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FILTER POSTS BY LENGTH WELCOME TO TFTS! MODERATION INFO COPYRIGHT POLICY SPAM FILTER ALERT SISTER SUBREDDITS TALE SUBREDDITS THE BEST OF TFTS TFTS ESSENTIAL LINKS. I do desktop support for a K-12 private school, and do freelance work on the side. Due to the nature of my job, many of my clients are referrals from users at my day job - usually their home computers or mobile devices or kids' computers or the like.A couple of months ago, I got a call from a recently retired staff member who used to be the administrative assistant for the athletic department. Surprisingly for her age, she is actually decently tech savvy, but still at a user level. She figured out that she had accidentally gotten a virus, and wanted me to make a house call.So I get there right after work (conveniently, her development is about 500 feet maximum from the school - yeah, she worked there a while).

I jumped on her computer and took a look. Everything looked fine, except for a file in her Downloads folder. It wasn't an executable, though.

It was a JAR file.Me: Well, that's funny! It looks like the virus is written in Java. I'm sure it's harmless. I'll make sure it's no longer running, and you'll be good to go.I did a cursory check, and it seemed like it was running from the Downloads folder, so I deleted the JAR and went on my way, thinking that was that.No such luck. A week later, I got a call from her at work.AthAA: I think there's a big problem with my computer. My bank account was hacked, and the hackers transferred $3400 from my savings account to my checking account and tried to do a transfer out of the account.

Luckily I caught it in time and the bank is monitoring, but I need to get this fixed.Normally, I don't do freelance 'on the clock,' but given the urgency of the situation, I decided to make an exception. I had her fire up TeamViewer and remoted in.Me: Okay, let's take a look here. That's weird, Java is running!The JAR had, of course, copied itself to the AppData folder. Cursing my careless rookie mistake, I went into damage-control mode. I took a look around the AppData folder, and found a text file that looked a bit weird. I opened it.Me: Oooh, this is not good. There's a bunch of stuff in here that looks like usernames and passwords.Yep.

That harmless Java virus was actually a keylogger. Progecad 2020 download. They stole the password to her bank account that way. I did a significantly better job of cleaning her computer this time, and a week later, I managed to verify that I actually had cleaned it properly. But I am getting ahead of myself here.Two days later, around 9am, I received an email from her, sent over one of our distribution lists.From: AthAATo: All Faculty and StaffSubject: IMPORTANTPlease refer to the attachment carefullyThank youAttachment: PaymentInvoice.JARYep, that's right, a JAR file. The people who were using the keylogger to steal passwords had stolen the password to her school email account, and sent out the virus to everyone in her address book.We suspended her email account, but the damage was already done. As the Athletic Department administrative assistant, she had previously sent email to all the faculty and staff.

She had sent email to parents and to athletic employees at other schools. She had also sent email to the Lost and Found list, to which everyone at the school with an email account was subscribed. This included all faculty and staff, plus all students grades 5-12.

Of course, users being users, many of them opened the attachment.The rest of the morning was spent in ultra mega all-hands-on-deck damage control mode. Most of the students who clicked on it had Macs (that did not allow the JAR to open because it wasn't from an identified developer) or Chromebooks (which do not have Java). A few people tried to open it on mobile devices, which also didn't work. But about two dozen faculty/staff tried to open it on school-provided desktops or laptops, and about half of those people got infected. We did a lot of re-imaging that day. I also took her computer home at the end of that day to re-install Windows, but ended up figuring out that I had properly cleaned it the second time (after seeing this virus on a dozen computers, I got pretty good at seeing the symptoms).tl;dr: Don't judge a book (virus) by its cover.