tofsee | 362ef16713a9205e9a1160df602cf09107ddb1bab2b1dbe79d5b04f226cdbece

General

Target

2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe
Size

11.0MB
MD5

db790bf3ac4770ec2a11708dc44b6511
SHA1

fac61ca027009a01a31152e57088e8d06e51742b
SHA256

362ef16713a9205e9a1160df602cf09107ddb1bab2b1dbe79d5b04f226cdbece
SHA512

b0bd6cf5fb2ad7a230ce0dcbf5270b9e10caba9a2a5d8853d732faa16830b5a255c72c2302a9e74a14c952b5446f0f9f4c082831bd1f13c564650a0df5294f9d
SSDEEP

24576:H6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQw:aWdLQk

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
2028	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\rvjzsvc\ImagePath = "C:\\Windows\\SysWOW64\\rvjzsvc\\xtllixwk.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe

Deletes itself 1 IoCs

pid	Process
3608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4296	xtllixwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4296 set thread context of 3608	4296	xtllixwk.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3680	sc.exe
3588	sc.exe
5068	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
4180	4224	WerFault.exe	81
916	4296	WerFault.exe	94

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	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xtllixwk.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 2112	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	84
PID 4224 wrote to memory of 2112	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	84
PID 4224 wrote to memory of 2112	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	84
PID 4224 wrote to memory of 4584	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	86
PID 4224 wrote to memory of 4584	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	86
PID 4224 wrote to memory of 4584	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	86
PID 4224 wrote to memory of 3680	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	88
PID 4224 wrote to memory of 3680	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	88
PID 4224 wrote to memory of 3680	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	88
PID 4224 wrote to memory of 3588	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	90
PID 4224 wrote to memory of 3588	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	90
PID 4224 wrote to memory of 3588	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	90
PID 4224 wrote to memory of 5068	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	92
PID 4224 wrote to memory of 5068	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	92
PID 4224 wrote to memory of 5068	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	92
PID 4224 wrote to memory of 2028	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	95
PID 4224 wrote to memory of 2028	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	95
PID 4224 wrote to memory of 2028	4224	2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe	95
PID 4296 wrote to memory of 3608	4296	xtllixwk.exe	101
PID 4296 wrote to memory of 3608	4296	xtllixwk.exe	101
PID 4296 wrote to memory of 3608	4296	xtllixwk.exe	101
PID 4296 wrote to memory of 3608	4296	xtllixwk.exe	101
PID 4296 wrote to memory of 3608	4296	xtllixwk.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rvjzsvc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe" C:\Windows\SysWOW64\rvjzsvc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rvjzsvc binPath= "C:\Windows\SysWOW64\rvjzsvc\xtllixwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rvjzsvc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rvjzsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5068
- 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:2028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4224 -s 1044
  2⤵
  - Program crash
  PID:4180

C:\Windows\SysWOW64\rvjzsvc\xtllixwk.exe
C:\Windows\SysWOW64\rvjzsvc\xtllixwk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_db790bf3ac4770ec2a11708dc44b6511_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4296
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 508
  2⤵
  - Program crash
  PID:916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4224 -ip 4224
1⤵
PID:1220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4296 -ip 4296
1⤵
PID:2008

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\xtllixwk.exe

Filesize
13.8MB

MD5
fd6a280e5fff87a9f918e9ef3d084213

SHA1
ba66a7db8fd8907d793460708329f71f84e9af15

SHA256
cc8125d8df82f9a50e6dbb64c79ca62280c1c54e34d49be178d79547ee78e832

SHA512
b00cf8e2483f6b27d5463d9b86db53707e8d1568192df6b4b13ede7ca16bae50793e091a5996aeeeb7459481d09962ec43b94d1717b80d14d8e8049bc9a72547

Download Submit
memory/3608-14-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/3608-17-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/3608-16-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/4224-8-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4224-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4224-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4224-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4224-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4224-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4296-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4296-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4296-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4296-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads