We recently came across a cyber attack that used a remote access Trojan (RAT) called Lost Door, a tool currently offered on social media sites. What also struck us the most about this RAT (detected as BKDR_LODORAT.A) is how it abuses the Port Forward feature in routers. Using this feature enables remote systems to connect to a specific computer or service within a private local-area network (LAN). However, when used maliciously, this feature allows remote attackers to mask their activities in the network and avoid immediate detection. Because this RAT is easy to customize, even knowledge of the indicators of compromise (which may change as a result) may not be sufficient in thwarting the threat. Easily customizable RATs like Lost Door can be hard to detect and protect against, posing a challenge to IT administrators.Read More
April 2016 was a great month for putting cybercriminals in prison. On April 12 Paunch, the creator of the infamous Blackhole exploit kit, was sentenced to seven years in a Russian prison. This was soon followed by Aleksandr Panin, the creator of SpyEye: he was sentenced by a United States federal court to nine and a half years in prison for his role in creating SpyEye. One of his partners, Hamza Bendelladj, was sentenced to fifteen years.
The most recent case involved Esthost, a company we know very well from our research. Vladimir Tsastsin became the latest member of the Esthost gang to be sentenced to jail; he will spend more than 7 years in prison. He was also ordered to forfeit more than $2.5 million in property.Read More
In the first four months of 2016, we have discovered new families and variants of ransomware, seen their vicious new routines, and witnessed threat actors behind these operations upping the ransomware game to new heights. All these developments further establish crypto-ransomware as a lucrative cybercriminal enterprise. As we predicted, this year is indeed shaping up to be the year of online extortion, and while the security industry may be doing an admirable job of keeping up with the latest new tactic and providing solutions, the not-so informed public and organizations may very well be on the receiving end of a crippling malware that can destroy personal and corporate files, as well as lead to huge financial losses.Read More
In early April of this year a zero-day exploit (designated as CVE-2016-1019) was found in Adobe Flash Player. This particular flaw was soon used by the Magnitude Exploit Kit, which led to an Adobe out-of-cycle patch. This flaw was being used to lead to drive-by download attacks with Locky ransomware as the payload.
However, this did not end the threat for users. We recently saw a new variant of this attack that added an unusual twist. On top of the Flash exploit, an old escalation of privileges exploit in Windows (CVE-2015-1701) was used to bypass sandbox technologies.Read More
In 2014, we began seeing attacks that abused the Windows PowerShell. Back then, it was uncommon for malware to use this particular feature of Windows. However, there are several reasons for an attacker to use this scripting technique.
For one, users cannot easily spot any malicious behavior since PowerShell runs in the background. Another is that PowerShell can be used to steal usernames, passwords, and other system information without an executable file being present. This makes it an attractive tool for attackers for carrying out malicious activities while avoiding easy detection.Read More