Analysis Overview
SHA256
8970a16295267765ab6b690e7f0d4d1e9bd5cc0b7a51d2d048bf069fcc8adc02
Threat Level: Likely malicious
The file BakosFree2.exe was found to be: Likely malicious.
Malicious Activity Summary
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Checks BIOS information in registry
Themida packer
Checks whether UAC is enabled
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Delays execution with timeout.exe
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-15 16:41
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
2024-06-15 16:40
Reported
2024-06-15 16:43
Platform
win10v2004-20240508-en
Max time kernel
43s
Max time network
45s
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\BakosFree2.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\BakosFree2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\BakosFree2.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 |
| 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\BakosFree2.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\BakosFree2.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\BakosFree2.exe
"C:\Users\Admin\AppData\Local\Temp\BakosFree2.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c color 6
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c cls
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\BakosFree2.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
C:\Windows\system32\certutil.exe
certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\BakosFree2.exe" MD5
C:\Windows\system32\find.exe
find /i /v "md5"
C:\Windows\system32\find.exe
find /i /v "certutil"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c start cmd /C "color b && title Error && echo Couldn't resolve host name && timeout /t 5"
C:\Windows\system32\cmd.exe
cmd /C "color b && title Error && echo Couldn't resolve host name && timeout /t 5"
C:\Windows\system32\timeout.exe
timeout /t 5
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | keyauth.win | udp |
| N/A | 127.0.0.1:57622 | tcp | |
| N/A | 127.0.0.1:57624 | tcp |
Files
memory/3668-0-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-1-0x00007FF921990000-0x00007FF921992000-memory.dmp
memory/3668-3-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-4-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-2-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-5-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-6-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-7-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp
memory/3668-9-0x00007FF6B1B20000-0x00007FF6B2573000-memory.dmp