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)
Checks BIOS information in registry
Themida packer
Checks whether UAC is enabled
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Checks SCSI registry key(s)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-09 12:29
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
2024-06-09 12:28
Reported
2024-06-09 12:31
Platform
win11-20240426-en
Max time kernel
149s
Max time network
98s
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 |
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000_Classes\Local Settings | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Processes
C:\Users\Admin\AppData\Local\Temp\nyxia external.exe
"C:\Users\Admin\AppData\Local\Temp\nyxia external.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /0
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
Files
memory/3840-0-0x00007FF69E650000-0x00007FF69EF51000-memory.dmp
memory/3840-1-0x00007FFC7DA87000-0x00007FFC7DA89000-memory.dmp
memory/3840-2-0x00007FF69E650000-0x00007FF69EF51000-memory.dmp
memory/3840-3-0x00007FF69E650000-0x00007FF69EF51000-memory.dmp
memory/3840-4-0x00007FF69E650000-0x00007FF69EF51000-memory.dmp
memory/3840-5-0x00007FF69E650000-0x00007FF69EF51000-memory.dmp
memory/3840-6-0x00007FF69E650000-0x00007FF69EF51000-memory.dmp
memory/3972-7-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-9-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-8-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-13-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-19-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-18-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-17-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-16-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-15-0x00000296582B0000-0x00000296582B1000-memory.dmp
memory/3972-14-0x00000296582B0000-0x00000296582B1000-memory.dmp