Threat Outbreak Alert: Fake Microsoft Security Update E-mail Messages on August 17, 2012
Threat Type:
IntelliShield: Threat Outbreak Alert
IntelliShield ID:
26673
Version:
1
First Published:
2012 August 17 15:25 GMT
Last Published:
2012 August 17 15:25 GMT
Port:
Not Available
Urgency:
Possible Use
Credibility:
Confirmed
Severity:
Harrassment
Version Summary:
Cisco Security Intelligence Operations has detected significant activity on August 17, 2012.
Description
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain a Security Update for the recipient. The text in the e-mail message attempts to persuade the recipient to open the attachment and view the details. 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 (RuleID4461KVR) may contain the following file: KB2690533.exe
The KB2690533.exe file in the attachment has a file size of 16,898 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x1782ECC4911DFF3CA2854B4B3957127E
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: Security Update
Message Body: Dear,
Because of the office network interfaces changed.Please download the Security Update fot windows XP (KB2690533),and install it.
Download address: hxxp://www.microsoft.com/en-us/download/KB2690533.exe
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.
The security vulnerability applies to the following combinations of products.
Primary Products:
IntelliShield
Threat Outbreak Alert
Original Release Base
Associated Products:
N/A
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LEGAL DISCLAIMER The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
