{"id":1846,"date":"2013-04-22T09:55:29","date_gmt":"2013-04-22T13:55:29","guid":{"rendered":"http:\/\/blog.nccomputertech.com\/?p=1846"},"modified":"2013-04-22T09:55:29","modified_gmt":"2013-04-22T13:55:29","slug":"trojan-horse-malware-destroys-delivery-files-to-hide-its-tactics","status":"publish","type":"post","link":"https:\/\/nccomputertech.com\/techtalk\/2013\/04\/22\/trojan-horse-malware-destroys-delivery-files-to-hide-its-tactics\/","title":{"rendered":"Trojan horse malware destroys delivery files to hide its tactics"},"content":{"rendered":"

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

Trojan horse malware destroys delivery files to hide its tactics
\nMicrosoft has discovered an unusually stealthy Trojan capable of deleting files it downloads in order to keep them away from forensics investigators and researchers.
\nThe Trojan downloader, called Win32\/Nemim.gen!A, is the latest example of how malware writers are using sophisticated techniques to protect their own trade secrets. The Trojan essentially makes downloaded component files irrecoverable, so they cannot be isolated and analyzed.
\n“During analysis of the downloader, we may not easily find any downloaded component files on the system,” Jonathan San Jose, a member of Microsoft’s Malware Protection Center, said in a blog post. “Even when using file recovery tools, we may see somewhat suspicious deleted file names but we may be unable to recover the correct content of the file.”
\nMicrosoft managed to grab some components as they were being downloaded from a remote server. The malware’s two purposes was to infect executable files in removable drives, and to unleash a password stealer to snatch credentials from email accounts, Windows Messenger\/Live Messenger, Gmail Notifier, Google Desktop, and Google Talk.,
\nTypically, downloaders’ only job is to deliver the core malware. In this case, the downloader delivered the malware and continued to be an integral part of the operation.
\nMalware gets sneaker
\nIn general, malware has become better at remaining under the radar. Some of the stealthiest malware is used in advanced persistent threats targeted at specific organizations.
\n“Malware that covers its tracks to prevent the security community from developing quick defensive signatures is the norm today,” said Paul Henry, a forensic analyst for Lumension.
\nFor sometime, criminals have developed malware that can sense when it is in a virtualized workstation commonly used by researchers to isolate and study malicious code. When it is in such an environment, the malware will enter a dormant state, so it cannot be easily discovered.
\nOther malware inserts its malicious code in system memory, never leaving a trail in the infected computer’s registry or hard drive, Henry said.
\n“Your grandfather’s security solutions will leave you utterly defenseless against today’s evolving threats,” he said.
\nvia Trojan horse malware destroys delivery files to hide its tactics | PCWorld<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Trojan horse malware destroys delivery files to hide its tactics Microsoft has discovered an unusually stealthy Trojan capable of deleting […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[5,7,9,11],"tags":[655,1104,1167],"class_list":["post-1846","post","type-post","status-publish","format-standard","hentry","category-microsoft","category-security","category-software","category-windows","tag-malware","tag-trojan","tag-virus"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/papNkV-tM","jetpack-related-posts":[{"id":8453,"url":"https:\/\/nccomputertech.com\/techtalk\/2015\/07\/07\/zeusvm-malware-building-tool-leak-may-cause-botnet-surge\/","url_meta":{"origin":1846,"position":0},"title":"ZeusVM malware building tool leak may cause botnet surge","author":"NCCT","date":"July 7, 2015","format":false,"excerpt":"The Internet could see a new wave of botnets based on the ZeusVM banking Trojan after the tools needed to build and customize the malware program were published online for free. The source code for the builder and control panel of ZeusVM version 2.0.0.0 was leaked sometime in June, according\u2026","rel":"","context":"In "Security"","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3156,"url":"https:\/\/nccomputertech.com\/techtalk\/2013\/08\/09\/hand-of-thief-banking-trojan-doesnt-do-windows-but-it-does-linux\/","url_meta":{"origin":1846,"position":1},"title":"\u201cHand of Thief\u201d banking trojan doesn\u2019t