MacDefender Signature

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L4 Transporter

MacDefender Signature

Has anyone seen a lot of activity around the MacDefender Command and Control Traffic (event ID 13104 and 13108)  spyware threat since the introduction of these signatures? I believe first add of these signatures was 248-993 and then updated in 249-1005.  I am trying to get a handle on the numerous daily "blocked" events we are seeing for these connections.  According to what I know of this malicious behavior - the payload is against the Mac OS only.  However, we have no Macs.  All these events are happening to PCs.  Is it perhaps because a drive-by or web link is bringing our users to the known bad external IPs? Also want to validate that this is indeed a real event and not a false positive - for we are seeing about a dozen of these events a day - never to same internal user.  Curious if anyone is seeing any of this activity and thoughts before I open a case.

Cheers,

Mike

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L5 Sessionator

Re: MacDefender Signature

Hi Mike,

A couple of cases came into Support regarding the MAC Defender but both are waiting on the customer to provide a pcap of the traffic so nothing conclusive yet.  If you can provide a pcap, please go ahead and open a case so that engineering can determine if it is a false positive or not.  Thanks.

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