BZub.BS is a member of the BZub family of trojan spyware. These types of trojans compromise system security by providing authentication information (logon, passwords, credit card numbers, etc.) to malicious users. This trojan steals the logon information of some Online German Bank accounts. Aside from that, it also steals email accounts and passwords that are stored in the user's computer system.
Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.
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There are some reports from customers that BZub.BS arrives via spam mail. See the screenshot below:
This malware has two components:
Upon the execution of Rakningen.exe, it will install its .dll component by dropping the file Ipv6mons.dll into the Windows Systems Directory. It adds several encrypted or random registry values under the following subkey as its auto start technique:
The registry values are the following:
Moreover, it registers itself as a Browser Helper Object (BHO) using the following registry entries:
It also registers its Internet Explorer as an authorized application to prevent the Windows Firewall from blocking network transactions through the said program:
BZub.BS also makes a copy of the existing file C:\lofg.xxx to C:\ewerufeassur8fr.It deletes the following files:
BZub.BS connects to the following FTP site:
Creates a file named info.txt containing information about the infected system:
Steals information about the following by monitoring websites/forms and querying some registries:
The malware steals logon details to banks that have the following strings:
This malware sends gathered information via FTP using any of the following files: