Threat Outbreak Alert: Fake Purchase Order Confirmation E-mail Messages on March 15, 2013
Threat Type:
IntelliShield: Threat Outbreak Alert
IntelliShield ID:
27031
Version:
6
First Published:
2012 September 24 21:00 GMT
Last Published:
2013 March 15 22:29 GMT
Port:
Not Available
Urgency:
Possible Use
Credibility:
Confirmed
Severity:
Mild Damage
Version Summary:
Cisco Security Intelligence Operations has detected significant activity on March 15, 2013.
Description
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain purchase order information 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 .scr file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4572KVR) may contain the following files:
Order.zip deCrypted.scr Nota_fiscal_222239460.zip nota_fiscal_0124511254892.scr Purchase Order.zip Purchase Order.scr Order.scr Payment Slip.zip P.I.exe PO-01.zip New ans (2).scr dddddd.exe
The deCrypted.scr file in the Order.zip attachment has a file size of 614,517 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x633CB6E07CC421BF85DAAC4D526547FF
The nota_fiscal_0124511254892.scr file in the Nota_fiscal_222239460.zip attachment has a file size of 488,960 bytes. The MD5 checksum is the following string: 0xAE4E3A5621F4DA6F1D5EA4F89DE51F3D
The Purchase Order.scr file in the Purchase Order.zip attachment has a file size of 311,808 bytes. The MD5 checksum is the following string: 0x6AA7790DCC16D8FC7744B0DFEA078351
The Order.scr file in the Order.zip attachment has a file size of 188,928 bytes. The MD5 checksum is the following string: 0x4D8C758A655188B16DD9F97115DE44BA
The P.I.exe file in the Payment Slip.zip attachment has a file size of 688,418 bytes. The MD5 checksum is the following string: 0x65AD9CFCB8D9F6BA35353520084168A7
The New ans (2).scr file in the PO-01.zip attachment has a file size of 188,928 bytes. The MD5 checksum is the following string: 0xF64E0E61E92E590E46C57C369A559489
The dddddd.exe file in the Payment Slip.zip attachment has a file size of 985,817 bytes. The MD5 checksum is the following string: 0x3DCDC74C308287F2A043283930B06EC7
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: TRIAL PURCHASE ORDER CONFIRMATION...
Message Body:
Dear Sir,
Kindly check the attached purchase order and arrange to despatch the materials as soon as possible.
Take action with respect to the consolidation of the purchase order above.
Regards
zjang lee
----- End forwarded message -----
Or
Message Body:
Esta mensagem refere-se à Nota Fiscal NFS-e No. 0004514823624
emitida pelo prestador de serviços:
Razão Social: AMERICANAS.COM COMÉRCIO DE ELETRÔNICOS LTDA.
E-mail: contato@americanas.com
CCM : 3.218.906-0
CNPJ: 01.109.184/0004-38
COMPRA DEBITADO EM SEU CARTÃO EM 3 VESES SEM JUROS.
SEGUE ANEXO NOTA FISCAL E PRAZO DE ENTREGA..
Or
Subject: Purchase Order For January
Message Body:
Hello,
I have attached the signed purchase order list. Please confirm same so
we could expedite action on the process.
Please review and send us the PI to enable us make payment.
Thank you,
Natalwa Prudinina
Supervisor / Purchasing
Or
Subject: Re: Payment Slip.
Message Body:
Happy New Year to you. My Name is Mario Danilo. My colllegue contacted you last year as regards your products.
We have resumed for the year 2013 and we are ready to make purchase as earlier agreed.
Pls find attached the payment Confirmation slip of 30% via TT Bank Transfer. We will make complete payment on our previously agreed terms.
Please get back to me if you need any more clarification.
Yours Sincerely
Head Accounting Department
Mario Danilo
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 security appliances 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 Web Security Appliances will not be impacted by these attacks. Cisco security 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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