Poisoned Emails
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But why worry? If your own, personal files (which are a tiny proportion of the files on your PC) and your configuration details for various programs (which don't amount to five beans' worth of disc space) are saved to other locations, then all you lose is an OS -- and I'd be quite happy to lose any OS higher than Win 7. Just use another machine while the "attacked" one is getting everything reinstalled and copied over, and you haven't lost a peanut.
I wanna be a eunuchs developer! Pass me a bread knife!
Mark, When I am attacked by Ransomware, it takes me less than 10 minutes to totally recover and clear my computer of the virus. (It has happened 3 times.) If data files are corrupted by the virus, add the time to overwrite the corrupted files from a backup that was disconnected at the time of the attack. Can you beat that? If yes: I would love to hear how!
Get me coffee and no one gets hurt!
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But why worry? If your own, personal files (which are a tiny proportion of the files on your PC) and your configuration details for various programs (which don't amount to five beans' worth of disc space) are saved to other locations, then all you lose is an OS -- and I'd be quite happy to lose any OS higher than Win 7. Just use another machine while the "attacked" one is getting everything reinstalled and copied over, and you haven't lost a peanut.
I wanna be a eunuchs developer! Pass me a bread knife!
Mark_Wallace wrote:
Just use another machine while the "attacked" one is getting everything reinstalled and copied over, and you haven't lost a peanut.
This is an option at work but I only have one computer at home (and I've hand built the thing into a real monster). Since I really don't like being without a computer at home or have to wait for my work PC to be re-imaged, I take a few extra steps to prevent my machines from being infected due to someone else's unwillingness to filter their advertising content before presenting it to me. I know that this approach only filters out all the 3rd party ads and any ads 'native' to the website are still displayed.
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
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Mark, When I am attacked by Ransomware, it takes me less than 10 minutes to totally recover and clear my computer of the virus. (It has happened 3 times.) If data files are corrupted by the virus, add the time to overwrite the corrupted files from a backup that was disconnected at the time of the attack. Can you beat that? If yes: I would love to hear how!
Get me coffee and no one gets hurt!
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Mark_Wallace wrote:
Just use another machine while the "attacked" one is getting everything reinstalled and copied over, and you haven't lost a peanut.
This is an option at work but I only have one computer at home (and I've hand built the thing into a real monster). Since I really don't like being without a computer at home or have to wait for my work PC to be re-imaged, I take a few extra steps to prevent my machines from being infected due to someone else's unwillingness to filter their advertising content before presenting it to me. I know that this approach only filters out all the 3rd party ads and any ads 'native' to the website are still displayed.
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
Hell, you can save everything important to one or more SD cards or memory sticks. These attackers can't follow back-up trails and locations, especially if it involves removable media. Look carefully at what it is that makes your computer to be Your Computer, and get a back-up program to back it up while you're sleeping. Formatting a drive and re-installing stuff is no great hardship. It's losing what's your own that's a pain, but that's easy to protect against.
I wanna be a eunuchs developer! Pass me a bread knife!
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Mark, When I am attacked by Ransomware, it takes me less than 10 minutes to totally recover and clear my computer of the virus. (It has happened 3 times.) If data files are corrupted by the virus, add the time to overwrite the corrupted files from a backup that was disconnected at the time of the attack. Can you beat that? If yes: I would love to hear how!
Get me coffee and no one gets hurt!
Unfortunately, C, I can't give you timing data, because I've never been daft enough to get infected in the first place! [Ambles away, whistling the theme to Goldfinger)
I wanna be a eunuchs developer! Pass me a bread knife!
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Are you backing up to a NAS?
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
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Are you backing up to a NAS?
Nooooo! A Ransom virus will encrypt all files on the network, especially files in servers or a NAS! Look what happened to the hospital in LA, who was forced to pay $17,000 to have files on their network unencrypted. You need to back up to an "air gap" device, that is only briefly connected to the network while the backup is being saved. That applies to backing up data files, as well as system drive images that are vital in case of an attack.
Get me coffee and no one gets hurt!
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Hell, you can save everything important to one or more SD cards or memory sticks. These attackers can't follow back-up trails and locations, especially if it involves removable media. Look carefully at what it is that makes your computer to be Your Computer, and get a back-up program to back it up while you're sleeping. Formatting a drive and re-installing stuff is no great hardship. It's losing what's your own that's a pain, but that's easy to protect against.
