Cisco Security has detected significant activity related to spam e-mail messages that claim to contain an account compromise notification for the recipient. The text in the e-mail message attempts to convince the recipient to open the attachment and view the details. 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 (RuleID6063) may contain any of the following files:
file in the cook.zip
attachment has a file size of 147,456 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x73F1980C8B572534B7E34494D9245154
The inf2-3899.exe file in the inf2-3899.zip attachment has a file size of 324,568 bytes. The MD5 checksum is the following string: 0x4CEA269B23C8D28FF40799AF1F9C7BEA
The following text section is a sample of the e-mail message that is associated with this threat outbreak:
Subject: Hello Cook, Jason, your Facebook username has been restricted.
For the past weeks, facebook was hacked so you are asked to download the attached utility. It will enable a trusted connection to our network and your computer will be secure.
We are trying to reach all of our users immediately but we have limited emailing resources. Our site would be thankful if you would mail the attached utility to your friends and family as soon as possible.
Sehr geehrter Auftraggeber,
Die Kopie der Quittung wird als Beilage zugesandt.erfolgreich
Cisco Security 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.
Cisco Threat Operations Center
Cisco SenderBase Security Network