Analysis Overview
SHA256
f8d31e6775488ad2285818fdd4b9bb4f1480a453758a29a3755f4376954e8644
Threat Level: Known bad
The file f8d31e6775488ad2285818fdd4b9bb4f1480a453758a29a3755f4376954e8644 was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Modifies Windows Firewall
Sets service image path in registry
Creates new service(s)
Checks computer location settings
Deletes itself
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Event Triggered Execution: Netsh Helper DLL
Program crash
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-01 01:35
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-01 01:35
Reported
2024-09-01 01:38
Platform
win7-20240705-en
Max time kernel
149s
Max time network
154s
Command Line
Signatures
Tofsee
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\slyrveol = "0" | C:\Windows\SysWOW64\svchost.exe | N/A |
Creates new service(s)
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\slyrveol\ImagePath = "C:\\Windows\\SysWOW64\\slyrveol\\yhqymemv.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\slyrveol\yhqymemv.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2704 set thread context of 2784 | N/A | C:\Windows\SysWOW64\slyrveol\yhqymemv.exe | C:\Windows\SysWOW64\svchost.exe |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\slyrveol\yhqymemv.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe
"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\slyrveol\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yhqymemv.exe" C:\Windows\SysWOW64\slyrveol\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create slyrveol binPath= "C:\Windows\SysWOW64\slyrveol\yhqymemv.exe /d\"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description slyrveol "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start slyrveol
C:\Windows\SysWOW64\slyrveol\yhqymemv.exe
C:\Windows\SysWOW64\slyrveol\yhqymemv.exe /d"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe"
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
C:\Windows\SysWOW64\svchost.exe
svchost.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.236.44.162:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 52.101.42.0:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 98.136.96.91:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 173.194.79.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 94.100.180.31:25 | mxs.mail.ru | tcp |
Files
memory/2868-1-0x0000000000250000-0x0000000000350000-memory.dmp
memory/2868-2-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2868-4-0x0000000000400000-0x00000000016BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\yhqymemv.exe
| MD5 | 813c8875152bcea613c348f63b5d0077 |
| SHA1 | adfb16d1f34fc2551605f668afcfe6fdc8ea01fe |
| SHA256 | 7161a89ba677dbc3bfc774b6c8fe28cbbb8ce7edb4b8198d85fc6e1c9d855096 |
| SHA512 | d793042a1cc39406325416431f1701e7c9069f5ce89e75db129aeb827ede04eea2ff0278f6429bdcdbfce3e472fbe9629450cb1ff70cd5b11947107a6403484a |
memory/2868-8-0x0000000000400000-0x00000000016BD000-memory.dmp
memory/2868-9-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2868-10-0x0000000000250000-0x0000000000350000-memory.dmp
memory/2784-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2784-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2784-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2784-16-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2704-17-0x0000000000400000-0x00000000016BD000-memory.dmp
memory/2784-18-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-01 01:35
Reported
2024-09-01 01:38
Platform
win10v2004-20240802-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Tofsee
Creates new service(s)
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\pozftddj\ImagePath = "C:\\Windows\\SysWOW64\\pozftddj\\tinoiqtm.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4460 set thread context of 1912 | N/A | C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe | C:\Windows\SysWOW64\svchost.exe |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe
"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pozftddj\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tinoiqtm.exe" C:\Windows\SysWOW64\pozftddj\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create pozftddj binPath= "C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe /d\"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description pozftddj "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start pozftddj
C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe
C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe /d"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe"
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
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4988 -ip 4988
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 1268
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4460 -ip 4460
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.236.44.162:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 52.101.11.0:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 162.44.236.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 67.195.228.94:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 108.177.96.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 94.100.180.31:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
Files
memory/4988-1-0x0000000001790000-0x0000000001890000-memory.dmp
memory/4988-2-0x0000000003400000-0x0000000003413000-memory.dmp
memory/4988-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tinoiqtm.exe
| MD5 | c819c4f2e4c10227c5dca3ab67e19bda |
| SHA1 | 4357d4d60c8d4d5728340cfac7ba1e9a7ee3428f |
| SHA256 | c7c0c8ae2366ef73c263fc7c39a874fc8f818920e89633b4ef7188e4ffe17472 |
| SHA512 | f08ac3424c3bfec9d75c1579a6f74bb9a1f227a3091a4b279e0d56ed5e3b535ce942a600288835c32b6ffe25a205ceaea34b32e9b094180478224e90dbe02b2c |
memory/4988-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/4988-9-0x0000000003400000-0x0000000003413000-memory.dmp
memory/4988-8-0x0000000000400000-0x00000000016BD000-memory.dmp
memory/1912-11-0x0000000000830000-0x0000000000845000-memory.dmp
memory/1912-13-0x0000000000830000-0x0000000000845000-memory.dmp
memory/4460-14-0x0000000000400000-0x00000000016BD000-memory.dmp
memory/1912-15-0x0000000000830000-0x0000000000845000-memory.dmp
memory/4460-16-0x0000000000400000-0x00000000016BD000-memory.dmp