tofsee | a42a6e58fba208fdafadcbe883eba160bde9103eea06a8d29aabc40c6b1a8cfd

General

Target

2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe
Size

10.9MB
MD5

2af6bc030027c4b72c4303d85fe54a19
SHA1

cfbafae542f2de7e1fa39521f94b6af47c00eec6
SHA256

a42a6e58fba208fdafadcbe883eba160bde9103eea06a8d29aabc40c6b1a8cfd
SHA512

4d4b7faf11aae0b1ef18b9697abf8cb08ee645acd8927797ec108a86b7dd5c06fed7b682ac3600758e9a2532f87c3521284fc34d9f57c35c99281cbba5d9d053
SSDEEP

3072:zbrmSZiLLReuGpM3fs+QnAIDs+U0CzofG5FL5Vkh0xF7Zq0BTFvFvFvFvFvFvFvf:LiLLsuG+3f/QnAF0CMMUaX

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
628	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\pnbizhxl\ImagePath = "C:\\Windows\\SysWOW64\\pnbizhxl\\tvozgocs.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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
1380	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1692	tvozgocs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1692 set thread context of 1380	1692	tvozgocs.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4600	sc.exe
2708	sc.exe
2948	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
4904	1692	WerFault.exe	102
2240	5040	WerFault.exe	85

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tvozgocs.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	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 2936	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	89
PID 5040 wrote to memory of 2936	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	89
PID 5040 wrote to memory of 2936	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	89
PID 5040 wrote to memory of 556	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	91
PID 5040 wrote to memory of 556	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	91
PID 5040 wrote to memory of 556	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	91
PID 5040 wrote to memory of 4600	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	94
PID 5040 wrote to memory of 4600	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	94
PID 5040 wrote to memory of 4600	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	94
PID 5040 wrote to memory of 2708	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	98
PID 5040 wrote to memory of 2708	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	98
PID 5040 wrote to memory of 2708	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	98
PID 5040 wrote to memory of 2948	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	100
PID 5040 wrote to memory of 2948	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	100
PID 5040 wrote to memory of 2948	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	100
PID 1692 wrote to memory of 1380	1692	tvozgocs.exe	103
PID 1692 wrote to memory of 1380	1692	tvozgocs.exe	103
PID 1692 wrote to memory of 1380	1692	tvozgocs.exe	103
PID 1692 wrote to memory of 1380	1692	tvozgocs.exe	103
PID 1692 wrote to memory of 1380	1692	tvozgocs.exe	103
PID 5040 wrote to memory of 628	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	108
PID 5040 wrote to memory of 628	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	108
PID 5040 wrote to memory of 628	5040	2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pnbizhxl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tvozgocs.exe" C:\Windows\SysWOW64\pnbizhxl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pnbizhxl binPath= "C:\Windows\SysWOW64\pnbizhxl\tvozgocs.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pnbizhxl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pnbizhxl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2948
- 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:628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5040 -s 1180
  2⤵
  - Program crash
  PID:2240

C:\Windows\SysWOW64\pnbizhxl\tvozgocs.exe
C:\Windows\SysWOW64\pnbizhxl\tvozgocs.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_2af6bc030027c4b72c4303d85fe54a19_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 508
  2⤵
  - Program crash
  PID:4904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1692 -ip 1692
1⤵
PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 5040 -ip 5040
1⤵
PID:4064

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\tvozgocs.exe

Filesize
12.4MB

MD5
d7b74544b9644d38da1caf4b8cd4b04b

SHA1
750f8c27c997e5e1004d7d3aecceb7daa1a23153

SHA256
19dbe8ec3d6be1bb6741a2fa9d2af925fb035ba1a256b7598596e3cd1fbbe864

SHA512
5cfb411a6b819de401808f07a137de85a0abf9e32265d56d931e47bc1ba3ca068dcd2c464e16f7e3e872623c53ac452fe2a9d5fe124d556b361125bad1ba4e69

Download Submit
memory/1380-13-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1380-20-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1380-19-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1380-9-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1380-18-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1692-12-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/1692-8-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/5040-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/5040-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5040-16-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/5040-15-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/5040-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5040-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads