{"id":184620,"date":"2026-08-19T10:27:13","date_gmt":"2026-08-19T10:27:13","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/184620\/"},"modified":"2026-08-19T10:27:13","modified_gmt":"2026-08-19T10:27:13","slug":"virus-cloudeye-se-siri-ceskem-jako-lavina","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/184620\/","title":{"rendered":"Virus CloudEye se \u0161\u00ed\u0159\u00ed \u010ceskem jako lavina"},"content":{"rendered":"

O tom, jak alarmuj\u00edc\u00ed toto \u010d\u00edslo je, sv\u011bd\u010d\u00ed i\u00a0dal\u0161\u00ed zachycen\u00e9 hrozby v\u00a0prvn\u00ed des\u00edtce nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch \u0161kodliv\u00fdch k\u00f3d\u016f v\u00a0\u010cesku. Jejich pod\u00edl se toti\u017e pohyboval pouze v\u00a0\u0159\u00e1du ni\u017e\u0161\u00edch jednotek procent. V\u00a0podstat\u011b jedinou v\u00fdjimkou je Agent.UWE, kter\u00e9mu v\u00a0nejnov\u011bj\u0161\u00edch statistik\u00e1ch pat\u0159\u00ed druh\u00e1 p\u0159\u00ed\u010dka s\u00a0pod\u00edlem 10,5\u00a0%.<\/p>\n

Jak je z\u00a0\u0159\u00e1dk\u016f v\u00fd\u0161e ale patrn\u00e9, v\u00a0sou\u010dasnosti d\u011bl\u00e1 bezpe\u010dnostn\u00edm expert\u016fm nejv\u011bt\u0161\u00ed vr\u00e1sky na \u010dele pr\u00e1v\u011b CloudEye. Tento nezvan\u00fd n\u00e1v\u0161t\u011bvn\u00edk toti\u017e ostatn\u00ed hrozby v\u00a0\u010cesku doslova p\u0159ev\u00e1lcoval.<\/p>\n

\u0160\u00ed\u0159\u00ed dal\u0161\u00ed viry<\/p>\n

CloudEye je tzv. loader. Pot\u00e9, co napadne za\u0159\u00edzen\u00ed, do n\u011bj za\u010dne stahovat dal\u0161\u00ed malware, v\u010detn\u011b ob\u00e1van\u00fdch infostealer\u016f Formbook, Agent Tesla, SnakeStealer nebo \u0161kodliv\u00fdch k\u00f3d\u016f Rescoms a\u00a0PureLogs.<\/p>\n

<\/a><\/p>\n

Podce\u0148ovat tuto hrozbu tedy rozhodn\u011b nen\u00ed na m\u00edst\u011b, nebo\u0165 v\u00a0podstat\u011b otev\u00edr\u00e1 zadn\u00ed vr\u00e1tka do Windows. A\u00a0t\u011bmi se pak m\u016f\u017ee dostat do po\u010d\u00edta\u010de cel\u00e1 plej\u00e1da t\u011bch nejob\u00e1van\u011bj\u0161\u00edch vir\u016f sou\u010dasnosti.<\/p>\n

Podobnou mechaniku \u00fatoku p\u0159itom vyu\u017e\u00edvaj\u00ed i\u00a0dal\u0161\u00ed \u0161kodliv\u00e9 k\u00f3dy, kter\u00e9 se v\u00a0uplynul\u00e9m m\u011bs\u00edci um\u00edstily na p\u0159edn\u00edch m\u00edstech \u017eeb\u0159\u00ed\u010dku. \u201eV \u010dervenci jsme v\u00a0\u010cesku op\u011bt nej\u010dast\u011bji detekovali malware CloudEyE. V\u00a0\u010dele pravideln\u00e9 statistiky ho tentokr\u00e1t doplnily \u0161kodliv\u00e9 k\u00f3dy Agent.UWE a\u00a0LausivLoader. Op\u011bt jsme tu tak m\u011bli trojici malwaru, kter\u00fd do napaden\u00e9ho za\u0159\u00edzen\u00ed stahuje dal\u0161\u00ed \u0161kodliv\u00e9 k\u00f3dy,\u201c konstatoval Martin Jirkal, vedouc\u00ed analytick\u00e9ho t\u00fdmu v\u00a0pra\u017esk\u00e9 v\u00fdzkumn\u00e9 pobo\u010dce Esetu.<\/p>\n