I wanna be a eunuchs developer! Pass me a bread knife!
That's a good point. 64GB or higher flash drives are relatively inexpensive and you can plug them into one of the mobo's usb ports. I could easily fit local files onto one. I don't think ransomeware encrypts executable files or libraries yet so no need to back those up. Heck, I could just write a program myself to perform the backup.
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
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Had the exact e-mail before. A good metric to see what scanners are good is to upload the attachment to http://www.virustotal.com and see which scanners detect it. Neither MalwareBytes nor Symantec picked it up when I checked awhile ago.
Um, clicking a button on a web-site that purports to tell you if a file is OK might not be a wise thing to do.
I wanna be a eunuchs developer! Pass me a bread knife!
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Unfortunately, C, I can't give you timing data, because I've never been daft enough to get infected in the first place! [Ambles away, whistling the theme to Goldfinger)
I wanna be a eunuchs developer! Pass me a bread knife!
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That's a good point. 64GB or higher flash drives are relatively inexpensive and you can plug them into one of the mobo's usb ports. I could easily fit local files onto one. I don't think ransomeware encrypts executable files or libraries yet so no need to back those up. Heck, I could just write a program myself to perform the backup.
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
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Quote:
I've never been daft enough
Mark, Innocent websites that you trust may become infected through hacking. If you browse to such a trusted website, are your prepared for the consequences?
Get me coffee and no one gets hurt!
You'd probably be surprised at how few sites I visit (on my own machines -- on work machines, who gives a banana?. I mean, the Interwebs are only useful for knowledge that you don't already have, and that's mostly a curiosity thing (and curiosity kills computers) The people who get hit by these viri are mostly facebookers and twatters. The rest of us aren't so dumb, so the scare stories don't apply to us.
I wanna be a eunuchs developer! Pass me a bread knife!
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Quote:
Are you backing up to a NAS?
Nooooo! A Ransom virus will encrypt all files on the network, especially files in servers or a NAS! Look what happened to the hospital in LA, who was forced to pay $17,000 to have files on their network unencrypted. You need to back up to an "air gap" device, that is only briefly connected to the network while the backup is being saved. That applies to backing up data files, as well as system drive images that are vital in case of an attack.
Get me coffee and no one gets hurt!
Air gap backups seem like a lot of trouble for my home since there really isn't much there that I couldn't go without and now they have malware designed to target 'air gapped' computers (Microtrend article). I guess the only way to prevent such attacks is not to become a target.
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
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Re-imaging your systems drive may take 10 minutes and will completely get rid of the virus if done right. How does that compare with the time to re-install an entire operating system and all apps?
Get me coffee and no one gets hurt!
True, but re-imaging requires constant updates that consume actual resources every day (and quite a lot of them), for the few files that you actually need to be backed up. Its only advantage is that it backs up the OS. Not giving a damn about the OS allows you to back-up a comparatively tiny amount of files, which consumes only petty system resources.
I wanna be a eunuchs developer! Pass me a bread knife!
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Air gap backups seem like a lot of trouble for my home since there really isn't much there that I couldn't go without and now they have malware designed to target 'air gapped' computers (Microtrend article). I guess the only way to prevent such attacks is not to become a target.
if (Object.DividedByZero == true) { Universe.Implode(); } Meus ratio ex fortis machina. Simplicitatis de formae ac munus. -Foothill, 2016
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True, but re-imaging requires constant updates that consume actual resources every day (and quite a lot of them), for the few files that you actually need to be backed up. Its only advantage is that it backs up the OS. Not giving a damn about the OS allows you to back-up a comparatively tiny amount of files, which consumes only petty system resources.
I wanna be a eunuchs developer! Pass me a bread knife!
For me, re-imaging is the way to go. However, I can do it in my sleep, so I don't see it as much of an obstacle. If you ever have a few spare moments, download and try imaging software like Macrium's Reflect or AOEMI Backupper Standard (all free). And see what it's all about. Good Luck! :-D
Get me coffee and no one gets hurt!
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Um, clicking a button on a web-site that purports to tell you if a file is OK might not be a wise thing to do.
I wanna be a eunuchs developer! Pass me a bread knife!
