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Posts Tagged ‘smtp servers’

This is a loose sequel to the Cutwail botnet analysis blogpost published on the malwaremustdie.blogspot.com. In this blogpost I will primarily focus on the downloaded PE executable itself (SHA256: 5F8FCC9C56BF959041B28E97BFB5DB9659B20A6E6076CFBA8CB2D591184C9164) and the network traffic that it generates. I will also reveal a hidden C&C server.But first let’s quickly go through the things it does at […]

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22
May
2013

Grum, one of the largest spamming botnets, suspected to be responsible for over 17% of worldwide spam (as described here), which was “killed” in July 2012, still lives.  We have been tracking its activity since January 2013.  We can confirm spiderlab’s doubts about the grum killing published in March 2013. The following article provides some details […]

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We wrote a couple of times already about spams pretending to come from LinkedIn which advertise online pharmacy websites. There is a new spam campaign which changed a bit the way the messages are presented to the users. Now the emails pretend to come from “LinkedIn Co. Technical Support”, “LinkedIn Co. Administration” and from “LinkedIn […]

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