{"id":100066,"date":"2021-04-30T16:23:09","date_gmt":"2021-04-30T14:23:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/rotajakiro-novoe-vredonosnoe-po-dlya-linux-maskiruyushheesya-pod-proczess-systemd"},"modified":"2021-04-30T16:23:09","modified_gmt":"2021-04-30T14:23:09","slug":"rotajakiro-novoe-vredonosnoe-po-dlya-linux-maskiruyushheesya-pod-proczess-systemd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/rotajakiro-novoe-vredonosnoe-po-dlya-linux-maskiruyushheesya-pod-proczess-systemd","title":{"rendered":"RotaJakiro \u2014 nov\u00fd malware pro Linux, maskuj\u00edc\u00ed se jako proces systemd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdzkumn\u00e1 laborato\u0159 360 Netlab ozn\u00e1mila zji\u0161t\u011bn\u00ed nov\u00e9ho malware pro Linux, kter\u00fd dostal k\u00f3dov\u00e9 jm\u00e9no RotaJakiro a zahrnuje implementaci backdooru, je\u017e umo\u017e\u0148uje \u0159\u00edzen\u00ed syst\u00e9mu. Malware mohl b\u00fdt nainstalov\u00e1n \u00fato\u010dn\u00edky po zneu\u017eit\u00ed neopravovan\u00fdch zranitelnost\u00ed v syst\u00e9mu nebo pou\u017eit\u00ed slab\u00fdch hesel. <\/p>\n

Backdoor byl odhalen b\u011bhem anal\u00fdzy podez\u0159el\u00e9ho provozu od jednoho z syst\u00e9mov\u00fdch proces\u016f, kter\u00fd byl identifikov\u00e1n p\u0159i zkoum\u00e1n\u00ed struktury botnetu pou\u017e\u00edvan\u00e9ho pro DDoS \u00fatok. P\u0159edt\u00edm z\u016fstal RotaJakiro nen\u00e1padn\u00fd po dobu t\u0159\u00ed let, konkr\u00e9tn\u011b prvn\u00ed pokusy o kontroly soubor\u016f s MD5 hashi, kter\u00e9 odpov\u00eddaj\u0105 zji\u0161t\u011bn\u00e9mu malwaru, jsou datov\u00e1ny k kv\u011btnu 2018. <\/p>\n

Mezi vlastnostmi RotaJakiro se uv\u00e1d\u00ed pou\u017eit\u00ed r\u016fzn\u00fdch technik maskov\u00e1n\u00ed p\u0159i spu\u0161t\u011bn\u00ed s opr\u00e1vn\u011bn\u00edmi neprivilegovan\u00e9ho u\u017eivatele a root. Pro skryt\u00ed sv\u00e9 p\u0159\u00edtomnosti backdoor pou\u017e\u00edval n\u00e1zvy proces\u016f systemd-daemon, session-dbus a gvfsd-helper, kter\u00e9, s ohledem na zapln\u011bn\u00ed modern\u00edch distribuc\u00ed Linux r\u016fzn\u00fdmi pomocn\u00fdmi procesy, na prvn\u00ed pohled vypadaly legitimn\u011b a nevzbuzovaly podez\u0159en\u00ed. <\/p>\n

P\u0159i spu\u0161t\u011bn\u00ed s opr\u00e1vn\u011bn\u00edmi root byly pro aktivaci malwaru vytv\u00e1\u0159eny skripty \/etc\/init\/systemd-agent.conf a \/lib\/systemd\/system\/sys-temd-agent.service, a samotn\u00fd spustiteln\u00fd soubor byl um\u00edst\u011bn jako \/bin\/systemd\/systemd-daemon a \/usr\/lib\/systemd\/systemd-daemon (funk\u010dnost byla duplikov\u00e1na ve dvou souborech). P\u0159i prov\u00e1d\u011bn\u00ed s opr\u00e1vn\u011bn\u00edmi b\u011b\u017en\u00e9ho u\u017eivatele byl pou\u017eit soubor pro automatick\u00e9 spou\u0161t\u011bn\u00ed $HOME\/.config\/au-tostart\/gnomehelper.desktop a prov\u00e1d\u011bny zm\u011bny v .bashrc, p\u0159i\u010dem\u017e spustiteln\u00fd soubor byl uchov\u00e1v\u00e1n jako $HOME\/.gvfsd\/.profile\/gvfsd-helper a $HOME\/.dbus\/sessions\/session-dbus. Sou\u010dasn\u011b byly spu\u0161t\u011bny oba spustiteln\u00e9 soubory, p\u0159i\u010dem\u017e ka\u017ed\u00fd z nich sledoval p\u0159\u00edtomnost druh\u00e9ho a obnovoval ho v p\u0159\u00edpad\u011b jeho ukon\u010den\u00ed. <\/p>\n

Pro skryt\u00ed v\u00fdsledk\u016f sv\u00e9 \u010dinnosti v backdooru bylo pou\u017eito n\u011bkolik \u0161ifrovac\u00edch algoritm\u016f, nap\u0159\u00edklad pro \u0161ifrov\u00e1n\u00ed sv\u00fdch zdroj\u016f se pou\u017e\u00edval AES, a pro skryt\u00ed komunika\u010dn\u00edho kan\u00e1lu s \u00fato\u010dn\u00edkem serverem<\/a> kombinace AES, XOR a ROTATE v kombinaci se zapojen\u00edm ZLIB. <\/p>\n

Pro z\u00edsk\u00e1n\u00ed ovl\u00e1dac\u00edch p\u0159\u00edkaz\u016f se malware spojoval se 4 dom\u00e9nami p\u0159es s\u00ed\u0165ov\u00fd port 443 (v komunika\u010dn\u00edm kan\u00e1lu byl pou\u017eit vlastn\u00ed protokol, nikoli HTTPS a TLS). Dom\u00e9ny (cdn.mirror-codes.net, status.sublineover.net, blog.eduelects.com a news.thaprior.net) byly zaregistrov\u00e1ny v roce 2015 a um\u00edst\u011bny u kyjevsk\u00e9ho hostingov\u00e9ho poskytovatele<\/a> Deltahost. Do backdooru bylo integrov\u00e1no 12 z\u00e1kladn\u00edch funkc\u00ed, kter\u00e9 umo\u017e\u0148ovaly nahr\u00e1vat a vykon\u00e1vat pluginy s roz\u0161\u00ed\u0159enou funk\u010dnost\u00ed, p\u0159en\u00e1\u0161et \u00fadaje o za\u0159\u00edzen\u00ed, zachyt\u00e1vat d\u016fv\u011brn\u00e9 informace a spravovat m\u00edstn\u00ed soubory.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0430\u044f \u043b\u0430\u0431\u043e\u0440\u0430\u0442\u043e\u0440\u0438\u044f 360 Netlab \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430 \u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0433\u043e \u041f\u041e \u0434\u043b\u044f Linux, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0435\u0433\u043e \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f RotaJakiro \u0438 \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0431\u044d\u043a\u0434\u043e\u0440\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0442\u044c \u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439. 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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100066","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47RotaJakiro \u2014 nov\u00fd malware pro Linux, maskuj\u00edc\u00ed se jako proces systemd | ProHoster","description":"V\u00fdzkumn\u00e1 laborato\u0159 360 Netlab informovala o objeven\u00ed nov\u00e9ho malwaru pro Linux s kryc\u00edm n\u00e1zvem RotaJakiro, kter\u00fd zahrnuje implementaci backdooru umo\u017e\u0148uj\u00edc\u00edho ovl\u00e1d\u00e1n\u00ed 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