From the about page:
VirusTotal, a subsidiary of Google, is a free online service that analyzes files and URLs enabling the identification of viruses, worms, trojans and other kinds of malicious content detected by antivirus engines and website scanners. At the same time, it may be used as a means to detect false positives, i.e. innocuous resources detected as malicious by one or more scanners.
Nothing will ever detect 100% of the maliciousness out there but at least you can throw about 54 antivirus scanners (at the time of this writing) at a suspicious file.
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I and family members have seen a nasty increase in malware emails that most likely will plant a Ransom Virus if the attachment is acted upon. We now get several every week and sometimes several in one day. One of the most insidious is an email where the sender is spoofed to be Amazon. The "Amazon" message will seem to announce a shipment having been sent. However, there are two tell tale warning signs: 1) It is sent to an email address that only my friends and family know. I use a different email address for Amazon. 2) The message is empty, except for an attached Word document. Amazon never attaches Word documents to their emails. Like I'm going to open such a Word document and run the risk of a malicious macro getting run on my machine. :| The other type will be an empty email from myself to myself. It has an attached zip file that contains a Javascript file. If you look into the message header it is full of Arabic characters and is sent from a domain in Iran. Of course I am in the habit of running Javascripts from unknown sources on my machine. :| Now here's the bummer: If I scan these obviously malicious messages with Defender and Malwarebytes, they come up clean! I was wondering if anyone else has had similar experiences?
Get me coffee and no one gets hurt!
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I get a few dozen of these every day. "Past due bill" "Invoice Payment" "Fax sent" etc, etc...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
I and family members have seen a nasty increase in malware emails that most likely will plant a Ransom Virus if the attachment is acted upon. We now get several every week and sometimes several in one day. One of the most insidious is an email where the sender is spoofed to be Amazon. The "Amazon" message will seem to announce a shipment having been sent. However, there are two tell tale warning signs: 1) It is sent to an email address that only my friends and family know. I use a different email address for Amazon. 2) The message is empty, except for an attached Word document. Amazon never attaches Word documents to their emails. Like I'm going to open such a Word document and run the risk of a malicious macro getting run on my machine. :| The other type will be an empty email from myself to myself. It has an attached zip file that contains a Javascript file. If you look into the message header it is full of Arabic characters and is sent from a domain in Iran. Of course I am in the habit of running Javascripts from unknown sources on my machine. :| Now here's the bummer: If I scan these obviously malicious messages with Defender and Malwarebytes, they come up clean! I was wondering if anyone else has had similar experiences?
Get me coffee and no one gets hurt!
My sister forwarded me an email with an attachment she couldn't open. Because it was from my sister, and I thought she was expecting it, of course I try to open it to see what it's about and what's wrong. :doh: Thank goodness she reads her mails on her iDevice, and I similarly tried to open it on a Mac, so no damage, but she got a hot, sharp lecture on common sense and looking at email addresses to see where it originates from :mad: :mad: The downloaded attachment was obfuscated, but some of the variable names still conveyed intent. If I had time/inclination, would've liked to try figure out what it actually does.
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I and family members have seen a nasty increase in malware emails that most likely will plant a Ransom Virus if the attachment is acted upon. We now get several every week and sometimes several in one day. One of the most insidious is an email where the sender is spoofed to be Amazon. The "Amazon" message will seem to announce a shipment having been sent. However, there are two tell tale warning signs: 1) It is sent to an email address that only my friends and family know. I use a different email address for Amazon. 2) The message is empty, except for an attached Word document. Amazon never attaches Word documents to their emails. Like I'm going to open such a Word document and run the risk of a malicious macro getting run on my machine. :| The other type will be an empty email from myself to myself. It has an attached zip file that contains a Javascript file. If you look into the message header it is full of Arabic characters and is sent from a domain in Iran. Of course I am in the habit of running Javascripts from unknown sources on my machine. :| Now here's the bummer: If I scan these obviously malicious messages with Defender and Malwarebytes, they come up clean! I was wondering if anyone else has had similar experiences?
Get me coffee and no one gets hurt!
Cornelius Henning wrote:
If I scan these obviously malicious messages with Defender and Malwarebytes, they come up clean!
AFAIK, that's because the attachments don't contain any malware. They just contain code that downloads the malware from somewhere on the interwebz, and then launch the downloaded file. Your antivirus should pick up the downloaded file as malicious, but I wouldn't want to risk it. :~
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
