Posts Categorized: mal-effects


Mass iframe injection campaign leads to Adobe Flash exploits

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We’ve intercepted an ongoing malicious campaign, relying on injected/embedded iFrames at Web sites acting as intermediaries for a successful client-side exploits to take place. Let’s dissect the campaign, expose the malicious domains portfolio/infrastructure it relies on, as well as directly connect it with historical malicious activity, in this particular case, a social engineering campaign pushing fake browser updates.

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Malicious ‘FW: File’ themed emails lead to malware

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Think someone forwarded you an important attachment? Think twice. Cybercriminals are currently mass mailing tens of thousands of malicious emails attempting to trick the recipient into thinking that someone has forwarded a file to them. In reality, once socially engineered users execute the malicious attachments, their PCs automatically become part of the botnet operated by the cybercriminals behind the campaign, allowing them to gain complete control over the affected PCs, and consequently abuse the access for related fraudulent purposes.

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Spamvertised T-Mobile ‘Picture ID Type:MMS” themed emails lead to malware

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The cybercriminals behind last week’s profiled fake T-Mobile themed email campaign have resumed operations, and have just spamvertised another round of tens of thousands of malicious emails impersonating the company, in order to trick its customers into executing the malicious attachment, which in this case is once again supposedly a legitimate MMS notification message.

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Novice cyberciminals offer commercial access to five mini botnets

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With the increased public availability of leaked/cracked DIY malware/botnet generating tools, cybercriminals continue practically generating new botnets on the fly, in order to monetize the process by offering access to these very same botnets at a later stage in the botnet generation process. In addition to monetizing the actual process of setting up and hosting the botnet’s C&C (command and control) servers, novice cybercriminals continue selling direct access to their newly generated botnets, empowering other novice cybercriminals with the foundations for further disseminating and later on monetizing other pieces of malicious software, part of their own arsenal of fraudulent/malicious tools. […]

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Compromised Turkish Government Web site leads to malware

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Our sensors just picked up an interesting Web site infection, this time affecting a Web server belonging to the Turkish government, where the cybercriminals behind the campaign have uploaded a malware-serving fake ‘DivX plug-in Required!” Facebook-themed Web page. Once socially engineered users execute the malware variant, their PCs automatically join the botnet operated by the cybercriminals behind the campaign.

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Fake ‘You have missed emails’ GMail themed emails lead to pharmaceutical scams

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Pharmaceutical scammers are currently mass mailing tens of thousands of fake emails, impersonating Google’s GMail in an attempt to trick its users into clicking on the links found in the spamvertised emails. Once users click on them, they’re automatically exposed to counterfeit pharmaceutical items, with the scammers behind the campaign attempting to capitalize on the ‘impulsive purchase’ type of social engineering tactic typical for this kind of campaign.

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‘T-Mobile MMS message has arrived’ themed emails lead to malware

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A circulating malicious spam campaign attempts to trick T-Mobile customers into thinking that they’ve received a password-protected MMS. However, once gullible and socially engineered users execute the malicious attachment, they automatically compromise the confidentiality and integrity of their PCs, allowing the cybercriminals behind the campaign to gain complete control of their PCs.

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ThreatVlog Episode 7: Phishing schemes are on the rise

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In this edition of the Webroot ThreatVlog, Grayson Milbourne talks about the rise of digital phisihing schemes on the internet and how they affect the victims. He then unveils a brand new product from Webroot that is designed to keep users protected from websites that are malicious in nature that could be trying to capture credit card and other personal information.

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Newly launched ‘HTTP-based botnet setup as a service’ empowers novice cybercriminals with bulletproof hosting capabilities – part two

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The emergence and sophistication of DIY botnet generating tools has lowered the entry barriers into the world of cybercrime. With ever-increasing professionalism and QA (Quality Assurance) applied by cybercriminals, in combination with  bulletproof cybercrime-friendly hosting providers, these tactics represent key success factors for an increased life cycle of any given fraudulent/malicious campaign. Throughout the years, we’ve witnessed the adoption of multiple bulletproof hosting infrastructure techniques for increasing the life cycle of campaigns,with a clear trend towards diversification, rotation or C&C communication techniques, and most importantly, the clear presence of a KISS (Keep It Simple Stupid) type of pragmatic mentality; especially in […]

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ThreatVlog Episode 6: FBI Ransomware forcing child porn on infected computers

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In this episode of the ThreatVlog, Marcus Moreno discusses a new, very malicious form of FBI Ransomware that forces the users of infected machines to look at illegal imagery, taking the scare tactics to the next level. He also discusses a new Javascript hack that takes over your browser temporarily, attempting to get people to pay for it to be unlocked.

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