SANS ISC Diary - Tricky LNK points to TrickBot
· β˜• 1 min read
A Guest Diary of mine was published today on the SANS Internet Storm Center. In this one, we take a look at analyzing a malicious LNK file which leads us to a sample of Trickbot.

SANS ISC Diary - Open Redirect: A Small But Very Common Vulnerability
· β˜• 1 min read
A Guest Diary of mine was published today on the SANS Internet Storm Center. In this one, I discuss open redirect vulnerabilities and how to find them. If you’ve never heard of open redirects, this might be a useful introductory text.

Where are all the machines affected by BlueKeep hiding - part 2
· β˜• 4 min read
Last week, we took a look at Shodan results to try to determine which countries are the “richest” in the world when it comes to machines vulnerable to BlueKeep visible from the internet. Since the number of vulnerable machines Shodan detects grows every day (see the following chart), I thought it might be interesting to have another look at the numbers. But in a way which is a little different.

Where are all the machines affected by BlueKeep hiding?
· β˜• 1 min read
We've all read about the hundereds of thousands of machines affected by BlueKeep connected to the internet, but where are they hiding? With the help of Shodan, we can try to figure it out...

Half-open redirect vulnerability in Youtube
· β˜• 3 min read
If you open any Youtube video, which has in its description a link to an external URL, you may notice that the link points to a Youtube redirection mechanism (https://www.youtube.com/redirect?...), with the target URL being passed to it as a parameter, rather than to the target URL itself...

Analysis of an encrypted malicious DOC file and an (un)interesting phishing
· β˜• 6 min read
Couple of days ago, I found a pretty usual-looking phishing e-mail in one of the quarantine folders of my inbox. It was addressed to me and to 19 other security specialists and incident response teams and contained a text (in German - see bellow), informing us that the author saw a job offer to which she was responding with an application document attached to the e-mail. The attachment appeared to be an encrypted DOC file and the password (“123123”) was mentioned in the body of the message.

How big of a problem is the 'open redirect' in Babel?
· β˜• 4 min read
During a recent research into prevalence of open redirection vulnerabilities within the ccTLD .CZ we've done with my colleagues from ALEF CSIRT, I’ve noticed that many of the vulnerable sites seemed to be using CMS Made Simple with Babel multi-language module. This seemed to warrant a closer investigation...

Open Redirection Vulnerability in Babel
· β˜• 2 min read
In this post you may find description of a vulnerability I found in Babel - a CMSMS module - when searching for sites affected by Open Redirection vulnerabilities...

It's 2019 and WannaCry is still not dead
· β˜• 4 min read
Unless you live completely cut off from the rest of human civilization, chances are good you’ve heard about the WannaCry ransomware. However, so we’re all on the same page, I’ll go over the salient points of its history before discussing why it is still a threat. WannaCry - the first successful crypto-ransomware worm - started to spread on May 12th 2017 using the EternalBlue exploit and DoublePulsar backdoor implant (both courtesy of the Shadow Brokers and - by proxy - Equation Group/NSA) and supposedly hit more than 100 countries within the first 24 hours.