Analysis Overview
SHA256
773a44dcd8fd25f6e2d323ff3c44c8496881a3a9e4eb447894cc88cbd197dd17
Threat Level: Known bad
The file decd65be2a38b9f4ebb3f2b71fc31660 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)
Deletes itself
Checks computer location settings
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
2024-03-26 09:12
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-26 09:12
Reported
2024-03-26 09:14
Platform
win7-20240221-en
Max time kernel
149s
Max time network
147s
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\xvizvopl = "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\xvizvopl\ImagePath = "C:\\Windows\\SysWOW64\\xvizvopl\\bwgjxiiq.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\xvizvopl\bwgjxiiq.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2420 set thread context of 2648 | N/A | C:\Windows\SysWOW64\xvizvopl\bwgjxiiq.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\decd65be2a38b9f4ebb3f2b71fc31660.exe
"C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xvizvopl\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bwgjxiiq.exe" C:\Windows\SysWOW64\xvizvopl\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xvizvopl binPath= "C:\Windows\SysWOW64\xvizvopl\bwgjxiiq.exe /d\"C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xvizvopl "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xvizvopl
C:\Windows\SysWOW64\xvizvopl\bwgjxiiq.exe
C:\Windows\SysWOW64\xvizvopl\bwgjxiiq.exe /d"C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.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 | 52.101.42.0:25 | 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 | 67.195.204.73:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| BE | 108.177.15.26:25 | 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 |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/2684-4-0x0000000000400000-0x000000000046E000-memory.dmp
memory/2684-3-0x0000000000220000-0x0000000000233000-memory.dmp
memory/2684-1-0x0000000000500000-0x0000000000600000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\bwgjxiiq.exe
| MD5 | 62b3b10d4b214b8022c65bf37e6e4939 |
| SHA1 | a8c98773cc6f0e073c20b0da87699bb19268c338 |
| SHA256 | e0da54ecc0a54942fa0eaa043390ed29fdd73f92bae3fad438dc89d6ab44ac4e |
| SHA512 | c82a92d2b342de0e6b08cb5478d26552c023919546ee026f64a0b76cc229dd46b1b1da3b9bcfe1c6b2864325cdada0cf9e1f9b25f1596999e5c02bafb02a3674 |
C:\Windows\SysWOW64\xvizvopl\bwgjxiiq.exe
| MD5 | 13ca74b4e4d22fcc6ccfa5f3d0ed9bc1 |
| SHA1 | f7326660a6446de947946eda712d1e93f58729de |
| SHA256 | e4f49608e3e23c2d8f93373a9899c97b519f436f16f52f6130c627aecd2bfafb |
| SHA512 | 3b5819508edbfa3c5803967ac939df3e484a589c3a9b09ba49b31d6b0d05df70732b4793fe29f4ec756f991062bfab8dc29c8c95c6185725c2c682ba1abb48ff |
memory/2684-8-0x0000000000400000-0x000000000046E000-memory.dmp
memory/2420-9-0x0000000000290000-0x0000000000390000-memory.dmp
memory/2420-10-0x0000000000400000-0x000000000046E000-memory.dmp
memory/2648-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2648-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2648-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2420-16-0x0000000000400000-0x000000000046E000-memory.dmp
memory/2648-18-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2648-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2648-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2648-21-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-26 09:12
Reported
2024-03-26 09:14
Platform
win10v2004-20240226-en
Max time kernel
150s
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\koyfhwpx\ImagePath = "C:\\Windows\\SysWOW64\\koyfhwpx\\pygexzcc.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\koyfhwpx\pygexzcc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 860 set thread context of 4756 | N/A | C:\Windows\SysWOW64\koyfhwpx\pygexzcc.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\decd65be2a38b9f4ebb3f2b71fc31660.exe
"C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\koyfhwpx\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pygexzcc.exe" C:\Windows\SysWOW64\koyfhwpx\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create koyfhwpx binPath= "C:\Windows\SysWOW64\koyfhwpx\pygexzcc.exe /d\"C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description koyfhwpx "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start koyfhwpx
C:\Windows\SysWOW64\koyfhwpx\pygexzcc.exe
C:\Windows\SysWOW64\koyfhwpx\pygexzcc.exe /d"C:\Users\Admin\AppData\Local\Temp\decd65be2a38b9f4ebb3f2b71fc31660.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 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.53.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.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 | 104.47.53.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 28.118.140.52.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 | 183.142.211.20.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 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 67.195.204.74:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 100.5.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.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 |
| BE | 108.177.15.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 232.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 74.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 94.100.180.31:25 | 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 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 201.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 26.35.223.20.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 |
| US | 8.8.8.8:53 | 200.197.79.204.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 | 0.225.79.178.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 181.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.65.42.20.in-addr.arpa | udp |
Files
memory/5304-1-0x00000000004B0000-0x00000000005B0000-memory.dmp
memory/5304-2-0x00000000021B0000-0x00000000021C3000-memory.dmp
memory/5304-4-0x0000000000400000-0x000000000046E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\pygexzcc.exe
| MD5 | 05ef9769c64b9e886e5278e450587dd4 |
| SHA1 | c8dd39cf2725f1f4e778f1a3f40bbc54c12a072f |
| SHA256 | aa04b3d9d58fd65c35da8d55a4ef05bf0fc33b1f349826fcae0c7c6b4ad0415a |
| SHA512 | f7888b592715c1293195ae5a60d4206055cc1c96731f39d7e27b6ecc2609f9fd8884f5c890c6609cdfedde4fa32d04e9cc7b8e2885a1af3f617b7c3d81666279 |
C:\Windows\SysWOW64\koyfhwpx\pygexzcc.exe
| MD5 | 25e14c510e0afae55ef152ba3845741d |
| SHA1 | 5d3d28b2aeb5c8b5f64de554e19da41b236bf012 |
| SHA256 | 855fb53fc0f0d4c2f24a116119cb346b11eda014d801024b298ea657d4115a4a |
| SHA512 | 93b59eec986ced5b509c696ac8230400939e9dc2937305ae5b3424e5dabd50dfac95522c2736712090c6ce3a8a11e53b9ee9c5be1e6bc0178bfa1e7d4d1cbd29 |
memory/860-8-0x00000000007A0000-0x00000000008A0000-memory.dmp
memory/860-9-0x0000000000D30000-0x0000000000D43000-memory.dmp
memory/860-10-0x0000000000400000-0x000000000046E000-memory.dmp
memory/4756-11-0x0000000000290000-0x00000000002A5000-memory.dmp
memory/4756-14-0x0000000000290000-0x00000000002A5000-memory.dmp
memory/5304-15-0x0000000000400000-0x000000000046E000-memory.dmp
memory/4756-16-0x0000000000290000-0x00000000002A5000-memory.dmp
memory/4756-17-0x0000000000290000-0x00000000002A5000-memory.dmp
memory/860-18-0x0000000000400000-0x000000000046E000-memory.dmp
memory/5304-23-0x00000000004B0000-0x00000000005B0000-memory.dmp
memory/4756-25-0x0000000000290000-0x00000000002A5000-memory.dmp