Analysis Overview
SHA256
c4edf15d1762c66cdd4fc361fc423ce59fe23b5bea8609f611bd0c0518f5f39c
Threat Level: Known bad
The file a1221c43754f0bf8adfe72560dabb5e2.exe was found to be: Known bad.
Malicious Activity Summary
Tofsee
Sets service image path in registry
Modifies Windows Firewall
Creates new service(s)
Executes dropped EXE
Deletes itself
Checks computer location settings
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
2024-01-07 19:20
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-07 19:20
Reported
2024-01-07 19:25
Platform
win7-20231215-en
Max time kernel
202s
Max time network
230s
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\cvczdxzt\ImagePath = "C:\\Windows\\SysWOW64\\cvczdxzt\\agrcujdp.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\cvczdxzt\agrcujdp.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 576 set thread context of 2344 | N/A | C:\Windows\SysWOW64\cvczdxzt\agrcujdp.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\a1221c43754f0bf8adfe72560dabb5e2.exe
"C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cvczdxzt\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\agrcujdp.exe" C:\Windows\SysWOW64\cvczdxzt\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cvczdxzt binPath= "C:\Windows\SysWOW64\cvczdxzt\agrcujdp.exe /d\"C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cvczdxzt "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cvczdxzt
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\cvczdxzt\agrcujdp.exe
C:\Windows\SysWOW64\cvczdxzt\agrcujdp.exe /d"C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.exe"
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 | mta6.am0.yahoodns.net | udp |
| US | 67.195.228.111:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| US | 108.177.127.27:25 | smtp.google.com | tcp |
| HK | 43.231.4.6:443 | tcp |
Files
memory/2544-1-0x0000000000C90000-0x0000000000D90000-memory.dmp
memory/2544-2-0x00000000002C0000-0x00000000002D3000-memory.dmp
memory/2544-3-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/2544-4-0x0000000000400000-0x0000000000C17000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\agrcujdp.exe
| MD5 | 942896d9800fa71b399e4893a1211fe4 |
| SHA1 | bc4054f5b9f39e734d12c6aaf3bfa66925cd45d9 |
| SHA256 | 1583698b26fe9e3bd95b0c367d580630aa645cb118dc7c774933c731e4c8d648 |
| SHA512 | 239e12cb278881f2936e6b010bbdaa82114f33f8d0a8a109045c9d97d1478a5fe6eb2a24f07d3c800d1dd7541666386cb1ccd9a94c1c9a9a242dc9b379338f77 |
memory/2544-7-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/2544-9-0x00000000002C0000-0x00000000002D3000-memory.dmp
memory/2544-8-0x0000000000400000-0x0000000000C17000-memory.dmp
C:\Windows\SysWOW64\cvczdxzt\agrcujdp.exe
| MD5 | 9d460bd0337e45c16e8bcabce4bf9d52 |
| SHA1 | 68fa7fe0e084c4106838d566c5259101b0c0fa6b |
| SHA256 | 403c04935731b773463663ac2e4dda52cb3d4d73cf6d43f086885482dceaaee7 |
| SHA512 | e10289b3ba577e09debe5ae74925dc89f0093c8c68befe8f3062715218a06511d2c1c188cf573a1c72222deee9e5d2e02e65c9dae63a020a03c4e70454206721 |
memory/576-12-0x0000000000DF0000-0x0000000000EF0000-memory.dmp
memory/576-13-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/2344-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2344-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2344-17-0x0000000000080000-0x0000000000095000-memory.dmp
memory/576-18-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/2344-21-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2344-22-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2344-23-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2344-24-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-07 19:20
Reported
2024-01-07 19:23
Platform
win10v2004-20231215-en
Max time kernel
158s
Max time network
172s
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\zizhabjm\ImagePath = "C:\\Windows\\SysWOW64\\zizhabjm\\jnuesfnd.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.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\zizhabjm\jnuesfnd.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3236 set thread context of 4144 | N/A | C:\Windows\SysWOW64\zizhabjm\jnuesfnd.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\a1221c43754f0bf8adfe72560dabb5e2.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\zizhabjm\jnuesfnd.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.exe
"C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zizhabjm\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jnuesfnd.exe" C:\Windows\SysWOW64\zizhabjm\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zizhabjm binPath= "C:\Windows\SysWOW64\zizhabjm\jnuesfnd.exe /d\"C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zizhabjm "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zizhabjm
C:\Windows\SysWOW64\zizhabjm\jnuesfnd.exe
C:\Windows\SysWOW64\zizhabjm\jnuesfnd.exe /d"C:\Users\Admin\AppData\Local\Temp\a1221c43754f0bf8adfe72560dabb5e2.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 456 -p 3796 -ip 3796
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 1156
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3236 -ip 3236
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3236 -s 512
Network
| Country | Destination | Domain | Proto |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 23.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 20.112.250.133:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| HK | 43.231.4.6:443 | tcp | |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 104.47.53.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.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 | 67.195.204.79:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.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 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| US | 108.177.127.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | 83.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.179.17.96.in-addr.arpa | udp |
| HK | 43.231.4.6:443 | tcp | |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | 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 |
| HK | 43.231.4.6:443 | tcp | |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 105.193.132.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 62.179.17.96.in-addr.arpa | udp |
Files
memory/3796-1-0x0000000000CA0000-0x0000000000DA0000-memory.dmp
memory/3796-2-0x0000000002820000-0x0000000002833000-memory.dmp
memory/3796-4-0x0000000000400000-0x0000000000C17000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\jnuesfnd.exe
| MD5 | fecc4e9436d9c5b3b4a0d93ed1253a8c |
| SHA1 | b55e7bb44cec08479f89b359d5a9c337cadb3427 |
| SHA256 | fb948ef5f98b1bc2d918c304b5239112d05463469b837a9939d8ede3cc782f4f |
| SHA512 | 8d278e1d527565deabc94bc7f9be6a7b36cd3a7f1eacb3302d95a7eff7f659f3f8084fc82194d32c898bb573c0dd2d10b4bcaa2c9a8cdec9f4edebc9098d0ce8 |
C:\Windows\SysWOW64\zizhabjm\jnuesfnd.exe
| MD5 | 2785c4e847e54a0c04442c60d65e110e |
| SHA1 | fc92411daa3417697e3eeb5bad517376946ca114 |
| SHA256 | 999eb3c207ababc5d71cf7c726adf7ecd6ffeff98f98a9687c42684120848692 |
| SHA512 | 1d4d7826f0d3f3bdc6b9077385a81d56c45a4e6c080fc09aa49e64495819d7dd0ced1050fbd6a0badef319943782b1c892984f5dfe71068c0695102972d39d14 |
memory/3796-7-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/3796-8-0x0000000002820000-0x0000000002833000-memory.dmp
memory/4144-15-0x0000000001000000-0x0000000001015000-memory.dmp
memory/4144-18-0x0000000001000000-0x0000000001015000-memory.dmp
memory/3236-17-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/4144-16-0x0000000001000000-0x0000000001015000-memory.dmp
memory/3236-13-0x0000000000400000-0x0000000000C17000-memory.dmp
memory/4144-11-0x0000000001000000-0x0000000001015000-memory.dmp
memory/3236-10-0x0000000000EE0000-0x0000000000FE0000-memory.dmp
memory/4144-19-0x0000000001000000-0x0000000001015000-memory.dmp