tofsee | 7361cc6e57468a8f812fb6174a3ca3081d136942c82a2cf6250e8eabdb9b0aee

Analysis

max time kernel
145s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
27/12/2024, 20:40 UTC

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General

Target

2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe
Size

12.1MB
MD5

bf0482b484090d1a7804ebb245a98bb1
SHA1

9bde15de16971320eb45314538f3916547f85e4c
SHA256

7361cc6e57468a8f812fb6174a3ca3081d136942c82a2cf6250e8eabdb9b0aee
SHA512

cd6d9cf4d3a89a93f1274b2e85ce54f396c6aa3b573c93b8b30cbac6e229915b39c714d14befbf1e91a93abbac9aeec8cf589972665e1d32c60cea1da9c5b310
SSDEEP

3072:/LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:2OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\oysggfmi = "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
484	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\oysggfmi\ImagePath = "C:\\Windows\\SysWOW64\\oysggfmi\\cexipxlb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2492	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2724	cexipxlb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2492	2724	cexipxlb.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2988	sc.exe
2716	sc.exe
2672	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	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cexipxlb.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 2392	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	30
PID 2952 wrote to memory of 2392	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	30
PID 2952 wrote to memory of 2392	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	30
PID 2952 wrote to memory of 2392	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	30
PID 2952 wrote to memory of 2964	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	32
PID 2952 wrote to memory of 2964	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	32
PID 2952 wrote to memory of 2964	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	32
PID 2952 wrote to memory of 2964	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	32
PID 2952 wrote to memory of 2988	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	34
PID 2952 wrote to memory of 2988	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	34
PID 2952 wrote to memory of 2988	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	34
PID 2952 wrote to memory of 2988	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	34
PID 2952 wrote to memory of 2716	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	36
PID 2952 wrote to memory of 2716	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	36
PID 2952 wrote to memory of 2716	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	36
PID 2952 wrote to memory of 2716	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	36
PID 2952 wrote to memory of 2672	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	38
PID 2952 wrote to memory of 2672	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	38
PID 2952 wrote to memory of 2672	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	38
PID 2952 wrote to memory of 2672	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	38
PID 2724 wrote to memory of 2492	2724	cexipxlb.exe	41
PID 2724 wrote to memory of 2492	2724	cexipxlb.exe	41
PID 2724 wrote to memory of 2492	2724	cexipxlb.exe	41
PID 2724 wrote to memory of 2492	2724	cexipxlb.exe	41
PID 2724 wrote to memory of 2492	2724	cexipxlb.exe	41
PID 2724 wrote to memory of 2492	2724	cexipxlb.exe	41
PID 2952 wrote to memory of 484	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	42
PID 2952 wrote to memory of 484	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	42
PID 2952 wrote to memory of 484	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	42
PID 2952 wrote to memory of 484	2952	2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oysggfmi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cexipxlb.exe" C:\Windows\SysWOW64\oysggfmi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oysggfmi binPath= "C:\Windows\SysWOW64\oysggfmi\cexipxlb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oysggfmi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oysggfmi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2672
- 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:484

C:\Windows\SysWOW64\oysggfmi\cexipxlb.exe
C:\Windows\SysWOW64\oysggfmi\cexipxlb.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- 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:2492

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

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

microsoft.com

IN A

20.236.44.162
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

52.101.8.49

microsoft-com.mail.protection.outlook.com

IN A

52.101.42.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.11.0
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

98.136.96.91

mta7.am0.yahoodns.net

IN A

98.136.96.74

mta7.am0.yahoodns.net

IN A

67.195.204.73

mta7.am0.yahoodns.net

IN A

67.195.228.110

mta7.am0.yahoodns.net

IN A

98.136.96.76

mta7.am0.yahoodns.net

IN A

67.195.204.74

mta7.am0.yahoodns.net

IN A

98.136.96.77

mta7.am0.yahoodns.net

IN A

67.195.228.94
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

142.250.102.26

smtp.google.com

IN A

142.250.27.26

smtp.google.com

IN A

142.250.27.27
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

20.112.250.133:80

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
98.136.96.91:25

mta7.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
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

20.112.250.133

20.231.239.246

20.76.201.171

20.70.246.20

20.236.44.162
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

52.101.8.49

52.101.42.0

52.101.11.0
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

mta7.am0.yahoodns.net

dns

svchost.exe

67 B
195 B
1
1

DNS Request

mta7.am0.yahoodns.net

DNS Response

98.136.96.91

98.136.96.74

67.195.204.73

67.195.228.110

98.136.96.76

67.195.204.74

98.136.96.77

67.195.228.94
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

142.250.102.26

142.250.27.26

142.250.27.27
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\cexipxlb.exe

Filesize
14.5MB

MD5
10a847cf732d4b09d0f4ed2cf9e3f366

SHA1
ab17a2871d472a67d49beab1b21e0932e4f5d2b5

SHA256
9c317f43e6ffb7ea959352573828f7f5398866eefb0a4b7294a7480ba6b20b31

SHA512
8255349528f388a520d3333eca762078869e39b71843c19fb4699f5201367ff9686f2dfed184aabb50149c498bb2e8905ff05177aacf4a781c9514a6532033bc

Download Submit
memory/2492-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2492-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2492-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2492-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2492-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2724-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2952-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2952-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2952-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/2952-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2952-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2952-16-0x0000000000400000-0x0000000000415000-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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