Analysis Overview
SHA256
307ec13c5bbf0d83401c460b76b095400af68a527718306d0ba8b1cc3fccc3d0
Threat Level: Known bad
The file 307ec13c5bbf0d83401c460b76b095400af68a527718306d0ba8b1cc3fccc3d0 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 00:12
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-20 00:12
Reported
2022-10-20 05:53
Platform
win7-20220812-en
Max time kernel
26s
Max time network
47s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1628 wrote to memory of 1880 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1628 wrote to memory of 1880 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1628 wrote to memory of 1880 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1628 wrote to memory of 1880 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1628 wrote to memory of 1880 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1628 wrote to memory of 1880 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1628 wrote to memory of 1880 | 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\307ec13c5bbf0d83401c460b76b095400af68a527718306d0ba8b1cc3fccc3d0.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\307ec13c5bbf0d83401c460b76b095400af68a527718306d0ba8b1cc3fccc3d0.dll,#1
Network
Files
memory/1880-54-0x0000000000000000-mapping.dmp
memory/1880-55-0x0000000076201000-0x0000000076203000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-20 00:12
Reported
2022-10-20 05:53
Platform
win10v2004-20220812-en
Max time kernel
147s
Max time network
177s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4412 wrote to memory of 4824 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4412 wrote to memory of 4824 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4412 wrote to memory of 4824 | 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\307ec13c5bbf0d83401c460b76b095400af68a527718306d0ba8b1cc3fccc3d0.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\307ec13c5bbf0d83401c460b76b095400af68a527718306d0ba8b1cc3fccc3d0.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| US | 52.182.141.63:443 | tcp | |
| US | 8.8.8.8:53 | 106.89.54.20.in-addr.arpa | udp |
Files
memory/4824-132-0x0000000000000000-mapping.dmp