Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain a DHL Online shipping advisory notification for the recipient. The text in the e-mail message attempts to convince the recipient to open the attachment and view an additional message. However, the attachment contains a malicious .exe file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4326) may contain the following file:
DHL_DELIVERY_ADDITIONAL_MESSAGE_FROM_SHIPPER-AWB364745323.exe
The DHL_DELIVERY_ADDITIONAL_MESSAGE_FROM_SHIPPER-AWB364745323.exe file has a file size of 215,552 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x3428B4063F48DDA954FBD8B5C6D0733B
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: DHL ONLINE SHIPPING PREALERT ADVISORY, Thu, 5 Jul 2012 17:24:53 +0530
Message Body:
DHL WORLDWIDE EXPRESS
INBOUND SHIPMENT ADVISORY
The following 1piece(s) have been sent via DHL Worldwide Express on Thu, 5 Jul 2012 17:24:53 +0530
via AWB# 359241546
If you wish to track this(these) shipment(s) please contact your local
DHL customer service office or visit the DHL Web Site at
http://www.dhl.co.uk
If you have a Web-enabled mail reader, click the link below to view shipment tracking
details:
http://www.dhl.co.uk/content/gb/en/express/tracking.shtml?brand=DHL&AWB=007072857
SHIPMENT CONTENTS:
Documents
SHIPPER REFERENCE: PLEASE REFER TO ATTACHED FILE
ADDITIONAL MESSAGE FROM SHIPPER: PLEASE REFER TO ATTACHED FILE
Thank you for requesting DHL Worldwide Express for your delivery needs
Cisco Security Intelligence Operations analysts examine real-world e-mail traffic data that is collected from over 100,000 contributing organizations worldwide. This data helps provide a range of information about and analysis of global e-mail security threats and trends. Cisco will continue to monitor this threat and automatically adapt IronPort systems to protect customers. This report will be updated if there are significant changes or if the risk to end users increases.
Cisco IronPort Virus Outbreak Filters protect customers during the critical period between the first exploit of a virus outbreak and the release of vendor antivirus signatures. E-mail that is managed by Cisco and end users who are protected by Cisco IronPort web security appliances will not be impacted by these attacks. Cisco IronPort appliances are automatically updated to prevent both spam e-mail and hostile web URLs from being passed to the end user.
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