Analysis Overview
SHA256
bda01786710335faa427d41d07673b2f5ef86e5c0a159b12f86d7e3a4d0877b4
Threat Level: Known bad
The file 2024-05-23_cb671559b98452c413726596e21f7419_stop was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu family
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-05-23 09:26
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Djvu family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-23 09:26
Reported
2024-05-23 09:28
Platform
win7-20231129-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1688 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1688 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1688 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1688 wrote to memory of 2036 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 192
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-23 09:26
Reported
2024-05-23 09:28
Platform
win10v2004-20240508-en
Max time kernel
148s
Max time network
149s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_cb671559b98452c413726596e21f7419_stop.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4520 -ip 4520
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4520 -s 568
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 16.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.14.97.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.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 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 131.72.42.20.in-addr.arpa | udp |