Cisco Security has detected significant activity related to spam email messages that claim to contain a company complaint notification for the recipient. The text in the email message attempts to convince the recipient to open the attachment for more details on the case. However, the .zip
attachment contains a malicious .scr
file that, when executed, attempts to infect the system with malicious code.
Email messages that are related to this threat (RuleID8701) may contain the following files:
file in the Case_3186342.zip
attachment has a file size of 19,968 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x0D5E6B3FB19F7450F24A696D0F874D66
The following text is a sample of the email message that is associated with this threat outbreak:
Subject: FW: Case 3186342
This message has been generated in response to the company complaint submitted to Companies House WebFiling service.
(CC01) Case for the above company was accepted on 31/01/2014.
The submission number is 3186342
Please check attached file for more details on this case.
Please quote this number in any communications with Companies House.
All WebFiled documents are available to view. However it is not possible to view copies of accounts that were downloaded as templates.
Not yet filing your accounts online? See how easy it is...
Note: reference to company may also include Limited Liability Partnership(s).
Thank you for using the Companies House WebFiling service.
Note: This email was sent from a notification-only email address which cannot accept incoming email. Please do not reply directly to this message.
Cisco Security analysts examine real-world email 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 email 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. Email 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 email and hostile web URLs from being passed to the end user.
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