Analysis by: Noel Anthony Llimos
ALIASES:

Generic.Ransom.GandCrab4.8CBC6992 (BitDefender)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops files as ransom note.

  TECHNICAL DETAILS

Arrival Details

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Ransomware adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\ex_data\
data

HKEY_CURRENT_USER\Software\keys_data\
data

Other Details

This Ransomware connects to the following possibly malicious URL:

  • http://www.{BLOCKED}impex.com:443
  • http://www.{BLOCKED}egrise.eu/data/assets/keesimmeru.gif
  • http://www.{BLOCKED}g.com/content/assets/imes.jpg
  • http://{BLOCKED}photo.ru/includes/tmp/esso.jpg
  • http://{BLOCKED}mpany.ru/wp-content/images/seruhede.jpg
  • http://www.{BLOCKED}undation.gm/wp-content/graphic/esmo.png
  • http://www.{BLOCKED}tfunnelblueprint.com/news/tmp/rukeamsoim.bmp
  • http://www.{BLOCKED}ear.com/news/pics/kaamkahede.png
  • http://{BLOCKED}da74.ru/content/tmp/sokaim.bmp
  • http://{BLOCKED}t.net/includes/images/daru.jpg
  • http://{BLOCKED}obabyphotographyseattle.com/includes/assets/eskethmoes.png
  • http://{BLOCKED}m.be/content/images/imrumo.gif
  • http://{BLOCKED}owradio.com:443
  • http://{BLOCKED}p.com:443
  • http://{BLOCKED}t.fr/static/imgs/dedamomo.gif
  • http://{BLOCKED}emi.com/wp-content/imgs/dedazu.gif
  • http://www.{BLOCKED}v.hu/news/imgs/deke.jpg
  • http://www.{BLOCKED}d.cz/wp-content/assets/esso.jpg
  • http://{BLOCKED}n.cn/data/image/soka.jpg
  • http://{BLOCKED}d.website/news/pics/kezu.bmp
  • http://{BLOCKED}inen.com/uploads/graphic/seimzuzu.jpg
  • http://{BLOCKED}mores.com.br/wp-content/pictures/esde.png
  • http://{BLOCKED}ckexpert.su/
  • http://{BLOCKED}n.dk/uploads/graphic/sedasefuke.gif
  • http://{BLOCKED}a.co.uk/wp-content/images/kedehemo.jpg
  • http://www.{BLOCKED}s.co.th/uploads/images/imeszumoes.bmp
  • http://{BLOCKED}tplus.ru/uploads/assets/zues.bmp
  • http://{BLOCKED}s.vn/data/assets/zuhemeamhe.png
  • http://{BLOCKED}isleri.com:443
  • http://www.{BLOCKED}viacao.com.br/news/image/somofuso.jpg
  • http://www.{BLOCKED}t.in/uploads/graphic/medeseru.png
  • http://www.{BLOCKED}edelixir.com/uploads/pics/rume.png
  • http://www.{BLOCKED}grp.com:443
  • http://{BLOCKED}me-fishing-croatia.hr:443
  • http://{BLOCKED}ionacif.com/wp-content/tmp/fuzuimka.png
  • http://www.{BLOCKED}ssconnect.com/content/graphic/thfudekeso.jpg
  • http://{BLOCKED}edding.ru/uploads/pics/fudafuam.bmp
  • http://{BLOCKED}t.theveeview.com/data/assets/kaeshe.bmp
  • http://{BLOCKED}rica.com.mx/static/pictures/darudemehe.png
  • http://{BLOCKED}l.com.ve:443
  • http://{BLOCKED}s.com.vn/news/images/amhe.jpg
  • http://{BLOCKED}lm.eu/data/graphic/zusorukaes.jpg
  • http://{BLOCKED}egas.com:443
  • http://{BLOCKED}l.by:443
  • http://www.{BLOCKED}landgolf.dk:443
  • http://{BLOCKED}ravel2018.com/content/graphic/zuimrumezu.jpg
  • http://{BLOCKED}lancus.pl/content/imgs/kedemeim.gif
  • http://{BLOCKED}motors.in:443
  • http://{BLOCKED}ypolyana123.ru/includes/pictures/zude.gif
  • http://{BLOCKED}oli.org/wp-content/image/demekesemo.gif
  • http://{BLOCKED}eed.club/data/assets/kazumo.bmp
  • http://{BLOCKED}h.lu/content/pictures/rufuam.gif
  • http://{BLOCKED}v.com.br:443
  • http://{BLOCKED}dinn.us/content/tmp/kathme.jpg
  • http://{BLOCKED}2.ru/news/images/seim.bmp
  • http://{BLOCKED}ibilisim.com/static/images/demehe.png
