tofsee | 07624eb5d8e98eb16931b1d103e293f60cb1e832ada9c57bc9b188ef04d99511

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31/01/2025, 05:25 UTC

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General

Target

2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe
Size

10.2MB
MD5

17cdf5af0f3bbd44fe4a61faee6c856e
SHA1

7cfd9c4f5cb3b202aa5abe7b39dd17c429fb6098
SHA256

07624eb5d8e98eb16931b1d103e293f60cb1e832ada9c57bc9b188ef04d99511
SHA512

adcce1d8653628e6b9faa870e1042cf8cb3521b05653d0af6a7e753558a6eeb91e523a329af0773962a4d73d2037c9c36d8b38d98f9192f940a3f7f92e547a03
SSDEEP

24576:RpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttD:roo9

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\vonoqdwl = "0"	svchost.exe

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
2784	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\vonoqdwl\ImagePath = "C:\\Windows\\SysWOW64\\vonoqdwl\\vmuscxes.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2984	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	vmuscxes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 2984	2596	vmuscxes.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2332	sc.exe
2380	sc.exe
2584	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 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	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.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	vmuscxes.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2768	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	30
PID 2396 wrote to memory of 2768	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	30
PID 2396 wrote to memory of 2768	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	30
PID 2396 wrote to memory of 2768	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	30
PID 2396 wrote to memory of 2708	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	32
PID 2396 wrote to memory of 2708	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	32
PID 2396 wrote to memory of 2708	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	32
PID 2396 wrote to memory of 2708	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	32
PID 2396 wrote to memory of 2380	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	34
PID 2396 wrote to memory of 2380	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	34
PID 2396 wrote to memory of 2380	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	34
PID 2396 wrote to memory of 2380	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	34
PID 2396 wrote to memory of 2584	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	36
PID 2396 wrote to memory of 2584	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	36
PID 2396 wrote to memory of 2584	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	36
PID 2396 wrote to memory of 2584	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	36
PID 2396 wrote to memory of 2332	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	38
PID 2396 wrote to memory of 2332	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	38
PID 2396 wrote to memory of 2332	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	38
PID 2396 wrote to memory of 2332	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	38
PID 2396 wrote to memory of 2784	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	41
PID 2396 wrote to memory of 2784	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	41
PID 2396 wrote to memory of 2784	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	41
PID 2396 wrote to memory of 2784	2396	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	41
PID 2596 wrote to memory of 2984	2596	vmuscxes.exe	43
PID 2596 wrote to memory of 2984	2596	vmuscxes.exe	43
PID 2596 wrote to memory of 2984	2596	vmuscxes.exe	43
PID 2596 wrote to memory of 2984	2596	vmuscxes.exe	43
PID 2596 wrote to memory of 2984	2596	vmuscxes.exe	43
PID 2596 wrote to memory of 2984	2596	vmuscxes.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vonoqdwl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vmuscxes.exe" C:\Windows\SysWOW64\vonoqdwl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vonoqdwl binPath= "C:\Windows\SysWOW64\vonoqdwl\vmuscxes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vonoqdwl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vonoqdwl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2332
- 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:2784

C:\Windows\SysWOW64\vonoqdwl\vmuscxes.exe
C:\Windows\SysWOW64\vonoqdwl\vmuscxes.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2984

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.236.44.162

microsoft.com

IN A

20.112.250.133

microsoft.com

IN A

20.231.239.246

microsoft.com

IN A

20.76.201.171

microsoft.com

IN A

20.70.246.20
DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN MX

Response

microsoft.com

IN MX

microsoft-commail protectionoutlook�
DNS

microsoft-com.mail.protection.outlook.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft-com.mail.protection.outlook.com

IN A

Response

microsoft-com.mail.protection.outlook.com

IN A

52.101.11.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.42.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.8.49

microsoft-com.mail.protection.outlook.com

IN A

52.101.40.26
DNS

yahoo.com

svchost.exe

Remote address:

8.8.8.8:53

Request

yahoo.com

IN MX

Response

yahoo.com

IN MX

mta7am0yahoodnsnet

yahoo.com

IN MX

mta6�.

yahoo.com

IN MX

mta5�.
DNS

mta7.am0.yahoodns.net

svchost.exe

Remote address:

