Analysis Overview
SHA256
bf901de5b54a593b3d90a2bcfdf0a963ba52381f542bf33299bdfcc3b5b2afff
Threat Level: Known bad
The file Registry.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Quasar family
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-13 09:57
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
2024-12-13 09:57
Reported
2024-12-13 09:59
Platform
win7-20240903-en
Max time kernel
126s
Max time network
137s
Command Line
Signatures
Quasar RAT
Quasar family
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\Runtime Broker.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
| 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\Registry.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Registry.exe
"C:\Users\Admin\AppData\Local\Temp\Registry.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp |
Files
memory/2748-0-0x000007FEF6033000-0x000007FEF6034000-memory.dmp
memory/2748-1-0x00000000012A0000-0x00000000015C4000-memory.dmp
memory/2748-2-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
| MD5 | 6f154cc5f643cc4228adf17d1ff32d42 |
| SHA1 | 10efef62da024189beb4cd451d3429439729675b |
| SHA256 | bf901de5b54a593b3d90a2bcfdf0a963ba52381f542bf33299bdfcc3b5b2afff |
| SHA512 | 050fc8a9a852d87f22296be8fe4067d6fabefc2dec408da3684a0deb31983617e8ba42494d3dbe75207d0810dec7ae1238b17b23ed71668cc099a31e1f6539d1 |
memory/2956-8-0x0000000001200000-0x0000000001524000-memory.dmp
memory/2748-7-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
memory/2956-10-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
memory/2956-9-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
memory/2956-11-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-13 09:57
Reported
2024-12-13 09:59
Platform
win10v2004-20241007-en
Max time kernel
126s
Max time network
147s
Command Line
Signatures
Quasar RAT
Quasar family
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\Runtime Broker.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
| 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\Registry.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4964 wrote to memory of 4792 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4964 wrote to memory of 4792 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4964 wrote to memory of 4256 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe |
| PID 4964 wrote to memory of 4256 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe |
| PID 4256 wrote to memory of 864 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4256 wrote to memory of 864 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Registry.exe
"C:\Users\Admin\AppData\Local\Temp\Registry.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| US | 8.8.8.8:53 | 133.130.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.130.81.91.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp |
Files
memory/4964-0-0x00007FFA38393000-0x00007FFA38395000-memory.dmp
memory/4964-1-0x0000000000CF0000-0x0000000001014000-memory.dmp
memory/4964-2-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
| MD5 | 6f154cc5f643cc4228adf17d1ff32d42 |
| SHA1 | 10efef62da024189beb4cd451d3429439729675b |
| SHA256 | bf901de5b54a593b3d90a2bcfdf0a963ba52381f542bf33299bdfcc3b5b2afff |
| SHA512 | 050fc8a9a852d87f22296be8fe4067d6fabefc2dec408da3684a0deb31983617e8ba42494d3dbe75207d0810dec7ae1238b17b23ed71668cc099a31e1f6539d1 |
memory/4964-8-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp
memory/4256-9-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp
memory/4256-10-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp
memory/4256-11-0x000000001C560000-0x000000001C5B0000-memory.dmp
memory/4256-12-0x000000001C670000-0x000000001C722000-memory.dmp
memory/4256-13-0x00007FFA38390000-0x00007FFA38E51000-memory.dmp