tofsee | dc3d7c629554006086744cd6eebd0acffa1fb20bed484529bc6904c664a1f08c

General

Target

2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe
Size

13.7MB
MD5

11aeeea1fb4ac1baab9cddc4d9874697
SHA1

3780806f980d32c23d90be9e1b089909fa0e4675
SHA256

dc3d7c629554006086744cd6eebd0acffa1fb20bed484529bc6904c664a1f08c
SHA512

46bc88078b0ff654de1ed378f9c7ac348f3662f025f5be1cce9f22d2475430e316a86699877a694decd19f8c954aae15cd4c7c49b94db532d2233170589f7f7e
SSDEEP

49152:9qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:9qtYc30

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
2680	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\wxvkysdl\ImagePath = "C:\\Windows\\SysWOW64\\wxvkysdl\\wjvslydn.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe

Deletes itself 1 IoCs

pid	Process
1860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
264	wjvslydn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 264 set thread context of 1860	264	wjvslydn.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
2468	sc.exe
3772	sc.exe
4700	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
1972	264	WerFault.exe	95
2424	2176	WerFault.exe	84

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	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.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	netsh.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	wjvslydn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2052	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	85
PID 2176 wrote to memory of 2052	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	85
PID 2176 wrote to memory of 2052	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	85
PID 2176 wrote to memory of 2532	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	87
PID 2176 wrote to memory of 2532	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	87
PID 2176 wrote to memory of 2532	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	87
PID 2176 wrote to memory of 2468	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	89
PID 2176 wrote to memory of 2468	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	89
PID 2176 wrote to memory of 2468	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	89
PID 2176 wrote to memory of 3772	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	91
PID 2176 wrote to memory of 3772	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	91
PID 2176 wrote to memory of 3772	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	91
PID 2176 wrote to memory of 4700	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	93
PID 2176 wrote to memory of 4700	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	93
PID 2176 wrote to memory of 4700	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	93
PID 264 wrote to memory of 1860	264	wjvslydn.exe	96
PID 264 wrote to memory of 1860	264	wjvslydn.exe	96
PID 264 wrote to memory of 1860	264	wjvslydn.exe	96
PID 264 wrote to memory of 1860	264	wjvslydn.exe	96
PID 264 wrote to memory of 1860	264	wjvslydn.exe	96
PID 2176 wrote to memory of 2680	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	100
PID 2176 wrote to memory of 2680	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	100
PID 2176 wrote to memory of 2680	2176	2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxvkysdl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wjvslydn.exe" C:\Windows\SysWOW64\wxvkysdl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wxvkysdl binPath= "C:\Windows\SysWOW64\wxvkysdl\wjvslydn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wxvkysdl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wxvkysdl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4700
- 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:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2176 -s 592
  2⤵
  - Program crash
  PID:2424

C:\Windows\SysWOW64\wxvkysdl\wjvslydn.exe
C:\Windows\SysWOW64\wxvkysdl\wjvslydn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_11aeeea1fb4ac1baab9cddc4d9874697_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:264
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 264 -s 520
  2⤵
  - Program crash
  PID:1972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 264 -ip 264
1⤵
PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2176 -ip 2176
1⤵
PID:2972

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\wjvslydn.exe

Filesize
10.3MB

MD5
b1e4712e24c7b3b184452ef9b976e5e7

SHA1
4f1ee90dc05a8df78a88b8d17c5702ff7d320c7d

SHA256
0057edbb14725994c5fc6e21d41d8939e21585a070c554f8952473bd5c0f41c5

SHA512
af1e2553e91adac0c5ab19f52abf5d2fabe50ba56e72117a7b524349a7ce81d84209779bf4d5bc3dd40b307f1dae120bb9c4e9ccd16e14fc3eb55dc77bebbc65

Download Submit
memory/264-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/1860-8-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/1860-14-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/1860-15-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/2176-1-0x0000000002F40000-0x0000000003040000-memory.dmp

Filesize
1024KB

Download
memory/2176-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2176-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2176-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2176-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2176-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads