Summary
Hearse.A is a backdoor that steals passwords and account information. It also installs a SOCKS proxy and a backdoor that allows access to an infected system. Hearse.A uses rootkit techniques to hide its files.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
- Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
- Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
- Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
System installation
When the backdoor file is run, it drops the following two files to the Windows system directory:
- zopenssl.dll
- zopenssld.sys
Then the backdoor creates the following registry key: [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\zopenssl] "DllName" = "zopenssl.dll" Durin the system start, this registry key loads the backdoor main file, zopenssl.dll, to the address space of Winlogon.exe. When the DLL is activated, it starts the rootkit as a system service and runs the actual backdoor.The rootkit system service is activated using the following arguments:
- BinaryPathName: zopenssld.sys
- ServiceName: zopenssld
- DisplayName: OPENSSL cryptoapi
Hearse.A may also create the following files:
- nwr7.ies4
- bklks.ies4
- nwr8.ies4
Rootkit Hiding Techniques
Hearse.A is able to hide the following items:
- Files and directories
When it is active it hides its own files.Hearse.A installs and executes a kernel-mode driver (zopenssld.sys) to execute code in privilege level 0 (kernel mode). The kernel-mode code replaces the following function pointers from the system service table:
- NtCreateProcess
- NtCreateProcessEx
- NtQueryDirectoryFile
This allows it to inject code into any newly created process. In addition, it hides files or directories with any of the following names:
- nwr7.ies4
- zopenssl.dll
- bklks.ies4
- zopenssld.sys
- nwr8.ies4
Backdoor functionality
Hearse.A uses HTTP requests for communicating with a remote server controlled by the attacker. The server may request the infected system to perform any of the following actions:
- Run any program on the system
- Download additional files
- Spawn an interactive command shell
- Create and send a screenshot of the desktop
- Collect and send passwords and other account information
- Uninstall the backdoor
Hearse.A also starts up a SOCKS proxy on the infected system. The proxy port is reported back to the attacker by including it in the HTTP requests described above.
More Support
Community
Ask questions in our Community.
User guides
Check the user guide for instructions.
Contact Support
Chat with with or call an agent.
Submit a Sample
Submit a file or URL for analysis.