Analysis Overview
SHA256
29e1a7d0ae4f700212bd0395e9fb511af08fbef9c1bf35aa9e77c6f2ab931b14
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)
Creates new service(s)
Drops file in Drivers directory
Themida packer
Checks computer location settings
Checks BIOS information in registry
Checks whether UAC is enabled
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in System32 directory
Drops file in Windows directory
Launches sc.exe
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: LoadsDriver
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-10 18:17
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
2024-06-10 18:17
Reported
2024-06-10 18:18
Platform
win10v2004-20240426-en
Max time kernel
14s
Max time network
17s
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 |
Creates new service(s)
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\System32\drivers\winhb.sys | 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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation | 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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2444} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2879} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2859} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2869} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\System32\IME\IMETC\{69CD1F2D-DF68-4E23-9108-1B70783F2879} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2899} | 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 |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2892} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2859} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-UPDATE} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
| File opened for modification | C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2893} | C:\Users\Admin\AppData\Local\Temp\Loader.exe | N/A |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\sc.exe | N/A |
| N/A | N/A | C:\Windows\system32\sc.exe | N/A |
| N/A | N/A | C:\Windows\system32\sc.exe | N/A |
| N/A | N/A | C:\Windows\system32\sc.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | 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 sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
C:\Windows\system32\sc.exe
sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc start windowsproc
C:\Windows\system32\sc.exe
sc start windowsproc
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc start windowsproc
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\sc.exe
sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
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\sc.exe
sc start windowsproc
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c cls
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c cls
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | download.simpletoolz.fun | udp |
| US | 104.21.14.14:443 | download.simpletoolz.fun | tcp |
| US | 8.8.8.8:53 | 14.14.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | keyauth.win | udp |
| US | 104.26.1.5:443 | 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 | 5.1.26.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.97.55.23.in-addr.arpa | udp |
| N/A | 127.0.0.1:64241 | tcp | |
| N/A | 127.0.0.1:64243 | tcp | |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
Files
memory/3944-0-0x0000000140000000-0x00000001425AE000-memory.dmp
memory/3944-1-0x0000000140000000-0x00000001425AE000-memory.dmp
memory/3944-2-0x0000000140000000-0x00000001425AE000-memory.dmp
memory/3944-3-0x0000000140000000-0x00000001425AE000-memory.dmp
memory/3944-4-0x00007FF906B10000-0x00007FF906B12000-memory.dmp
memory/3944-15-0x0000000140000000-0x00000001425AE000-memory.dmp
memory/3944-16-0x0000000140000000-0x00000001425AE000-memory.dmp