8.8.8.8:53

Request

mta7.am0.yahoodns.net

IN A

Response

mta7.am0.yahoodns.net

IN A

67.195.228.111

mta7.am0.yahoodns.net

IN A

98.136.96.76

mta7.am0.yahoodns.net

IN A

67.195.228.109

mta7.am0.yahoodns.net

IN A

67.195.228.110

mta7.am0.yahoodns.net

IN A

98.136.96.75

mta7.am0.yahoodns.net

IN A

67.195.228.94

mta7.am0.yahoodns.net

IN A

67.195.204.72

mta7.am0.yahoodns.net

IN A

67.195.228.106
DNS

google.com

svchost.exe

Remote address:

8.8.8.8:53

Request

google.com

IN MX

Response

google.com

IN MX

smtp�
DNS

smtp.google.com

svchost.exe

Remote address:

8.8.8.8:53

Request

smtp.google.com

IN A

Response

smtp.google.com

IN A

64.233.166.27

smtp.google.com

IN A

64.233.166.26

smtp.google.com

IN A

74.125.133.27

smtp.google.com

IN A

74.125.71.26

smtp.google.com

IN A

74.125.71.27
DNS

mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mail.ru

IN MX

Response

mail.ru

IN MX

mxs�
DNS

mxs.mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mxs.mail.ru

IN A

Response

mxs.mail.ru

IN A

217.69.139.150

mxs.mail.ru

IN A

94.100.180.31

20.236.44.162:80

microsoft.com

svchost.exe

190 B
92 B
4
2
52.101.11.0:25

microsoft-com.mail.protection.outlook.com

svchost.exe

152 B
3
43.231.4.7:443

svchost.exe

152 B
3
67.195.228.111:25

mta7.am0.yahoodns.net

svchost.exe

152 B
3
64.233.166.27:25

smtp.google.com

svchost.exe

152 B
3
43.231.4.7:443

svchost.exe

152 B
3
217.69.139.150:25

mxs.mail.ru

svchost.exe

152 B
3
43.231.4.7:443

svchost.exe

152 B
3

8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
139 B
1
1

DNS Request

microsoft.com

DNS Response

20.236.44.162

20.112.250.133

20.231.239.246

20.76.201.171

20.70.246.20
8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
113 B
1
1

DNS Request

microsoft.com
8.8.8.8:53

microsoft-com.mail.protection.outlook.com

dns

svchost.exe

87 B
151 B
1
1

DNS Request

microsoft-com.mail.protection.outlook.com

DNS Response

52.101.11.0

52.101.42.0

52.101.8.49

52.101.40.26
8.8.8.8:53

yahoo.com

dns

svchost.exe

55 B
134 B
1
1

DNS Request

yahoo.com
8.8.8.8:53

mta7.am0.yahoodns.net

dns

svchost.exe

67 B
195 B
1
1

DNS Request

mta7.am0.yahoodns.net

DNS Response

67.195.228.111

98.136.96.76

67.195.228.109

67.195.228.110

98.136.96.75

67.195.228.94

67.195.204.72

67.195.228.106
8.8.8.8:53

google.com

dns

svchost.exe

56 B
77 B
1
1

DNS Request

google.com
8.8.8.8:53

smtp.google.com

dns

svchost.exe

61 B
141 B
1
1

DNS Request

smtp.google.com

DNS Response

64.233.166.27

64.233.166.26

74.125.133.27

74.125.71.26

74.125.71.27
8.8.8.8:53

mail.ru

dns

svchost.exe

53 B
73 B
1
1

DNS Request

mail.ru
8.8.8.8:53

mxs.mail.ru

dns

svchost.exe

57 B
89 B
1
1

DNS Request

mxs.mail.ru

DNS Response

217.69.139.150

94.100.180.31

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.4MB

MD5
73df60e5af62b9ce688b9d1e2462202a

SHA1
beb324941a56ac1cc15e842b29013699c56472de

SHA256
9712a11f47b4ce498b1b172895fd2e194d1f783407e518df132286784f2894df

SHA512
67a3b17787be3e04c6447e801227acee57360d3710d9243d8e222adf5c9eda3065667813204e1774852a47d03217af08375deebb18bdb8e50963836af784a4ee

Download Submit
memory/2396-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2396-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2396-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2396-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2396-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2396-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2596-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2984-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2984-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2984-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2984-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2984-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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