tofsee | 52409bf8fbc9f914bee8e6a15dc1b679e7810dfabe928e2827813613898c7224

General

Target

2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe
Size

12.4MB
MD5

06491c8b15b43f9626d894cec68bfc25
SHA1

bf7b53490c306009ac01efec624aa9e59f43577e
SHA256

52409bf8fbc9f914bee8e6a15dc1b679e7810dfabe928e2827813613898c7224
SHA512

69be35f15e7adcf738263b4c30b48c23549306c4f327a9f0f2dc32d4a0b6433f517e6c5ee6b49318c235c2b77547e57b0b8234ca10b27c042353ac22287ee75d
SSDEEP

49152:0/hNzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz6:0pk

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
4960	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\oxiuxatg\ImagePath = "C:\\Windows\\SysWOW64\\oxiuxatg\\kbjhrmth.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-1-5-21-3027557611-1484967174-339164627-1000\Control Panel\International\Geo\Nation	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
3156	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4964	kbjhrmth.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4964 set thread context of 3156	4964	kbjhrmth.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4788	sc.exe
912	sc.exe
4820	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
2580	4964	WerFault.exe	100
2656	1852	WerFault.exe	83

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	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kbjhrmth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 3512	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	87
PID 1852 wrote to memory of 3512	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	87
PID 1852 wrote to memory of 3512	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	87
PID 1852 wrote to memory of 4652	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	89
PID 1852 wrote to memory of 4652	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	89
PID 1852 wrote to memory of 4652	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	89
PID 1852 wrote to memory of 4788	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	91
PID 1852 wrote to memory of 4788	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	91
PID 1852 wrote to memory of 4788	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	91
PID 1852 wrote to memory of 912	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	95
PID 1852 wrote to memory of 912	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	95
PID 1852 wrote to memory of 912	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	95
PID 1852 wrote to memory of 4820	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	98
PID 1852 wrote to memory of 4820	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	98
PID 1852 wrote to memory of 4820	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	98
PID 1852 wrote to memory of 4960	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	101
PID 1852 wrote to memory of 4960	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	101
PID 1852 wrote to memory of 4960	1852	2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe	101
PID 4964 wrote to memory of 3156	4964	kbjhrmth.exe	105
PID 4964 wrote to memory of 3156	4964	kbjhrmth.exe	105
PID 4964 wrote to memory of 3156	4964	kbjhrmth.exe	105
PID 4964 wrote to memory of 3156	4964	kbjhrmth.exe	105
PID 4964 wrote to memory of 3156	4964	kbjhrmth.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oxiuxatg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kbjhrmth.exe" C:\Windows\SysWOW64\oxiuxatg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oxiuxatg binPath= "C:\Windows\SysWOW64\oxiuxatg\kbjhrmth.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oxiuxatg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oxiuxatg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4820
- 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:4960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1852 -s 596
  2⤵
  - Program crash
  PID:2656

C:\Windows\SysWOW64\oxiuxatg\kbjhrmth.exe
C:\Windows\SysWOW64\oxiuxatg\kbjhrmth.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-12_06491c8b15b43f9626d894cec68bfc25_elex_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 532
  2⤵
  - Program crash
  PID:2580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1852 -ip 1852
1⤵
PID:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4964 -ip 4964
1⤵
PID:1396

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\kbjhrmth.exe

Filesize
10.1MB

MD5
c43ea1a8d68a5e637ec7bae812bb1bb1

SHA1
6c4f2d8db2942bcc0522441b1f24394bb712788d

SHA256
9bc2807dad02b376a2fefe0df93b85d1c5d0218e1331d184d2031e1456f3d473

SHA512
218f66eaf383bff0d031009cf49cd7dcc8fefabbb0db60d2f5ed325f8b9b9f26309dc57a93be908f3df4fa6470cc5d6f28cc90c700f9e514dc6a4060a2463e94

Download Submit
memory/1852-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1852-2-0x0000000000A00000-0x0000000000A13000-memory.dmp

Filesize
76KB

Download
memory/1852-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1852-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/1852-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1852-17-0x0000000000A00000-0x0000000000A13000-memory.dmp

Filesize
76KB

Download
memory/3156-19-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/3156-21-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/3156-10-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/3156-13-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/3156-20-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/4964-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4964-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4964-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads