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Friday 1 August 2014

"Payroll Received by Intuit" spam / Cryptowall

I haven't seen any fake Intuit spam for a while. This one comes with a malicious attachment:

Date:      Fri, 1 Aug 2014 07:59:12 -0600 [09:59:12 EDT]
From:      Intuit Payroll Services [IntuitPayrollServices@payrollservices.intuit.com]
Subject:      Payroll Received by Intuit

Dear, [redacted]
We received your payroll on August 01, 2014 at 09:01 AM EST.

Attached is a copy of your Remittance. Please click on the attachment in order to view it.

Please note the deadlines and status instructions below: If your payroll is received
BEFORE 5 p.m., your Direct Deposit employees will be paid two (2) banking days from the
date received or on your paycheck date, whichever is later.  If your payroll is received
AFTER 5 p.m., your employees will be paid three (3) banking days from the date received
or on your paycheck date, whichever is later.  YOUR BANK ACCOUNT WILL BE DEBITED THE DAY
BEFORE YOUR CHECKDATE. Funds are typically withdrawn before normal banking hours so
please make sure you have sufficient funds available by 12 a.m. on the date funds are to
be withdrawn. Intuit must receive your payroll by 5 p.m., two banking days before your
paycheck date or your employees will not be paid on time.  Intuit does not process
payrolls on weekends or federal banking holidays. A list of federal banking holidays can
be viewed at the Federal Reserve website. Thank you for your business.

Sincerely, Intuit Payroll Services

IMPORTANT NOTICE: This notification is being sent to inform you of a critical matter
concerning your current service, software, or billing. Please note that if you previously
opted out of receiving marketing materials from Intuit, you may continue to receive
notifications similar to this communication that affect your service or software. If you
have any questions or comments about this email, please DO NOT REPLY to this email. If
you need additional information please contact us.

If you receive an email message that appears to come from Intuit but that you suspect is
a phishing email, please forward it to immediately to spoof@intuit.com. © 2014 Intuit
Inc. All rights reserved. Intuit and the Intuit Logo are registered trademarks and/or
registered service marks of Intuit Inc. in the United States and other countries. All
other marks are the property of their respective owners, should be treated as such, and
may be registered in various jurisdictions.

Intuit Inc. Customer Communications
2800 E. Commerce Center Place, Tucson, AZ 85706
The attachment in this case is called Remittance.zip and it contains a malicious executable Remittance.exe which has a VirusTotal detection rate of 9/53.

According to the evidence of this very detailed ThreatTrack report [pdf], this is a version of Cryptowall. It makes network connections to various sites including the now-familiar

I recommend that you block the following domains and IPs:

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