Analysis Overview
SHA256
5bd7522d5fc9974eec5366697ee99480abb6910302d0250838022d6758024fa8
Threat Level: Known bad
The file 37887c9dce52b5f8926515cd07e14319.dll was found to be: Known bad.
Malicious Activity Summary
SystemBC
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2023-04-11 09:15
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-04-11 09:15
Reported
2023-04-11 09:17
Platform
win7-20230220-en
Max time kernel
30s
Max time network
33s
Command Line
Signatures
SystemBC
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1368 wrote to memory of 1580 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1368 wrote to memory of 1580 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1368 wrote to memory of 1580 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1368 wrote to memory of 1580 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1368 wrote to memory of 1580 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1368 wrote to memory of 1580 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1368 wrote to memory of 1580 | 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\37887c9dce52b5f8926515cd07e14319.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\37887c9dce52b5f8926515cd07e14319.dll,#1
Network
Files
memory/1580-54-0x0000000010000000-0x0000000010179000-memory.dmp
memory/1580-55-0x0000000010000000-0x0000000010179000-memory.dmp
memory/1580-56-0x00000000008C0000-0x00000000009D3000-memory.dmp
memory/1580-57-0x00000000001B0000-0x00000000001B4000-memory.dmp
memory/1580-58-0x00000000001F0000-0x00000000001F1000-memory.dmp
memory/1580-60-0x0000000000230000-0x0000000000231000-memory.dmp
memory/1580-59-0x0000000000240000-0x0000000000241000-memory.dmp
memory/1580-61-0x00000000001D0000-0x00000000001D5000-memory.dmp
memory/1580-62-0x0000000000210000-0x0000000000212000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-04-11 09:15
Reported
2023-04-11 09:17
Platform
win10v2004-20230220-en
Max time kernel
119s
Max time network
126s
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 1872 wrote to memory of 2704 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1872 wrote to memory of 2704 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1872 wrote to memory of 2704 | 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\37887c9dce52b5f8926515cd07e14319.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\37887c9dce52b5f8926515cd07e14319.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2704 -ip 2704
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 572
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 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.33.24.67.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.38.195.152.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| IE | 20.54.89.15:443 | tcp | |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.36.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.13.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.81.21.72.in-addr.arpa | udp |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 131.253.33.203:80 | tcp | |
| US | 93.184.221.240:80 | tcp |
Files
memory/2704-133-0x0000000010000000-0x0000000010179000-memory.dmp
memory/2704-134-0x0000000001650000-0x0000000001763000-memory.dmp
memory/2704-135-0x0000000001500000-0x0000000001504000-memory.dmp