Trojan Dropper:Win32/Necurs is a computer threat specifically crafted to download other malware it fetches from specified server. There are several versions of this Trojan that carries various additional payload. However, the common goal of Trojan Dropper:Win32/Necurs is to drop and install malware, fake program, and adware on the affected computer. Backdoor is another function that can be initiated by this threat, in which it allows a remote attacker to access the infected system.
Damage Level: Medium
Systems Affected: Windows 9x, 2000, XP, Windows Vista/7
When Trojan Dropper:Win32/Necurs is executed, it will drop a number of files inside the System folder of Windows. The threat also includes certain strings on Windows registry that loads a harmful code on each time you start the computer.
If Trojan Dropper:Win32/Necurs is loaded and running, it configures the firewall settings to allow the Trojan traffic to pass-through. With this transmission, attacker may gain access on the computer and is able to perform the following actions:
- Drop and execute remote files
- Log key strokes from the computer
- Steal sensitive data like user name and password
- Update the Trojan and increase its dominance on the infected PC
Trojan Dropper:Win32/Necurs spreads in a number of ways. It often arrives as an attached file to spam email messages. There are also cases, that another type of virus will download and execute this threat on the target computer through malicious links.
There will be no other visual signs of the infection other than constant warnings and alerts that flashes by your installed antivirus program. See the screenshot image for your reference.