Threat Outbreak Alert RuleID15243: Email Messages Distributing Malicious Software on May 13, 2015


Medium Alert ID: 38799 First Published: 2015 May 13 13:09 GMT Last Updated: 2015 May 14 13:20 GMT Version: 2 ## ![](http://www.cisco.com/c/dam/en_us/about/security/images/csc_child_pages/update-icon-alert.svg) Summary * Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat (RuleID15243 and RuleID15243KVR) may contain the following files: **Name** | **Size in Bytes** | **MD5 Checksum** ---|---|--- nuxF3TKov8gQ.zip / contract_erwer2rdfvcsdva_34fwf.exe | 33,280 | 0x44C9BF779D131FE2D88766CC39AB06A7 eW8CRrqO5LuB.zip / invoice_ghrt6h65h_fwefw3.exe | 38,912 | 0xE249D367F48C9D0F823E12138BB71A41 The following text is a sample of the email message that is associated with this threat outbreak: > Subject: **CITY OF PORT Arthur - STORM SEWER Project** Message Body: **Please see attachment for contract. Please sign and return. Thanks Fred Stepp - Office Manager ** Or > Subject: **INVOICE No. 517-01 FOR WORK AT CRYSTAL BEACH ** Message Body: **in the attachment** Cisco security appliances can help protect customers during the critical period between the first exploit of a virus outbreak and the release of vendor antivirus signatures. Cisco Web Security Appliances help secure and control web and email traffic by offering layers of malware protection. Cisco security appliances are automatically updated to help prevent both spam email and hostile web URLs from being passed to the end user. **Related Links** [Cisco Security](<http://www.cisco.com/security>) [Cisco SenderBase Security Network](<http://www.senderbase.org/>) ## Revision History * Version | Description | Section | Date ---|---|---|--- 2 | Cisco Security has detected significant activity on May 13, 2015. | | 2015-May-14 13:20 GMT 1 | Cisco Security has detected significant activity on May 12, 2015. | | 2015-May-13 13:09 GMT Show Less * * * ## Legal Disclaimer * THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products