Analysis Overview
SHA256
53ee3b2954f11ef1198fdb8cecf1fdd16d07abde3a60a87285324d6e4b1146aa
Threat Level: Known bad
The file bingo.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Modifies Installed Components in the registry
Enumerates connected drives
Drops file in Windows directory
Unsigned PE
Creates scheduled task(s)
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Checks SCSI registry key(s)
Modifies Internet Explorer settings
Modifies registry class
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Uses Task Scheduler COM API
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-31 23:59
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
2023-12-31 23:58
Reported
2024-01-01 00:02
Platform
win10-20231215-en
Max time kernel
179s
Max time network
197s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000\Software\Microsoft\Active Setup\Installed Components | C:\Windows\explorer.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\D: | C:\Windows\explorer.exe | N/A |
| File opened (read-only) | \??\F: | C:\Windows\explorer.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\rescache\_merged\4032412167\2900507189.pri | C:\Windows\explorer.exe | N/A |
| File created | C:\Windows\rescache\_merged\2717123927\3950266016.pri | C:\Windows\explorer.exe | N/A |
| File created | C:\Windows\rescache\_merged\1601268389\3877292338.pri | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0003 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0002 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002 | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\ConfigFlags | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0003 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\HardwareID | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\HardwareID | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{a45c254e-df1c-4efd-8020-67d146a850e0}\0011 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0002 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{a45c254e-df1c-4efd-8020-67d146a850e0}\0011 | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\HardwareID | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\HardwareID | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\Capabilities | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Capabilities | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0002 | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064 | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\ConfigFlags | C:\Windows\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0002 | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Capabilities | C:\Windows\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Capabilities | C:\Windows\explorer.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000\Software\Microsoft\Internet Explorer\GPU | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DomStorageState | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance | C:\Windows\explorer.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\EdpDomStorage\microsoft.windows.cortana | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\Total\ = "152" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\Total\ = "185" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\windows.cortana | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\microsoft.windows.cortana\ = "23" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\microsoft.windows.cortana | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\microsoft.windows.cortana\ = "56" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\EdpDomStorage | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\Total | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\windows.cortana\Total = "23" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\DOMStorage\windows.cortana\Total = "56" | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify\UserStartTime = "133471088902041236" | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell | C:\Windows\explorer.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\EdpDomStorage\Total | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify\IconStreams = 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| C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU | C:\Windows\explorer.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.cortana_cw5n1h2txyewy\Internet Explorer\EdpDomStorage\windows.cortana | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bingo.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2280 wrote to memory of 4236 | N/A | C:\Users\Admin\AppData\Local\Temp\bingo.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2280 wrote to memory of 4236 | N/A | C:\Users\Admin\AppData\Local\Temp\bingo.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\905f469d687e4d4ea10c950d83b75cf0 /t 3208 /p 3204
C:\Windows\explorer.exe
explorer.exe
C:\Users\Admin\AppData\Local\Temp\bingo.exe
"C:\Users\Admin\AppData\Local\Temp\bingo.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
C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
"C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.80.50.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
Files
memory/2280-0-0x0000000000BF0000-0x0000000000F14000-memory.dmp
memory/2280-1-0x00007FFFD9A60000-0x00007FFFDA44C000-memory.dmp
memory/2280-2-0x000000001BED0000-0x000000001BEE0000-memory.dmp
memory/2280-4-0x00007FFFD9A60000-0x00007FFFDA44C000-memory.dmp
memory/4508-5-0x0000000003510000-0x0000000003511000-memory.dmp
memory/4800-12-0x0000029002880000-0x00000290028A0000-memory.dmp
memory/4800-14-0x0000029002A00000-0x0000029002A20000-memory.dmp
memory/2280-57-0x000000001BED0000-0x000000001BEE0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-31 23:58
Reported
2024-01-01 00:03
Platform
win10v2004-20231215-en
Max time kernel
186s
Max time network
200s
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\bingo.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2224 wrote to memory of 3552 | N/A | C:\Users\Admin\AppData\Local\Temp\bingo.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2224 wrote to memory of 3552 | N/A | C:\Users\Admin\AppData\Local\Temp\bingo.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\bingo.exe
"C:\Users\Admin\AppData\Local\Temp\bingo.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 |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.239.69.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
Files
memory/2224-0-0x00000000007A0000-0x0000000000AC4000-memory.dmp
memory/2224-1-0x00007FFCE32C0000-0x00007FFCE3D81000-memory.dmp
memory/2224-2-0x00000000012A0000-0x00000000012B0000-memory.dmp
memory/2224-4-0x00007FFCE32C0000-0x00007FFCE3D81000-memory.dmp
memory/2224-5-0x00000000012A0000-0x00000000012B0000-memory.dmp