{"id":1292,"date":"2018-07-20T18:23:48","date_gmt":"2018-07-20T18:23:48","guid":{"rendered":"https:\/\/warp.lacnic.net\/vacuna-para-gandcrab-ransomware-v4-1-2\/"},"modified":"2023-06-07T16:34:55","modified_gmt":"2023-06-07T13:34:55","slug":"vacuna-para-gandcrab-ransomware-v4-1-2","status":"publish","type":"post","link":"https:\/\/csirt.lacnic.net\/en\/news\/vacuna-para-gandcrab-ransomware-v4-1-2","title":{"rendered":"Vacuna para GandCrab Ransomware v4.1.2"},"content":{"rendered":"<p>El ransomware GandCrab asigna la extensi\u00f3n <em>.GDCB<\/em> o <em>.CANGREJO<\/em> a los archivos que encripta.<br \/>\nSe distribuye a trav\u00e9s de correos electr\u00f3nicos de spam y archivos adjuntos a los mismos. Por lo general se presentan como archivos pdf comprimidos pero en realidad contiene archivos de infecci\u00f3n .js.<\/p>\n<p>AhnLab public\u00f3 una vacuna que bloquea el ransomware GandCrab para que no pueda encriptar los archivos del usuario.<\/p>\n<p>Esta vacuna enga\u00f1a a este ransomware porque crea un archivo especial en la m\u00e1quina igual al archivo que chequea el ransomware GandCrab antes de encriptar los datos del usuario v\u00edctima.<\/p>\n<p>Se crea el archivo [hexadecimal-string].lock el cual se almacena en los siguientes directorios:<\/p>\n<ul>\n<li>Win XP: C:\\Documents and Settings\\All Users\\Application Data<\/li>\n<li>Win 7, 8, 10: C:\\ProgramData<\/li>\n<\/ul>\n<p>El valor hexadecimal es \u00fanico para cada usuario y se genera a partir de la informaci\u00f3n del disco ra\u00edz y un algoritmo personalizado Salsa20.<\/p>\n<p>GandCrab crea este archivo para identificar si esa m\u00e1quina ya fue infectada y evitar que se vuelva a encriptar la informaci\u00f3n, ya que al parecer esta doble acci\u00f3n destruir\u00eda los datos de forma permanente.<\/p>\n<p>Los usuarios pueden bajar la vacuna de AhnLab para GandCrab 4.1.2 desde:<br \/>\n<a href=\"http:\/\/asec.ahnlab.com\/1145\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/asec.ahnlab.com\/1145<\/a><\/p>\n<p>Referencias:<br \/>\n<a href=\"https:\/\/www.bleepingcomputer.com\/news\/security\/vaccine-available-for-gandcrab-ransomware-v412\/\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.bleepingcomputer.com\/news\/security\/vaccine-available-for-gandcrab-ransomware-v412\/<\/a><br \/>\n<a href=\"https:\/\/sensorstechforum.com\/es\/gandcrab-ransomware-removal-restore-gdcb-files\/\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/sensorstechforum.com\/es\/gandcrab-ransomware-removal-restore-gdcb-files\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>El ransomware GandCrab asigna la extensi\u00f3n .GDCB o .CANGREJO a los archivos que encripta. Se distribuye a trav\u00e9s de correos electr\u00f3nicos de spam y archivos adjuntos a los mismos. Por lo general se presentan como archivos pdf comprimidos pero en realidad contiene archivos de infecci\u00f3n .js. AhnLab public\u00f3 una vacuna que bloquea el ransomware GandCrab [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1358,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[46,18,24],"tags":[],"class_list":["post-1292","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archive","category-news","category-security-alerts"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LACNIC CSIRT - Vacuna para GandCrab Ransomware v4.1.2<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/csirt.lacnic.net\/en\/news\/vacuna-para-gandcrab-ransomware-v4-1-2\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LACNIC CSIRT - Vacuna para GandCrab Ransomware v4.1.2\" \/>\n<meta property=\"og:description\" content=\"El ransomware GandCrab asigna la extensi\u00f3n .GDCB o .CANGREJO a los archivos que encripta. Se distribuye a trav\u00e9s de correos electr\u00f3nicos de spam y archivos adjuntos a los mismos. Por lo general se presentan como archivos pdf comprimidos pero en realidad contiene archivos de infecci\u00f3n .js. 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