Threat Outbreak Alert: Fake Paychex Insurance Agency Secure File Attachment E-mail Messages on January 16, 2013
IntelliShield: Threat Outbreak Alert
2013 January 16 19:48 GMT
2013 January 16 19:48 GMT
Cisco Security Intelligence Operations has detected significant activity on January 16, 2013.
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain personal information from Paychex Insurance Agency for the recipient. The text in the e-mail message attempts to persuade the recipient to open the attachment to view the secure electronic file. However, the .zip 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 (RuleID5088) may contain the following files:
The pyx_8839187_1_HNB.exe file in the pyx_8839187_1_HNB.zip attachment has a file size of 202,520 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xDC9174B5A8D90040CC1668CA6545D485
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: Paychex Insurance Agency
The security of your personal information is of the utmost importance to Paychex, so we have sent the attached as a secure electronic file.
Note: The attached file contains encrypted data. In order to view the file, you must have already installed the decryption software that was previously provided by Paychex.
If you have any question please call us at 800-472-0072, option 4. Representatives are available to assist you Monday through Thursday between 8:00 a.m. and 8:00 p.m. ET and Friday between 8:00 a.m. and 6:00 p.m. ET.
Paychex Insurance Agency
The information contained in this message may be privileged, confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify your representative immediately and delete this message from your computer. Thank you.
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 systems to protect customers. This report will be updated if there are significant changes or if the risk to end users increases.
Cisco security appliances 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 Web Security Appliances will not be impacted by these attacks. Cisco security 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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