Analysis Overview
SHA256
e482863957a81bf585e637311d51be7a4cb8819d432ce5dab3b089ceb46005b5
Threat Level: Known bad
The file utweb_installer.exe was found to be: Known bad.
Malicious Activity Summary
Mars Stealer
Reads user/profile data of web browsers
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-19 22:55
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-19 22:55
Reported
2023-12-19 22:57
Platform
win7-20231129-en
Max time kernel
121s
Max time network
121s
Command Line
Signatures
Reads user/profile data of web browsers
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1680 wrote to memory of 2752 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe
"C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 920
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | moscow-post.ru | udp |
| RU | 185.71.67.60:80 | moscow-post.ru | tcp |
| US | 8.8.8.8:53 | www.moscow-post.ru | udp |
| RU | 185.71.67.60:80 | www.moscow-post.ru | tcp |
| US | 8.8.8.8:53 | www.moscow-post.su | udp |
| RU | 185.71.67.60:80 | www.moscow-post.su | tcp |
Files
memory/1680-0-0x0000000000400000-0x0000000000440000-memory.dmp
memory/1680-1-0x0000000000230000-0x0000000000270000-memory.dmp
memory/1680-2-0x0000000000230000-0x0000000000270000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-19 22:55
Reported
2023-12-19 22:57
Platform
win10v2004-20231215-en
Max time kernel
142s
Max time network
159s
Command Line
Signatures
Mars Stealer
Reads user/profile data of web browsers
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe
"C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1904 -ip 1904
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 1380
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 20.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | moscow-post.ru | udp |
| RU | 185.71.67.60:80 | moscow-post.ru | tcp |
| US | 8.8.8.8:53 | www.moscow-post.ru | udp |
| RU | 185.71.67.60:80 | www.moscow-post.ru | tcp |
| US | 8.8.8.8:53 | www.moscow-post.su | udp |
| RU | 185.71.67.60:80 | www.moscow-post.su | tcp |
| US | 8.8.8.8:53 | 60.67.71.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 204.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.143.182.52.in-addr.arpa | udp |
Files
memory/1904-0-0x0000000000400000-0x0000000000440000-memory.dmp
memory/1904-2-0x0000000000400000-0x0000000000440000-memory.dmp