do Windows\u2014but it does Linux","author":"NCCT","date":"August 9, 2013","format":false,"excerpt":"Signaling criminals' growing interest in attacking non-Windows computers, researchers have discovered banking fraud malware that targets people using the open-source Linux operating system. Hand of Thief, which was recently discovered by researchers from security firm RSA, sells for about $2,000 in underground Internet forums and boasts its own support and\u2026","rel":"","context":"In "Linux"","block_context":{"text":"Linux","link":"https:\/\/nccomputertech.com\/techtalk\/category\/linux\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/nccomputertech.com\/techtalk\/wp-content\/uploads\/2013\/08\/hand-of-thief-640x294.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/nccomputertech.com\/techtalk\/wp-content\/uploads\/2013\/08\/hand-of-thief-640x294.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/nccomputertech.com\/techtalk\/wp-content\/uploads\/2013\/08\/hand-of-thief-640x294.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":8976,"url":"https:\/\/nccomputertech.com\/techtalk\/2016\/07\/15\/this-android-trojan-blocks-victims-from-alerting-banks\/","url_meta":{"origin":1846,"position":2},"title":"This Android Trojan blocks victims from alerting banks","author":"NCCT","date":"July 15, 2016","format":false,"excerpt":"By Michael Kan | PCWorld A new Trojan that can steal your payment data will also try to stymie you from alerting your bank. Security vendor Symantec has noticed a \u201ccall-barring\u201d function within newer versions of the Android.Fakebank.B malware family. By including this function, a hacker can delay the user\u2026","rel":"","context":"In "Security"","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7294,"url":"https:\/\/nccomputertech.com\/techtalk\/2014\/12\/29\/beware-fake-the-interview-movie-download-app-is-in-the-wild\/","url_meta":{"origin":1846,"position":3},"title":"Beware: Fake “The Interview” movie download app is in the wild","author":"NCCT","date":"December 29, 2014","format":false,"excerpt":"\"The Interview\" is undeniably the hottest movie of the year, which is a comedy about a plan to kill North Korea's leader, Kim Jong-un. It has also been the most controversial, backed by disputes with hackers threatening theaters who will play the said movie with physical action, and also by\u2026","rel":"","context":"In "Security"","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6960,"url":"https:\/\/nccomputertech.com\/techtalk\/2014\/11\/25\/stealthy-sophisticated-regin-malware-has-been-infecting-computers-since-2008\/","url_meta":{"origin":1846,"position":4},"title":"Stealthy, sophisticated ‘Regin’ malware has been infecting computers since 2008","author":"NCCT","date":"November 25, 2014","format":false,"excerpt":"Symantec researchers have identified a particularly sophisticated piece of malware, called \u201cRegin\u201d that was likely developed by a nation state and has been used to spy on governments, infrastructure operators, businesses, researchers and individuals since at least 2008. \u201cRegin displays a degree of technical competence rarely seen,\u201d Symantec said in\u2026","rel":"","context":"In "Security"","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5750,"url":"https:\/\/nccomputertech.com\/techtalk\/2014\/06\/11\/one-click-test-finds-gameover-zeus-infections-on-pcs\/","url_meta":{"origin":1846,"position":5},"title":"One-click test finds Gameover Zeus infections on PCs","author":"NCCT","date":"June 11, 2014","format":false,"excerpt":"Users can test by simply visiting a Web page if their computers have been infected with Gameover Zeus, a sophisticated online banking Trojan that law enforcement officers temporarily disrupted last week. The one-click test was developed by security researchers from antivirus vendor F-Secure and takes advantage of the malware\u2019s aggressive\u2026","rel":"","context":"In "Security"","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/posts\/1846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/comments?post=1846"}],"version-history":[{"count":0,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/posts\/1846\/revisions"}],"wp:attachment":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/media?parent=1846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/categories?post=1846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/tags?post=1846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}