Analysis Overview
SHA256
f7125d45e932372653f44576caa67bed861e3c43cfbeb780e94db7bf1166ff11
Threat Level: Known bad
The file c60a9d97501c8fccb7ce37b52654839b.zip was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Sets service image path in registry
Creates new service(s)
Modifies Windows Firewall
Checks computer location settings
Deletes itself
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
Program crash
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-31 15:23
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-31 15:23
Reported
2024-08-31 15:25
Platform
win7-20240708-en
Max time kernel
146s
Max time network
155s
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\zisddkvo = "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\zisddkvo\ImagePath = "C:\\Windows\\SysWOW64\\zisddkvo\\tyumknz.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\zisddkvo\tyumknz.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2692 set thread context of 2668 | N/A | C:\Windows\SysWOW64\zisddkvo\tyumknz.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 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 |
| Key opened | \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:\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\zisddkvo\tyumknz.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:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe
"C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zisddkvo\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tyumknz.exe" C:\Windows\SysWOW64\zisddkvo\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zisddkvo binPath= "C:\Windows\SysWOW64\zisddkvo\tyumknz.exe /d\"C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zisddkvo "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zisddkvo
C:\Windows\SysWOW64\zisddkvo\tyumknz.exe
C:\Windows\SysWOW64\zisddkvo\tyumknz.exe /d"C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.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 |
| NL | 20.76.201.171:80 | 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 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 98.136.96.74:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 74.125.143.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/2488-1-0x0000000000530000-0x0000000000630000-memory.dmp
memory/2488-2-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2488-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tyumknz.exe
| MD5 | f6617608cfc6d29c9c54e58e60a3a7e5 |
| SHA1 | fabd105b2e48ce804c5cf5c240c942e1877ed607 |
| SHA256 | d5282c622568cdea0bb2c20ca25c72ef692bb533c724f3a52167e82e2dc920ce |
| SHA512 | 2ace2a043e9a0d7b09a75a2e70d341f2048eec868ca0e585de1ecc0b598bcfff0052200f91b1303d5124fa443270dbc28affad75a11e7c1e8dc89fc1bd004a97 |
memory/2488-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2488-9-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2488-8-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2668-16-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2668-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2668-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2668-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2692-17-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2668-18-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-31 15:23
Reported
2024-08-31 15:25
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\urdlswwp\ImagePath = "C:\\Windows\\SysWOW64\\urdlswwp\\qvrjhkw.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.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\urdlswwp\qvrjhkw.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 404 set thread context of 732 | N/A | C:\Windows\SysWOW64\urdlswwp\qvrjhkw.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\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\urdlswwp\qvrjhkw.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\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.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\urdlswwp\qvrjhkw.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\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\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe
"C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\urdlswwp\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qvrjhkw.exe" C:\Windows\SysWOW64\urdlswwp\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create urdlswwp binPath= "C:\Windows\SysWOW64\urdlswwp\qvrjhkw.exe /d\"C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description urdlswwp "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start urdlswwp
C:\Windows\SysWOW64\urdlswwp\qvrjhkw.exe
C:\Windows\SysWOW64\urdlswwp\qvrjhkw.exe /d"C:\Users\Admin\AppData\Local\Temp\f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02.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 444 -p 3548 -ip 3548
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3548 -s 1176
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 404 -ip 404
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 404 -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 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| AU | 20.70.246.20:80 | 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 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.246.70.20.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 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 67.195.228.111:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.12.20.2.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 |
| NL | 173.194.69.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | 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/3548-1-0x00000000006F0000-0x00000000007F0000-memory.dmp
memory/3548-2-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/3548-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\qvrjhkw.exe
| MD5 | 650b436122aa0dfaa27e48b6135a03d6 |
| SHA1 | 5c5262d8b20c7830f49e35939b3db9c688bd881e |
| SHA256 | 8612e4ed35a9111fe6d78c065e80b637cbeee25d4b17a709687792b74fcf3f7a |
| SHA512 | 2419fa865c04bc0e9bce3b3f6cc79d03f085508602db5e56daadb9c7940c6650a94279c11acf3a375c41419a51bd60ce9b0e5c75f070b382675eac90e6927337 |
memory/3548-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/3548-9-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/3548-8-0x0000000000400000-0x0000000000441000-memory.dmp
memory/404-12-0x0000000000400000-0x0000000000441000-memory.dmp
memory/404-11-0x0000000000400000-0x0000000000441000-memory.dmp
memory/404-13-0x0000000000400000-0x0000000000441000-memory.dmp
memory/732-14-0x0000000000410000-0x0000000000425000-memory.dmp
memory/732-16-0x0000000000410000-0x0000000000425000-memory.dmp
memory/732-17-0x0000000000410000-0x0000000000425000-memory.dmp
memory/404-19-0x0000000000400000-0x0000000000441000-memory.dmp