000000000190000-0x00000000001A5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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