Malware Express Delivery

21 Apr

From Symantec

In the past couple of days, Symantec has observed a spike of email attacks that are designed to distribute malicious threats. All of the observed samples are spoofed to appear as if they are legitimate delivery warnings or notifications from UPS or Post Express. The message text asks recipients to open the zipped executable file for further details or actions necessary to take delivery of the item.

Below are the sample headers observed in this spam attack:

From: “United Parcel Service” <info***>
From: “UPS� Customer Services”<***>
From: “United Parcel Service” <***>
From: “Neil Molina” United Parcel Service  <[Details Removed]@ [Details Removed]>
From: “Kimberley Miner” United Parcel Service  <[Details Removed]@ [Details Removed]>

Subject: United Parcel Service notification 40983
Subject: Delivery Status
Subject: UPS: Your Package
Subject: United Parcel Service notification
Subject: United Postal Service Tracking Nr.

From: “Post Express Support” <postmail-int[Details Removed]@[Details Removed]>
From: “Post Express Information” <postmail-usa. [Details Removed]@[Details Removed]>
From: “Post Express Report” <postmail-usa. [Details Removed]@ [Details Removed]>
From: “Post Express Office” <postmail-usa. [Details Removed]@[Details Removed]>
From: “Post Express Information” <postmail-usa. [Details Removed]@[Details Removed]>

Subject: Post Express Office. Package is available for pickup. NR03909
Subject: Post Express Office. Delivery refuse. NR4245855
Subject: Post Express Office. Track your parcel. NR06678
Subject: Post Express Office. Error in the delivery address. NR4061172
Subject: Post Express Office. Get the parcel NR31215

Once the recipient downloads the compressed file, the following threats are installed:

UPS tracking number.exe was detected as Trojan.FakeAV.
UPS notify.exe was detected as Backdoor.Cycbot.
Post_Express_Label.exe was detected as Trojan.Sasfis.

A couple of spam samples are shown below:

Symantec analyzed the attacks further and found that the increase in malicious activity, sent from diverse geographical locations, indicates that spammers are working to rebuild their botnets after the Rustock takedown.

Symantec recommends that users adhere to the basic practice of not opening or downloading any suspicious attachments from emails such as those described above. Also, install all security patches and keep their antivirus definitions up to date to prevent the compromise of personal machines or networks.

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Posted by on April 21, 2011 in Computer Security


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