Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
13/08/2026, 22:27
General
- Target 2026-08-13_9814de3c8f0f38cf95bc2d019508784c_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
- Size 10.2MB
- Sample260813-2c8dmsyzcv
- SHA256 145d50a2758ad6bde70e2f622e37b14d2d7dd15e4951920e00f8259855d98622
Malware Config
Extracted
-
tofsee
-
svartalfheim.top
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jotunheim.name
Signatures
- Family: Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
- Modifies Windows Firewall 2 TTPs 1 IoCs
- 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Creates new service(s) 2 TTPs
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- 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.
- Program crash 2 IoCs
- 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.
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2026-08-13_9814de3c8f0f38cf95bc2d019508784c_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-13_9814de3c8f0f38cf95bc2d019508784c_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ejbywiny\2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ujtxkla.exe" C:\Windows\SysWOW64\ejbywiny\2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create ejbywiny binPath= "C:\Windows\SysWOW64\ejbywiny\ujtxkla.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-13_9814de3c8f0f38cf95bc2d019508784c_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
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description ejbywiny "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start ejbywiny2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
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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>nul2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1672 -s 10402⤵
- Program crash
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C:\Windows\SysWOW64\ejbywiny\ujtxkla.exeC:\Windows\SysWOW64\ejbywiny\ujtxkla.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-13_9814de3c8f0f38cf95bc2d019508784c_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
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C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4236 -s 5282⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1672 -ip 16721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4236 -ip 42361⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1System Services
1Service Execution
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
ujtxkla.exe
memory/1672-1-0x0000000002790000-0x0000000002890000-memory.dmp
memory/1672-2-0x0000000002730000-0x0000000002743000-memory.dmp
memory/1672-11-0x0000000002730000-0x0000000002743000-memory.dmp
memory/1672-10-0x0000000000400000-0x00000000024C2000-memory.dmp
memory/2992-7-0x0000000000110000-0x0000000000125000-memory.dmp
memory/2992-12-0x0000000000110000-0x0000000000125000-memory.dmp
memory/2992-13-0x0000000000110000-0x0000000000125000-memory.dmp
memory/4236-9-0x0000000000400000-0x00000000024C2000-memory.dmp