Analysis Overview
SHA256
e65e98c2c80f48b6a7c49b10e60ce0a02d1bc227dcccc407afd9b385cc99c252
Threat Level: Likely malicious
The file 35fc17285530e2e4cca50280b5f4b4b1 was found to be: Likely malicious.
Malicious Activity Summary
Drops file in Drivers directory
Sets DLL path for service in the registry
Loads dropped DLL
VMProtect packed file
Deletes itself
Drops file in System32 directory
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-31 12:20
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-31 12:20
Reported
2024-01-10 14:00
Platform
win10v2004-20231222-en
Max time kernel
149s
Max time network
124s
Command Line
Signatures
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\drivers\beep.sys | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\netdde\Parameters\ServiceDll = "C:\\Windows\\system32\\TfmitxD.dll" | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
VMProtect packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\TfmitxD.dll | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1760 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1760 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1760 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe
"C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\35FC17~1.EXE > nul
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k krnlsrvc
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 66701422.3322.org | udp |
| CN | 183.236.2.18:9090 | 66701422.3322.org | tcp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 21.177.190.20.in-addr.arpa | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| IE | 20.223.36.55:443 | tcp | |
| IE | 20.223.36.55:443 | tcp | |
| IE | 20.223.36.55:443 | tcp | |
| 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 | udp | |
| N/A | 20.12.23.50:443 | tcp | |
| N/A | 20.12.23.50:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 20.3.187.198:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 20.12.23.50:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| CN | 183.236.2.18:9090 | tcp | |
| N/A | 20.3.187.198:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 2.17.5.100:80 | tcp | |
| N/A | 2.17.5.100:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 40.68.123.157:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 20.54.110.119:443 | tcp | |
| N/A | 20.3.187.198:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.175:80 | tcp | |
| CN | 183.236.2.18:9090 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 88.221.134.32:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.175:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.175:80 | tcp | |
| N/A | 88.221.134.32:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 162.159.36.2:53 | udp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 20.103.156.88:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 13.95.31.18:443 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 40.68.123.157:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 13.85.23.86:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 88.221.135.217:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 52.111.227.13:443 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.195:80 | tcp | |
| CN | 183.236.2.18:9090 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| N/A | 96.17.178.195:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 88.221.135.217:80 | tcp | |
| IE | 20.223.36.55:443 | tcp | |
| N/A | 88.221.135.217:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| CN | 183.236.2.18:9090 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| GB | 96.17.178.173:80 | tcp | |
| N/A | 162.159.36.2:53 | udp | |
| N/A | 20.242.39.171:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 88.221.135.232:80 | tcp | |
| N/A | 88.221.135.232:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 88.221.135.232:80 | tcp | |
| N/A | 88.221.135.232:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.209:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.209:80 | tcp | |
| N/A | 88.221.135.232:80 | tcp | |
| N/A | 96.17.178.209:80 | tcp | |
| N/A | 96.17.178.209:80 | tcp | |
| N/A | 88.221.135.232:80 | tcp | |
| N/A | 96.17.178.209:80 | tcp | |
| N/A | 96.17.178.209:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.209:80 | tcp | |
| N/A | 88.221.135.232:80 | tcp | |
| N/A | 88.221.135.232:80 | tcp | |
| N/A | 96.17.178.209:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 20.189.173.15:443 | tcp | |
| N/A | 96.17.178.209:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.209:80 | tcp | |
| N/A | 20.242.39.171:443 | tcp |
Files
C:\Windows\SysWOW64\TfmitxD.dll
| MD5 | db603e204991123fbd757e4756555931 |
| SHA1 | 69c6299a1590d51bf28fa8f64d0119d8af246e19 |
| SHA256 | 33578f21466c058bb343b302e3d8f4d6683b2b961f71d89342117b4038c176b3 |
| SHA512 | 468813dbbf44334f934775ab3605424e30fad594939893107dd6d3eab77793ceb5b4d62c05ab7802e31374ded402cae7c6fd250e5f5ffc281ce698d619051691 |
\??\c:\windows\SysWOW64\tfmitxd.dll
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/2716-10-0x0000000010000000-0x0000000010019000-memory.dmp
memory/1760-6-0x0000000010000000-0x0000000010019000-memory.dmp
memory/2716-11-0x0000000010000000-0x0000000010019000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-31 12:20
Reported
2024-01-10 14:00
Platform
win7-20231129-en
Max time kernel
127s
Max time network
137s
Command Line
Signatures
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\drivers\beep.sys | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Sets DLL path for service in the registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\netdde\Parameters\ServiceDll = "C:\\Windows\\system32\\TambtsD.dll" | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
VMProtect packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\TambtsD.dll | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2860 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2860 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2860 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2860 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe
"C:\Users\Admin\AppData\Local\Temp\35fc17285530e2e4cca50280b5f4b4b1.exe"
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k krnlsrvc
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\35FC17~1.EXE > nul
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 66701422.3322.org | udp |
| CN | 183.236.2.18:9090 | 66701422.3322.org | tcp |
| CN | 183.236.2.18:9090 | 66701422.3322.org | tcp |
| US | 8.8.8.8:53 | 66701422.3322.org | udp |
| CN | 183.236.2.18:9090 | 66701422.3322.org | tcp |
| CN | 183.236.2.18:9090 | 66701422.3322.org | tcp |
| US | 8.8.8.8:53 | 66701422.3322.org | udp |
| CN | 183.236.2.18:9090 | 66701422.3322.org | tcp |
Files
memory/2980-9-0x0000000010000000-0x0000000010019000-memory.dmp
\Windows\SysWOW64\TambtsD.dll
| MD5 | db603e204991123fbd757e4756555931 |
| SHA1 | 69c6299a1590d51bf28fa8f64d0119d8af246e19 |
| SHA256 | 33578f21466c058bb343b302e3d8f4d6683b2b961f71d89342117b4038c176b3 |
| SHA512 | 468813dbbf44334f934775ab3605424e30fad594939893107dd6d3eab77793ceb5b4d62c05ab7802e31374ded402cae7c6fd250e5f5ffc281ce698d619051691 |
memory/2860-6-0x0000000010000000-0x0000000010019000-memory.dmp