Analysis Overview
SHA256
43315abb9c8be9a39782bd8694a7ea9f16a867500dc804454d04b8bf2c15c51e
Threat Level: Known bad
The file Quasar.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-03-15 04:57
Signatures
Quasar family
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-15 04:57
Reported
2024-03-15 05:25
Platform
win7-20240215-en
Max time kernel
360s
Max time network
361s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Quasar.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1200 wrote to memory of 2204 | N/A | C:\Users\Admin\AppData\Local\Temp\Quasar.exe | C:\Windows\system32\WerFault.exe |
| PID 1200 wrote to memory of 2204 | N/A | C:\Users\Admin\AppData\Local\Temp\Quasar.exe | C:\Windows\system32\WerFault.exe |
| PID 1200 wrote to memory of 2204 | N/A | C:\Users\Admin\AppData\Local\Temp\Quasar.exe | C:\Windows\system32\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Quasar.exe
"C:\Users\Admin\AppData\Local\Temp\Quasar.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1200 -s 584
Network
Files
memory/1200-0-0x0000000000BB0000-0x0000000000CE8000-memory.dmp
memory/1200-1-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp
memory/1200-2-0x000000001B560000-0x000000001B5E0000-memory.dmp
memory/1200-3-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp
memory/1200-4-0x000000001B560000-0x000000001B5E0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-15 04:57
Reported
2024-03-15 05:25
Platform
win10v2004-20231215-en
Max time kernel
449s
Max time network
451s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Quasar.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\Quasar.exe
"C:\Users\Admin\AppData\Local\Temp\Quasar.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 233.17.178.52.in-addr.arpa | udp |
Files
memory/1536-0-0x000001D918440000-0x000001D918578000-memory.dmp
memory/1536-2-0x000001D932AD0000-0x000001D932AE0000-memory.dmp
memory/1536-1-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp
memory/1536-3-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp