Microsoft Hijacks Necurs Botnet that Infected 9 Million PCs Worldwide

Microsoft today announced that it has successfully disrupted the botnet network of the Necurs malware, which has infected more than 9 million computers globally, and also hijacked the majority of its infrastructure. The latest botnet takedown was the result of a coordinated operation involving...

Pykspa v2 DGA updated to become selective

Additional research and information provided by Asaf Nadler Recent changes to the Pykspa v2 domain generation algorithm DGA have made it more selective. Akamai researchers have tracked these changes and believe that part of the reason for selective domain generation...

ARE YOU LEAVING YOUR SECURITY BACKDOOR OPEN?

Gartner predicts that enterprises will spend $96 Billion on cyber security this year, up 8% from their spend in 2017. That's a big chunk of change. To put it into context, that spend is in the same ballpark as the individual GDPs of Venezuela, Sri Lanka and Puerto Rico in 2018. Despite this,...

Ad Network Circumvents Ad-Blocking Tools To Run In-Browser Cryptojacker Scripts

Cryptojackers are getting resourceful and have figured out how to bypass ad-blocking software and deliver the Coinhive JavaScript miner via browser-based ads. Researchers at Qihoo’s Netlab 360 said it recently spotted an advertising network that was using what is called a domain generation...

A Death Match of Domain Generation Algorithms

By Hongliang Liu and Yuriy Yuzifovich Originally posted on December 29, 2017 Today's post is all about DGA's Domain Generation Algorithms: what they are, why they came into existence, what are some use cases where they are used, and, most importantly - how to detect and block them. As we will...

DGA-Detection - DGA Domain Detection using Bigram Frequency Analysis

More and more malware is being created with advanced blocking circumvention techniques. One of the most prevalent techniques being used is the use of Domain Generation Algorithms which periodically generates a set of Domains to contact a C&C server. The majority of these DGA domains generate rand...

Backdoor in the nssock2.dll module of several products including NetSarang Xmanager and Xshell

NetSarang is a company that provides secure link solutions and Xshell is a terminal emulation software. The related nssock2.dll module, a component used for network communication, in the installation directories of Xshell, Xlpd, Xmanager, and Xftp has been found to contain backdoor-type code samp...

VulnCheck KEV: CVE-2017-20202

Web Developer for Chrome v0.4.9 contained malicious code that generated a domain via a DGA and fetched a remote script. The fetched script conditionally loaded follow-on modules that performed extensive ad substitution and malvertising, displayed fake “repair” alerts that redirected users to...

Spotlight on Malware DGA Communication Technique

Written by Avi Aminov and Or Katz Overview Imagine you are standing in the middle of a crowded train station and want to have a private conversation with an old friend. You've been waiting for the perfect time to contact him and get some advice on how to move forward with some important life...

Tinba Variant Spotted Targeting Russian, Japanese Banks

Cybercriminals behind the Tinba banking Trojan have been homing in on some of the larger banks in Russia and Japan, experts claim. According to researchers with Dell SecureWorks, who looked at an instance of the malware last month, configuration files in one variant are targeting one of the...

CoreBot Credential-Stealing Malware

A new piece of data-stealing malware has a real thirst for credentials—and the potential for worse trouble down the line. IBM today published a report on CoreBot, generic information-stealing malware designed with enough flexibility to soon ramp up its capabilities to exfiltrate data in real time...

Updated DGA Changer Malware Generates Fake Domain Stream

LAS VEGAS — The group behind the DGA Changer downloader has been pretty adept in modifying the malware to elude sandbox detection in particular. Researchers at Seculert today published a report on the latest twist to DGA Changer, which now is able to generate a fake stream of domains if it detect...

Matsnu Botnet DGA Builds Domains From List of Nouns, Verbs

Domain generation algorithms have been botmasters’ favorite tool for keeping malware up and running—and for frustrating security researchers and detection technologies. Like malware, DGAs evolve, thus complicating an already tricky cat-and-mouse game between criminals and white hats. The latest i...

Rovnix Variant Surfaces With New DGA

Researchers have unearthed a new version of the Rovnix malware that has a couple of additional features, including a new domain generation algorithm and a secure transmission channel for communicating with the command-and-control servers. Rovnix is a malware variant that often has been distribute...

NewGOZ Gameover Zeus Botnet Rebuilds

It didn’t take long for an updated version of GameOver Zeus to make some headway in rebuilding itself. Research published today from Arbor Networks demonstrates that cybercriminals behind GameOver Zeus, which was taken down by law enforcement in early June, have renewed the botnet with at least...

New GameOver Zeus Botnet Malware Variant Surfaces

The GameOver Zeus takedown was trumpeted as a victory against cybercrime, and for all its success, even those involved understood it was likely a temporary win. Researchers at Seculert have spotted a new variant of GameOver Zeus that has spurned previous versions’ peer-to-peer communication...

New Pushdo Malware Hacks 11,000 Computers in Just 24 Hours

One of the oldest active malware families, Pushdo, is again making its way onto the Internet and has recently infected more than 11,000 computers in just 24 hours. Pushdo, a multipurpose Trojan, is primarily known for delivering financial malware such as ZeuS and SpyEye onto infected computers or...

Possible New Version of GameOver Zeus Malware Emerges

It’s only been a little more than a month since the FBI and Europol took down the GameOver Zeus botnet, taking control of its command-and-control infrastructure and effectively cutting off the malware’s head. But researchers say that there are some indications that a new strain of the malware may...

DGA Changer Malware Able to Modify Domain-Generation Seed on the Fly

Malware authors have been using domain-generation algorithms for a few years now, often in botnet-related malware that needs to stay one step ahead of takedown attempts and law enforcement agencies. Now, researchers have discovered that a strain of malware that may have been part of the attack in...

US-CERT Warns of More CryptoLocker Ransomware Infections

CryptoLocker is a devious evolution of now-familiar ransomware schemes in which the malware encrypts files it finds on a number of network resources and demands a ransom for the decryption key. US-CERT issued an advisory today warning businesses and consumers of the risks presented by CryptoLocke...