tofsee | 0ec58f18d7bf33a565b7bc3d959d05383b0db8427bb85a1c663054159dc52ba7

General

Target

2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe
Size

12.7MB
MD5

da9ecd37da34ab5dcc7aabf44ff60947
SHA1

f712618a365bdbfdccb76e2003661bee8dcccc17
SHA256

0ec58f18d7bf33a565b7bc3d959d05383b0db8427bb85a1c663054159dc52ba7
SHA512

cde6a14ed324c94eabf6f46e490de2b460d845fb6531e79126117105d0d9e0f428fb8120303c91a9d5cb3e67ac7b7dacb9526dd1d0a5c4893213694271ae14a4
SSDEEP

24576:+pomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttl:Soo

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
868	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\wlkjhvtv\ImagePath = "C:\\Windows\\SysWOW64\\wlkjhvtv\\vrjjgvui.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe

Deletes itself 1 IoCs

pid	Process
908	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4624	vrjjgvui.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4624 set thread context of 908	4624	vrjjgvui.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
2932	sc.exe
2920	sc.exe
1744	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
4696	4368	WerFault.exe	83
2504	4624	WerFault.exe	100

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vrjjgvui.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4368 wrote to memory of 4252	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	87
PID 4368 wrote to memory of 4252	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	87
PID 4368 wrote to memory of 4252	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	87
PID 4368 wrote to memory of 912	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	89
PID 4368 wrote to memory of 912	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	89
PID 4368 wrote to memory of 912	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	89
PID 4368 wrote to memory of 2920	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	92
PID 4368 wrote to memory of 2920	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	92
PID 4368 wrote to memory of 2920	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	92
PID 4368 wrote to memory of 1744	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	96
PID 4368 wrote to memory of 1744	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	96
PID 4368 wrote to memory of 1744	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	96
PID 4368 wrote to memory of 2932	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	98
PID 4368 wrote to memory of 2932	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	98
PID 4368 wrote to memory of 2932	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	98
PID 4368 wrote to memory of 868	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	101
PID 4368 wrote to memory of 868	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	101
PID 4368 wrote to memory of 868	4368	2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe	101
PID 4624 wrote to memory of 908	4624	vrjjgvui.exe	109
PID 4624 wrote to memory of 908	4624	vrjjgvui.exe	109
PID 4624 wrote to memory of 908	4624	vrjjgvui.exe	109
PID 4624 wrote to memory of 908	4624	vrjjgvui.exe	109
PID 4624 wrote to memory of 908	4624	vrjjgvui.exe	109

C:\Users\Admin\AppData\Local\Temp\2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wlkjhvtv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vrjjgvui.exe" C:\Windows\SysWOW64\wlkjhvtv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wlkjhvtv binPath= "C:\Windows\SysWOW64\wlkjhvtv\vrjjgvui.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wlkjhvtv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wlkjhvtv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- 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:868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4368 -s 1036
  2⤵
  - Program crash
  PID:4696

C:\Windows\SysWOW64\wlkjhvtv\vrjjgvui.exe
C:\Windows\SysWOW64\wlkjhvtv\vrjjgvui.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_da9ecd37da34ab5dcc7aabf44ff60947_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 528
  2⤵
  - Program crash
  PID:2504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4368 -ip 4368
1⤵
PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4624 -ip 4624
1⤵
PID:4932

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\vrjjgvui.exe

Filesize
13.5MB

MD5
3c14e1d5103b83a56c229a46671486be

SHA1
cdf7b5fe1c67a3ccf1220263f24bede051dcf98f

SHA256
11d354dfecc5a82deab7626005916ef86c4da7146b80da66cdc871ddc8e9e8de

SHA512
1f5a045afb7a216dfe11478c3f15cfe4bf94fb408aa3a3416648b4e85c66b078a57aca1a4f71ff667133c71c3b1da7c506dfe503201005f9afd1bc904708ab8c

Download Submit
memory/908-14-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/908-17-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/908-16-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/4368-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4368-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4368-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/4368-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4368-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4368-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4624-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4624-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4624-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4624-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads