Exploit This

Security News, Exploits, and Vulnerabilities.

WannaCry and Lazarus Group – the missing link?

Moments ago, Neel Mehta, a researcher at Google posted a mysterious message on Twitter. The cryptic message in fact refers to similarity between samples that have shared code between themselves. The two samples Neel refers to post are a Wannacry cryptor sample and a Lazarus APT group sample.

WannaCry FAQ: What you need to know today

Friday May 12th marked the start of the dizzying madness that has been ‘WannaCry’, the largest ransomware infection in history. Defenders have been running around trying to understand the malware’s capabilities. In the process, a lot of wires have gotten crossed and we figured it’s time to sit down and set the record straight on what we know, what we wish we knew, and what the near future might hold for us going forward.

BSides Denver 2017

Everyone loves a decent security conference, and BSides Denver provides one with space to breathe. Folks in sunny Colorado looking for a fine local gathering found talks on advanced social engineering, APT herding, securing smart cities and more. Even though… Read Full Article

WannaCry ransomware used in widespread attacks all over the world

Earlier today, our products detected and successfully blocked a large number of ransomware attacks around the world. In these attacks, data is encrypted with the extension “.WCRY” added to the filenames. Our analysis indicates the attack, dubbed “WannaCry”, is initiated through an SMBv2 remote code execution in Microsoft Windows.

False Positives: Why Vendors Should Lower Their Rates and How We Achieved the Best Results

In pursuit of a high cyberthreat detection rate, the some developers of cybersecurity solutions neglect the subject matter of false positives, and unfairly so. Regretfully, only then does the idea dawn on these developers that high-quality protection from cyberthreats involves not only prevention but also a low false-positive rate.

Clash of Greed

Yet, the more popular game is, the higher the probability that fraudsters will be looking to make a fortune on that popularity by, for example, organizing phishing attacks on the player base. Those phishing attacks, though always quite similar in their nature, are very competently planned.

Use of DNS Tunneling for C&C Communications

Often, virus writers don’t even bother to run encryption or mask their communications. However, you do get the occasional off-the-wall approaches that don’t fall into either of the categories. Take, for instance, the case of a Trojan that Kaspersky Lab researchers discovered in mid-March and which establishes a DNS tunnel for communication with the C&C server.

Hajime, the mysterious evolving botnet

Hajime (meaning ‘beginning’ in Japanese) is an IoT worm that was first mentioned on 16 October 2016 in a public report by RapidityNetworks. In this blogpost we outline some of the recent ‘improvements’ to Hajime, some techniques that haven’t been made public, and some statistics about infected IoT devices.

XPan, I am your father

While we have previously written on the now infamous XPan ransomware family, some of it’s variants are still affecting users primarily located in Brazil. This sample is what could be considered as the “father” of other XPan ransomware variants. A considerable amount of indicators within the source code depict the early origins of this sample.

Personalized Spam and Phishing

Lately we have been noticing an opposite tendency occurring quite often, wherein fraud becomes personalized and spammers invent new methods to persuade the recipient that the message is addressed personally to him. Thus, in the malicious mailing that we discovered last month, spammers used the actual postal addresses of the recipients in messages to make them seem as credible as possible.

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