Welcome to the Virus Encyclopedia of Panda Security.
It spreads and affects other computers.
It searches for and steals passwords saved for certain Windows services.
It causes the loss of information stored on the computer, either specific files or data in general.
It carries out actions that decrease the security level of the computer.
It uses stealth techniques to avoid being detected by the user.
, via email, via mapped drives, through shared network resources.
|First detected on:||June 25, 2007|
|Detection updated on:||June 25, 2007|
Tearec.F is a worm that spreads by copying itself, without infecting other files.
It captures certain information entered or saved by the user, with the corresponding threat to privacy:
passwords saved by certain Windows services.
It causes information loss:
different types of documents such as Word, Excel, PowerPoint, etc; it indiscriminately deletes random files.
It reduces the security level of the computer:
it terminates processes belonging to security tools, such as antivirus programs and firewalls, leaving the computer defenseless against attacks from other malware; it changes system permissions, decreasing the security level.
It uses stealth techniques to avoid being detected by the user:
- It terminates processes corresponding to several security tools, such as antivirus programs and firewalls, to prevent detection.
Tearec.F uses the following propagation or distribution methods:
- Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
- Email: sending emails that include a copy of itself as an attachment. The computer is infected when the attachment is run.
- Computer networks (mapped drives): it creates copies of itself in mapped drives.
- Computer networks (shared resources): it creates copies of itself in shared network resources to which it has access.
Tearec.F is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.
However, if the program Winzip is installed in the affected computer, it opens it when it is run.