Analysis Overview
SHA256
c6fba941aee3b86f2582c1c0b8f8c53ee182a9fb95373251e134799121775f7f
Threat Level: Known bad
The file c6fba941aee3b86f2582c1c0b8f8c53ee182a9fb95373251e134799121775f7f was found to be: Known bad.
Malicious Activity Summary
Yunsip
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2022-10-20 21:20
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-20 21:20
Reported
2022-10-21 00:56
Platform
win7-20220901-en
Max time kernel
47s
Max time network
52s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 860 wrote to memory of 1252 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 860 wrote to memory of 1252 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 860 wrote to memory of 1252 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 860 wrote to memory of 1252 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 860 wrote to memory of 1252 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 860 wrote to memory of 1252 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 860 wrote to memory of 1252 | 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\c6fba941aee3b86f2582c1c0b8f8c53ee182a9fb95373251e134799121775f7f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6fba941aee3b86f2582c1c0b8f8c53ee182a9fb95373251e134799121775f7f.dll,#1
Network
Files
memory/1252-54-0x0000000000000000-mapping.dmp
memory/1252-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-20 21:20
Reported
2022-10-21 00:56
Platform
win10v2004-20220901-en
Max time kernel
112s
Max time network
140s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1836 wrote to memory of 1496 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1836 wrote to memory of 1496 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1836 wrote to memory of 1496 | 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\c6fba941aee3b86f2582c1c0b8f8c53ee182a9fb95373251e134799121775f7f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6fba941aee3b86f2582c1c0b8f8c53ee182a9fb95373251e134799121775f7f.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| NL | 142.251.39.100:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| NL | 142.251.39.100:80 | tcp | |
| US | 209.202.254.10:443 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 52.109.8.86:443 | tcp | |
| US | 20.189.173.5:443 | tcp | |
| NL | 104.80.225.205:443 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | 14.110.152.52.in-addr.arpa | udp |
| IE | 212.82.100.137:80 | tcp | |
| US | 13.107.42.16:443 | tcp |
Files
memory/1496-132-0x0000000000000000-mapping.dmp