  • http://{BLOCKED}k.com/uploads/imgs/kefumethesru.jpg
  • http://{BLOCKED}s.co.uk/content/pics/dekeke.jpg
  • http://{BLOCKED}obalholding.com/data/image/zuamdezuka.bmp
  • http://{BLOCKED}orgasmo.cl/wp-content/pics/zusome.jpg
  • http://www.{BLOCKED}ine.fr/static/pictures/deimheseka.gif
  • http://{BLOCKED}ens.com:443
  • http://www.{BLOCKED}iasystems.com/data/pictures/soheka.jpg
  • http://{BLOCKED}palcity.top/content/pics/kasofues.jpg
  • http://{BLOCKED}iddleeastgate.com/data/assets/imdeheam.jpg
  • http://{BLOCKED}adsn2ag7e.xn--p1ai/wp-content/imgs/ames.jpg
  • http://www.{BLOCKED}a.com.br/includes/assets/daamso.bmp
  • http://{BLOCKED}vc1e.xn--p1acf/content/assets/moeszu.bmp
  • http://www.{BLOCKED}inapetrou.co.uk/static/pictures/demoruhe.jpg
  • http://www.{BLOCKED}od.co.uk/includes/pictures/kath.png
  • http://www.{BLOCKED}thfully.com/static/imgs/soheru.jpg
  • http://{BLOCKED}des/tmp/rumokaamfu.gif
  • http://{BLOCKED}lharf.com/data/graphic/hehefuzu.bmp
  • http://www.{BLOCKED}ventos.com.br/content/pics/zuesimzu.gif
  • http://www.{BLOCKED}deayrs.com:443
  • http://{BLOCKED}art.fr/uploads/images/sosoimru.png
  • http://www.{BLOCKED}gortaaydin.com/includes/graphic/kehe.bmp
  • http://{BLOCKED}y.com/uploads/image/mefude.png
  • http://{BLOCKED}m.com:443
  • http://{BLOCKED}hirty.pl/content/pictures/sehedathmo.gif
  • http://{BLOCKED}eerd.nl/data/tmp/ththam.bmp
  • http://{BLOCKED}orp.link:443
  • http://{BLOCKED}kongtrul.org.tw:443
  • http://{BLOCKED}hos.com:443
  • http://{BLOCKED}co.ir/wp-content/tmp/zuzukadazuda.jpg
  • http://{BLOCKED}ervice.ru/data/tmp/esmekedada.png
  • http://{BLOCKED}ts.com/includes/images/zuseimmese.bmp
  • http://www.{BLOCKED}ag.kiev.ua/data/graphic/dedakeda.jpg
  • http://{BLOCKED}com.cf/static/imgs/momeru.gif
  • http://www.{BLOCKED}a.cat/content/pictures/furu.png
  • http://{BLOCKED}les-noisetiers.fr/wp-content/assets/daeszu.jpg
  • http://www.{BLOCKED}1.ir/content/graphic/eske.bmp
  • http://{BLOCKED}d.com/content/tmp/deimka.png
  • http://{BLOCKED}ener.org/static/graphic/thhees.bmp
  • http://{BLOCKED}r.ga/news/pictures/hehesoda.jpg
  • http://{BLOCKED}rgym.nl/data/assets/mothda.bmp
  • http://{BLOCKED}ms.mx/content/graphic/mefumekezu.png
  • http://www.{BLOCKED}hinn.com:443
  • http://{BLOCKED}b.com.pl/wp-content/pictures/zuke.png
  • http://{BLOCKED}nclinic.com:443
  • http://www.{BLOCKED}skel.net:443
  • http://{BLOCKED}t.nu/wp-content/images/sefuamhemeam.gif
  • http://www.{BLOCKED}mviet.com/news/tmp/zurukazu.bmp
  • http://www.{BLOCKED}dent.com:443
  • http://www.{BLOCKED}tel.it/uploads/imgs/heesthsozu.bmp
  • http://www.{BLOCKED}eriors.com:443
  • http://{BLOCKED}o.com.au/wp-content/pictures/kakekaso.gif
  • http://{BLOCKED}tec.com.mx:443
  • http://www.{BLOCKED}rmdnsalonlar-fjb55aa34dpkdo.com:443
  • http://{BLOCKED}leng.com:443
  • http://{BLOCKED}yetsanthaomeo.com/static/assets/dathth.jpg
  • http://{BLOCKED}withmakeup.co.uk/uploads/pictures/kaesamdamo.png
  • http://www.{BLOCKED}k.com/includes/assets/amhe.jpg
  • http://{BLOCKED}olita.es/static/tmp/mesomodaru.gif
  • http://{BLOCKED}guridad.com:443
  • http://{BLOCKED}group.com/includes/imgs/mefutham.jpg
  • http://www.{BLOCKED}t.travel/wp-content/tmp/hememoseam.bmp
  • http://{BLOCKED}tudio.com.my/news/imgs/kemoes.bmp
  • http://www.{BLOCKED}etoit.fr/wp-content/graphic/zudemo.jpg
  • http://{BLOCKED}um.com.ua/content/images/thhehese.jpg
