malware'


Joomla! is one of the world's most popular content management systems (CMS). It enables users to build Web sites and powerful online applications. More than 3 percent of Web sites are running Joomla!, and it accounts for more than 9 percent of CMS market share. As of July 2017, Joomla! has been downloaded over 82 million times. Over 7,800 free and commercial extensions are available from the official Joomla! Extension Directory, and more are available from other sources. In my last blog, I discovered 2 Cross-Site Scripting (XSS) vulnerabilities... [Read More]
by RSS Zhouyuan Yang  |  Jul 12, 2017  |  Filed in: Security Research
In this final blog in the Rootnik series we will finish our analysis of this new variant. Let’s start by looking into the script shell rsh. Analysis of the script shell Through our investigation we are able to see how the script shell works: First, it writes the content of the file .ir into /system/etc/install-recovery.sh. The file install-recovery.sh is a startup script. When the android device is booted, the script can be executed. The following is the content of the file .ir. Next, it writes some files... [Read More]
by RSS Kai Lu  |  Jul 09, 2017  |  Filed in: Security Research
In part I of this blog, I finished the analysis of the native layer of a newly discovered Rootnik malware variant, and got the decrypted real DEX file. Here in part II, we will continue our analysis. A look into the decrypted real DEX file The entry of the decrypted DEX file is the class demo.outerappshell.OuterShellApp. The definition of the class OuterShellApp is shown below. Figure 1. The class demo.outerappshell.OuterShellApp We will first analyze the function attachBaseContext(). The following is the function aBC() in the class... [Read More]
by RSS Kai Lu  |  Jul 09, 2017  |  Filed in: Security Research
Part I: How to Unpack the Malware App This past January I performed a deep analysis of an Android rootnik malware variant and posted them to this blog. Since then, I have continued to monitor this Android malware family. In early June, FortiGuard Labs found a new variant of the Android rootnik malware that disguises itself as a legal app. It then uses open-sourced Android root exploit tools to gain root access on an Android device. To be clear, this malware was NOT found in Google Play. The developer of the malware app repackaged a legal app... [Read More]
by RSS Kai Lu  |  Jul 09, 2017  |  Filed in: Security Research
This blog post is a summary of SSTIC, a major infosec conference held in France. As usual, this year’s conference came with excellent presentations. The sessions have been recorded, and the papers are available on the website, although most of the content is in French. For a detailed wrap-up of SSTIC, please read @xme: Day 1 Day 2 Day 3 SSTIC is one of the few IT conferences which (1) ask authors to submit full papers, (2) from which you return with information or tools to work on, and (3) whose presentations are mostly... [Read More]
by RSS Axelle Apvrille  |  Jul 04, 2017  |  Filed in: Industry Trends
FortiGuard Labs recently captured some malware which was developed with the Microsoft .Net framework. I analyzed one of them, and in this blog, I’m going to show you how it is able to steal information from a victim’s machine. The malware was spread via a Microsoft Word document that contained an auto-executable malicious VBA Macro. Figure 1 below shows how it looks when it’s opened. Figure 1. When the malicious Word document is opened What the VBA code does Once you click the “Enable Content”... [Read More]
by RSS Xiaopeng Zhang  |  Jun 28, 2017  |  Filed in: Security Research
We are currently tracking a new ransomware variant sweeping across the globe known as Petya. It is currently having an impact on a wide range of industries and organizations, including critical infrastructure such as energy, banking, and transportation systems. This is a new generation of ransomware designed to take advantage of timely exploits. This current version is targeting the same vulnerabilities that we exploited during the recent Wannacry attack this past May. This latest attack, known as Petya, is something we are referring to as... [Read More]
by RSS Aamir Lakhani  |  Jun 27, 2017  |  Filed in: Industry Trends, Security Research
Welcome back to our monthly review of some of the most interesting security research publications. This month, let's do a bit of crypto... Past editions: April 2017 March 2017 P. Carru, Attack TrustZone with Rowhammer Rowhammer is an attack on DRAM, which consists in repeatedly accessing given rows of the DRAM to cause random bit flips in adjacent rows. Until now, the attack hadn't been demonstrated on ARM's TrustZone: but that's what the author implemented. He demonstrated that, using... [Read More]
by RSS Axelle Apvrille  |  Jun 22, 2017  |  Filed in: Industry Trends
Summary In December 2016, FortiGuard Labs discovered and reported a WINS Server remote memory corruption vulnerability in Microsoft Windows Server. In June of 2017, Microsoft replied to FortiGuard Labs, saying, "a fix would require a complete overhaul of the code to be considered comprehensive. The functionality provided by WINS was replaced by DNS and Microsoft has advised customers to migrate away from it." That is, Microsoft will not be patching this vulnerability due to the amount of work that would be required. Instead, Microsoft... [Read More]
by RSS Honggang Ren  |  Jun 14, 2017  |  Filed in: Security Research
FortiGuard Labs recently came across a new strain of samples exploiting the CVE-2017-0199 vulnerability. This vulnerability was fixed by Microsoft and the patch was released in April 2017. Due to its simplicity, it can be easily exploited by attackers. It has also been found in-the-wild by other vendors. We have also blogged about some samples recently found in spear phishing attack. While there are plenty of articles discussing this vulnerability, most of them are intended for technical readers and primarily focus on how to create proof-of-concept... [Read More]
by RSS Wayne Chin Yick Low  |  Jun 04, 2017  |  Filed in: Security Research