Analysis Overview
SHA256
54b25b1e53342c71fd40cf05d0cd2ace3d5ea7a1a060ca607943c3b6bc280088
Threat Level: Known bad
The file 54b25b1e53342c71fd40cf05d0cd2ace3d5ea7a1a060ca607943c3b6bc280088 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 00:45
Platform
win7-20220812-en
Max time kernel
42s
Max time network
46s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1184 wrote to memory of 964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1184 wrote to memory of 964 | 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\54b25b1e53342c71fd40cf05d0cd2ace3d5ea7a1a060ca607943c3b6bc280088.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\54b25b1e53342c71fd40cf05d0cd2ace3d5ea7a1a060ca607943c3b6bc280088.dll,#1
Network
Files
memory/964-54-0x0000000000000000-mapping.dmp
memory/964-55-0x0000000074BB1000-0x0000000074BB3000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-20 21:20
Reported
2022-10-21 00:44
Platform
win10v2004-20220901-en
Max time kernel
61s
Max time network
125s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4100 wrote to memory of 4288 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4100 wrote to memory of 4288 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4100 wrote to memory of 4288 | 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\54b25b1e53342c71fd40cf05d0cd2ace3d5ea7a1a060ca607943c3b6bc280088.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\54b25b1e53342c71fd40cf05d0cd2ace3d5ea7a1a060ca607943c3b6bc280088.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 20.189.173.15:443 | tcp | |
| FR | 2.18.109.224:443 | tcp |
Files
memory/4288-132-0x0000000000000000-mapping.dmp