tofsee | 33445d515b7c490094456913e6e6999af00e1128ff1e8e81528c2d65807c76a3

Analysis

max time kernel
150s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 12:10

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General

Target
2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe
Size 10.4MB
Sample261014-pcdsta1x5n
SHA256 33445d515b7c490094456913e6e6999af00e1128ff1e8e81528c2d65807c76a3
MD5 c9a74fdd0ed22d63770dbb9ff21ae19a
SHA1 7bd8d54ea0af45cfac5ff02f8db33831bc0d5dd6
SHA512 61dd202076f21882a0c393e03a2c6b3aa4e644df659d8ba1026d23de22df41a4b930c492e6e8168c50b91936e0ebc0b62c871160ae93a08dc68732e251a076aa
SSDEEP 3072:K05Xaz5ADFeLcYUL0raX1cmS7d/zCpmHbj9nGezTWJPUKX5hzT4SNN4SNN4SNN44:KEM6YUL02lcmErCYGezTYdD
TLSH
T108B65B2255B62570C87D417D3B0C774C2AEFF7F2A2E4A2BB9129A5C40813B8D55C6E3B
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\wcacodut = "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
1652	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\wcacodut\ImagePath = "C:\\Windows\\SysWOW64\\wcacodut\\cfyjjstt.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
4320	cfyjjstt.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 4320 set thread context of 2480	4320	cfyjjstt.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4844	sc.exe
2820	sc.exe
4452	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
3560	cmd.exe
5972	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3572	4320	WerFault.exe	100
4428	5920	WerFault.exe	88

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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfyjjstt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5920 wrote to memory of 3560	5920	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe	89
PID 5920 wrote to memory of 5972	5920	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe	91
PID 5920 wrote to memory of 4844	5920	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe	93
PID 5920 wrote to memory of 2820	5920	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe	95
PID 5920 wrote to memory of 4452	5920	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe	98
PID 4320 wrote to memory of 2480	4320	cfyjjstt.exe	101
PID 4320 wrote to memory of 2480	4320	cfyjjstt.exe	101
PID 5920 wrote to memory of 1652	5920	2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5920
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wcacodut\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cfyjjstt.exe" C:\Windows\SysWOW64\wcacodut\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wcacodut binPath= "C:\Windows\SysWOW64\wcacodut\cfyjjstt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wcacodut "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wcacodut
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4452
- 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:1652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5920 -s 1100
  2⤵
  - Program crash
  PID:4428

C:\Windows\SysWOW64\wcacodut\cfyjjstt.exe
C:\Windows\SysWOW64\wcacodut\cfyjjstt.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-10-14_c9a74fdd0ed22d63770dbb9ff21ae19a_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_stop.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  PID:2480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4320 -s 608
  2⤵
  - Program crash
  PID:3572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4320 -ip 4320
1⤵
PID:1512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5920 -ip 5920
1⤵
PID:5360

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

Service Stop

T1489

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Downloads

cfyjjstt.exe

Path C:\Users\Admin\AppData\Local\Temp\cfyjjstt.exe
Size 10.8MB
SHA256 052e17ea3735a512dedbbd27dd804585bbe34acd2fd949b7133644d0e58852a3
MD5 3dfa5471b6ddb8ac6296cf2176887c0e
SHA1 3232cff7978e90cb5ca4e41d1e25003db1d43822
SHA512 f4442ed5ffcb019c27fc870e2ce0d2ae547a5f2e7229a0f1cb1d75fdce2f4f7d2f053f728e6d8fa28ca4b2a3b38361f2348a3c7800f1ae427e889415d1a79877
SSDEEP 3072:505Xaz5ADFeLcYUL0raX1cmS7d/zCpmHbj9nGezTWJPUKX5hzT4SNN4SNN4SNN4q:5EM6YUL02lcmErCYGezTYdD
TLSH
T1BAB65B2255B62570C87D417D3B0C774C2AEFF7F2A2E4A2BB9129A5C40813B8D55C6E3B
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2480-10-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

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memory/2480-19-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

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memory/2480-17-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

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memory/2480-13-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

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memory/4320-9-0x00000000008F0000-0x0000000000903000-memory.dmp

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memory/4320-8-0x0000000000960000-0x0000000000A60000-memory.dmp

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memory/4320-16-0x0000000000960000-0x0000000000A60000-memory.dmp

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memory/4320-18-0x0000000000400000-0x0000000000702000-memory.dmp

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memory/5920-14-0x0000000000A50000-0x0000000000B50000-memory.dmp

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memory/5920-15-0x0000000000400000-0x0000000000702000-memory.dmp

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memory/5920-2-0x0000000000990000-0x00000000009A3000-memory.dmp

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memory/5920-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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