security research


FortiGuard Labs has been tracking a tax refund phishing scam in Malaysia. Let’s get into the details of how this works. [Read More]
by RSS Nelson Ngu  |  Nov 12, 2017  |  Filed in: Security Research
Recently, we came across some interesting samples in jtd format, which is the file format used by JustSystems Ichitaro. The following is a quick primer for readers who are unfamiliar with the Japanese market. [Read More]
by RSS Minh Tran  |  Nov 09, 2017  |  Filed in: Security Research
Welcome back to our monthly review of some of the most interesting security research publications. [Read More]
by RSS Axelle Apvrille  |  Nov 09, 2017  |  Filed in: Security Research
Welcome back to our monthly review of some of the most interesting security research publications. July was very busy with the annual DEFCON and BlackHat US conferences, but also RMLL, the Worldwide Free Software Meeting held this year in France. Past editions: June 2017 May 2017 April 2017 March 2017 Elie Burzstein et al, How We Created the First SHA-1 collision and what it means for hash security video, DEFCON 25 slides and paper With the nickname "Crypto Girl", I obviously had to listen to this... [Read More]
by RSS Axelle Apvrille  |  Sep 07, 2017  |  Filed in: Security Research
Shamoon Timeline The Shamoon virus, also known as Disttrack, surfaced for the first time back in 2012 targeting Middle East Oil companies. It leveraged stolen credentials to gain access, and then exhibited worm-like behavior to spread throughout the entire targeted network. All Shamoon attacks were clearly very carefully planned beforehand, as the attackers had to gain access to legitimate credentials before launching the attack. While most modern malware are focused on monetizing through any way possible, from bitcoin mining to the current... [Read More]
by RSS Douglas Jose Pereira dos Santos, Artem Semenchenko  |  Dec 07, 2016  |  Filed in: Security Research
There have been numerous cases where advanced malware has been linked to significant data breaches. Malware authors employ a variety of techniques to hide their malicious intent, including the use of packing utilities to create “packed malware.” Ladi Adefala, Senior Security Strategist at Fortinet, explains how a real time sandbox can change the game with regard to defending against these sophisticated attacks. What is Packed Malware? Packed malware is one of the most common types of advanced malware, carefully designed to evade... [Read More]
by RSS Ladi Adefala  |  Dec 07, 2016  |  Filed in: Security Q & A
  One month ago we captured a Word document infected with malicious VBA code, which was detected as WM/Agent!tr by the Fortinet AntiVirus service. Its file name is InternalFax.doc, and its MD5 is 4F2139E3961202B1DFEAE288AED5CB8F.  By our analysis, the Word document was used to download and spread the botnet TrickBot. TrickBot aims at stealing online banking information from browsers when victims are visiting online banks. The targeted banks are from Australia, New Zealand, Germany, United Kingdom, Canada, United States, Israel, and... [Read More]
by RSS Xiaopeng Zhang  |  Dec 06, 2016  |  Filed in: Security Research
  Recently, the San Francisco Municipal Transportation Agency, also known as MUNI, was attacked by a new variant of Mamba (a.k.a HDDCryptor) – a disk-encypting ransomware. The incident left their ticketing services with inoperational systems and a note that read, “You Hacked,ALL Data Encrypted,Contact For Key(cryptom27@yandex.com)” Fortinet first discovered Mamba two months ago. Since then, it has been under the radar – until this big attack. We will now take a look at a few irregularities and some new developments... [Read More]
by RSS Joie Salvio  |  Dec 05, 2016  |  Filed in: Security Research
A High-Severity Heap Buffer Overflow vulnerability was recently fixed in a patch  by Openssl Project.  This vulnerability affects the remote SSL servers that support the ChaCha20-Poly1305 cipher suite, and can be exploited to crash the SSL service. This High-Severity Heap Buffer Overflow vulnerability (CVE-2016-7054) is caused by an error when the ChaCha20-Poly1305 cipher suite is decrypting large amounts of application data. We will examine the root cause of this vulnerability in this post. The ChaCha20-Poly1305 cipher suite is... [Read More]
by RSS Dehui Yin  |  Nov 23, 2016  |  Filed in: Security Research
New variants of android banking malware target even more German banks, popular social media apps, and more Summary In my previous blog I provided a detailed analysis of a new android banking malware that spoofed the mobile applications of several large German banks to trick users into revealing their banking credentials. This week I found several new variants of this growing malware, and in this update I am sharing these new findings. Install the malware One of these variants masquerades as another German mobile banking app. Once installed,... [Read More]
by RSS Kai Lu  |  Nov 18, 2016  |  Filed in: Security Research