H4wk13:
Welcome! You did just fine with the post. You could also post this in General, but that doesn't matter at all.
A simple search led to this (and many more) result:
http://answers.microsoft.com/en-us/protect/forum/protect_scanning/another-one-slips-through-the-cracks-trojanhiloti/6d9a9bd0-9a63-41f3-8093-1259cc2f0364
More led to this explanation (referenced):
"Trojan.Hiloti is the latest malware you should look out for. Being a form of a Trojan downloader, Trojan.Hiloti will enter into a computer system covertly, to perform the function it was designed to do: to download and install additional and various malware, badware, adware, etc, so as to ensure that the Trojan, as well as the hacker in control of this whole operation, are equip with the full control of the infiltrated machine.
Trojan.Hiloti allows for a hacker from a remote location to change the infiltrated systems’ settings, delete important files, steal passwords and watch the user’s computer activity.
Infiltration methods used frequently by Trojan.Hiloti are as follows:
• Email: via email attachments, Trojan.Hiloti will enter into a system, disguised as a small file, for example: a jpeg or might be downloaded via a website or FTP.
• Websites: Many Trojan infections will exploit browser security vulnerabilities
• Open-Ports: Programs which allow for file-sharing functions, e.g. AIM, MSN messenger, are at risk of being used to install these nefarious infections, as it may ensure the hacker has remote control over the computer in question.
Trojan.Hiloti is designed to open up large security exploits through which hundreds of malicious adware and spyware will be able to infiltrate a system. In addition, Trojan.Hiloti opens a backdoor that allows the remote attacker to get full control over the infected computer.
This in turn leads to the hacker having full access to the user’s financial or banking information stored on the computer. Obviously this puts the user’s personal information in severe jeopardy and represents a serious security risk.
The term Trojan refers to the fact this particular malware, Trojan.Hiloti is installed under deceptive pretences, infiltrating the user’s PC without their approval or knowledge.
Trojan.Hiloti is particularly damaging to a computer system, once it has fully embedded itself within the PC’s system, therefore it is given a high priority security risk status by many computer analysts." - PCThreat.com
You might want to have a security suite on your computer. I'd recommend Kaspersky.
If you can't afford it, AVG or Avast! plus Zone Alarm free firewall might be an 'ok' alternative (only 'ok' because really? You get what you pay for), and add Mamutu 3.0 (free also) to whichever you choose (and firewall Zonealarm).
Don't open emails from people/places you don't know, and be suspicious of any attachments. Be careful where you browse and add a link "sniffer" extension to your browser.... like WOT or Threatfire.
As for the "Should I change my passwords?" question, I'd say "Yes." Why? Because you have no idea how long this malware has existed on your system (if it exists on your system). I say "If", because even software as good as the one which "found" it can be mistaken. False positives happen. However, continuing in the spirit of "playing it safe", it certainly couldn't hurt to change them. Incidentally, if you find an account you can't get into that should be taken as definitive proof you did have the malware infection. You should then contact the account managers and outline what happened. They should freeze the account. Reestablish yourself and use a new, "strong" password.
Hope this helps.