  • http://www.{BLOCKED}s-for-kids.de:443
  • http://www.{BLOCKED}ire.com/static/assets/esimes.gif
  • http://{BLOCKED}resa.com/static/pics/keheamam.gif
  • http://{BLOCKED}escangio.viethomes.land/news/pictures/rukede.bmp
  • http://{BLOCKED}ongroup.com/uploads/pics/mosefudafu.png
  • http://{BLOCKED}odazha.ru/content/image/kade.bmp
  • http://{BLOCKED}n.net/data/image/fuzufu.jpg
  • http://www.{BLOCKED}a.com.br/news/assets/ameses.jpg
  • http://www.{BLOCKED}roiscours.com:443
  • http://{BLOCKED}afilho.com.br:443
  • http://{BLOCKED}r.kz:443
  • http://{BLOCKED}caligrafosevilla.es/uploads/tmp/momosoimzu.gif
  • http://{BLOCKED}mani.net/content/image/amke.gif
  • http://www.{BLOCKED}e.fr:443
  • http://www.{BLOCKED}i.com/static/assets/hekakasoes.png
  • http://www.{BLOCKED}n.com:443
  • http://{BLOCKED}hrtek.yourcloud.cz/content/graphic/mome.gif
  • http://www.{BLOCKED}o.ir/data/images/amzuda.gif
  • http://www.{BLOCKED}transport.fr:443
  • http://{BLOCKED}ndshandyman.com/includes/image/ruam.gif
  • http://{BLOCKED}inegames.pro/uploads/images/mezufukememo.bmp
  • http://www.{BLOCKED}orideas9.com/data/imgs/semoamhe.bmp
  • http://www.{BLOCKED}echarro.com/wp-content/image/rukemozu.bmp
  • http://www.{BLOCKED}ews.com:443
  • http://{BLOCKED}selamatankerja.co/includes/assets/kamoam.bmp
  • http://{BLOCKED}b.com:443
  • http://www.{BLOCKED}i.co/content/imgs/kefuimdaruim.gif
  • http://www.{BLOCKED}sants.com/news/imgs/esmeheso.gif
  • http://{BLOCKED}rkservicesinc.com/wp-content/images/kaso.bmp
  • http://{BLOCKED}nabis.com/wp-content/tmp/zudahe.jpg
  • http://{BLOCKED}ntropetrolina.com/news/pictures/dasoda.bmp
  • http://{BLOCKED}folks.com/data/images/seruse.bmp
  • http://www.{BLOCKED}havetoshine.com/wp-content/image/esderude.gif
  • http://www.{BLOCKED}icholasossai.com/news/imgs/hekeimdefuru.png
  • http://www.{BLOCKED}puters.ro/content/pics/heruke.gif
  • http://{BLOCKED}rde.com/data/tmp/sokemeimim.gif
  • http://www.{BLOCKED}s.com/wp-content/assets/kethde.gif
  • http://www.{BLOCKED}eyprotein.com/wp-content/pics/mesoim.bmp
  • http://www.{BLOCKED}igitalweb.com:443
  • http://www.{BLOCKED}1.sr/uploads/pictures/thruse.png
  • http://{BLOCKED}raditions.nl/news/tmp/ammehees.gif
  • http://{BLOCKED}ud.com/news/tmp/hezudafu.png
  • http://{BLOCKED}ikalavathi.info/news/pictures/zuthseme.gif
  • http://{BLOCKED}viez.com/includes/graphic/thsezudeim.png
  • http://{BLOCKED}nsult.com/static/pictures/momeme.gif
  • http://{BLOCKED}aching.fr/static/graphic/zuruimesme.gif
  • http://{BLOCKED}ight.ru/uploads/image/zusodaes.gif
  • http://{BLOCKED}tore.com/data/pictures/dehethes.gif
  • http://www.{BLOCKED}omfortable.com:443
  • http://www.{BLOCKED}hotevents.com/content/imgs/hesoso.gif
  • http://{BLOCKED}s.kiev.ua/content/tmp/thkeseesmoim.bmp
  • http://www.{BLOCKED}eacademy.com:443
  • http://{BLOCKED}casinoterpercaya.com/?s=content+assets+damomo+png
  • http://{BLOCKED}ply.com/uploads/tmp/kathmomo.png
  • http://{BLOCKED}on7tanphu.com:443
  • http://{BLOCKED}ball24h.com/wp-content/graphic/imimsoth.jpg
  • http://{BLOCKED}kapner.com/data/pictures/thdezu.jpg
  • http://{BLOCKED}v.ro/news/imgs/deesesesth.jpg
  • http://www.{BLOCKED}a.co.uk:443
  • http://{BLOCKED}ctg.com/wp-content/images/esdethes.bmp
  • http://{BLOCKED}e.com.vn:443
  • http://{BLOCKED}omputer.com.br/includes/assets/mothkeme.jpg
  • http://{BLOCKED}analuxe.lviv.ua:443
