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
Program crash
Unsigned PE
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
win7-20231215-en
Max time kernel
118s
Max time network
119s
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 1860 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1860 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1860 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1860 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1860 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1860 wrote to memory of 2768 | N/A | C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1860 wrote to memory of 2768 | 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 1860 -s 916
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/1860-0-0x0000000000400000-0x0000000000440000-memory.dmp
memory/1860-1-0x0000000000300000-0x0000000000340000-memory.dmp
memory/1860-2-0x0000000000300000-0x0000000000340000-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
91s
Max time network
122s
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 452 -p 3292 -ip 3292
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3292 -s 1380
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 19.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.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 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
Files
memory/3292-0-0x0000000000400000-0x0000000000440000-memory.dmp
memory/3292-2-0x0000000000400000-0x0000000000440000-memory.dmp