Analysis Overview
SHA256
162517397a17d464746d2457475be8ab091e8378303c7cdaf745bc238434c34a
Threat Level: Known bad
The file c51ba681e2a91256b750c02a07e71214 was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
Executes dropped EXE
Checks computer location settings
Deletes itself
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-13 05:37
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-13 05:37
Reported
2024-03-13 05:39
Platform
win7-20231129-en
Max time kernel
141s
Max time network
122s
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\qvykorol = "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\qvykorol\ImagePath = "C:\\Windows\\SysWOW64\\qvykorol\\axpgctpn.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\qvykorol\axpgctpn.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2596 set thread context of 2060 | N/A | C:\Windows\SysWOW64\qvykorol\axpgctpn.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\c51ba681e2a91256b750c02a07e71214.exe
"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qvykorol\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\axpgctpn.exe" C:\Windows\SysWOW64\qvykorol\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create qvykorol binPath= "C:\Windows\SysWOW64\qvykorol\axpgctpn.exe /d\"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description qvykorol "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start qvykorol
C:\Windows\SysWOW64\qvykorol\axpgctpn.exe
C:\Windows\SysWOW64\qvykorol\axpgctpn.exe /d"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.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 | 20.112.250.133:80 | 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 | 52.101.40.26:25 | microsoft-com.mail.protection.outlook.com | tcp |
| HK | 43.231.4.6:443 | tcp | |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 67.195.228.110:25 | 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 | 172.253.116.26:25 | smtp.google.com | tcp |
| HK | 43.231.4.6:443 | 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 |
| HK | 43.231.4.6:443 | tcp |
Files
memory/1724-1-0x0000000000D30000-0x0000000000E30000-memory.dmp
memory/1724-3-0x00000000003B0000-0x00000000003C3000-memory.dmp
memory/1724-4-0x0000000000400000-0x00000000008EA000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\axpgctpn.exe
| MD5 | 2a81fb773f4b158b162ae3d35600785b |
| SHA1 | edd6b84ac47540269cbe0272243868c987d43c8b |
| SHA256 | befbdcc3632041c7c4862253b3afd976906b3f4dcc4572f43058a0cf6cdda5f1 |
| SHA512 | 6221c2cbd74aa2b6662cb1c382456f353c6c34396872b227e098b2a71fda6be3270fdf9caa8a876f1f9072996b8ca13e91fdcb572d11ebaafc20643d2e219a08 |
memory/1724-7-0x0000000000400000-0x00000000008EA000-memory.dmp
memory/1724-8-0x0000000000D30000-0x0000000000E30000-memory.dmp
memory/2060-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2596-10-0x00000000009A0000-0x0000000000AA0000-memory.dmp
memory/2596-13-0x0000000000400000-0x00000000008EA000-memory.dmp
memory/2060-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2060-15-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2596-16-0x0000000000400000-0x00000000008EA000-memory.dmp
memory/2060-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2060-21-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2060-22-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-13 05:37
Reported
2024-03-13 05:39
Platform
win10v2004-20240226-en
Max time kernel
149s
Max time network
129s
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\kagofhvb\ImagePath = "C:\\Windows\\SysWOW64\\kagofhvb\\zvnltcfx.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\c51ba681e2a91256b750c02a07e71214.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\kagofhvb\zvnltcfx.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2536 set thread context of 3448 | N/A | C:\Windows\SysWOW64\kagofhvb\zvnltcfx.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
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\kagofhvb\zvnltcfx.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe
"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kagofhvb\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zvnltcfx.exe" C:\Windows\SysWOW64\kagofhvb\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kagofhvb binPath= "C:\Windows\SysWOW64\kagofhvb\zvnltcfx.exe /d\"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kagofhvb "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kagofhvb
C:\Windows\SysWOW64\kagofhvb\zvnltcfx.exe
C:\Windows\SysWOW64\kagofhvb\zvnltcfx.exe /d"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.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 440 -p 4860 -ip 4860
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1268
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2536 -ip 2536
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2536 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.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 | 52.101.40.26:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| HK | 43.231.4.6:443 | tcp | |
| 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 | 174.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 98.136.96.75:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 172.253.116.26:25 | smtp.google.com | tcp |
| HK | 43.231.4.6:443 | tcp | |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.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 | 48.229.111.52.in-addr.arpa | 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 |
| HK | 43.231.4.6:443 | tcp |
Files
memory/4860-1-0x0000000000B00000-0x0000000000C00000-memory.dmp
memory/4860-2-0x0000000002630000-0x0000000002643000-memory.dmp
memory/4860-4-0x0000000000400000-0x00000000008EA000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\zvnltcfx.exe
| MD5 | ca364612c10bdf26ba93719870454809 |
| SHA1 | f89c0517430c420f5d3c649d93bd8cb80a66c189 |
| SHA256 | 3c6d57e1b167abfac9572c921c788a0d51f503fee93ed3232ba58707ad03a9a7 |
| SHA512 | d4b502dccf4a890e487b42631166894a0b04e178a278ca457e3119213f8ff47e85c3ac477abab5a590f4791681eb96dddbbf42c6eeaddbd505b3e1d9218addc4 |
memory/4860-7-0x0000000000400000-0x00000000008EA000-memory.dmp
memory/4860-8-0x0000000002630000-0x0000000002643000-memory.dmp
memory/2536-10-0x00000000009F0000-0x0000000000AF0000-memory.dmp
memory/2536-11-0x0000000000400000-0x00000000008EA000-memory.dmp
memory/3448-12-0x00000000010C0000-0x00000000010D5000-memory.dmp
memory/3448-15-0x00000000010C0000-0x00000000010D5000-memory.dmp
memory/3448-16-0x00000000010C0000-0x00000000010D5000-memory.dmp
memory/2536-17-0x0000000000400000-0x00000000008EA000-memory.dmp
memory/3448-18-0x00000000010C0000-0x00000000010D5000-memory.dmp
memory/3448-19-0x00000000010C0000-0x00000000010D5000-memory.dmp