  • http://{BLOCKED}dim.org/news/image/thim.gif
  • http://www.{BLOCKED}nto.com:443
  • http://www.{BLOCKED}barua.com:443
  • http://{BLOCKED}en.com/uploads/graphic/keam.gif
  • http://{BLOCKED}ton.com/includes/graphic/mofume.jpg
  • http://www.{BLOCKED}cherd.com/static/tmp/zuimmofuke.bmp
  • http://{BLOCKED}rno.com/static/pics/ruam.png
  • http://{BLOCKED}.{BLOCKED}.{BLOCKED}.222/includes/graphic/thdafuso.gif
  • http://{BLOCKED}.{BLOCKED}.99.165/news/image/kekeam.bmp
  • http://{BLOCKED}ayrimenkul.com/news/image/daseamso.png
  • http://{BLOCKED}.{BLOCKED}.1.219/uploads/imgs/zudesoke.jpg
  • http://{BLOCKED}ndicraft.com/includes/imgs/deheam.jpg/
  • http://{BLOCKED}oft.in/wp-content/tmp/kademomekede.bmp
  • http://{BLOCKED}.{BLOCKED}.96.238/data/images/amimsofu.gif
  • http://{BLOCKED}latpars.ir/content/imgs/hemo.bmp
  • http://{BLOCKED}.{BLOCKED}.17.9/uploads/images/damomo.bmp
  • http://{BLOCKED}kids.com.ua/static/assets/setheskemo.jpg
  • http://{BLOCKED}rdstone.com/wp-content/imgs/kekefu.gif
  • http://{BLOCKED}night.cz/includes/assets/herudamo.png
  • http://{BLOCKED}intakeaway.com/includes/imgs/esamamzuth.gif
  • http://{BLOCKED}2010usa.com/images/curried.php
  • http://{BLOCKED}urk.club/includes/tmp/mofusome.png
  • http://{BLOCKED}s.top/static/imgs/dade.png
  • http://{BLOCKED}rie.lemarchefrais.com/content/image/rukaeska.gif
  • http://{BLOCKED}carpet.com/uploads/assets/semeam.bmp
  • http://{BLOCKED}agroupbd.com/static/graphic/seruse.bmp
  • http://{BLOCKED}g.{BLOCKED}t.com/news/image/hezuso.png
  • http://{BLOCKED}inhduong.com/includes/tmp/ammoimes.bmp
  • http://{BLOCKED}que.com:443
  • http://{BLOCKED}n.com/uploads/images/hekezuru.png
  • http://{BLOCKED}d.com/uploads/images/zuimheka.png
  • http://{BLOCKED}oiles.com:443
  • http://{BLOCKED}ooomdevserver.com/wp-content/images/mede.bmp
  • http://{BLOCKED}llhdb.com/wp-content/image/esheam.jpg
  • http://{BLOCKED}p.fr:443
  • http://charm.andreea.{BLOCKED}droni.ro/static/images/amamde.jpg
  • http://{BLOCKED}isbuildcon.com:443
  • http://blog.{BLOCKED}e.com/news/tmp/amke.bmp
  • http://{BLOCKED}show.com/static/tmp/fuhezu.jpg
  • http://blog.{BLOCKED}aiwan.com/content/image/somodehe.jpg
  • http://{BLOCKED}oft.com:443
  • http://{BLOCKED}ngrosebd.com/uploads/tmp/dadedame.png
  • http://{BLOCKED}tyempire.com:443
  • http://{BLOCKED}ocarro.com.br/uploads/images/sesohekeda.bmp
  • http://{BLOCKED}flirtings.com/wp-content/pictures/zudesoth.gif
  • http://blog.{BLOCKED}od.mx/data/imgs/modake.jpg
  • http://{BLOCKED}evanlines.com/wp-content/assets/heme.png
  • http://{BLOCKED}a.no/

Ransomware Routine

This Ransomware appends the following extension to the file name of the encrypted files:

  • .{Random 5 Characters}

It drops the following file(s) as ransom note:

  • {Encrypted Directory}\{Appended File Extension}-DECRYPT.html

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.526.02
FIRST VSAPI PATTERN DATE: 25 Sep 2018
VSAPI OPR PATTERN File: 14.527.00
VSAPI OPR PATTERN Date: 26 Sep 2018

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\ex_data
    • data
  • In HKEY_CURRENT_USER\Software\keys_data
    • data

Step 4

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

Step 5

Scan your computer with your Trend Micro product to delete files detected as RANSOM_GANDCRAB.THOIBEAH. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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