Analysis Overview
SHA256
a998fde5f82f852df97cef9e0d2ed596f46eeb509a37c0603c92f5629098fac8
Threat Level: Known bad
The file c4fefd261e956faeb02c99c55eef2ad5 was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Modifies Windows Firewall
Creates new service(s)
Sets service image path in registry
Checks computer location settings
Deletes itself
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-13 04:37
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-13 04:37
Reported
2024-03-13 04:40
Platform
win7-20240221-en
Max time kernel
147s
Max time network
145s
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\kmvssopd = "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\kmvssopd\ImagePath = "C:\\Windows\\SysWOW64\\kmvssopd\\quxtfolh.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\kmvssopd\quxtfolh.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2552 set thread context of 2448 | N/A | C:\Windows\SysWOW64\kmvssopd\quxtfolh.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
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe
"C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kmvssopd\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\quxtfolh.exe" C:\Windows\SysWOW64\kmvssopd\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kmvssopd binPath= "C:\Windows\SysWOW64\kmvssopd\quxtfolh.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kmvssopd "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kmvssopd
C:\Windows\SysWOW64\kmvssopd\quxtfolh.exe
C:\Windows\SysWOW64\kmvssopd\quxtfolh.exe /d"C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe"
C:\Windows\SysWOW64\svchost.exe
svchost.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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.112.250.133:80 | 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 | 104.47.53.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 67.195.204.72:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 172.253.116.27:25 | 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 |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/2988-2-0x0000000003350000-0x0000000003450000-memory.dmp
memory/2988-3-0x0000000000220000-0x0000000000233000-memory.dmp
memory/2988-4-0x0000000000400000-0x000000000324F000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\quxtfolh.exe
| MD5 | c8baae233f440b597df98730722480e8 |
| SHA1 | 082d1de78cbdb34744939736b4039161ee5ee75c |
| SHA256 | 83a29fdb662bb14ffc9d39f3eb423dfed03f52cb15fdeeebda1c1028111d1934 |
| SHA512 | b4435e1d6133b1ed01e6764d4eebd2c4228d4d80cd463e04144020760d17e3da6084aafcdf2131764a000de86b40ea9420336a5555e0e57a1050e5d28e0dd711 |
memory/2552-8-0x0000000003340000-0x0000000003440000-memory.dmp
memory/2448-9-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2448-13-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2448-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2988-12-0x0000000000400000-0x000000000324F000-memory.dmp
memory/2552-15-0x0000000000400000-0x000000000324F000-memory.dmp
memory/2448-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2552-17-0x0000000000400000-0x000000000324F000-memory.dmp
memory/2448-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2448-21-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-13 04:37
Reported
2024-03-13 04:40
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
152s
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\mvepltlz\ImagePath = "C:\\Windows\\SysWOW64\\mvepltlz\\xkkihivv.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.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\mvepltlz\xkkihivv.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 5040 set thread context of 4492 | N/A | C:\Windows\SysWOW64\mvepltlz\xkkihivv.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
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe
"C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mvepltlz\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xkkihivv.exe" C:\Windows\SysWOW64\mvepltlz\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create mvepltlz binPath= "C:\Windows\SysWOW64\mvepltlz\xkkihivv.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description mvepltlz "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start mvepltlz
C:\Windows\SysWOW64\mvepltlz\xkkihivv.exe
C:\Windows\SysWOW64\mvepltlz\xkkihivv.exe /d"C:\Users\Admin\AppData\Local\Temp\c4fefd261e956faeb02c99c55eef2ad5.exe"
C:\Windows\SysWOW64\svchost.exe
svchost.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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.112.250.133:80 | 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 | 104.47.54.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 67.195.204.74:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 174.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 172.253.116.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | 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 | refabyd.info | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 50.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
Files
memory/5068-1-0x00000000032F0000-0x00000000033F0000-memory.dmp
memory/5068-2-0x0000000004F90000-0x0000000004FA3000-memory.dmp
memory/5068-4-0x0000000000400000-0x000000000324F000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\xkkihivv.exe
| MD5 | 859fc51b5793119a7d4ddaa96c4bef25 |
| SHA1 | f6431e4ffc2a0dc92150d70203557fe4b0734f46 |
| SHA256 | ad76dd0d7299b6d820ac03ae26d347d328eafe7024caf75226e227cfc6db0926 |
| SHA512 | 7f82bd1ec7125022123dbafdd7c13c669814e2dc40f985a53574ee056523721b973618bc99f9a3d8dd1ee4addbe5889818bcde111b26497f2e51d4f2c6f6eddc |
C:\Windows\SysWOW64\mvepltlz\xkkihivv.exe
| MD5 | c0323c5d9aa0656f5e5ba59e33dcc80a |
| SHA1 | 6ad8ec4831f974b755db2d761a88352c0b7d8374 |
| SHA256 | 4fb61549e1dd08081162daa605f98744ab6e0db292c03d0f34f342a91ee8cb10 |
| SHA512 | b2d40f2ef0340049c92543087194a46b1424adf78088e65b738e54c3177973e85e2ce7feaafd19fb87c46246b7d2d7c7b9ccdd36fb050e3290265cf46ea987b7 |
memory/5040-8-0x00000000034D0000-0x00000000035D0000-memory.dmp
memory/5040-9-0x00000000034B0000-0x00000000034C3000-memory.dmp
memory/4492-10-0x0000000000FA0000-0x0000000000FB5000-memory.dmp
memory/5040-15-0x0000000000400000-0x000000000324F000-memory.dmp
memory/5040-14-0x0000000000400000-0x000000000324F000-memory.dmp
memory/5068-13-0x0000000000400000-0x000000000324F000-memory.dmp
memory/4492-16-0x0000000000FA0000-0x0000000000FB5000-memory.dmp
memory/4492-17-0x0000000000FA0000-0x0000000000FB5000-memory.dmp
memory/4492-18-0x0000000000FA0000-0x0000000000FB5000-memory.dmp
memory/4492-19-0x0000000000FA0000-0x0000000000FB5000-memory.dmp