Know Your Malware: Danrit Removal

Danrit is a dangerous backdoor that provides the attacker with unauthorized remote access to a compromised computer. The parasite arrives in executable file, which has the icon of Adobe Acrobat document. Once the user runs such file, the backdoor installs itself to the system and attempts to launch Adobe Acrobat and open a predetermined local document in order to trick the user into thinking that a valid PDF file was opened. Then Danrit runs a payload. It opens a back door, which allows the intruder to run programs on a compromised computer, and starts logging all user keystrokes. Gathered data is sent to a predefined e-mail address every day from Monday to Thursday. The backdoor also creates a user account with the administrator's privileges. Danrit can automatically uninstall itself and remove all traces of its presence in the system. Every Friday it will terminate own processes, delete all related objects, created scheduled tasks and added user account. Danrit automatically runs on every Windows startup.

Related files: notesweb.exe, win052.exe, se.bat, sos0.bat, sos1.bat, sos2.bat, sos3.bat, sos4.bat, symantecav.lnk

Danrit properties:
Allows remote user connection
Sends out logs by FTP or email
Logs keystrokes
Hides from the user
Stays resident in background Remove Danrit, removal instructions

Linked by shanmuga Wednesday, 16th November 2005 11:18PM