Analysis Overview
SHA256
859ad779718a6f32b24f77fead92a93f447b72a0d2448680352e35803758038d
Threat Level: Known bad
The file systembc_unpacked was found to be: Known bad.
Malicious Activity Summary
Systembc family
Blocklisted process makes network request
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-05-03 21:51
Signatures
Systembc family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-05-03 21:51
Reported
2023-05-03 21:54
Platform
win7-20230220-en
Max time kernel
30s
Max time network
137s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 324 wrote to memory of 1920 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\systembc_unpacked.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\systembc_unpacked.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 45.77.115.67:443 | tcp |
Files
Analysis: behavioral2
Detonation Overview
Submitted
2023-05-03 21:51
Reported
2023-05-03 21:54
Platform
win10v2004-20230221-en
Max time kernel
135s
Max time network
153s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1812 wrote to memory of 3992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1812 wrote to memory of 3992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1812 wrote to memory of 3992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\systembc_unpacked.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\systembc_unpacked.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 93.184.220.29:80 | tcp | |
| US | 45.77.115.67:443 | tcp | |
| US | 8.8.8.8:53 | 67.115.77.45.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 52.242.101.226:443 | tcp | |
| US | 20.42.65.85:443 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| US | 8.8.8.8:53 | 86.8.109.52.in-addr.arpa | udp |
| US | 52.242.101.226:443 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| US | 52.242.101.226:443 | tcp |