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Home security Rietspoof malware spreads through Facebook Messenger and Skype

Rietspoof malware spreads through Facebook Messenger and Skype

malwareIn a report released on Saturday (February 16), the researchers described a new malware, which they described as "multi-step malware", which was first detected in 2018 in August, but was largely ignored at that time, of his rare activity.

When the team of researchers began to monitor it malware, was updated only once a month. However, since January of 2019, the company saw a remarkable increase in the number of times malware was being updated.

According to Avast, malware is now spreading on a daily basis.

Rietspoof malware

Το Rietspoof έχει τη δυνατότητα να μολύνει τα θύματα, να αποκτά πρόσβαση στους μολυσμένους ξενιστές και στη συνέχεια να κάνει λήψη άλλων στελεχών κακόβουλου λογισμικού, ανάλογα με τις εντολές που λαμβάνει από έναν command & control (C&C) server.

Η πρόσβαση αποκτάται τοποθετώντας ένα αρχείο LNK στο φάκελο Windows / Startup. “Αυτό το αρχείο τρέχει ένα εκτεταμένο αρχείο PE μετά την εκκίνηση, για να εξασφαλίσει ότι το εκτελέσιμο αρχείο θα τρέξει αν το μηχάνημα επανεκκινηθεί”, δήλωσε η Avast.

This is a feature that does not go unnoticed, as most antivirus products are tracking this type of file, but Avast says Rietspoof appears to have legitimate certificates that allow it to bypass security checks.

Malware has four different stages

The process of attacking a device consists of four different stages. The actual malicious software enters the third stage, with the final and final stage destined to receive a more unpleasant and effective malware.

“Παρατηρήσαμε ότι η ανάπτυξη αυτού του τρίτου σταδίου εξελίσσεται ταχέως, μερικές φορές τρέχοντας δύο διαφορετικούς κλάδους ταυτόχρονα. Κατά την ανάλυσή μας, το πρωτόκολλο επικοινωνίας τροποποιήθηκε πολλές φορές και προστέθηκαν νέα χαρακτηριστικά”, δήλωσε η Avast.

Η Avast περιέγραψε το Rietspoof malware ως “dropper” ή “downloader”, το οποίο λειτουργεί παρόμοια με ένα Trojan και εγκαθιστά κι άλλα στελέχη malware.

When it is alone, this feature is limited, according to security researchers. It can download, execute, upload and delete files and in case of emergency, it can also be deleted.

Avast argues that there are likely to be more stages of infection that have not yet been discovered.

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