Analysis Overview
SHA256
60c57f14c2e0e0df0bda16646b21dddceaee0159dafbbb8daba310d4e1b5be6c
Threat Level: Likely malicious
The file avsat_antivirus.exe was found to be: Likely malicious.
Malicious Activity Summary
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Themida packer
Checks BIOS information in registry
Checks whether UAC is enabled
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-16 05:19
Signatures
Themida packer
| 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
2024-06-16 05:19
Reported
2024-06-16 05:22
Platform
win10v2004-20240611-es
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
Themida packer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3256 wrote to memory of 2764 | N/A | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | C:\Windows\system32\cmd.exe |
| PID 3256 wrote to memory of 2764 | N/A | C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe | C:\Windows\system32\cmd.exe |
| PID 2764 wrote to memory of 2400 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\certutil.exe |
| PID 2764 wrote to memory of 2400 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\certutil.exe |
| PID 2764 wrote to memory of 2712 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\find.exe |
| PID 2764 wrote to memory of 2712 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\find.exe |
| PID 2764 wrote to memory of 3508 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\find.exe |
| PID 2764 wrote to memory of 3508 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\find.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe
"C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
C:\Windows\system32\certutil.exe
certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\avsat_antivirus.exe" MD5
C:\Windows\system32\find.exe
find /i /v "md5"
C:\Windows\system32\find.exe
find /i /v "certutil"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | keyauth.win | udp |
| US | 172.67.72.57:443 | keyauth.win | tcp |
| US | 8.8.8.8:53 | x2.c.lencr.org | udp |
| BE | 23.55.97.11:80 | x2.c.lencr.org | tcp |
| US | 8.8.8.8:53 | 57.72.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.97.55.23.in-addr.arpa | udp |
| N/A | 127.0.0.1:64269 | tcp | |
| N/A | 127.0.0.1:64271 | tcp | |
| US | 172.67.72.57:443 | keyauth.win | tcp |
| N/A | 127.0.0.1:64277 | tcp | |
| N/A | 127.0.0.1:64279 | tcp | |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.15.31.184.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 27.178.89.13.in-addr.arpa | udp |
Files
memory/3256-0-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-1-0x00007FFBF1590000-0x00007FFBF1592000-memory.dmp
memory/3256-3-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-2-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-4-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-7-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-6-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-5-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-8-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-9-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-10-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-11-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-12-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp
memory/3256-13-0x00007FF6D6350000-0x00007FF6D6DEF000-memory.dmp