Threat Outbreak Alert: Fake Import Assistant E-mail Messages on August 2, 2012
Threat Type:
IntelliShield: Threat Outbreak Alert
IntelliShield ID:
26076
Version:
6
First Published:
2012 June 05 19:56 GMT
Last Published:
2012 August 02 19:52 GMT
Port:
Not Available
Urgency:
Possible Use
Credibility:
Confirmed
Severity:
Mild Damage
Version Summary:
Cisco Security Intelligence Operations has detected significant activity on August 2, 2012.
Description
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain an import assistant program for the recipient. The e-mail message attempts to convince the recipient to open a .zip attachment to preview the data to be imported. However, the .zip attachment contains a malicious .cmd file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4218, RuleID4218KVR, and RuleID4349KVR) may contain an of the following files:
The Fatura cartao.cmd file in the Fatura_Cartao.txt.zip attachment has a file size of 24,576 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x70B0BAA64CA16B8EF7F3BED6E4FD6E7C
The Fatura-Cartao.cmd file in the Fatura-Boleto.zip attachment has a file size of 73,728 bytes. The MD5 checksum is the following string: 0x5740E516E8B58D7CE4B8E65A98C591DE
The Fatura.cmd file in the Fatura.zip attachment has a file size of 151,552 bytes. The MD5 checksum is the following string: 0xD78951E7C4B5A009B59155A6E58C7FE3
The Fatura.exe file in the Fatura.zip attachment has a file size of 20,480 bytes. The MD5 checksum is the following string: 0xCC88806B9E5651F1DBCAFBBEDD17ECCE
The Fatura.cmd file in the Fatura.zip attachment has a file size of 282,624 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x96D49C022C61CDBB88EDFB65B1CFD95C
The Fatura.exe file in the Fatura.zip attachment has a file size of 20480 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xD0452DA1358A5C2CF9AB170B2B66B459
The Fatura.cmd file in the Fatura.zip attachment has a file size of 282,624 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xA60B546900212AFE75E10C0A5595FB0D
The Boleto.cmd file in the Boleto.zip attachment has a file size of 368,640 bytes. The MD5 checksum is the following string: 0x21E9F84477A48C63115FE0E9A22E4DA8
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: Boleto@jcessoria.com.br
Message Body:
Zip archive attachment (Fatura_Cartao.txt.zip)
Or
Subject: Boleto de cobranca
Message Body:
Demostrativo em anexo.
Or
Subject: cobranca@checkok.com.br
Message Body:
Demostrativo em anexo.
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.
The security vulnerability applies to the following combinations of products.
Primary Products:
IntelliShield
Threat Outbreak Alert
Original Release Base
Associated Products:
N/A
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LEGAL DISCLAIMER The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
