11 August 19, 18:50
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How the GermanWiper ransomware infects computers. The data is wiped from the start, with no chance of recovery.
German companies and employees of German companies, in particular, are faced with a devious wave of ransomware attacks. While the new ransomware strain has been targeting mostly German victims so far, there’s no telling how far it may spread. We should all be aware of how the ransomware infects devices and how it works.
The GermanWiper ransomware earned its name not just because of the German focus of its intended targets, but also because it’s particularly devious. It doesn’t really encrypt data with a secret key, like other ransomware, awaiting payment in order to decrypt it.
With this one, there’s a nasty twist. The GermanWiper ransomware overwrites the data with strings of zeroes, rendering it completely unusable (wiped) forever. Nevertheless, it still acts like typical ransomware, falsely promising the victims that their files will be back if they pay a fee.
How Does the GermanWiper Ransomware Spread?
The victims of the GermanWiper ransomware typically receive a German-language email on behalf of a phony job applicant. The spam email pretends to be from a certain Lena Kretschmer, who is looking for a job and is sending the target a job application.
The common subject line of the email is “Ihr Stellenangebot – Bewerbung [Your job offer – Application] – Lena Kretschmer“. If the target opens it, they will notice that the email also contains an attachment named “Unterlagen_Lena_Kretschmer.zip”
If the victim makes the mistake of opening the zip archive, they will then get what looks like PDF files (with the correct file extension, .pdf). The files are actually link files (LNK) masquerading as PDF files, and once opened they will begin running malicious commands on the machine, infecting it.