Analysis Overview
SHA256
bf901de5b54a593b3d90a2bcfdf0a963ba52381f542bf33299bdfcc3b5b2afff
Threat Level: Known bad
The file Registry.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar RAT
Quasar payload
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-13 10:02
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 10:02
Reported
2024-12-13 10:04
Platform
win7-20240903-en
Max time kernel
149s
Max time network
150s
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 | |
| VN | 14.243.221.170:2654 | tcp |
Files
memory/1972-0-0x000007FEF58D3000-0x000007FEF58D4000-memory.dmp
memory/1972-1-0x0000000000E20000-0x0000000001144000-memory.dmp
memory/1972-2-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
| MD5 | 6f154cc5f643cc4228adf17d1ff32d42 |
| SHA1 | 10efef62da024189beb4cd451d3429439729675b |
| SHA256 | bf901de5b54a593b3d90a2bcfdf0a963ba52381f542bf33299bdfcc3b5b2afff |
| SHA512 | 050fc8a9a852d87f22296be8fe4067d6fabefc2dec408da3684a0deb31983617e8ba42494d3dbe75207d0810dec7ae1238b17b23ed71668cc099a31e1f6539d1 |
memory/2548-9-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp
memory/2548-8-0x0000000000370000-0x0000000000694000-memory.dmp
memory/1972-7-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp
memory/2548-10-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp
memory/2548-11-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-13 10:02
Reported
2024-12-13 10:04
Platform
win10v2004-20241007-en
Max time kernel
125s
Max time network
153s
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 3184 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3184 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3184 wrote to memory of 1040 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe |
| PID 3184 wrote to memory of 1040 | N/A | C:\Users\Admin\AppData\Local\Temp\Registry.exe | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe |
| PID 1040 wrote to memory of 2632 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1040 wrote to memory of 2632 | 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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.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 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.53.16.96.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| VN | 14.243.221.170:2654 | tcp | |
| VN | 14.243.221.170:2654 | tcp |
Files
memory/3184-0-0x00007FF8A8573000-0x00007FF8A8575000-memory.dmp
memory/3184-1-0x0000000000720000-0x0000000000A44000-memory.dmp
memory/3184-2-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
| MD5 | 6f154cc5f643cc4228adf17d1ff32d42 |
| SHA1 | 10efef62da024189beb4cd451d3429439729675b |
| SHA256 | bf901de5b54a593b3d90a2bcfdf0a963ba52381f542bf33299bdfcc3b5b2afff |
| SHA512 | 050fc8a9a852d87f22296be8fe4067d6fabefc2dec408da3684a0deb31983617e8ba42494d3dbe75207d0810dec7ae1238b17b23ed71668cc099a31e1f6539d1 |
memory/3184-9-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp
memory/1040-8-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp
memory/1040-10-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp
memory/1040-11-0x000000001C680000-0x000000001C6D0000-memory.dmp
memory/1040-12-0x000000001C790000-0x000000001C842000-memory.dmp
memory/1040-13-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp