Events

Catching Facebook worms in Russia

Just another Sunday evening – I get to Moscow, check in and naturally go online to Facebook to inform everyone about how my trip went. Not very exciting, right? Wrong. A friend had ‘sent’ me a strange-looking link via Facebook IM. A closer look revealed that it was a link being spread by a new and active Facebook worm. The worm was stealing login credentials – and had already successfully stolen the credentials from thousands of people.

The worm spreads through Facebook instant messenger – just like many other Facebook worms. The message states the following: “Is this you?” followed by a link to the malicious Facebook app. The Facebook application is pretty simple; it loads new content into an iframe. The page which is loaded within the iframe is a simple phishing site: it asks for your Facebook credentials so that you can see some new content. Below is a screenshot of the login page:

I decided to investigate the phishing site a bit more, so I checked for some common directories on the server; directories which could contain more information about the worm and I found a directory which contained the Apache access logs. When analyzing the content of the log file I saw that someone was trying to access a file named acc.txt. I downloaded acc.txt and saw that the file contained stolen accounts: in the first version of acc.txt which I downloaded I saw that the attacker had collected over 3000 accounts! I downloaded the acc.txt at 5-minute intervals, and within 20 minutes, the number of stolen accounts went from 3000 to over 6000.

I immediately contacted the Facebook security team – who responded equally rapidly. The malicious page is down, and the Facebook team is going through their remediation routine.

This phishing attack was very simple and yet thousands of people fell for it!!! My guess is that there are lots of other similar attacks happening as I write this.

So… when you are logged on to Facebook, do NOT trust anything which is sent to you, especially not when it asks for your password or credit card information.

Catching Facebook worms in Russia

Your email address will not be published. Required fields are marked *

 

Reports

APT trends report Q3 2021

The APT trends reports are based on our threat intelligence research and provide a representative snapshot of what we have discussed in greater detail in our private APT reports. This is our latest installment, focusing on activities that we observed during Q3 2021.

Lyceum group reborn

According to older public researches, Lyceum conducted operations against organizations in the energy and telecommunications sectors across the Middle East. In 2021, we have been able to identify a new cluster of the group’s activity, focused on two entities in Tunisia.

GhostEmperor: From ProxyLogon to kernel mode

While investigating a recent rise of attacks against Exchange servers, we noticed a recurring cluster of activity that appeared in several distinct compromised networks. With a long-standing operation, high profile victims, advanced toolset and no affinity to a known threat actor, we decided to dub the cluster GhostEmperor.

Subscribe to our weekly e-mails

The hottest research right in your inbox