tofsee | 287962ba40eaba4f8949856164294a653df5b4ae7b5a467267e4b222aababd8b

Analysis

max time kernel
148s
max time network
128s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26/12/2024, 20:42 UTC

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General

Target

2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe
Size

12.0MB
MD5

eb73cb7808742759b55e8028762c9848
SHA1

e1e94764c7eaa1821b4471b4946dd085b39747f4
SHA256

287962ba40eaba4f8949856164294a653df5b4ae7b5a467267e4b222aababd8b
SHA512

36baa7989339d158bd4053d7445893787fbc0dc4e49a0e4f94af4e09e868465f9226bc7c0ea113c70835f0508e312707f3bfbe97695b71e26403d2f7d3ef0ba3
SSDEEP

3072:TLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:aOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion 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

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\gvnczulx = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2624	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\gvnczulx\ImagePath = "C:\\Windows\\SysWOW64\\gvnczulx\\ktnskjea.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2604	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2692	ktnskjea.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2692 set thread context of 2604	2692	ktnskjea.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2780	sc.exe
2932	sc.exe
2788	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_eb73cb7808742759b55e8028762c9848_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ktnskjea.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 2848	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	30
PID 2448 wrote to memory of 2848	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	30
PID 2448 wrote to memory of 2848	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	30
PID 2448 wrote to memory of 2848	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	30
PID 2448 wrote to memory of 2628	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	32
PID 2448 wrote to memory of 2628	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	32
PID 2448 wrote to memory of 2628	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	32
PID 2448 wrote to memory of 2628	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	32
PID 2448 wrote to memory of 2780	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	34
PID 2448 wrote to memory of 2780	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	34
PID 2448 wrote to memory of 2780	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	34
PID 2448 wrote to memory of 2780	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	34
PID 2448 wrote to memory of 2932	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	36
PID 2448 wrote to memory of 2932	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	36
PID 2448 wrote to memory of 2932	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	36
PID 2448 wrote to memory of 2932	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	36
PID 2448 wrote to memory of 2788	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	38
PID 2448 wrote to memory of 2788	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	38
PID 2448 wrote to memory of 2788	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	38
PID 2448 wrote to memory of 2788	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	38
PID 2448 wrote to memory of 2624	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	40
PID 2448 wrote to memory of 2624	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	40
PID 2448 wrote to memory of 2624	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	40
PID 2448 wrote to memory of 2624	2448	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	40
PID 2692 wrote to memory of 2604	2692	ktnskjea.exe	43
PID 2692 wrote to memory of 2604	2692	ktnskjea.exe	43
PID 2692 wrote to memory of 2604	2692	ktnskjea.exe	43
PID 2692 wrote to memory of 2604	2692	ktnskjea.exe	43
PID 2692 wrote to memory of 2604	2692	ktnskjea.exe	43
PID 2692 wrote to memory of 2604	2692	ktnskjea.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gvnczulx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ktnskjea.exe" C:\Windows\SysWOW64\gvnczulx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gvnczulx binPath= "C:\Windows\SysWOW64\gvnczulx\ktnskjea.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gvnczulx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gvnczulx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- 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:2624

C:\Windows\SysWOW64\gvnczulx\ktnskjea.exe
C:\Windows\SysWOW64\gvnczulx\ktnskjea.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- 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:2604

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.76.201.171

microsoft.com

IN A

20.112.250.133

microsoft.com

IN A

20.236.44.162

microsoft.com

IN A

20.70.246.20

microsoft.com

IN A

20.231.239.246
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

52.101.40.26

microsoft-com.mail.protection.outlook.com

IN A

52.101.11.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.8.49

microsoft-com.mail.protection.outlook.com

IN A

52.101.42.0
DNS

yahoo.com

svchost.exe

Remote address:

8.8.8.8:53

Request

yahoo.com

IN MX

Response

yahoo.com

IN MX

mta6am0yahoodnsnet

yahoo.com

IN MX

mta7�.

yahoo.com

IN MX

mta5�.
DNS

mta6.am0.yahoodns.net

svchost.exe

Remote address:

8.8.8.8:53

Request

mta6.am0.yahoodns.net

IN A

Response

mta6.am0.yahoodns.net

IN A

67.195.228.94

mta6.am0.yahoodns.net

IN A

67.195.204.72

mta6.am0.yahoodns.net

IN A

67.195.204.74

mta6.am0.yahoodns.net

IN A

98.136.96.91

mta6.am0.yahoodns.net

IN A

67.195.228.111

mta6.am0.yahoodns.net

IN A

67.195.228.106

mta6.am0.yahoodns.net

IN A

98.136.96.77

mta6.am0.yahoodns.net

IN A

98.136.96.75
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

142.250.102.27

smtp.google.com

IN A

142.250.27.27

smtp.google.com

IN A

142.250.27.26

smtp.google.com

IN A

142.250.102.26
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

94.100.180.31

mxs.mail.ru

IN A

217.69.139.150

20.76.201.171:80

microsoft.com

svchost.exe

190 B
92 B
4
2
52.101.40.26:25

microsoft-com.mail.protection.outlook.com

svchost.exe

152 B
3
43.231.4.7:443

svchost.exe

152 B
3
67.195.228.94:25

mta6.am0.yahoodns.net

svchost.exe

152 B
3
142.250.102.27:25

smtp.google.com

svchost.exe

152 B
3
43.231.4.7:443

svchost.exe

152 B
3
94.100.180.31:25

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

20.76.201.171

20.112.250.133

20.236.44.162

20.70.246.20

20.231.239.246
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

52.101.40.26

52.101.11.0

52.101.8.49

52.101.42.0
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

mta6.am0.yahoodns.net

dns

svchost.exe

67 B
195 B
1
1

DNS Request

mta6.am0.yahoodns.net

DNS Response

67.195.228.94

67.195.204.72

67.195.204.74

98.136.96.91

67.195.228.111

67.195.228.106

98.136.96.77

98.136.96.75
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
125 B
1
1

DNS Request

smtp.google.com

DNS Response

142.250.102.27

142.250.27.27

142.250.27.26

142.250.102.26
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

94.100.180.31

217.69.139.150

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\ktnskjea.exe

Filesize
12.2MB

MD5
1191304561e1a1c77c9d4dd5bdab0d27

SHA1
c7bbe9fa83757f6286a53daf14c193d6b700f62c

SHA256
d67388ec3b91421ee068477e5170d1bff68d8d0cd580cff790a811bafab400b6

SHA512
65f220531455f87d4e87b1542b786ae8879d4a6262b92b9be5f677cde4a5a397f1b37b32a507ca82b63abcae346f71f5a0620148bcd7c2ca60c186110bcdbbdf

Download Submit
memory/2448-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2448-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2448-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2448-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2448-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2448-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/2604-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2604-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2604-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2604-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2692-16-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

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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Downloads

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