\u201ePodobn\u011b jako infostealery m\u016f\u017eeme na tyto \u0161kodliv\u00e9 k\u00f3dy narazit v\u00a0e-mailov\u00fdch p\u0159\u00edloh\u00e1ch, ve kter\u00fdch je \u00fato\u010dn\u00edci schov\u00e1vaj\u00ed do soubor\u016f p\u0159ipom\u00ednaj\u00edc\u00edch doklady k\u00a0objedn\u00e1vk\u00e1m, faktury apod. \u010ce\u0161tina se v\u00a0\u00fatoc\u00edch tentokr\u00e1t prakticky neobjevovala, krom\u011b p\u0159\u00edlohy s\u00a0ozna\u010den\u00edm CZ894_ZCU466\u02d9pdf.js, pod kterou se ukr\u00fdval pr\u00e1v\u011b malware CloudEyE. P\u0159esto je p\u0159ekvapiv\u00e9, \u017ee se n\u00e1m poda\u0159ilo \u00fatoky zachytit v\u00a0tak velk\u00e9m objemu. Je tak vid\u011bt, \u017ee i\u00a0anglicky ozna\u010den\u00e9 soubory a\u00a0dokumenty p\u0159ipom\u00ednaj\u00edc\u00ed faktury mohou b\u00fdt v\u00a0\u010cesku nebezpe\u010dn\u00e9, stejn\u011b jako p\u0159\u00edlohy ozna\u010den\u00e9 jen znaky a\u00a0\u010d\u00edsly, kter\u00e9 p\u0159\u00edjemce zpr\u00e1v evidentn\u011b neodrad\u00ed od jejich sta\u017een\u00ed a\u00a0spu\u0161t\u011bn\u00ed,\u201c vysv\u011btlil Jirkal.<\/p>\n

V\u00edcef\u00e1zov\u00e9 \u00fatoky<\/p>\n

Zd\u016fraznil, \u017ee tyto typy \u0161kodliv\u00fdch k\u00f3d\u016f jsou obvykle vyu\u017e\u00edvan\u00e9 ve v\u00edcef\u00e1zov\u00fdch \u00fatoc\u00edch. Jejich \u00fakolem je zakr\u00fdt \u0161kodlivou \u010dinnost a\u00a0odv\u00e9st pozornost od hlavn\u00edho \u00fakolu\u00a0\u2013 sta\u017een\u00ed a\u00a0spu\u0161t\u011bn\u00ed \u0161kodliv\u00e9ho k\u00f3du. V\u00a0posledn\u00ed dob\u011b se tito z\u00e1ke\u0159n\u00ed prost\u0159edn\u00edci nej\u010dast\u011bji vyu\u017e\u00edvaj\u00ed ke kr\u00e1de\u017e\u00edm hesel ulo\u017een\u00fdch v\u00a0po\u010d\u00edta\u010di, p\u0159esn\u011b tak toti\u017e pracuj\u00ed zmi\u0148ovan\u00e9 infostealery.<\/p>\n

Pr\u00e1v\u011b ot\u00e1zka bezpe\u010dnosti hesel je tedy podle expert\u016f aktu\u00e1ln\u011b velmi o\u017eehav\u00e1. \u201eBezpe\u010dn\u00e1 spr\u00e1va hesel je v\u00a0digit\u00e1ln\u00edm sv\u011bt\u011b ji\u017e z\u00e1kladem a\u00a0nutnost\u00ed. Ur\u010dit\u011b st\u00e1le plat\u00ed, \u017ee bychom hesla nem\u011bli ukl\u00e1dat do internetov\u00fdch prohl\u00ed\u017ee\u010d\u016f, ani si je sepsat n\u011bkam do souboru a\u00a0ulo\u017eit do po\u010d\u00edta\u010de. K\u00a0bezpe\u010dn\u00e9 spr\u00e1v\u011b hesel jsou ur\u010den\u00e9 specializovan\u00e9 programy, kter\u00e9 je ukl\u00e1daj\u00ed v\u00a0\u0161ifrovan\u00e9 podob\u011b, tzv. spr\u00e1vci hesel,\u201c podotkl Jirkal.<\/p>\n

