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Tuesday, 5 July 2016

Malware spam: "Scanned image" leads to Locky

This fake document scan appears to come from within the victim's own domain but has a malicious attachment.

From:    administrator8991@victimdomain.com
Date:    5 July 2016 at 12:47
Subject:    Scanned image

Image data has been attached to this email.
Possibly due to an error in setting up the spam run, there is an attachment named 05-07-2016_rndnum(4,9)}}.docm which contains a malicious macro. We haven't seen much in the way of Word-based malware recently. The two samples I received have VirusTotal detection rates of 5/52 and 6/52. The Malwr analysis for those samples [1] [2] shows the macro downloading a binary from:

leafyrushy.com/98uhnvcx4x
sgi-shipping.com/98uhnvcx4x


There will be a lot more locations too. This drops a binary with a detection rate of 5/55 which appears to be Locky ransomware. Hybrid Analysis shows it phoning home to:

185.106.122.38 (Host Sailor, Romania / UAE)
185.106.122.46 (Host Sailor, Romania / UAE)
185.129.148.6 (MWTV, Latvia)


Host Sailor is a notoriously Black Hat web host, MWTV has is problems too. The payload appears to be be Locky ransomware.

Recommended blocklist:
185.106.122.0/24
185.129.148.0/24



1 comment:

Alejandro Lengua Vega said...

I got these spam messages. And some of them came from these IPs:

191.184.53.137
58.26.29.194