Analysis Overview
SHA256
1b57418efd1b2646fe205b6d0050c975bca507b29e043dbd562e122964102c29
Threat Level: Known bad
The file 1b57418efd1b2646fe205b6d0050c975bca507b29e043dbd562e122964102c29 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 08:46
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-21 08:46
Reported
2022-10-21 18:31
Platform
win7-20220812-en
Max time kernel
36s
Max time network
42s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 900 wrote to memory of 1488 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 900 wrote to memory of 1488 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 900 wrote to memory of 1488 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 900 wrote to memory of 1488 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 900 wrote to memory of 1488 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 900 wrote to memory of 1488 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 900 wrote to memory of 1488 | 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\1b57418efd1b2646fe205b6d0050c975bca507b29e043dbd562e122964102c29.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b57418efd1b2646fe205b6d0050c975bca507b29e043dbd562e122964102c29.dll,#1
Network
Files
memory/1488-54-0x0000000000000000-mapping.dmp
memory/1488-55-0x0000000076071000-0x0000000076073000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-21 08:46
Reported
2022-10-21 18:31
Platform
win10v2004-20220812-en
Max time kernel
151s
Max time network
153s
Command Line
Signatures
Yunsip
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1680 wrote to memory of 836 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1680 wrote to memory of 836 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1680 wrote to memory of 836 | 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\1b57418efd1b2646fe205b6d0050c975bca507b29e043dbd562e122964102c29.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b57418efd1b2646fe205b6d0050c975bca507b29e043dbd562e122964102c29.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 209.197.3.8:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.253.225.254:80 | tcp | |
| US | 8.253.225.254:80 | tcp | |
| US | 8.8.8.8:53 | 15.89.54.20.in-addr.arpa | udp |
| US | 209.197.3.8:80 | tcp | |
| N/A | 20.42.72.131:443 | tcp |
Files
memory/836-132-0x0000000000000000-mapping.dmp