\u201eU\u017eivatel\u016fm a\u00a0u\u017eivatelk\u00e1m tak\u00e9 nedoporu\u010dujeme, aby stejn\u00e1 hesla vyu\u017e\u00edvali u\u00a0v\u00edce \u00fa\u010dt\u016f. Pro ka\u017ed\u00fd online \u00fa\u010det bychom m\u011bli m\u00edt skute\u010dn\u011b pouze jedno unik\u00e1tn\u00ed heslo. Existuj\u00edc\u00ed hesla bych pak v\u0161ude, kde to dan\u00e1 slu\u017eba umo\u017e\u0148uje, doplnil v\u00edcef\u00e1zov\u00fdm ov\u011b\u0159ov\u00e1n\u00edm\u00a0\u2013 dal\u0161\u00edm faktorem, kter\u00fdm sv\u00e9 p\u0159ihl\u00e1\u0161en\u00ed potvrzujeme. Obvykle se jedn\u00e1 o\u00a0otisk prstu nebo o\u00a0potvrzovac\u00ed k\u00f3d z\u00a0SMS \u010di autentiza\u010dn\u00ed aplikace,\u201c uzav\u0159el bezpe\u010dnostn\u00ed expert.<\/p>\n

Nej\u010dast\u011bj\u0161\u00ed kybernetick\u00e9 hrozby pro Windows v \u010cR za \u010dervenec 2026:1.PowerShell\/CloudEyE trojan (46,30 %)2.JS\/Agent.UWE trojan (10,50 %)3.VBS\/LausivLoader trojan (3,48 %)4.JS\/ModiLoader trojan (2,68 %)5.Win32\/Formbook trojan (2,16 %)6.Win64\/Aotera trojan (1,70 %)7.MSIL\/Spy.AgentTesla trojan (1,33 %)8.JS\/Agent.VAJ trojan (1,23 %)9.MSIL\/PhantomStealer trojan (1,16 %)10.PowerShell\/Starter trojan (1,05 %)Zdroj: EsetJak se br\u00e1nit? Neotev\u00edrejte podez\u0159el\u00e9 p\u0159\u00edlohy v e-mailech. Bu\u010fte opatrn\u00ed zejm\u00e9na u soubor\u016f, kter\u00e9 ne\u010dek\u00e1te, maj\u00ed podivn\u00fd n\u00e1zev nebo se tv\u00e1\u0159\u00ed jako faktura, objedn\u00e1vka \u010di jin\u00fd d\u016fle\u017eit\u00fd dokument.Neinstalujte programy z neov\u011b\u0159en\u00fdch zdroj\u016f. Software stahujte pouze z ofici\u00e1ln\u00edch web\u016f v\u00fdrobc\u016f nebo z d\u016fv\u011bryhodn\u00fdch obchod\u016f s aplikacemi. Vyhn\u011bte se nezn\u00e1m\u00fdm odkaz\u016fm a pochybn\u00fdm str\u00e1nk\u00e1m.Pravideln\u011b aktualizujte syst\u00e9m a programy. Aktualizace opravuj\u00ed bezpe\u010dnostn\u00ed chyby, kter\u00e9 mohou \u00fato\u010dn\u00edci zneu\u017e\u00edt k napaden\u00ed va\u0161eho po\u010d\u00edta\u010de nebo mobilu.Pou\u017e\u00edvejte kvalitn\u00ed bezpe\u010dnostn\u00ed software. Antivirov\u00fd program pravideln\u011b aktualizujte a neignorujte jeho varov\u00e1n\u00ed. Pokud ozna\u010d\u00ed soubor nebo web jako nebezpe\u010dn\u00fd, rad\u011bji v n\u011bm nepokra\u010dujte.Chra\u0148te sv\u00e1 hesla. Pro ka\u017ed\u00fd \u00fa\u010det pou\u017e\u00edvejte jin\u00e9 a siln\u00e9 heslo, ide\u00e1ln\u011b ulo\u017een\u00e9 ve specializovan\u00e9m spr\u00e1vci hesel. Kde je to mo\u017en\u00e9, zapn\u011bte tak\u00e9 v\u00edcef\u00e1zov\u00e9 ov\u011b\u0159ov\u00e1n\u00ed.P\u0159i podez\u0159en\u00ed na n\u00e1kazu jednejte rychle. Odpojte za\u0159\u00edzen\u00ed od internetu, nespou\u0161t\u011bjte dal\u0161\u00ed programy ani se nep\u0159ihla\u0161ujte k citliv\u00fdm \u00fa\u010dt\u016fm. Nechte za\u0159\u00edzen\u00ed zkontrolovat bezpe\u010dnostn\u00edm softwarem nebo odborn\u00edkem a v p\u0159\u00edpad\u011b podez\u0159en\u00ed na \u00fanik hesel je co nejd\u0159\u00edve zm\u011b\u0148te.Jak zabezpe\u010dit po\u010d\u00edta\u010d i\u00a0mobil p\u0159ed hackery a\u00a0viry<\/p>\n

