Posts Tagged: Skype


Spamvertised ‘You received a new message from Skype voicemail service’ themed emails lead to Angler exploit kit

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We’ve just intercepted a currently circulating malicious spam campaign that’s attempting to trick potential botnet victims into thinking that they’ve received a legitimate Voice Message Notification from Skype. In reality though, once socially engineered users click on the malicious link found in the bogus emails, they’re automatically exposed to the client-side exploits served by the Angler exploit kit. More details:

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Hacked Origin, Uplay, Hulu Plus, Netflix, Spotify, Skype, Twitter, Instagram, Tumblr, Freelancer accounts offered for sale

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Aiming to capitalize on the multi-billion gaming market, cybercriminals actively data mine their botnets for accounting credentials, not just for popular gaming platforms, but also the actual activation keys for some of the most popular games on the market. A newly launched e-shop aims to monetize stolen accounting credentials, not just for gaming platforms/popular games such as Origin and Uplay, but also for a variety of online services such as Hulu Plus, Spotify, Skype, Twitter, Instagram, Tumblr and Freelancer. How much does it cost to buy pre-ordered access to Battlefield 4? What about a compromised Netflix or Spotify account? Let’s find out. […]

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DIY Skype ring flooder offered for sale

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Thanks to the ease of generating a botnet, in 2013, stolen accounting data on a mass scale is a no longer a hot underground item, it’s a commodity, one that’s being offered by virtually all participants in the cybercrime ecosystem. What happens once a Skype account gets compromised? There are several possible scenarios. The cybercriminals that (automatically) compromised it will either use the Skype credit for their own purposes, start spreading malware to the friends/colleagues of the compromised victim, or feed the accounting data into their arsenal of tools and tactics for launching TDoS (Telephony Denial of Service) services. In this […]

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Madi/Mahdi/Flashback OS X connected malware spreading through Skype

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Over the past few days, we intercepted a malware campaign that spreads through Skype messages, exclusively coming from malware-infected friends or colleagues. Once users click on the shortened link, they’ll be exposed to a simple file download box, with the cybercriminals behind the campaign directly linking to the malicious executable. More details:

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Bogus Skype ‘Password successfully changed’ notifications lead to malware

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Skype users, beware! Cybercriminals are currently spamvertising millions of emails impersonating Skype, in an attempt to trick Skype users that their password has been successfully changed, and that in order to view their call history and change their account settings, they would need to execute the malicious attachment found in the emails. More details:

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Cybercriminals abuse Skype’s SMS sending feature, release DIY SMS flooders

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Cybercriminals are masters of abusing legitimate infrastructure for their malicious purposes. From phishing sites and Black Hole exploit kit landing URLs hosted on compromised servers, abuse of legitimate web email service providers’ trusted DKIM verified ecosystem, to the systematic release of DIY spamming tools utilizing a publicly obtainable database of user names as potential “touch points”, cybercriminals are on the top of their game. In this post, I’ll profile a recently advertised DIY SMS flooder using Skype’s infrastructure for disseminating the messages, and assess the potential impact it could have on end and corporate users. More details:

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Russian spammers release Skype spamming tool

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Taking advantage of DIY spamming tools and harvested databases of user names, cybercriminals have been systematically abusing multiple instant messaging services in an attempt to trick as many users as possible into interacting with their malicious campaign. In this post, I’ll profile a newly released DIY Skype spamming tool, discuss its main features, and whether or not it can lead to an increase in the overall spam levels affecting Microsoft’s Skype. More details:

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Poison Ivy trojan spreading across Skype

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Last night, a friend of mine surprisingly messaged me at 6:33 AM on Skype, with a message pointing to what appeared to be a photo site with the message “hahahahaha foto” and a link to hxxp://random_subdomain.photalbum.org What was particularly interesting is that he created a group, and was basically sending the same message to all of his contacts. Needless to say, the time has come for me to take a deeper look, and analyze what appeared to be a newly launched malware campaign using Skype as propagation vector. More details:

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