Win32/Napolar [Threat Name] go to Threat
Win32/Napolar.A [Threat Variant Name]
| Category | trojan |
| Size | 105472 B |
| Aliases | Trojan-Dropper.Win32.Dapato.dbvf (Kaspersky) |
| Trojan:Win32/Napolar.A (Microsoft) | |
| Win32:Napolar-F (Avast) |
Short description
The trojan serves as a backdoor.
It can be controlled remotely. It uses techniques common for rootkits.
Installation
When executed, the trojan copies itself into the following location:
- %startup%\lsass.exe
This causes the trojan to be executed on every system start.
The trojan creates the following folders:
- %appdata%\SlrPlugins\
The trojan creates and runs a new thread with its own program code in all running processes.
Information stealing
Win32/Napolar.A is a trojan that steals sensitive information.
The trojan collects the following information:
- computer name
- user name
The trojan attempts to send gathered information to a remote machine.
Other information
The trojan acquires data and commands from a remote computer or the Internet.
The trojan contains a URL address. The HTTP protocol is used.
It can execute the following operations:
- download files from a remote computer and/or the Internet
- run executable files
- monitor network traffic
- perform DoS/DDoS attacks
- open a specific URL address
- set up a proxy server
The trojan hides its presence in the system.
The trojan hooks the following Windows APIs:
- DbgUiRemoteBreakin (ntdll.dll)
- KiUserExceptionDispatcher (ntdll.dll)
- ZwQueryDirectoryFile (ntdll.dll)
- ZwResumeThread (ntdll.dll)
- ZwSetValueKey (ntdll.dll)
- send (ws2_32.dll)
The trojan contains both 32-bit and 64-bit program components.