Analysis Overview
SHA256
76257feb8d753a419e11bd0672eac3d236ac990d8ba8baf7ec44c5f1f3eac591
Threat Level: Known bad
The file testating.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar RAT
Quasar payload
Executes dropped EXE
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-15 17:53
Signatures
Quasar family
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-15 17:53
Reported
2023-01-15 17:55
Platform
win7-20221111-en
Max time kernel
31s
Max time network
34s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1992 wrote to memory of 1260 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Windows\system32\schtasks.exe |
| PID 1992 wrote to memory of 1260 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Windows\system32\schtasks.exe |
| PID 1992 wrote to memory of 1260 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Windows\system32\schtasks.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\testating.exe
"C:\Users\Admin\AppData\Local\Temp\testating.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\testating.exe" /rl HIGHEST /f
Network
Files
memory/1992-54-0x0000000000D00000-0x0000000000D84000-memory.dmp
memory/1992-55-0x000007FEFBDF1000-0x000007FEFBDF3000-memory.dmp
memory/1260-56-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-01-15 17:53
Reported
2023-01-15 17:55
Platform
win10v2004-20221111-en
Max time kernel
133s
Max time network
151s
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 |
| 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 |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | N/A |
| Token: SeDebugPrivilege | 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 4488 wrote to memory of 664 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4488 wrote to memory of 664 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4488 wrote to memory of 3788 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 4488 wrote to memory of 3788 | N/A | C:\Users\Admin\AppData\Local\Temp\testating.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3788 wrote to memory of 3880 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3788 wrote to memory of 3880 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\testating.exe
"C:\Users\Admin\AppData\Local\Temp\testating.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\testating.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.1.237:1290 | tcp | |
| N/A | 192.168.1.237:1290 | tcp | |
| N/A | 13.89.179.9:443 | tcp | |
| N/A | 96.16.53.148:80 | tcp | |
| N/A | 96.16.53.148:80 | tcp | |
| N/A | 96.16.53.148:80 | tcp | |
| N/A | 104.80.225.205:443 | tcp | |
| N/A | 192.168.1.237:1290 | tcp | |
| N/A | 192.168.1.237:1290 | tcp | |
| N/A | 192.168.1.237:1290 | tcp | |
| N/A | 192.168.1.237:1290 | tcp |
Files
memory/4488-132-0x0000000000500000-0x0000000000584000-memory.dmp
memory/4488-133-0x00007FFA23010000-0x00007FFA23AD1000-memory.dmp
memory/664-134-0x0000000000000000-mapping.dmp
memory/3788-135-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 1f8f68e7623630103601f6235e9c94a6 |
| SHA1 | 3c32c376b1be12d1f9df117eb8435804548c02c8 |
| SHA256 | 76257feb8d753a419e11bd0672eac3d236ac990d8ba8baf7ec44c5f1f3eac591 |
| SHA512 | c93ba03f50602919a8355334c1450fb9f57aeb432027e53c458195d7dfbdc3940d042e136eb3ace24cd76c1ffbd359be05582893fc0e53f5fe764c8c32fe6631 |
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 1f8f68e7623630103601f6235e9c94a6 |
| SHA1 | 3c32c376b1be12d1f9df117eb8435804548c02c8 |
| SHA256 | 76257feb8d753a419e11bd0672eac3d236ac990d8ba8baf7ec44c5f1f3eac591 |
| SHA512 | c93ba03f50602919a8355334c1450fb9f57aeb432027e53c458195d7dfbdc3940d042e136eb3ace24cd76c1ffbd359be05582893fc0e53f5fe764c8c32fe6631 |
memory/4488-138-0x00007FFA23010000-0x00007FFA23AD1000-memory.dmp
memory/3788-139-0x00007FFA23010000-0x00007FFA23AD1000-memory.dmp
memory/3880-140-0x0000000000000000-mapping.dmp
memory/3788-141-0x000000001B2A0000-0x000000001B2F0000-memory.dmp
memory/3788-142-0x000000001C8B0000-0x000000001C962000-memory.dmp
memory/3788-143-0x00007FFA23010000-0x00007FFA23AD1000-memory.dmp