Analysis Overview
SHA256
4a181732e82bac9de2926c6982ff94b2f513e8751a76f6eb3bb9eba4f7634f3d
Threat Level: Known bad
The file 4a181732e82bac9de2926c6982ff94b2f513e8751a76f6eb3bb9eba4f7634f3d was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Executes dropped EXE
Uses the VBS compiler for execution
Checks computer location settings
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-10 23:04
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-10 23:04
Reported
2023-01-10 23:06
Platform
win10v2004-20221111-en
Max time kernel
73s
Max time network
141s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\systemx888.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\4a181732e82bac9de2926c6982ff94b2f513e8751a76f6eb3bb9eba4f7634f3d.exe | N/A |
Uses the VBS compiler for execution
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.ipify.org | N/A | N/A |
| N/A | api.ipify.org | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 868 set thread context of 4152 | N/A | C:\Users\Admin\AppData\Roaming\systemx888.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings | C:\Windows\system32\OpenWith.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\4a181732e82bac9de2926c6982ff94b2f513e8751a76f6eb3bb9eba4f7634f3d.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\OpenWith.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4a181732e82bac9de2926c6982ff94b2f513e8751a76f6eb3bb9eba4f7634f3d.exe
"C:\Users\Admin\AppData\Local\Temp\4a181732e82bac9de2926c6982ff94b2f513e8751a76f6eb3bb9eba4f7634f3d.exe"
C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
C:\Users\Admin\AppData\Roaming\systemx888.exe
"C:\Users\Admin\AppData\Roaming\systemx888.exe"
C:\Windows\SysWOW64\cmd.exe
"cmd" /C schtasks /create /tn \pGLCR /tr "C:\Users\Admin\AppData\Roaming\systemx888.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn \pGLCR /tr "C:\Users\Admin\AppData\Roaming\systemx888.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /f
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 45.138.16.40:4782 | tcp | |
| N/A | 8.8.8.8:53 | tools.keycdn.com | udp |
| N/A | 185.172.148.96:443 | tools.keycdn.com | tcp |
| N/A | 8.8.8.8:53 | api.ipify.org | udp |
| N/A | 64.185.227.156:443 | api.ipify.org | tcp |
| N/A | 20.50.201.200:443 | tcp |
Files
memory/2216-132-0x00000000002A0000-0x0000000000376000-memory.dmp
memory/868-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\systemx888.exe
| MD5 | d561a17252e9cbb698307f1142f4b524 |
| SHA1 | 89490ef9113cad42253894332fb3efe033ca0ad3 |
| SHA256 | 9599d3f669b050eda2ca52cf249766c0103d5d4ae3519e09bdeb6944cff31a0f |
| SHA512 | da595d699140110db0614b104d53c8ba71f59ac510ef54f6f8a93fe70c7ac1825acc280d60bdb873544e164cfdcdb0adf1922a216c19a0f0aabaef8eb7a43264 |
C:\Users\Admin\AppData\Roaming\systemx888.exe
| MD5 | d561a17252e9cbb698307f1142f4b524 |
| SHA1 | 89490ef9113cad42253894332fb3efe033ca0ad3 |
| SHA256 | 9599d3f669b050eda2ca52cf249766c0103d5d4ae3519e09bdeb6944cff31a0f |
| SHA512 | da595d699140110db0614b104d53c8ba71f59ac510ef54f6f8a93fe70c7ac1825acc280d60bdb873544e164cfdcdb0adf1922a216c19a0f0aabaef8eb7a43264 |
memory/868-136-0x0000000000220000-0x0000000000424000-memory.dmp
memory/868-137-0x0000000005190000-0x0000000005734000-memory.dmp
memory/4412-138-0x0000000000000000-mapping.dmp
memory/5080-139-0x0000000000000000-mapping.dmp
memory/4152-140-0x0000000000000000-mapping.dmp
memory/4152-141-0x0000000000400000-0x0000000000484000-memory.dmp
memory/4152-142-0x00000000053E0000-0x0000000005472000-memory.dmp
memory/4152-143-0x0000000005370000-0x000000000537A000-memory.dmp
memory/4152-144-0x0000000006ED0000-0x00000000074E8000-memory.dmp
memory/4152-145-0x0000000006980000-0x00000000069D0000-memory.dmp
memory/4152-146-0x0000000006BF0000-0x0000000006CA2000-memory.dmp
memory/4152-147-0x0000000007C60000-0x0000000007CC6000-memory.dmp