Analysis Overview
SHA256
ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3
Threat Level: Known bad
The file ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3 was found to be: Known bad.
Malicious Activity Summary
Yunsip
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2022-10-21 19:32
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-21 19:32
Reported
2022-10-22 23:06
Platform
win7-20220812-en
Max time kernel
11s
Max time network
49s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1908 wrote to memory of 1492 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1908 wrote to memory of 1492 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1908 wrote to memory of 1492 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1908 wrote to memory of 1492 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1908 wrote to memory of 1492 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1908 wrote to memory of 1492 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1908 wrote to memory of 1492 | 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\ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll,#1
Network
Files
memory/1492-54-0x0000000000000000-mapping.dmp
memory/1492-55-0x0000000075B11000-0x0000000075B13000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-21 19:32
Reported
2022-10-22 23:03
Platform
win10v2004-20220812-en
Max time kernel
81s
Max time network
145s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2328 wrote to memory of 2732 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2328 wrote to memory of 2732 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2328 wrote to memory of 2732 | 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\ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 93.184.221.240:80 | tcp | |
| FR | 40.79.141.153:443 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.221.240:80 | tcp |
Files
memory/2732-132-0x0000000000000000-mapping.dmp