Analysis Overview
SHA256
9e9ff4b542d31bc8a8a52099758c9cb274727d341881c8df448d8f33ffc20117
Threat Level: Known bad
The file Client-built.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Unsigned PE
Enumerates physical storage devices
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-10-31 00:58
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
2024-10-31 00:58
Reported
2024-10-31 01:16
Platform
win10ltsc2021-20241023-en
Max time kernel
1049s
Max time network
1052s
Command Line
Signatures
Quasar RAT
Quasar family
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_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\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_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.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
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2512 wrote to memory of 3160 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2512 wrote to memory of 3160 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Java update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /0
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 226.108.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| US | 8.8.8.8:53 | checkappexec.microsoft.com | udp |
| GB | 51.140.242.104:443 | checkappexec.microsoft.com | tcp |
| US | 8.8.8.8:53 | 104.242.140.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| US | 8.8.8.8:53 | fd.api.iris.microsoft.com | udp |
| FR | 20.199.58.43:443 | fd.api.iris.microsoft.com | tcp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| US | 8.8.8.8:53 | 71.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| US | 8.8.8.8:53 | 101.209.201.84.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| US | 8.8.8.8:53 | 16.173.189.20.in-addr.arpa | udp |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp | |
| N/A | 10.127.0.227:4782 | tcp |
Files
memory/2512-0-0x00007FFB372E3000-0x00007FFB372E5000-memory.dmp
memory/2512-1-0x0000000000620000-0x0000000000944000-memory.dmp
memory/2512-2-0x00007FFB372E0000-0x00007FFB37DA2000-memory.dmp
memory/2512-3-0x000000001CD90000-0x000000001CDE0000-memory.dmp
memory/2512-4-0x000000001CEA0000-0x000000001CF52000-memory.dmp
memory/2512-5-0x00007FFB372E3000-0x00007FFB372E5000-memory.dmp
memory/2512-6-0x00007FFB372E0000-0x00007FFB37DA2000-memory.dmp
memory/1064-7-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-8-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-9-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-13-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-14-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-15-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-16-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-17-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-18-0x000001EF3E110000-0x000001EF3E111000-memory.dmp
memory/1064-19-0x000001EF3E110000-0x000001EF3E111000-memory.dmp