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Trailrunner7 quotes a report from On the Wire: Malware gangs, like sad wedding bands bands, love to play the hits. And one of the hits they keep running back over and over is the Zeus banking Trojan, which has been in use for many years in a number of different forms. Researchers have unearthed a new piece of malware called Floki Bot that is based on the venerable Zeus source code and is being used to infect point-of-sale systems, among other targets. Flashpoint conducted the analysis of Floki Bot with Cisco's Talos research team, and the two organizations said that the author behind the bot maintains a presence on a number of different underground forums, some of which are in Russian or other non-native languages for him. Kremez said that attackers sometimes will participate in foreign language forums as a way to expand their knowledge. Along with its PoS infection capability, Floki Bot also has a feature that allows it to use the Tor network to communicate. "During our analysis of Floki Bot, Talos identified modifications that had been made to the dropper mechanism present in the leaked Zeus source code in an attempt to make Floki Bot more difficult to detect. Talos also observed the introduction of new code that allows Floki Bot to make use of the Tor network. However, this functionality does not appear to be active for the time being," Cisco's Talos team said in its analysis.

Long-time Slashdot reader coondoggie quotes Network World: Spam is back in a big way -- levels that have not been seen since 2010 in fact. That's according to a blog post from Cisco Talos that stated the main culprit of the increase is largely the handiwork of the Necurs botnet... "Many of the host IPs sending Necurs' spam have been infected for more than two years.

"To help keep the full scope of the botnet hidden, Necurs will only send spam from a subset of its minions... This greatly complicates the job of security personnel who respond to spam attacks, because while they may believe the offending host was subsequently found and cleaned up, the reality is that the miscreants behind Necurs are just biding their time, and suddenly the spam starts all over again."
Before this year, the SpamCop Block List was under 200,000 IP addresses, but surged to over 450,000 addresses by the end of August. Interestingly, Proofpoint reported that between June and July, Donald Trump's name appeared in 169 times more spam emails than Hillary Clinton's.

itwbennett writes: "Seventeen high-risk vulnerabilities out of the 276 flaws fixed by Oracle Tuesday affect products from third-party software vendors," writes Lucian Constantin on CSOonline. The vulnerabilities, which were found by researchers from Cisco's Talos team, are in the Oracle Outside In Technology (OIT), a collection of SDKs that are used in third-party products, including Microsoft Exchange, Novell Groupwise, IBM WebSphere Portal, Google Search Appliance, Avira AntiVir for Exchange, Raytheon SureView, Guidance Encase and Veritas Enterprise Vault.

"It's not clear how many of those products are also affected by the newly patched seventeen flaws, because some of them might not use all of the vulnerable SDKs or might include other limiting factors," writes Constantin. But the Cisco researchers confirmed that Microsoft Exchange servers (version 2013 and earlier) are affected if they have WebReady Document Viewing enabled. In a blog post the researchers describe how an attacker could exploit these vulnerabilities.
TL;DR version: "Attackers can exploit the flaws to execute rogue code on systems by sending specifically crafted content to applications using the vulnerable OIT SDKs."

An anonymous reader writes: Ranscam, a ransom malware reported by Cisco's Talos Security Intelligence group, claims to have encrypted victims' files and hold them for ransom, but in actuality it has already deleted those files and is simply trying to trick its victims into paying to recover files that are no longer there anymore. SlashGear reports: "Most ransomware follow a similar tactic once they get control of a computer or mobile device. They encrypt certain files, personal documents are a favorite, and then display a message instructing the user to pay, usually with bitcoins, to receive the decryption key to save their files. Ranscam, however, is completely without honor, as much honor as you can find among thieves and scam artists. It claims to have encrypted the users' files and then makes the usual demand. However, it adds an additional threat. For each time the user clicks on the 'payment sent' button but no payment was received, it threatens it will delete a file. That, however, is a total farce. In truth, files have already been deleted, so whether the victim pays or not is moot. The perpetrators don't have any way to recover those deleted files anyway. Also, the threats it flashes users are simply static images fetched from a remote server. Users might just as well be clicking on a two-slide presentation. The good news is that reported Ranscam infections are small, according to Cisco's Talos Security Intelligence group."

Reader itwbennett writes: Researchers from Cisco Systems' Talos group have found three memory corruption errors in the widely used open-source library libarchive that can result in arbitrary code execution and can be exploited by passing specially crafted files to applications that contain the vulnerable code. "The library is used by file and package managers included in many Linux and BSD systems, as well as by components and tools in OS X and Chrome OS," writes Lucian Constantin. "Developers can also include the library's code in their own projects, so it's hard to know how many other applications or firmware packages contain it." (Original blog post) So, while the libarchive maintainers have released patches for the flaws, it will likely take a long time for them to trickle down through all the affected projects.

An anonymous reader quotes an article from Softpedia: Google has recently patched a high severity security bug in the Chrome browser that allowed crooks to send malicious code to your browser and take over your entire system... Cisco's Aleksandar Nikolic was the researcher that discovered and reported the issue to Google, who even awarded him $3,000 for his efforts.
Chrome's built-in PDF reader PDFium used an OpenJPEG library to parse JPEG2000 files, and in Chrome it was lacking a crucial heap overflow check, according to a post on the Talos security blog. "By simply viewing a PDF document that includes an embedded jpeg2000 image, the attacker can achieve arbitrary code execution on the victim's system."

An anonymous reader cites an article on Ars Technica: More than 3 million Internet-accessible servers are at risk of being infected with crypto ransomware because they're running vulnerable software, including out-of-date versions of Red Hat's JBoss enterprise application, researchers from Cisco Systems said Friday. About 2,100 of those servers have already been compromised by webshells that give attackers persistent control over the machines, making it possible for them to be infected at any time, the Cisco researchers reported in a blog post. The compromised servers are connected to about 1,600 different IP addresses belonging to schools, governments, aviation companies, and other types of organizations. Some of the compromised servers belonged to school districts that were running the Destiny management system that many school libraries use to keep track of books and other assets. Cisco representatives notified officials at Destiny developer Follett Learning of the compromise, and the Follett officials said they fixed a security vulnerability in the program. Follett also told Cisco the updated Destiny software also scans computers for signs of infection and removes any identified backdoors.

An anonymous reader writes: Cisco's Talos research team has managed to identify and partially shut down a cyber-criminal group that is using the RIG exploit kit to infect users with spambots via a malvertising campaign. Their investigation led them back to Russian ISP Eurobyte, who didn't bother answering critical emails and allowed the campaign to go on even today. In October 2015, Cisco's researchers also thwarted the activity of another group of cyber-criminals that made around $30 million from distributing ransomware.

An anonymous reader writes: Researchers at a Cisco security unit have successfully interrupted the spread of a massive international exploit kit which is commonly used in ransomware attacks. The scientists discovered that around 50% of computers infected with Angler were connecting with servers based at a Dallas facility, owned by provider Limestone Networks. Once informed, Limestone cut the servers from its network and handed over the data to the researchers who were able to recover Angler authentication protocols, information needed to disrupt future diffusion.