Cisco Security Intelligence Operations has detected significant activity related to Spanish-language spam e-mail messages that claim to contain a Terra greeting card for the recipient. The text in the e-mail message attempts to convince the recipient to follow a link and view the greeting card. However, the link directs the user to a malicious .zip file containing an .exe file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4148) may contain the following files:
The terracardspostales1TTT148005990TTLYDJ.exe file in the terracardspostales1TTT148005990TTLYDJ.zip attachment has a file size of 106,496 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xDF6BE8BD1414ED6D8FF7EB6894B60893
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Han elegido una tarjeta para ti, en Terra
Para verla simplemente haz click aqu?:
Si no puedes ver la tarjeta:
1) Copia el c?digo de la misma: 1TTT148005990TTLYDJ
2) Entra a: hxxp://postales.terra.co/cat/viewcard.aspx
y all? ingresa el c?digo de la tarjeta en el primer casillero en blanco,
luego haz click en el bot?n de "Enviar".
Esperamos que te guste y que visites http://postales.terra.co/ para
enviar tus propias tarjetas electr?nicas.
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.
Cisco Security Intelligence Operations
Cisco Threat Operations Center
Cisco SenderBase Security Network