FlyerTalk Forums

FlyerTalk Forums (https://www.flyertalk.com/forum/index.php)
-   Travel Technology (https://www.flyertalk.com/forum/travel-technology-169/)
-   -   Cryptolocker: How To Avoid It, What To Do If You Get It (https://www.flyertalk.com/forum/travel-technology/1524298-cryptolocker-how-avoid-what-do-if-you-get.html)

Landing Gear Nov 22, 2013 11:42 pm

Cryptolocker: How To Avoid It, What To Do If You Get It
 
This question came up in a thread I started this week, Hacked By Ransomware although "ransomware" and Cryptolocker are different.

Ransomware prevents you from using your computer unless you pay. But since the files are still intact, it may be possible to retrieve them.

About Cryptolocker, USA Today said:


This diabolically nasty malware locks up all of the victim’s personal files — and in some cases, backup files, too — with state-of-the-art encryption. The bad guys have the only decryption key and they demand $300 or two Bitcoins to get it.
An interesting web page, http://www.bleepingcomputer.com/viru...re-information responds to a question in the other thread:


How do you become infected with CryptoLocker
This infection is typically spread through emails sent to company email addresses that pretend to be customer support related issues from Fedex, UPS, DHS, etc. These emails would contain a zip attachment that when opened would infect the computer. These zip files contain executables that are disguised as PDF files as they have a PDF icon and are typically named something like FORM_101513.exe or FORM_101513.pdf.exe. Since Microsoft does not show extensions by default, they look like normal PDF files and people open them.
Within the FT community and particularly the regular users of the Travel Technology, there is a great deal of expertise. Moreover, many users have access to corporate IT and security departments and other computer and network specialists.

It is my hope that this thread can serve as a repository of information until this malicious piece of malware is eradicated.

Editorial note: I'd like the people running this scam rounded up and sent to GITMO, but that's just me.

cheltzel Nov 23, 2013 7:38 am


Originally Posted by Landing Gear (Post 21837263)
I'd like the people running this scam rounded up and sent to GITMO, but that's just me.

Why so nice?

I'm sure that there are suitable prisons in other countries that would be far more appropriate (far less humane).

gfunkdave Nov 23, 2013 8:50 am

Once your files have been encrypted, your only choice is to either pay for the key or wipe your computer and files.

This is why I'm happy most criminals are dumb: smart ones are bad news for everybody.

Loren Pechtel Nov 23, 2013 2:32 pm


Originally Posted by Landing Gear (Post 21837263)
Editorial note: I'd like the people running this scam rounded up and sent to GITMO, but that's just me.

Gitmo is far too nice for them.

nerd Nov 23, 2013 4:02 pm


This infection is typically spread through emails sent to company email addresses that pretend to be customer support related issues from Fedex, UPS, DHS, etc. These emails would contain a zip attachment that when opened would infect the computer. These zip files contain executables that are disguised as PDF files as they have a PDF icon and are typically named something like FORM_101513.exe or FORM_101513.pdf.exe. Since Microsoft does not show extensions by default, they look like normal PDF files and people open them.
Doesn't this depend on whether your email client (whether it's desktop-based or browser-based) shows extensions? Or are they saying that Microsoft Outlook doesn't show extensions?

Another reason to ditch Outlook, OP.

Always Flyin Nov 23, 2013 5:55 pm

Outlook shows file extension names.

Here it is a .zip file. You can see that, but when you open the .zip file, you can't see the extension of the compressed file.

That has nothing to do with Outlook.

ScottC Nov 23, 2013 8:28 pm

Q: Cryptolocker: What To Do If You Get It

A: Restore your backup from last night.

Landing Gear Nov 23, 2013 9:35 pm


Originally Posted by Landing Gear (Post 21837263)
Editorial note: I'd like the people running this scam rounded up and sent to GITMO, but that's just me.


Originally Posted by cheltzel (Post 21838252)
Why so nice?

I'm sure that there are suitable prisons in other countries that would be far more appropriate (far less humane).


Originally Posted by Loren Pechtel (Post 21840189)
Gitmo is far too nice for them.

Agreed. How about reopening Alcrataz or Devil's Island?


Originally Posted by nerd (Post 21840650)
Doesn't this depend on whether your email client (whether it's desktop-based or browser-based) shows extensions? Or are they saying that Microsoft Outlook doesn't show extensions?

Another reason to ditch Outlook, OP.


Originally Posted by Always Flyin (Post 21841183)
Outlook shows file extension names.

Here it is a .zip file. You can see that, but when you open the .zip file, you can't see the extension of the compressed file.

That has nothing to do with Outlook.

I'm reasonably happy with Outlook. I use it daily.


Originally Posted by ScottC (Post 21841972)
Q: Cryptolocker: What To Do If You Get It

A: Restore your backup from last night.

