{"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\/pl\/blog\/news\/rotajakiro-novoe-vredonosnoe-po-dlya-linux-maskiruyushheesya-pod-proczess-systemd","title":{"rendered":"RotaJakiro \u2013 nowe z\u0142o\u015bliwe oprogramowanie dla Linux, ukrywaj\u0105ce si\u0119 pod procesem systemd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Laboratorium badawcze 360 Netlab poinformowa\u0142o o wykryciu nowego z\u0142o\u015bliwego oprogramowania dla systemu Linux, kt\u00f3re otrzyma\u0142o kodow\u0105 nazw\u0119 RotaJakiro i zawiera implementacj\u0119 backdoora, pozwalaj\u0105cego na zarz\u0105dzanie systemem. Z\u0142o\u015bliwe oprogramowanie mog\u0142o zosta\u0107 zainstalowane przez atakuj\u0105cych po wykorzystaniu nieza\u0142atanych podatno\u015bci w systemie lub przez odgadni\u0119cie s\u0142abych hase\u0142. <\/p>\n

Backdoor zosta\u0142 wykryty podczas analizy podejrzanego ruchu z jednego z proces\u00f3w systemowych, zidentyfikowanego podczas analizy struktury botnetu, u\u017cywanego do ataku DDoS. Przed tym RotaJakiro pozostawa\u0142o niewykryte przez trzy lata, w szczeg\u00f3lno\u015bci pierwsze pr\u00f3by sprawdzenia w serwisie VirusTotal plik\u00f3w z haszami MD5 odpowiadaj\u0105cymi wykrytemu z\u0142o\u015bliwemu oprogramowaniu datowane s\u0105 na maj 2018 roku. <\/p>\n

Do cech RotaJakiro nale\u017cy wykorzystanie r\u00f3\u017cnych technik maskowania przy uruchamianiu z uprawnieniami u\u017cytkownika nieuprzywilejowanego i root. Aby ukry\u0107 swoj\u0105 obecno\u015b\u0107, backdoor u\u017cywa\u0142 nazw proces\u00f3w systemd-daemon, session-dbus i gvfsd-helper, kt\u00f3re, bior\u0105c pod uwag\u0119 zagracenie wsp\u00f3\u0142czesnych dystrybucji Linux r\u00f3\u017cnymi procesami roboczymi, na pierwszy rzut oka wydawa\u0142y si\u0119 legitymne i nie budzi\u0142y podejrze\u0144. <\/p>\n

Przy uruchamianiu z uprawnieniami root w celu aktywacji z\u0142o\u015bliwego oprogramowania tworzono skrypty \/etc\/init\/systemd-agent.conf oraz \/lib\/systemd\/system\/sys-temd-agent.service, a samo z\u0142o\u015bliwe pliki wykonywalne umieszczano jako \/bin\/systemd\/systemd-daemon oraz \/usr\/lib\/systemd\/systemd-daemon (funkcjonalno\u015b\u0107 by\u0142a duplikowana w dw\u00f3ch plikach). Przy wykonywaniu z uprawnieniami zwyk\u0142ego u\u017cytkownika u\u017cywano pliku autostartu $HOME\/.config\/autostart\/gnomehelper.desktop i wprowadzano zmiany w .bashrc, a plik wykonywalny przechowywano jako $HOME\/.gvfsd\/.profile\/gvfsd-helper oraz $HOME\/.dbus\/sessions\/session-dbus. Jednocze\u015bnie uruchamiano oba pliki wykonywalne, z kt\u00f3rych ka\u017cdy monitorowa\u0142 obecno\u015b\u0107 drugiego i przywraca\u0142 go w przypadku zako\u0144czenia pracy. <\/p>\n

Aby ukry\u0107 wyniki swojej dzia\u0142alno\u015bci, w backdoorze zastosowano kilka algorytm\u00f3w szyfrowania, na przyk\u0142ad do szyfrowania swoich zasob\u00f3w wykorzystywano AES, a do ukrywania kana\u0142u komunikacyjnego z kontrolerem. serwerem<\/a> zestaw AES, XOR i ROTATE w po\u0142\u0105czeniu ze skompresowaniem za pomoc\u0105 ZLIB. <\/p>\n

W celu uzyskania polece\u0144, z\u0142o\u015bliwe oprogramowanie \u0142\u0105czy\u0142o si\u0119 z 4 domenami przez port sieciowy 443 (u\u017cyto w\u0142asnego protoko\u0142u w kanale komunikacyjnym, a nie HTTPS i TLS). Domeny (cdn.mirror-codes.net, status.sublineover.net, blog.eduelects.com i news.thaprior.net) zosta\u0142y zarejestrowane w 2015 roku i s\u0105 hostowane w Kijowie dostawcy hostingu<\/a> Deltahost. W backdoora zintegrowano 12 podstawowych funkcji, kt\u00f3re pozwala\u0142y na \u0142adowanie i uruchamianie wtyczek z rozszerzon\u0105 funkcjonalno\u015bci\u0105, przesy\u0142anie danych o urz\u0105dzeniu, przechwytywanie poufnych danych oraz zarz\u0105dzanie lokalnymi plikami.
\n
\u0179r\u00f3d\u0142o: 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\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 nowe z\u0142o\u015bliwe oprogramowanie dla Linuxa, maskuj\u0105ce si\u0119 jako proces systemd | ProHoster","description":"Laboratorium badawcze 360 Netlab zg\u0142osi\u0142o wykrycie nowego z\u0142o\u015bliwego oprogramowania dla Linuxa, kt\u00f3re otrzyma\u0142o nazw\u0119 kodow\u0105 RotaJakiro i zawiera implementacj\u0119 backdoora, umo\u017cliwiaj\u0105cego zarz\u0105dzanie 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