tofsee | d75045dc8f8c594c1ff7a72d5949db5c57d0c5854451f102d7f59bcd934be622

General

Target

2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Size

14.8MB
MD5

30f052af31bc2707545df5d0fe864640
SHA1

f9d392a8ddacd0a008885e9a32175a18de342e84
SHA256

d75045dc8f8c594c1ff7a72d5949db5c57d0c5854451f102d7f59bcd934be622
SHA512

4c041f4ef392c4617845cdcfaa3c9f0d52647ca482d02d9b73791e87fea4ff553e09782118e5c4af3b3f17becd84d716d0944f70d21d4b0322fe103b42834f43
SSDEEP

3072:AEvsKFt0pYpKaf6qDq+AltdnVlfbI4qfu9KBNqJXydUo8WR+gYXauauauauauauO:AEvse06KafvG+AlttV9I1GMYxydUotP

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
956	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\bkjfwtv\ImagePath = "C:\\Windows\\SysWOW64\\bkjfwtv\\riqoytao.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-1-5-21-186956858-2143653872-2609589082-1000\Control Panel\International\Geo\Nation	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe

Deletes itself 1 IoCs

pid	Process
2060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4528	riqoytao.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4528 set thread context of 2060	4528	riqoytao.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
1612	sc.exe
3068	sc.exe
1960	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
2684	1568	WerFault.exe	85
3420	4528	WerFault.exe	99

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-05-08_30f052af31bc2707545df5d0fe864640_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	riqoytao.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 4396	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	89
PID 1568 wrote to memory of 4396	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	89
PID 1568 wrote to memory of 4396	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	89
PID 1568 wrote to memory of 4116	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	91
PID 1568 wrote to memory of 4116	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	91
PID 1568 wrote to memory of 4116	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	91
PID 1568 wrote to memory of 1960	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	93
PID 1568 wrote to memory of 1960	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	93
PID 1568 wrote to memory of 1960	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	93
PID 1568 wrote to memory of 1612	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	95
PID 1568 wrote to memory of 1612	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	95
PID 1568 wrote to memory of 1612	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	95
PID 1568 wrote to memory of 3068	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	97
PID 1568 wrote to memory of 3068	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	97
PID 1568 wrote to memory of 3068	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	97
PID 1568 wrote to memory of 956	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	100
PID 1568 wrote to memory of 956	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	100
PID 1568 wrote to memory of 956	1568	2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	100
PID 4528 wrote to memory of 2060	4528	riqoytao.exe	105
PID 4528 wrote to memory of 2060	4528	riqoytao.exe	105
PID 4528 wrote to memory of 2060	4528	riqoytao.exe	105
PID 4528 wrote to memory of 2060	4528	riqoytao.exe	105
PID 4528 wrote to memory of 2060	4528	riqoytao.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2025-05-08_30f052af31bc2707545df5d0fe864640_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bkjfwtv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\riqoytao.exe" C:\Windows\SysWOW64\bkjfwtv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bkjfwtv binPath= "C:\Windows\SysWOW64\bkjfwtv\riqoytao.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-05-08_30f052af31bc2707545df5d0fe864640_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:1960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bkjfwtv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bkjfwtv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3068
- 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:956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 1036
  2⤵
  - Program crash
  PID:2684

C:\Windows\SysWOW64\bkjfwtv\riqoytao.exe
C:\Windows\SysWOW64\bkjfwtv\riqoytao.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-05-08_30f052af31bc2707545df5d0fe864640_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:4528
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 512
  2⤵
  - Program crash
  PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1568 -ip 1568
1⤵
PID:1020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4528 -ip 4528
1⤵
PID:2440

Network

MITRE ATT&CK Enterprise v16

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\riqoytao.exe

Filesize
11.6MB

MD5
2e08f864c1d0a65923af92b2c236d30a

SHA1
a3254754db12db6bf43e90a4f847961c1cdb1f54

SHA256
9ca4e64db7b219ddf7e1fb66ca4c141499e0c04d407884aa7f8d6bbb22525c3d

SHA512
8be2dda4068c0bedd918cd0986d96d2fdadf526680cc65b5263141781a4e29ca69fb211967077ac15eb45ea6a5a40dd1e22880b510752e5b5ddbeb4467261c54

Download Submit
memory/1568-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1568-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1568-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1568-7-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1568-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1568-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/2060-14-0x00000000009B0000-0x00000000009C5000-memory.dmp

Filesize
84KB

Download
memory/2060-16-0x00000000009B0000-0x00000000009C5000-memory.dmp

Filesize
84KB

Download
memory/2060-17-0x00000000009B0000-0x00000000009C5000-memory.dmp

Filesize
84KB

Download
memory/4528-11-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/4528-12-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/4528-13-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/4528-19-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads