Cisco Security has detected significant activity related to spam e-mail messages that claim to contain an iTunes gift certificate. The text in the e-mail message instructs the recipient to open the attached .zip file to retrieve and validate the gift certificate code. The .zip file contains a malicious .exe file that, when executed, attempts to infect the targeted system with malicious code.
E-mail messages that are related to this threat (RuleID2743, RuleID2757 and RuleID2782) may contain the following files:
The iTunes_certificate_147.exe file has a file size of 51,200 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x0E50C0085BC6D75226A5C06AC1637DF1
The Gift_Certificate_277.exe file has a file size of 70,144 bytes. The MD5 checksum is the following string: 0xA952A30105D747C4337BEDED87482DF4
The Gift_Certificate_131.exe file has a file size of 34,304 bytes. The MD5 checksum is the following string: 0x75809A70E8773D51C5B20DD0F7B8163E
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: Thank you for buying iTunes Gift Certificate!
You have received an iTunes Gift Certificate in the amount of $50.00
You can find your certificate code in attachment below.
Then you need to open iTunes. Once you verify your account, $50.00 will be credited to your account, so you can start buying music, games, video right away.
The malware associated with this threat outbreak appears to be a trojan that belongs to the Trojan.Sasfis family. This trojan may modify the system registry and attempt to download and install additional malware on the targeted system. Reports indicate that this trojan may attempt to contact the davidopolko.ru host.
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 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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