{"id":8809,"date":"2023-10-28T21:15:23","date_gmt":"2023-10-28T21:15:23","guid":{"rendered":"https:\/\/www.hexacorn.com\/blog\/?p=8809"},"modified":"2023-10-28T22:29:55","modified_gmt":"2023-10-28T22:29:55","slug":"beyond-the-good-ol-bashrc-entry-part-3","status":"publish","type":"post","link":"https:\/\/www.hexacorn.com\/blog\/2023\/10\/28\/beyond-the-good-ol-bashrc-entry-part-3\/","title":{"rendered":"Beyond the good ol’ .bashrc entry\u2026 Part 3"},"content":{"rendered":"\n

Update<\/strong><\/p>\n\n\n\n

After I posted it, @netspooky<\/a> pinged me with some additional info<\/a>. Apparently, this technique is known since at least 2019 and was demoed by @zer0pwn<\/a> first. This blog post<\/a> from MCG describes various offensive techniques focused on .desktop and .directory files.<\/p>\n\n\n\n

Old Post<\/strong><\/p>\n\n\n\n

This entry is a courtesy of Stephan<\/a>, who has discovered<\/a> that .desktop files can be used for persistence as well. Apparently, an ElectroRAT malware is already using this trick in the wild as well.<\/p>\n\n\n\n

To modify a list of startup application, you can follow these steps<\/a>: aka press ALT+F2 and type ‘gnome-session-properties’ and enter.<\/p>\n\n\n\n

Once you add a new entry f.ex.:<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

you will find the following .desktop file in your user home .config\/autostart sub-directory:<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

According to this tweet<\/a>, you can modify the:<\/p>\n\n\n\n

NoDisplay=false<\/pre>\n\n\n\n
line to:<\/p>\n\n\n\n
NoDisplay=true<\/pre>\n\n\n\n
and this way the entry will ‘disappear’ from the ALT+F2 GUI dialog box. As far as I can tell, this doesn’t work (tested on Ubuntu 22.04.1).<\/p>\n\n\n\n
In any case, add .config\/autostart directories to your DFIR analysis workflow.<\/p>\n\n\n\n
Once again, thanks to Stephan<\/a> who brought this to my attention. While we will probably never experience a true ‘year of linux on the desktop’ phenomenon, it’s good to know what the existing, GUI-oriented, non-power-user-oriented Linux desktop experience brings to the table…<\/p>\n","protected":false},"excerpt":{"rendered":"
Update After I posted it, @netspooky pinged me with some additional info. Apparently, this technique is known since at least 2019 and was demoed by @zer0pwn first. This blog post from MCG describes various offensive techniques focused on .desktop and … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[35,78],"tags":[],"_links":{"self":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/8809"}],"collection":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/comments?post=8809"}],"version-history":[{"count":8,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/8809\/revisions"}],"predecessor-version":[{"id":8822,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/8809\/revisions\/8822"}],"wp:attachment":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/media?parent=8809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/categories?post=8809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/tags?post=8809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}