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Friday 27 May 2016

Malware spam: "Neue Abrechnung Nr. 746441" / support@sipcall.de

This German-language spam has a malicious attachment:

From:    support@sipcall.de
Date:    27 May 2016 at 10:57
Subject:    Neue Abrechnung Nr. 746441


Guten Tag

Im Anhang erhalten Sie die neue Rechnung des vergangenen Monates mit der Abrechnungsnummer 746441.

Für eine fristgerechte Bezahlung danken wir Ihnen. Bei Fragen oder Anregungen steht Ihnen unser Kundendienst gerne zur Verfügung.


Freundliche Grüsse
Ihr VoIP Provider


Dies ist eine automatisch generierte Nachricht. Antworten auf diese E-Mail können nicht bearbeitet werden.

Reference numbers vary. Attached is a randomly-named Word document (e.g. INV842038-746441.docm). The sample I submitted to Malwr showed it downloading a binary from:

www.ding-a-ling-tel.com/98yh87nb6v4

Other sources indicate additional download locations at:

egadget.ru/98yh87nb6v4
www.samrhamburg.com/98yh87nb6v4
bridgeplacements.com/98yh87nb6v4
birlesimsucuklari.com/98yh87nb6v4
ecpi.ro/98yh87nb6v4
wondervalley.in/98yh87nb6v4

acnek.com/98yh87nb6v4
cacpa.org/98yh87nb6v4
cobrebactericida.org/98yh87nb6v4
greenwfms.com/98yh87nb6v4
iwebmediasavvy.com/98yh87nb6v4
projectodetalhe.pt/98yh87nb6v4
renaudsfurniture.ca/98yh87nb6v4
saintkatherine.orthodoxy.ru/98yh87nb6v4
www.orchidealito.it/98yh87nb6v4


There are probably other locations too.

An executable is dropped with a detection rate of 3/56. The Hybrid Analysis and DeepViz report both indicate different phone-home locations:

193.9.28.13 (FLP Kochenov Aleksej Vladislavovich / uadomen.com, Ukraine)
5.152.199.70 (Redstation, UK)


Private sources also indicate C2s at:

212.109.219.31 (JSC Server, Russia)
107.181.187.12 (Total Server Solutions, US)


The payload is Locky ransomware.

Recommended blocklist:
193.9.28.13
5.152.199.70
212.109.219.31
107.181.187.12

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