Posts Categorized: Botnet activity


Cybercriminals resume spamvertising Citibank ‘Merchant Billing Statement’ themed emails, serve malware

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Over the past week, the cybercriminals behind the recently profiled ‘Citibank Merchant Billing Statement‘ themed campaign, resumed operations, and launched yet another massive spam campaign impersonating Citibank, in an attempt to trick its customers into executing the malicious attachment found in the fake emails. More details:

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Compromised Indian government Web site leads to Black Hole Exploit Kit

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By Dancho Danchev Our sensors recently picked up a Web site infection, affecting the Web site of the Ministry of Micro And Medium Enterprises (MSME DI Jaipur). And although the Black Hole Exploit Kit serving URL is currently not accepting any connections, it’s known to have been used in previous client-side exploit serving campaigns. Let’s profile the campaign, list the malicious URLs, associate them with previously launched malicious campaigns, and provide actual MD5s for historical OSINT preservation/attribution purposes. More details:

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Fake ‘Export License/Payment Invoice’ themed emails lead to malware

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By Dancho Danchev We have just intercepted yet another currently ongoing malicious spam campaign, enticing users into executing a fake Export License/Payment Invoice. Once gullible and socially engineering users do so, their PCs automatically join the botnet operated by the cybercriminals. More details:

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Newly launched ‘Magic Malware’ spam campaign relies on bogus ‘New MMS’ messages

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By Dancho Danchev The gang of cybercriminals behind the ‘Magic Malware‘ has launched yet another malicious spam campaign, attempting to trick U.K users into thinking they’ve received a notification for a “New MMS” message. In reality, once users execute the malicious attachment, it will download and drop additional malware on the affected hosts, giving the cybercriminals behind the campaign complete access to the affected host. More details:

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New subscription-based ‘stealth Bitcoin miner’ spotted in the wild

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By Dancho Danchev Bitcoin, the digital peer-to-peer based currency, is an attractive target for cybercriminals, who persistently look for new monetization tactics to apply to their massive, but easily generated botnets. Not surprisingly, thanks to the buzz surrounding it, fraudulent Internet actors have begun to look for efficient ways to take advantage of the momentum. A logical question emerges – how are market oriented cybercriminals capitalizing on the digital currency? Instead of having to personally infect tens of thousands of hosts, some take advantage of basic pricing schemes such subscription-based pricing, and have others do all the infecting, with them securing a […]

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Cybercriminals impersonate New York State’s Department of Motor Vehicles (DMV), serve malware

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By Dancho Danchev Cybercriminals are currently spamvertising tens of thousands of bogus emails impersonating New York State’s Department of Motor Vehicles (DMV) in an attempt to trick users into thinking they’ve received an uniform traffic ticket, that they should open, print and send to their town’s court. In reality, once users open and execute the malicious attachment, their PCs will automatically join the botnet operated by the cybercriminal/cybercriminals behind the campaign. More details:

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Fake Amazon ‘Your Kindle E-Book Order’ themed emails circulating in the wild, lead to client-side exploits and malware

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By Dancho Danchev Kindle users, watch what you click on! Cybercriminals are currently mass mailing tens of thousands of fake Amazon “You Kindle E-Book Order” themed emails in an attempt to trick Kindle users into clicking on the malicious links found in these messages. Once they do so, they’ll be automatically exposed to the client-side exploits served by the Black Hole Exploit Kit, ultimately joining the botnet operated by the cybercriminal/cybercriminals that launched the campaign. More details:

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Citibank ‘Merchant Billing Statement’ themed emails lead to malware

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Over the past 24 hours, we’ve intercepted yet another spam campaign impersonating Citibank in an attempt to socially engineer Citibank customers into thinking that they’ve received a Merchant Billing Statement. Once users execute the malicious attachment found in the fake emails, their PCs automatically join the botnet operated by the cybercriminal/cybercriminals. More details:

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New IRC/HTTP based DDoS bot wipes out competing malware

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Everyday, new vendors offering malicious software enter the underground marketplace. And although many will fail to differentiate their underground market proposition in market crowded with reputable, trusted and verified sellers, others will quickly build their reputation on the basis of their “innovative” work, potentially stealing some market share and becoming rich by offering the tools necessary to facilitate cybercrime. Publicly announced in late 2012, the IRC/HTTP based DDoS bot that I’ll profile in this post has been under constant development. From its initial IRC-based version, the bot has evolved into a HTTP-based one, supporting 10 different DDoS attack techniques as well as possessing a […]

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FedWire ‘Your Wire Transfer’ themed emails lead to malware

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Over the last day, cybercriminals have launched yet another massive email campaign to impersonate FedWire in an attempt to trick users into thinking that their wire transfer was processed incorrectly. Once they execute the malicious attachment, their PCs automatically become part of the botnet operated by the cybercriminal/gang of cybercriminals. More details:

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