Analysis Overview
SHA256
d74c35a72f27144306192ee3ddbfaad92edc42658d5a240c61bd01e2abe283d4
Threat Level: Known bad
The file 91c7cded43648845e8acd59f3fafb6ce4fd5af517eb81a8e12e8c6640c07ff0f.zip was found to be: Known bad.
Malicious Activity Summary
SystemBC
Blocklisted process makes network request
Program crash
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-12-10 00:31
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-10 00:31
Reported
2023-12-10 00:34
Platform
win7-20231201-en
Max time kernel
140s
Max time network
132s
Command Line
Signatures
SystemBC
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2148 wrote to memory of 2904 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2148 wrote to memory of 2904 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2148 wrote to memory of 2904 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2148 wrote to memory of 2904 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2148 wrote to memory of 2904 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2148 wrote to memory of 2904 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2148 wrote to memory of 2904 | 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\91c7cded43648845e8acd59f3fafb6ce4fd5af517eb81a8e12e8c6640c07ff0f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\91c7cded43648845e8acd59f3fafb6ce4fd5af517eb81a8e12e8c6640c07ff0f.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 64.176.214.51:443 | tcp |
Files
memory/2904-0-0x0000000000700000-0x000000000077F000-memory.dmp
memory/2904-1-0x0000000000170000-0x0000000000176000-memory.dmp
memory/2904-2-0x0000000000190000-0x0000000000197000-memory.dmp
memory/2904-3-0x0000000000700000-0x000000000077F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-10 00:31
Reported
2023-12-10 00:34
Platform
win10v2004-20231127-en
Max time kernel
125s
Max time network
131s
Command Line
Signatures
SystemBC
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3716 wrote to memory of 2176 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3716 wrote to memory of 2176 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3716 wrote to memory of 2176 | 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\91c7cded43648845e8acd59f3fafb6ce4fd5af517eb81a8e12e8c6640c07ff0f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\91c7cded43648845e8acd59f3fafb6ce4fd5af517eb81a8e12e8c6640c07ff0f.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2176 -ip 2176
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2176 -s 632
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.254.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.1.85.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.99.217.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.143.182.52.in-addr.arpa | udp |
Files
memory/2176-0-0x0000000001530000-0x0000000001536000-memory.dmp
memory/2176-1-0x0000000001550000-0x0000000001557000-memory.dmp
memory/2176-2-0x0000000000400000-0x000000000047F000-memory.dmp
memory/2176-3-0x0000000001530000-0x0000000001536000-memory.dmp