TrojanSpy:Win32/Nivdort.R is a trojan that collects sensitive information for an attacker.
TrojanSpy:Win32/Nivdort.R creates the following files on your computer:
c:\documents and settings\administrator\local settings\temp\z8amauol5hs8ldxhwz4hp.exe
c:\documents and settings\administrator\start menu\programs\startup\zmvtedwm.exe
Note: <system folder> refers to a variable location that is determined by the malware by querying the Operating System. The default installation location for the System folder for Windows 2000 and NT is C:\Winnt\System32; and for XP, Vista, and 7 is C:\Windows\System32.
Modifies Hosts file
TrojanSpy:Win32/Nivdort.R modifies the Windows Hosts file. The local Hosts file overrides the DNS resolution of a website URL to a particular IP address. Malicious software may make modifications to the Hosts file in order to redirect specified URLs to different IP addresses. Malware often modifies an affected computer's Hosts file in order to stop users from accessing websites associated with particular security-related applications (such as antivirus for example).
Modifies system security settings
The malware may attempt to disable Firewall notifications from the Windows Security Center by making the following registry modification:
Adds value: "FirewallDisableNotify" With data: "1" To subkey: HKLM\SOFTWARE\Microsoft\Security Center
Contacts remote hosts
The malware may contact the following remote hosts using port 80:
Commonly, malware may contact a remote host for the following purposes:
To confirm Internet connectivity
To report a new infection to its author
To receive configuration or other data
To download and execute arbitrary files (including updates or additional malware)
To receive instruction from a remote attacker
To upload data taken from the affected computer
This malware description was produced and published using our automated analysis system's examination of file SHA1 097c5f4fae2e77be998b1ebab93ebdc630d1aabe.