Analysis Overview
SHA256
898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d
Threat Level: Known bad
The file 898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d 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 19:33
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-21 19:33
Reported
2022-10-22 23:07
Platform
win10v2004-20220901-en
Max time kernel
91s
Max time network
155s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3420 wrote to memory of 5024 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3420 wrote to memory of 5024 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3420 wrote to memory of 5024 | 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\898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| NL | 104.80.225.205:443 | tcp | |
| US | 72.21.91.29:80 | tcp | |
| GB | 51.132.193.104:443 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp |
Files
memory/5024-135-0x0000000000000000-mapping.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-21 19:33
Reported
2022-10-22 23:07
Platform
win7-20220901-en
Max time kernel
43s
Max time network
48s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1184 wrote to memory of 2044 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 2044 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 2044 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 2044 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 2044 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 2044 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 2044 | 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\898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll,#1
Network
Files
memory/2044-54-0x0000000000000000-mapping.dmp
memory/2044-55-0x0000000075A11000-0x0000000075A13000-memory.dmp