Because of course, everyone has a daily backup, since making daily backups can be done very easily without spending much money on hardware and software. What planet are you living on? :)

nkedel Nov 23, 2013 10:32 pm


Originally Posted by Landing Gear (Post 21842229)
Because of course, everyone has a daily backup, since making daily backups can be done very easily without spending much money on hardware and software. What planet are you living on? :)

The software is free, and built into any version of Windows since at least XP (the Windows Backup in NT 4.0 and earlier was tape-specific. Not sure about 2000, or if it was in 95/98/Me at all.) It's not super from any perspective, but it's there and it's reasonably easy.

The hardware is typically one external drive, cost between $70-$300 (at the higher end, it's a basic single-drive NAS; at the lower end, it's just USB.)

On a desktop, it's trivial; just schedule it, and leave it on overnight.

On a laptop, remembering to power it back up, and either connecting the drive or connecting it to a wired network (unless your volume of new files is quite low, in which case wireless might work) is tougher, but more in terms of habit vs. automation than actual practicalities.

On the road, it's much tougher. OTOH, images say, monthly, and then using dropbox or similar for your most critical documents day to day will cover most of it.

Still not easy, but it's mostly a matter of habit and time rather than software or hardware.

YVR Cockroach Nov 24, 2013 2:14 am

If the Cryptolocker guys or gals and those behind the other ransomware see this, they may well delay the programme actually locking you out until they're made certain your backups are also infected (assuming the payload can avoid detection).

cheltzel Nov 24, 2013 7:44 am


Originally Posted by YVR Cockroach (Post 21843027)
If the Cryptolocker guys or gals and those behind the other ransomware see this, they may well delay the programme actually locking you out until they're made certain your backups are also infected (assuming the payload can avoid detection).

If I read Landing Gear's original thread correctly, the AV product used was a free version of McAfee. IMO, there are much better products than McAfee.

From my personal experience, you really need to review your anti-malware and internet security software with some frequency. Look at the reviews, compare features, etc.

There are some very good free products available (Avast and AVG come to mind first). Both integrate very tightly with your browser and with something like Outlook (if you use Outlook).

There are also some good personal firewall products. I try to stay behind a firewall appliance when possible.

It is a shame but you really have to assume that you are perpetually in a hostile environment.

WWGuy Nov 24, 2013 10:21 am


Originally Posted by ScottC (Post 21841972)
Q: Cryptolocker: What To Do If You Get It

A: Restore your backup from last night.


Originally Posted by Landing Gear (Post 21842229)
Because of course, everyone has a daily backup, since making daily backups can be done very easily without spending much money on hardware and software. What planet are you living on? :)

Actually many of us enlightened Earthlings do perform daily backups to avoid unexpected data loss.

2TB USB desktop and portable backup solutions, including automated backup software, are available for less than $100. The Seagate Backup Plus family of products is just one example.

The cost is minimal. The initiative and discipline to perform daily backups is priceless.

chx1975 Nov 24, 2013 12:33 pm

I am using Crashplan. And there's a spare T420 laptop in the bedroom closet. I use Linux but that's beyond the question -- if anything happens to this laptop, hacked, stolen, broken, burns down in a fire, I can be back on where I was within the few hours it takes for Crashplan to download files.

Landing Gear Nov 24, 2013 12:42 pm


Originally Posted by cheltzel (Post 21844041)
If I read Landing Gear's original thread correctly, the AV product used was a free version of McAfee. IMO, there are much better products than McAfee.

Sorry, no. I never said that. In fact, I spoke of speaking on the phone with McAfee's alleged "tech support" in India. They charge for this.

Here is what I have been using at $35 a machine per year, McAfee SaaS Endpoint Protection.


Originally Posted by cheltzel (Post 21844041)

From my personal experience, you really need to review your anti-malware and internet security software with some frequency. Look at the reviews, compare features, etc.

Please see my new thread: http://www.flyertalk.com/forum/trave...l#post21845570

[QUOTE=WWGuy;21844848]


Actually many of us enlightened Earthlings do perform daily backups to avoid unexpected data loss.
drives/standard/backup-plus/"]Seagate Backup Plus[/URL] family of products is just one example.

The cost is minimal. The initiative and discipline to perform daily backups is
2TB USB desktop and portable backup solutions, including automated backup software, are available for less than $100. The [URL="http://www.seagate.com/external-hard-drives/portable-hard-priceless.
[/QUOTE]
Take me to your leader. :)

But let's face reality. Many people are almost glued to their laptops all day long. Full backups take hours. When you are done with your laptop, late at night (since you know you will not be able to use it until the next morning), many people are too tired to plug in a drive and start things up.

DenverBrian Nov 24, 2013 6:23 pm


Originally Posted by Landing Gear (Post 21845625)
But let's face reality. Many people are almost glued to their laptops all day long. Full backups take hours. When you are done with your laptop, late at night (since you know you will not be able to use it until the next morning), many people are too tired to plug in a drive and start things up.

Which is why I depend on a) a weekly backup, which is plenty for the work I do, and b) reasonable anti-virus/anti-malware software.

Oh, and c) Being VERY suspicious of files of the type mentioned as the ones used by the encrypter clowns.


All times are GMT -6. The time now is 11:28 am.


This site is owned, operated, and maintained by MH Sub I, LLC dba Internet Brands. Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Designated trademarks are the property of their respective owners.