Analysis Overview
SHA256
30369ff4ed77a2cf2fd35a32c876a222cca094e7db7344051dc881e982908e95
Threat Level: Known bad
The file Client-built.exe was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar family
Quasar payload
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-18 14:01
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
2024-04-18 14:01
Reported
2024-04-18 14:04
Platform
win10v2004-20240412-en
Max time kernel
147s
Max time network
154s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4436 wrote to memory of 4352 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 4436 wrote to memory of 4352 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| N/A | 192.168.254.152:4782 | tcp | |
| N/A | 192.168.254.152:4782 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 65.139.73.23.in-addr.arpa | udp |
| N/A | 192.168.254.152:4782 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| N/A | 192.168.254.152:4782 | tcp | |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| N/A | 192.168.254.152:4782 | tcp | |
| N/A | 192.168.254.152:4782 | tcp | |
| US | 8.8.8.8:53 | 93.65.42.20.in-addr.arpa | udp |
Files
memory/4436-0-0x0000000000700000-0x0000000000A24000-memory.dmp
memory/4436-1-0x00007FFF3D1B0000-0x00007FFF3DC71000-memory.dmp
memory/4436-2-0x000000001B780000-0x000000001B790000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | af13ce84d2a5ee2ab7854af2d6571ab1 |
| SHA1 | bf082b48f3bd45f8e6c55a7e897f5171181fad61 |
| SHA256 | 30369ff4ed77a2cf2fd35a32c876a222cca094e7db7344051dc881e982908e95 |
| SHA512 | e501e34e108a99a8a82560b20baccdd3746f5713a0fbaa37a209ff1daacf6637022c5bfd35ff25efdc9adbf7ddf72e7882cf300d076f1ab0886174437e801d56 |
memory/4352-10-0x000000001B990000-0x000000001B9A0000-memory.dmp
memory/4436-9-0x00007FFF3D1B0000-0x00007FFF3DC71000-memory.dmp
memory/4352-8-0x00007FFF3D1B0000-0x00007FFF3DC71000-memory.dmp
memory/4352-11-0x000000001C3D0000-0x000000001C420000-memory.dmp
memory/4352-12-0x000000001C4E0000-0x000000001C592000-memory.dmp
memory/4352-13-0x00007FFF3D1B0000-0x00007FFF3DC71000-memory.dmp
memory/4352-14-0x000000001B990000-0x000000001B9A0000-memory.dmp