A large-scale
malicious campaign called DriveSurge has been documented by Dark Reading
researchers, revealing the compromise of thousands of legitimate websites to
distribute ClickFix and FakeUpdate malware through social engineering attacks
targeting everyday internet users. The campaign represents the continuing
sophistication of drive-by compromise operations that exploit the trust users
place in websites they visit regularly.
ClickFix
attacks present users with fake error messages claiming that their browser
needs to execute a command to fix a displayed problem. The messages include a
"fix" that involves opening a terminal or run dialog and pasting
attacker-provided code. Remarkably, this technique continues to succeed despite
its inherent visibility: users are literally being asked to execute malicious
code themselves. The success of ClickFix speaks to both the effectiveness of
social engineering and the general population's lack of security awareness.
FakeUpdate
attacks, perfected by groups like the SocGholish organization disrupted earlier
this year, present realistic-looking browser update notifications to website
visitors. When visitors click to update, they download malware. The compromised
legitimate websites that host these attacks provide a form of camouflage:
security tools that block connections to known malicious domains often cannot
effectively block content served from legitimate websites that have been
secretly modified.
DriveSurge's
scale — thousands of compromised sites — reflects the effectiveness of
automated website compromise at scale. The attackers reportedly identified
target sites through automated vulnerability scanning, focusing on WordPress
installations with outdated plugins or weak administrative credentials. Once
access was obtained, automated tools deployed the attack code across all
compromised sites simultaneously, creating a distribution network of thousands
of malicious pages served from apparently legitimate domains.
Webmasters
and organizations hosting websites should treat this incident as a call to
action on website security fundamentals. Maintaining up-to-date WordPress core
and plugin versions, implementing Web Application Firewalls, using strong and
unique administrative credentials, and monitoring websites for unauthorized
content changes are basic hygiene measures that would have prevented most of
the DriveSurge compromises. Website integrity monitoring — tools that detect
unexpected changes to website files — should be considered a standard component
of any web presence security program.
Comments