For around 48 hours between June 24 and 27, crooks used Facebook spam messages to distribute malware that hijacked user accounts to carry out operations such as giving likes and sharing unwanted content.
A security researcher from Russian security firm Kaspersky Lab discovered the campaign, which was spreading among Facebook accounts in the form of a spam message received from a friend that informed users about being mentioned in a comment.
Malware used a two-stage attack scenario
Accessing the link would start the first phase of the two-stage attack, which would secretly download a trojan on the user's computer.
During the second stage, this trojan would download and secretly install an extension in the user's Chrome browser, if found on the infected system.
