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Sucuri Research Labs

The home of our Security Operations Group, including our Malware Research and Incident Response teams.

We recently discovered this malware with a list of IP ranges belonging to search engines that are serving them SEO spam. It even takes a snapshot of the website it’s on and uses that as a template so the pages look like they are a part of the website.

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A long-lasting malware campaign targeting deprecated, vulnerable versions of plugins continues to be leveraged by attackers to inject malicious scripts into affected websites. Easily automated vulnerabilities are the first choice for bad actors, who typically target different, vulnerable sites during a week period — by rotating malicious domains and injected code, they can improve their chances of avoiding detection.

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We found the following PHP backdoor in August 2018 along with other malware samples uploaded after hackers exploit a specific vulnerable WordPress plugin covered in this previous post.

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It's quite common that hosting providers have templates set for pages like 40x and 50x error pages but it's uncommon for those templates to have ads in them, or even worse, having malvertising that will blacklist your site.

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Dealing with Black Hat SEO injections on our daily operation is always fun and challenging at the same time. One day, we may work with heavily obfuscated codes but on another, it can be just spam in plain-text waiting to be removed.

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Latest malware entries

Hidden iframes

Latest hidden iframes our scanner have identified on compromised web sites.

# of sites infectedTypeMalware / Domains
55iframehttp://poseyhumane.org/stats.php
6iframehttp://zumobtr.ru/gate.php?f=1041671
6iframehttp://ads.rzb.ir/image.php?size_id=7
4iframehttp://www.cascadecowcutters.org/wp-content/upgrade/update.php
4iframehttp://couriertracking247.in/
2iframehttp://stjohnsdryden.org/img/common/download.php
2iframehttp://bucknine.cf/visionovni17.html
1iframehttp://www.trypie.info/update.php
1iframehttp://vefire.ru/apps/11/
1iframehttp://criosfera.cf/marahmerah17.html
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Conditional redirections

Conditional redirections we have detected (based on user agents or referers).

# of sites infectedTypeMalware / Domains
9redirectionshttp://goodhotwebmart.in/
6redirectionshttp://www.mpzbearing.in/
5redirectionshttp://portal-d.pw/XcTyTp
4redirectionshttp://default7.com
4redirectionshttp://alfsystem.com.my/includes/domit/1.php
2redirectionshttp://wwwjazztel.com/?folio=9PO6Z3MVF
2redirectionshttp://ww1.zibahairsalon.com/?folio=9POGF6H4I
2redirectionshttp://ww1.mtclassificados.net/?folio=9POGF6H4I
2redirectionshttp://top-24h-can-store.com/redirect.php?z=viagra
2redirectionshttp://summerphotography.net/?folio=9PO6Z3MVF
2redirectionshttp://slonova-gora.com/?folio=9POGF6H4I
2redirectionshttp://nubiangraphics.com/?folio=9PO6Z3MVF
2redirectionshttp://myflippincoach.biz/Deals/MyFlippinCoach/
2redirectionshttp://mathaids.com/?folio=9PO6Z3MVF
2redirectionshttp://luxurytds.com/go.php?sid=
2redirectionshttp://luckyherbssupply.in/
2redirectionshttp://laatminute.com/?folio=9PO6Z3MVF
2redirectionshttp://huaweidevices.es/?folio=9POGF6H4I
2redirectionshttp://hotmp3s.com/?folio=9PO6Z3MVF
2redirectionshttp://goldpole.com/?folio=9PO6Z3MVF
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Spammers

Latest spammers we have detected sending comment, forum or SEO spam.

# of sites infectedTypeMalware / Domains
20spammerhttp://123livesex.com/,forumspam,2014-01
20spammerhttp://20min.ch,forumspam,2014-01
20spammerhttp://90210daily.com/,forumspam,2014-01
20spammerhttp://EzAdBlaster.com,forumspam,2014-01
20spammerhttp://absolutefringe.com,forumspam,2014-01
20spammerhttp://adaptfunrun.org/,forumspam,2014-01
20spammerhttp://andresmarcossanchez.com/MichaelKors/ ,forumspam,2014-01
20spammerhttp://appliancelandinc.com/,forumspam,2014-01
20spammerhttp://audiobookkeeper.ru/,forumspam,2014-01
20spammerhttp://australiainternetsearch.com/,forumspam,2014-01
20spammerhttp://autism.sedl.org/index.php/about-us,forumspam,2014-01
20spammerhttp://axanaxplease.com/,forumspam,2014-01
20spammerhttp://ayurvedatradicional.com/wordpress/ ,forumspam,2014-01
20spammerhttp://azezhomeloans.com/body.html,forumspam,2014-01
20spammerhttp://baltimorecomiccon.com/sponsors/,forumspam,2014-01
20spammerhttp://bashkiaprrenjas.com/,forumspam,2014-01
20spammerhttp://bellezzaamica.it/Moncler-Sale-With-Free-Shipping.html,forumspam,2014-01
20spammerhttp://birdsofstkittsnevis.com/files/,forumspam,2014-01
20spammerhttp://bmaphoenix.org/young-professionals/,forumspam,2014-01
20spammerhttp://bradblaze.com.au/,forumspam,2014-01
Limited view... Only the top entries being displayed.

Encoded javascript

Encoded javascript (redirecting to blackhole and other exploit kits) or to build a remote call.

# of sites infectedTypeMalware / Domains
12javascripthttp://div-class-container.ru/m/": var a910ab1=[855,915,955,960,973,887,970,971,976,963,956,916...
22javascript<script>var b="red";c="mod";function setCookie(a,b,c){var d=new Date;d.setTime(d.getTime()+60*c...
20javascript<script>var b="red";c="mod";function setCookie(a,b,c){var d=new Date;d.setTime(d.getTime()+60*c...
17javascript<script src="http://pops.virgilio.us/pop.php?id=1"></script>
10javascript<script>var b="red";c="mod";function setCookie(a,b,c){var d=new Date;d.setTime(d.getTime()+60*c...
9javascript<script type="text/javascript">var pid='52877';var pixel='468x60';var c_pid='YWQ2LmV1';var pare...
9javascript<script type="text/javascript" src="http://psicholog-msk.ru/scripts/kd7tvnbv.php?id=3023929"></...
3javascript<script>izs=19099;tm="168242";</script><script language="JavaScript" type="text/JavaScript" cha...
2javascript<script type="text/javascript" src="http://ledomaine-miltat.fr/crbst_pa_0_p_22dshk39np8ay/wqqry...
1javascript<script type="text/javascript" src="http://ledomaine-miltat.fr/crbst_pa_0_p_22dshk39np8ay/wqqry...
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