Six more Chrome Extensions developers discovered that their account had been broken in the last four months, according to new findings yesterday from its security researcher Proofpoint, Caffeine.
Earlier this month, we mentioned about it hijack another expansion of Chrome (Copyfish). As seen in all cases, the attackers used "phishing" emails to trick developers into giving them credentials to Chrome developer accounts.
Kafeine Security Investigator identified six extra Chrome extensions that were occupied in the same way.
The list includes:
Web Paint one [source] Social Fixer one [source] TouchVPN
Betternet VPN
If you now add the total installations from the eight extensions, you will see that the attackers managed to deliver the malicious code τους σε περίπου 4,8 millions users.
Google, on the other hand, has reportedly warned Chrome extension developers to be very wary of phishing efforts.
Google sent out a warning two weeks ago because in all of the above attacks the electronic fishing it was the first step in the process.
Security investigator Kafeine analyzed the malicious code he found in some of the extensions and discovered that it was designed to perform the following functions:
- Wait at least ten minutes after installing - updating the extension
- Retrieve a JavaScript file from a random DGA-generated domain
- Collection of certification aggregates from the program browsing of the user
- Replace ads with ads provided by the malicious user
- Most ad replacements come from adult portals
- Display a user notification pop-up message informing them of a error and redirects to other websites adding more traffic to them
The phishing attacks, according to the researcher, took place in May 2017, and seem to be related to the infrastructure used in another malicious extension of Chrome, which was discovered in June 2016.
This shows that the malicious users behind these attacks are well-versed in the Chrome and Chrome Web Store extensions and will probably continue their attacks.
