Analysis Overview
SHA256
5dfaa531791a4f57f6da1041b2f53327cbf7e51c9c544642a7ae3fe2f892103d
Threat Level: Known bad
The file c4c3744a19057ddad87647f25ea466f1 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)
Executes dropped EXE
Checks computer location settings
Deletes itself
Suspicious use of SetThreadContext
Launches sc.exe
Program crash
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-13 02:38
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-13 02:38
Reported
2024-03-13 02:40
Platform
win7-20240221-en
Max time kernel
140s
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\vakhjjw = "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\vakhjjw\ImagePath = "C:\\Windows\\SysWOW64\\vakhjjw\\zagpawks.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\vakhjjw\zagpawks.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2396 set thread context of 2428 | N/A | C:\Windows\SysWOW64\vakhjjw\zagpawks.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\c4c3744a19057ddad87647f25ea466f1.exe
"C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vakhjjw\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zagpawks.exe" C:\Windows\SysWOW64\vakhjjw\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vakhjjw binPath= "C:\Windows\SysWOW64\vakhjjw\zagpawks.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vakhjjw "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vakhjjw
C:\Windows\SysWOW64\vakhjjw\zagpawks.exe
C:\Windows\SysWOW64\vakhjjw\zagpawks.exe /d"C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.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 |
| HK | 43.231.4.6:443 | tcp | |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 67.195.228.106:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 209.85.202.26:25 | 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 | 94.100.180.31:25 | mxs.mail.ru | tcp |
| HK | 43.231.4.6:443 | tcp |
Files
memory/1936-2-0x0000000000220000-0x0000000000233000-memory.dmp
memory/1936-1-0x0000000000A20000-0x0000000000B20000-memory.dmp
memory/1936-4-0x0000000000400000-0x00000000008EB000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\zagpawks.exe
| MD5 | 2d6da61dd89b8ca1670b680d5b0bb57d |
| SHA1 | 57e8ffe8c173b4f97f7c32f382a86e615da5c1df |
| SHA256 | 1e37bf4e0081f29daa7c8c4aa2526f5d5920fff52eca0e42ea6354540e1f0779 |
| SHA512 | 39dbed5cf6bfb1d5dd77bbcf0fe74adacfe050c63c5d64caef2e1d844f0d8b9fca2cc67352004a313d9a36ca7e58848e488471b6c55ad88e70df36a9a4f7e1b2 |
C:\Windows\SysWOW64\vakhjjw\zagpawks.exe
| MD5 | 65fc6b6f6988c1a9da2dd0daa5cb0518 |
| SHA1 | 3ecffe66b24f97417783f4ad98357b5248706c1d |
| SHA256 | 503697155747cc69ca4a28b5bb951b36eab3684e5c2c909b70658cb8efb5fd69 |
| SHA512 | 1f543932012e1adcf39a4fb3d7ad5c8eb75f4cc6fc96f4015d6964292bcb1eb0c357df93b0e008a4c67bea8671df5c59690e26e816d0b49e9aa3de42d3536e9b |
memory/1936-7-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/2396-9-0x0000000000290000-0x0000000000390000-memory.dmp
memory/2396-10-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/2428-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2428-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2428-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2396-15-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/2428-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2428-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2428-21-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-13 02:38
Reported
2024-03-13 02:41
Platform
win10v2004-20240226-en
Max time kernel
158s
Max time network
165s
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\zcknioft\ImagePath = "C:\\Windows\\SysWOW64\\zcknioft\\fpkfwwpv.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.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\zcknioft\fpkfwwpv.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 772 set thread context of 2760 | N/A | C:\Windows\SysWOW64\zcknioft\fpkfwwpv.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\c4c3744a19057ddad87647f25ea466f1.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\zcknioft\fpkfwwpv.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.exe
"C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3108 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zcknioft\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fpkfwwpv.exe" C:\Windows\SysWOW64\zcknioft\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zcknioft binPath= "C:\Windows\SysWOW64\zcknioft\fpkfwwpv.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zcknioft "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zcknioft
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\zcknioft\fpkfwwpv.exe
C:\Windows\SysWOW64\zcknioft\fpkfwwpv.exe /d"C:\Users\Admin\AppData\Local\Temp\c4c3744a19057ddad87647f25ea466f1.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5088 -ip 5088
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 1036
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 772 -ip 772
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 772 -s 512
Network
| Country | Destination | Domain | Proto |
| GB | 142.250.200.42:443 | tcp | |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.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 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 13.107.246.64:443 | tcp | |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.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 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| HK | 43.231.4.6:443 | tcp | |
| US | 104.47.53.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.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 | 67.195.228.106:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 209.85.202.26:25 | 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 | 94.100.180.31:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | 210.80.50.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.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 |
Files
memory/5088-1-0x0000000000930000-0x0000000000A30000-memory.dmp
memory/5088-2-0x0000000002630000-0x0000000002643000-memory.dmp
memory/5088-3-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/5088-5-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/5088-7-0x0000000000930000-0x0000000000A30000-memory.dmp
memory/5088-8-0x0000000002630000-0x0000000002643000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\fpkfwwpv.exe
| MD5 | 92a77c87d0815605089d1011067f7521 |
| SHA1 | 1840a603a9bced2e9975c4a83286887ed201f0d2 |
| SHA256 | 9a2a232cfae84a3612fd9a7a581ea736294f9321deedc581324a4facd19bd153 |
| SHA512 | da9ea055a69270a83c3674f2eb5ad81dff7fb873958d988e414296025dbe54808a8bcd79d2c6330e893eaefb428741deaec3f1c599942b7627b9e806c35b2cc0 |
memory/5088-12-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/772-14-0x00000000009D0000-0x0000000000AD0000-memory.dmp
memory/772-15-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/2760-16-0x00000000008C0000-0x00000000008D5000-memory.dmp
memory/2760-20-0x00000000008C0000-0x00000000008D5000-memory.dmp
memory/772-21-0x0000000000400000-0x00000000008EB000-memory.dmp
memory/2760-22-0x00000000008C0000-0x00000000008D5000-memory.dmp
memory/2760-31-0x00000000008C0000-0x00000000008D5000-memory.dmp