Analysis Overview
SHA256
7939f7d7f256502832c6c5236e9ab25adb6b42070055ed61003dead58c545d14
Threat Level: Known bad
The file Client-built2.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Checks SCSI registry key(s)
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-04 18:10
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
2024-01-04 18:10
Reported
2024-01-04 18:13
Platform
win10v2004-20231215-en
Max time kernel
94s
Max time network
94s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built2.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built2.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
Network
| Country | Destination | Domain | Proto |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 19.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.135.221.88.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 | 21.236.111.52.in-addr.arpa | udp |
Files
memory/1764-0-0x0000000000A60000-0x0000000000D84000-memory.dmp
memory/1764-1-0x00007FFB9BF70000-0x00007FFB9CA31000-memory.dmp
memory/1764-2-0x0000000002EE0000-0x0000000002EF0000-memory.dmp
memory/1764-3-0x000000001C480000-0x000000001C4D0000-memory.dmp
memory/1764-4-0x000000001C590000-0x000000001C642000-memory.dmp
memory/4704-6-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-7-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-8-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/1764-9-0x00007FFB9BF70000-0x00007FFB9CA31000-memory.dmp
memory/1764-10-0x0000000002EE0000-0x0000000002EF0000-memory.dmp
memory/4704-15-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-14-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-17-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-16-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-19-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-18-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
memory/4704-20-0x0000025AF6C80000-0x0000025AF6C81000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-04 18:10
Reported
2024-01-04 18:13
Platform
win11-20231215-en
Max time kernel
49s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | 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-built2.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built2.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built2.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built2.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"
Network
Files
memory/4492-0-0x0000000000310000-0x0000000000634000-memory.dmp
memory/4492-1-0x00007FF8F1040000-0x00007FF8F1B02000-memory.dmp
memory/4492-2-0x000000001B260000-0x000000001B270000-memory.dmp
memory/4492-3-0x000000001BC90000-0x000000001BCE0000-memory.dmp
memory/4492-4-0x000000001BDA0000-0x000000001BE52000-memory.dmp
memory/4492-5-0x00007FF8F1040000-0x00007FF8F1B02000-memory.dmp
memory/4492-6-0x000000001B260000-0x000000001B270000-memory.dmp