Analysis Overview
SHA256
19bddef132af20da74c89fb263b1ae89f9762eba06382e69cccdfc9048e45917
Threat Level: Likely malicious
The file nyxia external.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 behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-10 05:20
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 05:17
Reported
2024-06-10 05:28
Platform
win7-20240221-en
Max time kernel
140s
Max time network
123s
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\nyxia external.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\nyxia external.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\nyxia external.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\nyxia external.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1800 wrote to memory of 1720 | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | C:\Windows\system32\WerFault.exe |
| PID 1800 wrote to memory of 1720 | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | C:\Windows\system32\WerFault.exe |
| PID 1800 wrote to memory of 1720 | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | C:\Windows\system32\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\nyxia external.exe
"C:\Users\Admin\AppData\Local\Temp\nyxia external.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1800 -s 196
Network
Files
memory/1800-1-0x0000000077490000-0x0000000077492000-memory.dmp
memory/1800-0-0x000000013F980000-0x0000000140281000-memory.dmp
memory/1800-4-0x000000013F980000-0x0000000140281000-memory.dmp
memory/1800-5-0x000000013F980000-0x0000000140281000-memory.dmp
memory/1800-3-0x000000013F980000-0x0000000140281000-memory.dmp
memory/1800-2-0x000000013F980000-0x0000000140281000-memory.dmp
memory/1800-6-0x000000013F980000-0x0000000140281000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-10 05:17
Reported
2024-06-10 05:27
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
149s
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\nyxia external.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\nyxia external.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\nyxia external.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\nyxia external.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\nyxia external.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\nyxia external.exe
"C:\Users\Admin\AppData\Local\Temp\nyxia external.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/3988-0-0x00007FF62B1F0000-0x00007FF62BAF1000-memory.dmp
memory/3988-1-0x00007FFB73570000-0x00007FFB73572000-memory.dmp
memory/3988-3-0x00007FF62B1F0000-0x00007FF62BAF1000-memory.dmp
memory/3988-2-0x00007FF62B1F0000-0x00007FF62BAF1000-memory.dmp
memory/3988-4-0x00007FF62B1F0000-0x00007FF62BAF1000-memory.dmp
memory/3988-5-0x00007FF62B1F0000-0x00007FF62BAF1000-memory.dmp
memory/3988-6-0x00007FF62B1F0000-0x00007FF62BAF1000-memory.dmp