Analysis Overview
SHA256
19a7fd629bf8badfd4703785c8af9fbb3396689a47d2375274c1fae6629ee24b
Threat Level: Known bad
The file ia.exe was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Quasar family
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Checks SCSI registry key(s)
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-03 09:58
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
2024-08-03 09:58
Reported
2024-08-03 10:00
Platform
win10v2004-20240802-en
Max time kernel
94s
Max time network
96s
Command Line
Signatures
Quasar RAT
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:\Windows\system32\ia\Client.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\ia\Client.exe | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia\Client.exe | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia\Client.exe | C:\Windows\system32\ia\Client.exe | N/A |
| File opened for modification | C:\Windows\system32\ia | C:\Windows\system32\ia\Client.exe | N/A |
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 |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\ia\Client.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 |
| Token: 33 | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeIncBasePriorityPrivilege | 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 4160 wrote to memory of 4296 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4160 wrote to memory of 4296 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4160 wrote to memory of 880 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\system32\ia\Client.exe |
| PID 4160 wrote to memory of 880 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\system32\ia\Client.exe |
| PID 880 wrote to memory of 4396 | N/A | C:\Windows\system32\ia\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 880 wrote to memory of 4396 | N/A | C:\Windows\system32\ia\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ia.exe
"C:\Users\Admin\AppData\Local\Temp\ia.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "ia" /sc ONLOGON /tr "C:\Windows\system32\ia\Client.exe" /rl HIGHEST /f
C:\Windows\system32\ia\Client.exe
"C:\Windows\system32\ia\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "ia" /sc ONLOGON /tr "C:\Windows\system32\ia\Client.exe" /rl HIGHEST /f
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| NL | 52.111.243.31:443 | tcp | |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| GB | 2.22.144.81:80 | tcp |
Files
memory/4160-0-0x00007FFE9DF53000-0x00007FFE9DF55000-memory.dmp
memory/4160-1-0x0000000000C20000-0x0000000000F44000-memory.dmp
memory/4160-2-0x00007FFE9DF50000-0x00007FFE9EA11000-memory.dmp
C:\Windows\System32\ia\Client.exe
| MD5 | 5828b4f3710d309100812b3f698a34c2 |
| SHA1 | 64c5979a98bc2855bdc440d9fc669d5f63cfaa9f |
| SHA256 | 19a7fd629bf8badfd4703785c8af9fbb3396689a47d2375274c1fae6629ee24b |
| SHA512 | 2888bd591344bf43cb03edc7c70e8a6a9200c17f97df0ea3bb0883a5b0aa62b4464d736e659f7b23a4303b3376e36c302882ff85054982649be9a1ccbca50127 |
memory/4160-10-0x00007FFE9DF50000-0x00007FFE9EA11000-memory.dmp
memory/880-9-0x00007FFE9DF50000-0x00007FFE9EA11000-memory.dmp
memory/880-11-0x00007FFE9DF50000-0x00007FFE9EA11000-memory.dmp
memory/880-12-0x0000000002780000-0x00000000027D0000-memory.dmp
memory/880-13-0x000000001B910000-0x000000001B9C2000-memory.dmp
memory/880-14-0x00007FFE9DF50000-0x00007FFE9EA11000-memory.dmp
memory/2420-17-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-16-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-15-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-27-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-26-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-25-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-24-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-23-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-22-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp
memory/2420-21-0x000001B3B87B0000-0x000001B3B87B1000-memory.dmp