Analysis Overview
SHA256
98191a1b44250b407896dae622506d8f4fc248f7d121aa83d4ece8e218bdcb13
Threat Level: Likely malicious
The file Loader.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
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-11 11:34
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
2024-06-11 11:34
Reported
2024-06-11 11:37
Platform
win7-20240508-en
Max time kernel
121s
Max time network
121s
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\Loader.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\Loader.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\Loader.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 |
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\Loader.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
Network
Files
memory/2036-0-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/2036-1-0x0000000076D30000-0x0000000076D32000-memory.dmp
memory/2036-2-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/2036-3-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/2036-4-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/2036-6-0x0000000140000000-0x0000000140B14000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-11 11:34
Reported
2024-06-11 11:35
Platform
win10v2004-20240508-en
Max time kernel
24s
Max time network
27s
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\Loader.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\Loader.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 |
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\Loader.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Loader.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 SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
C:\Windows\system32\certutil.exe
certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5
C:\Windows\system32\find.exe
find /i /v "md5"
C:\Windows\system32\find.exe
find /i /v "certutil"
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\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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | keyauth.win | udp |
| N/A | 127.0.0.1:58115 | tcp | |
| N/A | 127.0.0.1:58117 | tcp |
Files
memory/1448-0-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/1448-2-0x00007FFD79E10000-0x00007FFD79E12000-memory.dmp
memory/1448-3-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/1448-1-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/1448-4-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/1448-6-0x0000000140000000-0x0000000140B14000-memory.dmp
memory/1448-8-0x0000000140000000-0x0000000140B14000-memory.dmp