\u017deb\u0159\u00ed\u010dky nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch \u0161kodliv\u00fdch k\u00f3d\u016f zpravidla obsahuj\u00ed st\u00e1le stejn\u00e1 jm\u00e9na. Z\u00a0toho by se dalo usuzovat, \u017ee kyberzlo\u010dinci neprogramuj\u00ed \u017e\u00e1dn\u00e9 dal\u0161\u00ed hrozby. Realita je ale \u00fapln\u011b jin\u00e1, internetem koluj\u00ed ka\u017ed\u00fd den statis\u00edce nezvan\u00fdch n\u00e1v\u0161t\u011bvn\u00edk\u016f, kte\u0159\u00ed spol\u00e9haj\u00ed na d\u016fv\u011b\u0159ivost lid\u00ed \u010di slabiny syst\u00e9mu.<\/p>\n

Nebezpe\u010d\u00ed \u010d\u00edh\u00e1 na u\u017eivatele nej\u010dast\u011bji na internetu. Stejn\u011b tak se ale nezvan\u00ed n\u00e1v\u0161t\u011bvn\u00edci mohou ukr\u00fdvat na p\u0159enosn\u00fdch m\u00e9di\u00edch, jako jsou nejr\u016fzn\u011bj\u0161\u00ed extern\u00ed disky a\u00a0USB flashky. Zabezpe\u010dit je tedy vhodn\u00e9 jak\u00e9koli za\u0159\u00edzen\u00ed i\u00a0ve chv\u00edli, kdy nen\u00ed p\u0159ipojeno k\u00a0internetu.<\/p>\n

Obzvl\u00e1\u0161t\u011b to plat\u00ed o\u00a0chytr\u00fdch telefonech a\u00a0tabletech, kter\u00e9 se objevuj\u00ed v\u00a0tuzemsk\u00fdch dom\u00e1cnostech st\u00e1le \u010dast\u011bji. \u0158ada lid\u00ed si p\u0159itom ani neuv\u011bdomuje, \u017ee tato mobiln\u00ed za\u0159\u00edzen\u00ed mohou b\u00fdt napadena \u00fapln\u011b stejn\u011b jako klasick\u00e9 po\u010d\u00edta\u010de. Jak za\u0159\u00edzen\u00ed br\u00e1nit, se dozv\u00edte v\u00a0na\u0161em d\u0159\u00edv\u011bj\u0161\u00edm \u010dl\u00e1nku<\/a>.<\/p>\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"O tom, jak alarmuj\u00edc\u00ed toto \u010d\u00edslo je, sv\u011bd\u010d\u00ed i\u00a0dal\u0161\u00ed zachycen\u00e9 hrozby v\u00a0prvn\u00ed des\u00edtce nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch \u0161kodliv\u00fdch k\u00f3d\u016f v\u00a0\u010cesku. Jejich…\n","protected":false},"author":2,"featured_media":184621,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[13],"tags":[21075,510,920,921,21074,74,73,78,75,77,76],"class_list":["post-184620","post","type-post","status-publish","format-standard","has-post-thumbnail","category-veda-a-technika","tag-eset","tag-heslo","tag-kyberneticka-bezpecnost","tag-kyberneticky-utok","tag-malware","tag-science","tag-science-technology","tag-technika","tag-technology","tag-veda","tag-veda-a-technika"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/117121702409186232","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/184620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=184620"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/184620\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/184621"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=184620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=184620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=184620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}