Tag Archives: function-maybe

Surprisingly stealthy botnet has been targeting users for years

ESET researchers have unearthed a botnet of some 500,000 infected machines engaged mostly in ad-related fraud by using malicious Chrome extensions, but also Facebook fraud and brute-forcing Joomla and WordPress websites. In addition to this, the compromised machines are also equipped with a fully featured backdoor, which allows the operators to spy on all the victims, and to download additional malware on the computers. A long-standing operation There are many unusual things about the so-called … More ?

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Surprisingly stealthy botnet has been targeting users for years

There’s now a WannaCry decryptor tool for most Windows versions

As the criminals behind the WannaCry ransomware are trying to make it work again, security researchers have created tools for decrypting files encrypted by it. DDoS attacks against the killswitch domains Since researcher Marcus Hutchins (aka MalwareTech) registered a (previously non-existent) killswitch domain for the malware and stopped its onslaught, the domain has been under attack by Mirai-powered botnets. Today’s Sinkhole DDoS Attack pic.twitter.com/wxT2YUrdOF — MalwareTech (@MalwareTechBlog) May 18, 2017 That particular domain has been … More ?

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There’s now a WannaCry decryptor tool for most Windows versions

Bondnet botnet goes after vulnerable Windows servers

A botnet consisting of some 2,000 compromised servers has been mining cryptocurrency for its master for several months now, “earning” him around $1,000 per day. GuardiCore researchers first spotted it in December 2016, and have been mapping it out and following its evolution since then. The’ve dubbed it Bondnet, after the handle its herder uses online (“Bond007.01”). Compromised Windows servers serve different functions Bondnet’s main reason of being is the mining of cryptocurrencies: primarily Monero, … More ?

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Bondnet botnet goes after vulnerable Windows servers

Locky ransomware makes a comeback, courtesy of Necurs botnet

The Necurs botnet has, once again, begun pushing Locky ransomware on unsuspecting victims. The botnet, which flip-flops from sending penny stock pump-and-dump emails to booby-trapped files that lead to malware (usually Locky or Dridex), has been spotted slinging thousand upon thousand of emails in the last three or four days. “Talos has seen in excess of 35K emails in the last several hours associated with this newest wave of Locky,” Cisco Talos researchers noted on … More ?

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Locky ransomware makes a comeback, courtesy of Necurs botnet

Alleged Kelihos botmaster indicted

36-year-old Pyotr Levashov was charged on Friday in the US with one count of causing intentional damage to a protected computer, one count of conspiracy, one count of accessing protected computers in furtherance of fraud, one count of wire fraud, one count of threatening to damage a protected computer, two counts of fraud in connection with email and one count of aggravated identity theft. Levashov stands accused of controlling and operating the Kelihos botnet to, … More ?

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Alleged Kelihos botmaster indicted

Video: TinyNuke botnet explained

In the videos below, McAfee Labs show the setup requirements for installing and deploying TinyNuke. They review the available features of TinyNuke through the control panel, deploy a bot a client machine, and perform attacks against a client.

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Video: TinyNuke botnet explained

How the Necurs botnet influences the stock market

After a three-months-long partial hiatus, the Necurs botnet is back to flinging spam emails left and right. But unlike before the break, when it was mostly delivering the infamous Locky ransomware or the Dridex banking Trojan, the botnet is now engaged in distributing emails with no malicious attachment or link. According to Cisco Talost researchers, the botnet has been spotted firing off short-lasting but sizeable bursts of penny stock pump-and-dump emails. Necurs botnet’s latest campaign … More ?

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How the Necurs botnet influences the stock market

185,000+ vulnerable Wi-Fi cameras just waiting to be hijacked

A generic wireless camera manufactured by a Chinese company and sold around the world under different names and brands can be easily hijacked and/or roped into a botnet. The flaw that allows this to happen is found in a custom version of GoAhead, a lightweight embedded web server that has been fitted into the devices. This and other vulnerabilities have been found by security researcher Pierre Kim, who tested one of the branded cameras – … More ?

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185,000+ vulnerable Wi-Fi cameras just waiting to be hijacked

The power of Big Data for security, operations and DDoS protection

DDoS atacks are costly to your reputation and your bottom line. In this podcast recorded at RSA Conference 2017, Avi Freedman, CEO at Kentik, discusses how to recognize attacks quickly and accurately, then shut them down with situation-appropriate mitigation. Here’s a transcript of the podcast for your convenience. I’m Avi Freedman, CEO of a startup called Kentik Technologies, I’m here today, on this podcast, to talk about the power of Big Data for security, operations, … More ?

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The power of Big Data for security, operations and DDoS protection

Advanced Windows botnet spreads Mirai malware

Kaspersky Lab experts are analyzing the first Windows-based spreader for the Mirai malware as part of a concerted effort to close down Mirai botnets in the wild. The Windows bot appears to have been created by a developer with more advanced skills than the attackers who unleashed the massive Mirai-powered DDoS attacks in late 2016, a fact that has worrying implications for the future use and targets of Mirai-based attacks. The malware author is likely … More ?