Analysis Overview
SHA256
02c198348bbf5ce3b7ee384c5c482a991689e219e21456048b3bc5c64a6a58b6
Threat Level: Likely malicious
The file 4fccfed3868ef42c54f33dd7c002bb2c was found to be: Likely malicious.
Malicious Activity Summary
Drops file in Drivers directory
Deletes itself
Loads dropped DLL
VMProtect packed file
Drops file in System32 directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: LoadsDriver
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-01-10 06:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-10 06:13
Reported
2024-01-10 07:01
Platform
win7-20231215-en
Max time kernel
119s
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\4fccfed3868ef42c54f33dd7c002bb2c.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\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
VMProtect packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\RumxtwC.dll | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.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: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2476 wrote to memory of 2368 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2476 wrote to memory of 2368 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2476 wrote to memory of 2368 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2476 wrote to memory of 2368 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe
"C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\4FCCFE~1.EXE > nul
Network
Files
\Windows\SysWOW64\RumxtwC.dll
| MD5 | b916665ad5f7f82d48870e348cc8b30a |
| SHA1 | 0d598819f7e51ba6ad54d6ce3e026aab3a95f5a5 |
| SHA256 | 906fc301c36ab78ad7682990ab1e05335c64405d2c143ef4eec557a2a85ce045 |
| SHA512 | 89b817bec1e0a3aee1618698d484c29f0973b35f8bac334c67090098c18985b3d2f7a071c1c6cabcf169036df9b5ca6ecd8277c58d574685fb3431cc27572326 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-10 06:13
Reported
2024-01-10 07:01
Platform
win10v2004-20231215-en
Max time kernel
144s
Max time network
153s
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\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\RzmgtvC.dll | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.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: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2652 wrote to memory of 3284 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2652 wrote to memory of 3284 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2652 wrote to memory of 3284 | N/A | C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe
"C:\Users\Admin\AppData\Local\Temp\4fccfed3868ef42c54f33dd7c002bb2c.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\4FCCFE~1.EXE > nul
Network
| Country | Destination | Domain | Proto |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 84.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.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 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 16.173.189.20.in-addr.arpa | udp |
Files
C:\Windows\SysWOW64\RzmgtvC.dll
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Windows\SysWOW64\RzmgtvC.dll
| MD5 | b916665ad5f7f82d48870e348cc8b30a |
| SHA1 | 0d598819f7e51ba6ad54d6ce3e026aab3a95f5a5 |
| SHA256 | 906fc301c36ab78ad7682990ab1e05335c64405d2c143ef4eec557a2a85ce045 |
| SHA512 | 89b817bec1e0a3aee1618698d484c29f0973b35f8bac334c67090098c18985b3d2f7a071c1c6cabcf169036df9b5ca6ecd8277c58d574685fb3431cc27572326 |