Analysis Overview
SHA256
6d456977f4d338c27ace3a30a24d10959c27101326bb015300059ed5ca6f57b8
Threat Level: Likely malicious
The file SecuriteInfo.com.Variant.Zusy.551321.399.736.dll 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 behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-10 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
2024-06-10 11:34
Reported
2024-06-10 11:36
Platform
win7-20240508-en
Max time kernel
119s
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:\Windows\SysWOW64\rundll32.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Windows\SysWOW64\rundll32.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 |
| 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:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1520 wrote to memory of 1216 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Zusy.551321.399.736.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Zusy.551321.399.736.dll,#1
Network
Files
memory/1216-0-0x0000000074850000-0x00000000753A1000-memory.dmp
memory/1216-1-0x0000000074860000-0x00000000753B1000-memory.dmp
memory/1216-2-0x0000000074850000-0x00000000753A1000-memory.dmp
memory/1216-4-0x0000000077D60000-0x0000000077D62000-memory.dmp
memory/1216-3-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-5-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-6-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-7-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-10-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-11-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-9-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-8-0x0000000074870000-0x00000000753C1000-memory.dmp
memory/1216-12-0x0000000074870000-0x00000000753C1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-10 11:34
Reported
2024-06-10 11:36
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
150s
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:\Windows\SysWOW64\rundll32.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Windows\SysWOW64\rundll32.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:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1064 wrote to memory of 4088 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1064 wrote to memory of 4088 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1064 wrote to memory of 4088 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Zusy.551321.399.736.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Zusy.551321.399.736.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 215.143.182.52.in-addr.arpa | udp |
Files
memory/4088-0-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-1-0x00000000779B4000-0x00000000779B6000-memory.dmp
memory/4088-2-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-3-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-4-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-6-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-7-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-8-0x00000000748C0000-0x0000000075411000-memory.dmp
memory/4088-5-0x00000000748C0000-0x0000000075411000-memory.dmp