tofsee | f223ee30bfdef9614319f989bcdfaf5f6bf7b276e16c0d383f4eff0c691766e6

Analysis

max time kernel
148s
max time network
153s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
08/10/2026, 21:57

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General

Target
2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Size 14.7MB
Sample261008-1t7yrset7l
SHA256 f223ee30bfdef9614319f989bcdfaf5f6bf7b276e16c0d383f4eff0c691766e6
MD5 f075f546dd45b6b8f342f86afefcf38d
SHA1 a3477100cdcdd71c5ae509ff8a628875425b801e
SHA512 5c7da02c99d5cfd23206ef33f272a8f8919aba168d08681c4c1f9de6e1b70c4eac6bc8c2c8117bfd3565a0dffafe2d0a76f233850a5bceeaa77d3041a4aa4477
SSDEEP 6144:mHjBpYqdviTbDwkFyXapKagxexexexexexexexexexexexexexexexexexexexea:23Yqd6B5wO
TLSH
T10FF6447392E13C44F6768E319E2F86E8361EFD919F1567EB12087A0B14711ADC1E2B1E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

nidavellir.top
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\xrsmaxkq = "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
4384	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\xrsmaxkq\ImagePath = "C:\\Windows\\SysWOW64\\xrsmaxkq\\ojorvefh.exe"	svchost.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
1428	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3288	ojorvefh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3288 set thread context of 1428	3288	ojorvefh.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
1556	sc.exe
5676	sc.exe
4556	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
3464	cmd.exe
1488	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5524	3288	WerFault.exe	99
1200	4588	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ojorvefh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_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 4588 wrote to memory of 3464	4588	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	88
PID 4588 wrote to memory of 1488	4588	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	90
PID 4588 wrote to memory of 5676	4588	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	92
PID 4588 wrote to memory of 4556	4588	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	94
PID 4588 wrote to memory of 1556	4588	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	97
PID 4588 wrote to memory of 4384	4588	2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	100
PID 3288 wrote to memory of 1428	3288	ojorvefh.exe	104
PID 3288 wrote to memory of 1428	3288	ojorvefh.exe	104

C:\Users\Admin\AppData\Local\Temp\2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-08_f075f546dd45b6b8f342f86afefcf38d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xrsmaxkq\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ojorvefh.exe" C:\Windows\SysWOW64\xrsmaxkq\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xrsmaxkq binPath= "C:\Windows\SysWOW64\xrsmaxkq\ojorvefh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-10-08_f075f546dd45b6b8f342f86afefcf38d_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:5676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xrsmaxkq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xrsmaxkq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1556
- 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:4384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 1092
  2⤵
  - Program crash
  PID:1200

C:\Windows\SysWOW64\xrsmaxkq\ojorvefh.exe
C:\Windows\SysWOW64\xrsmaxkq\ojorvefh.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-10-08_f075f546dd45b6b8f342f86afefcf38d_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:3288
- 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:1428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3288 -s 596
  2⤵
  - Program crash
  PID:5524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4588 -ip 4588
1⤵
PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3288 -ip 3288
1⤵
PID:3760

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

Indicator Removal

T1070

File Deletion

T1070.004

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

ojorvefh.exe

Path C:\Users\Admin\AppData\Local\Temp\ojorvefh.exe
Size 13.9MB
SHA256 5a60c477629160ec4b87c9edf46d75f0e6e95d5c50cfe871e726431c0fc7da7d
MD5 4eace65db95ac49af32bbb1058a6f17e
SHA1 cd58e6e328958f7a45da2fa1c2ade10571cdd901
SHA512 affa7ad955339a2bf16bb982fc8881220e32970a637c08e6826bb09b24831f86c26cce4cb7712e67230264fbe39a7aad6dcdab2499d4ccc8d30c763a6e5dcf3c
SSDEEP 6144:gHjBpYqdviTbDwkFyXapKagxexexexexexexexexexexexexexexexexexexexey:c3Yqd6B5wm
TLSH
T1AFE6447392E13C44F6768E319E2F86E8361EFD919F1567EB12087A0B14711ADC1E2B1E
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1428-12-0x0000000000960000-0x0000000000975000-memory.dmp

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memory/1428-18-0x0000000000960000-0x0000000000975000-memory.dmp

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memory/1428-19-0x0000000000960000-0x0000000000975000-memory.dmp

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memory/3288-8-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/3288-10-0x0000000000780000-0x0000000000880000-memory.dmp

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memory/3288-11-0x0000000000640000-0x0000000000653000-memory.dmp

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memory/3288-15-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/4588-0-0x0000000000400000-0x00000000004AF000-memory.dmp

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memory/4588-2-0x0000000000680000-0x0000000000780000-memory.dmp

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memory/4588-3-0x0000000000650000-0x0000000000663000-memory.dmp

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memory/4588-17-0x0000000000400000-0x00000000004AF000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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