java script


On 6th December 2017, FortiGuard Labs discovered a compromised website - acenespargc[.]com. Looking into the source code, we noticed a suspicious encrypted script which the uses eval() function to convert all the characters into numbers. We used a tool called CharCode Translator to reverse the numbers back into characters. We were then able to retrieve a link which redirects to a scam page or phishing website. Part 1   Part 2 The above is just a simple example. The threat actor can actually... [Read More]
by RSS Eric Chong  |  Feb 07, 2018  |  Filed in: Security Research
Background Last week, FortiGuard Labs captured a JS file that functions as a malware downloader to spread a new variant of the Emotet Trojan. Its original file name is Invoice__779__Apr___25___2017___lang___gb___GB779.js.  A JS file, as you may be aware, is a JavaScript file that can be executed by a Window Script Host (wscript.exe) simply by double-clicking on it. In this blog we will analyze how this new malware works by walking through it step by step in chronological order. A JS file used to spread malware The original JS code... [Read More]
by RSS Xiaopeng Zhang  |  May 03, 2017  |  Filed in: Security Research