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Wednesday 27 April 2016

Malware spam: Message from "RNP0BB8A7" / CLAUDIA MARTINEZ leads to Locky

This Spanish-language spam leads to malware:

From:    CLAUDIA MARTINEZ [contab_admiva2@forrosideal.com]
Date:    27 April 2016 at 16:22
Subject:    Message from "RNP0BB8A7"

Este e-mail ha sido enviado desde "RNP0BB8A7" (Aficio MP 171).

Datos escaneo: 27.04.2016 00:31:10 (+0000)
Preguntas a: soporte@victimdomain.tld
Attached is a  randomly-named ZIP file (e.g. 053324_00238.zip) which contains a malicious script (e.g. 0061007_009443.js). The samples I have seen download a binary from:

mebdco.com/8759j3f434
amwal.qa/8759j3f434
ecmacao.com/8759j3f434
lifeiscalling-sports.com/8759j3f434


This drops a version of what appears to be Locky ransomware with a detection rate of zero. I know from another source, that these additional download locations were being used for an English-language spam run this afternoon:

absxpintranet.in/8759j3f434
amismaglaj.com.ba/8759j3f434
caegpa.com/8759j3f434
codeaweb.net/8759j3f434
coorgcalling.com/8759j3f434
gedvendo.com/8759j3f434
gedvendo.com.pe/8759j3f434
mc2academy.com/8759j3f434
teyseerlab.com/8759j3f434
www.adgroup.ae/8759j3f434
www.rumbafalcon.com/8759j3f434


This DeepViz report shows the malware phoning home to:

107.170.20.33 (Digital Ocean, US)
139.59.166.196 (Digital Ocean, Singapore)
146.185.155.126 (Digital Ocean, Netherlands)


There's a triple whammy for Digital Ocean! Well done them.

Recommended blocklist:
107.170.20.33
139.59.166.196
146.185.155.126

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