tofsee | b40f3f7f3e90e05e89b216f066aad486c83e27891c4bbacf77e9f134561e2bcc

General

Target

2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe
Size

12.5MB
MD5

2caa5dc4354f6e8da910c0914921bb6e
SHA1

8b2c8f2a0ddd71d875b51482563f1ccf5478acec
SHA256

b40f3f7f3e90e05e89b216f066aad486c83e27891c4bbacf77e9f134561e2bcc
SHA512

2f89ca08502440798fa6098e158997845269c3f632fc6948271ce5ec876b4036e5e79137757473f378384d26c8df34967b0a3f78378b5bce6cacdc7f75b410e7
SSDEEP

393216:+XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXs:f

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
64	5088	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3308	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\vhgsygft\ImagePath = "C:\\Windows\\SysWOW64\\vhgsygft\\myxlwgoi.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-1-5-21-1318997816-2171176372-1451785247-1000\Control Panel\International\Geo\Nation	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe

Deletes itself 1 IoCs

pid	Process
4852	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	myxlwgoi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3608 set thread context of 4852	3608	myxlwgoi.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
3688	sc.exe
4964	sc.exe
3204	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.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	myxlwgoi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4144	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 1560	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	88
PID 3056 wrote to memory of 1560	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	88
PID 3056 wrote to memory of 1560	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	88
PID 3056 wrote to memory of 1516	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	90
PID 3056 wrote to memory of 1516	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	90
PID 3056 wrote to memory of 1516	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	90
PID 3056 wrote to memory of 3688	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	92
PID 3056 wrote to memory of 3688	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	92
PID 3056 wrote to memory of 3688	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	92
PID 3056 wrote to memory of 4964	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	94
PID 3056 wrote to memory of 4964	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	94
PID 3056 wrote to memory of 4964	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	94
PID 3056 wrote to memory of 3204	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	96
PID 3056 wrote to memory of 3204	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	96
PID 3056 wrote to memory of 3204	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	96
PID 3608 wrote to memory of 4852	3608	myxlwgoi.exe	99
PID 3608 wrote to memory of 4852	3608	myxlwgoi.exe	99
PID 3608 wrote to memory of 4852	3608	myxlwgoi.exe	99
PID 3608 wrote to memory of 4852	3608	myxlwgoi.exe	99
PID 3608 wrote to memory of 4852	3608	myxlwgoi.exe	99
PID 3056 wrote to memory of 3308	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	100
PID 3056 wrote to memory of 3308	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	100
PID 3056 wrote to memory of 3308	3056	2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vhgsygft\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\myxlwgoi.exe" C:\Windows\SysWOW64\vhgsygft\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vhgsygft binPath= "C:\Windows\SysWOW64\vhgsygft\myxlwgoi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vhgsygft "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vhgsygft
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3204
- 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:3308

C:\Windows\SysWOW64\vhgsygft\myxlwgoi.exe
C:\Windows\SysWOW64\vhgsygft\myxlwgoi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-13_2caa5dc4354f6e8da910c0914921bb6e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4852

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1Mjk2NTQxMDc0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4144

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\myxlwgoi.exe

Filesize
11.4MB

MD5
da5065ed36f6027815412c9f3a7fc5f5

SHA1
00651175ff2cae6e73d6948dad568d1fcd0b6c5d

SHA256
ff4b5a6d937a950ecc3a31ad6996c3ea9252200f69c98ac00f8a5d5e19026da2

SHA512
bee8412200d011039d6ea8fceb65c4871646840a5d777292341f4deda23210ea37b2628709dd531fd3e3a49787838d43dd1d0b3f60d433c6ba8bc0e0f641f4c3

Download Submit
memory/3056-18-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download
memory/3056-2-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download
memory/3056-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3056-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/3056-13-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/3056-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3056-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3608-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3608-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3608-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4852-14-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4852-10-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4852-20-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4852-21-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4852-22-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads