tofsee | 25b5a02112f637745bdafc3cabfac046a51e4a22c94a2fdefbc73a4fda4d1d2d

General

Target

2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe
Size

11.1MB
MD5

3de07fc37b1ec7bcc81605a734e3d1d4
SHA1

a8e4cc3a1ae14ad10186c64ed8a9502093f05967
SHA256

25b5a02112f637745bdafc3cabfac046a51e4a22c94a2fdefbc73a4fda4d1d2d
SHA512

f479165819a3cf589cf411cabc1da93f5037214fc3c417bb8a76c00b3c94d87126a4332cb557e4578cc6fc131b11c0babcda8efc6249938093e016adcaab92c1
SSDEEP

6144:kWJVsv5VHd74XANXpZu0wn81Nm89qmrHTL8h6ly5bdnG:RVsvb6XANXpgV67qE/tlyvG

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4076	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\hntwtzsw\ImagePath = "C:\\Windows\\SysWOW64\\hntwtzsw\\lxwkvfnh.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-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
4964	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5132	lxwkvfnh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5132 set thread context of 4964	5132	lxwkvfnh.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4676	sc.exe
4884	sc.exe
4020	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
2488	5356	WerFault.exe	84
5164	5132	WerFault.exe	100

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	lxwkvfnh.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	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5356 wrote to memory of 1988	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	87
PID 5356 wrote to memory of 1988	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	87
PID 5356 wrote to memory of 1988	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	87
PID 5356 wrote to memory of 5564	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	90
PID 5356 wrote to memory of 5564	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	90
PID 5356 wrote to memory of 5564	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	90
PID 5356 wrote to memory of 4676	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	92
PID 5356 wrote to memory of 4676	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	92
PID 5356 wrote to memory of 4676	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	92
PID 5356 wrote to memory of 4884	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	94
PID 5356 wrote to memory of 4884	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	94
PID 5356 wrote to memory of 4884	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	94
PID 5356 wrote to memory of 4020	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	98
PID 5356 wrote to memory of 4020	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	98
PID 5356 wrote to memory of 4020	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	98
PID 5132 wrote to memory of 4964	5132	lxwkvfnh.exe	101
PID 5132 wrote to memory of 4964	5132	lxwkvfnh.exe	101
PID 5132 wrote to memory of 4964	5132	lxwkvfnh.exe	101
PID 5132 wrote to memory of 4964	5132	lxwkvfnh.exe	101
PID 5132 wrote to memory of 4964	5132	lxwkvfnh.exe	101
PID 5356 wrote to memory of 4076	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	103
PID 5356 wrote to memory of 4076	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	103
PID 5356 wrote to memory of 4076	5356	2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hntwtzsw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lxwkvfnh.exe" C:\Windows\SysWOW64\hntwtzsw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hntwtzsw binPath= "C:\Windows\SysWOW64\hntwtzsw\lxwkvfnh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hntwtzsw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hntwtzsw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4020
- 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:4076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5356 -s 1272
  2⤵
  - Program crash
  PID:2488

C:\Windows\SysWOW64\hntwtzsw\lxwkvfnh.exe
C:\Windows\SysWOW64\hntwtzsw\lxwkvfnh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_3de07fc37b1ec7bcc81605a734e3d1d4_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5132
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5132 -s 560
  2⤵
  - Program crash
  PID:5164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5132 -ip 5132
1⤵
PID:2312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 5356 -ip 5356
1⤵
PID:4756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lxwkvfnh.exe

Filesize
12.0MB

MD5
77c23126ebadc493fd6d7edc046c64d6

SHA1
f61d9c6bee9f6c62749824e0e1e8fb6099972e46

SHA256
adf1438ca9180eaefe40886136abde57a6f067b96891469c9f8c882bc71ae8c1

SHA512
610024be0712977797537c85ad5fd41bcb39a64e8e6e66c9f9e6db05953308d7ddaa9532f45362e3253bb013bdd6e3c3cddce3d8600f453f721a527816dcf75b

Download Submit
memory/4964-10-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/4964-13-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/4964-21-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/4964-20-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/4964-19-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/5132-15-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5132-9-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5132-8-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5356-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/5356-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5356-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5356-16-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5356-17-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/5356-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads