Description
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain a credit card transaction notification 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 .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 (RuleID5873) may contain the following files:
04232013.exe
04232013.zip
The 04232013.exe file in the 04232013.zip attachment has a file size of 135,680 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xA6278E4A890D15220FAF8E668ECF6564
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Message Body:
Dear Visa card holder,
A recent review of your transaction history determined that your card was used in possible fraudulent transactions. For security reasons the requested transactions were refused. Please carefully review electronic report for your VISA card.
For more details please see the attached transaction report.
Dwayne_Hampton
Data Protection Officer
VISA EUROPE LIMITED
1 Sheldon Square
London W2 6WH
United Kingdom
CONFIDENTIALITY NOTICE:
This electronic mail transmission and any attached files contain information intended for the exclusive use of the individual or entity to whom it is addressed and may contain information belonging to the sender (Visa Europe Limited.) that is proprietary, privileged, confidential and/or protected from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any viewing, copying, disclosure or distributions of this electronic message are violations of federal law. Please notify the sender, by email or telephone (+44 (0)20 7795 0269), of any unintended recipients and delete the original message without making any copies. Thank You
Source: Cisco Systems