tofsee | b188a4a8b0ba36f432612851f8e5629ffab553326c2295965051d0f4b4688746

General

Target

2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe
Size

11.5MB
MD5

3282f12ab10ce2ea3bdb07ea836b4f2e
SHA1

c8852356850c23dcdf6d356212b63433e8996aeb
SHA256

b188a4a8b0ba36f432612851f8e5629ffab553326c2295965051d0f4b4688746
SHA512

f9f03c879a3debcdcf3f5e1959296d7a2a3decd1a0f57b8964958695604177f934da2063a6dde44d82699a78bf3b2115db7ae741bed1bcf2bb338095aa40178d
SSDEEP

6144:92MDRs+9skCSisUPOdxJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJs:92y6eCSio0

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
2816	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\dwvuklgz\ImagePath = "C:\\Windows\\SysWOW64\\dwvuklgz\\arzxhcjx.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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
4748	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4928	arzxhcjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4928 set thread context of 4748	4928	arzxhcjx.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4032	sc.exe
4632	sc.exe
4804	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
5680	4928	WerFault.exe	99
3612	4232	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	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_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	svchost.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	arzxhcjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4232 wrote to memory of 212	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	86
PID 4232 wrote to memory of 212	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	86
PID 4232 wrote to memory of 212	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	86
PID 4232 wrote to memory of 1668	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	91
PID 4232 wrote to memory of 1668	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	91
PID 4232 wrote to memory of 1668	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	91
PID 4232 wrote to memory of 4032	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	93
PID 4232 wrote to memory of 4032	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	93
PID 4232 wrote to memory of 4032	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	93
PID 4232 wrote to memory of 4632	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	95
PID 4232 wrote to memory of 4632	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	95
PID 4232 wrote to memory of 4632	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	95
PID 4232 wrote to memory of 4804	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	97
PID 4232 wrote to memory of 4804	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	97
PID 4232 wrote to memory of 4804	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	97
PID 4928 wrote to memory of 4748	4928	arzxhcjx.exe	100
PID 4928 wrote to memory of 4748	4928	arzxhcjx.exe	100
PID 4928 wrote to memory of 4748	4928	arzxhcjx.exe	100
PID 4928 wrote to memory of 4748	4928	arzxhcjx.exe	100
PID 4928 wrote to memory of 4748	4928	arzxhcjx.exe	100
PID 4232 wrote to memory of 2816	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	104
PID 4232 wrote to memory of 2816	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	104
PID 4232 wrote to memory of 2816	4232	2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwvuklgz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\arzxhcjx.exe" C:\Windows\SysWOW64\dwvuklgz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dwvuklgz binPath= "C:\Windows\SysWOW64\dwvuklgz\arzxhcjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dwvuklgz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dwvuklgz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4804
- 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:2816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4232 -s 1044
  2⤵
  - Program crash
  PID:3612

C:\Windows\SysWOW64\dwvuklgz\arzxhcjx.exe
C:\Windows\SysWOW64\dwvuklgz\arzxhcjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-28_3282f12ab10ce2ea3bdb07ea836b4f2e_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 512
  2⤵
  - Program crash
  PID:5680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4928 -ip 4928
1⤵
PID:1992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4232 -ip 4232
1⤵
PID:2084

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\arzxhcjx.exe

Filesize
11.9MB

MD5
f9fab7471e857a821eaf591de0d1b076

SHA1
255f0c3798850c00cfc2a8b1708f4c93c9c628a3

SHA256
6a484a76ee075c12b2ecc977fbce104a280c7d5dc949b995cd5a72227cadb6de

SHA512
c676e22a36cfa7fa496ef035b6d1146885f7f884f4c4a1b37cd203a53d0741fccaccee1540ef8f5abf65cf953490710b18d947e003d9818d65ff49ef65dcb51c

Download Submit
memory/4232-2-0x0000000006CA0000-0x0000000006CB3000-memory.dmp

Filesize
76KB

Download
memory/4232-1-0x0000000006D30000-0x0000000006E30000-memory.dmp

Filesize
1024KB

Download
memory/4232-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4232-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4232-12-0x0000000006CA0000-0x0000000006CB3000-memory.dmp

Filesize
76KB

Download
memory/4232-11-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/4748-8-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4748-14-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4748-15-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4928-10-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads