As you are all aware of the new ransomware has been used in the massive hacking attack, affecting tens of thousands of computers worldwide.
If any of the staff/User receive any suspicious emails and if you are not sure, please do not open any attachment files. Just forward it to your Admin for further investigation.
How to identify suspicious email:
- Unsolicited or unexpected email
- High importance emails
- Unofficial “From” email address
- Link to fake web sites
- Message asks for personal information
- The email urge you to take immediate action
- Review the signature
- Be wary of other methods to identify a legitimate site
Wannacry Ransomware fixes from Microsoft. Do update ASAP and share with others.
Windows XP SP3: http://download.windowsupdate.com/d/csa/csa/secu/2017/02/windowsxp-kb4012598-x86-custom-enu_eceb7d5023bbb23c0dc633e46b9c2f14fa6ee9dd.exe
Windows Vista x86: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/02/windows6.0-kb4012598-x86_13e9b3d77ba5599764c296075a796c16a85c745c.msu
Windows Vista x64: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/02/windows6.0-kb4012598-x64_6a186ba2b2b98b2144b50f88baf33a5fa53b5d76.msu
Windows 7 x64: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/02/windows6.1-kb4012212-x64_2decefaa02e2058dcd965702509a992d8c4e92b3.msu
Windows 7 x86: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/02/windows6.1-kb4012212-x86_6bb04d3971bb58ae4bac44219e7169812914df3f.msu
Windows 8: http://download.windowsupdate.com/c/msdownload/update/software/secu/2017/05/windows8-rt-kb4012598-x64_f05841d2e94197c2dca4457f1b895e8f632b7f8e.msu
Windows 8.1: http://download.windowsupdate.com/c/msdownload/update/software/secu/2017/02/windows8.1-kb4012213-x64_5b24b9ca5a123a844ed793e0f2be974148520349.msu
Windows 10: http://download.windowsupdate.com/c/msdownload/update/software/secu/2017/03/windows10.0-kb4012606-x64_e805b81ee08c3bb0a8ab2c5ce6be5b35127f8773.msu
Windows 2003 x86: http://download.windowsupdate.com/c/csa/csa/secu/2017/02/windowsserver2003-kb4012598-x86-custom-enu_f617caf6e7ee6f43abe4b386cb1d26b3318693cf.exe
Windows 2003 x64: http://download.windowsupdate.com/d/csa/csa/secu/2017/02/windowsserver2003-kb4012598-x64-custom-enu_f24d8723f246145524b9030e4752c96430981211.exe
Windows 2008: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/02/windows6.0-kb4012598-x64_6a186ba2b2b98b2144b50f88baf33a5fa53b5d76.msu
Windows 2008R2: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/02/windows6.1-kb4012212-x64_2decefaa02e2058dcd965702509a992d8c4e92b3.msu
Windows 2012: http://download.windowsupdate.com/c/msdownload/update/software/secu/2017/02/windows8-rt-kb4012214-x64_b14951d29cb4fd880948f5204d54721e64c9942b.msu
Windows 2012R2: http://download.windowsupdate.com/c/msdownload/update/software/secu/2017/02/windows8.1-kb4012213-x64_5b24b9ca5a123a844ed793e0f2be974148520349.msu
Windows 2016: http://download.windowsupdate.com/d/msdownload/update/software/secu/2017/03/windows10.0-kb4013429-x64_ddc8596f88577ab739cade1d365956a74598e710.msu
What is Ransomware?
Ransomware is malicious software that encrypts the files and locks device, such as a computer, tablet or smartphone and then demands a ransom to unlock it. Recently, a dangerous ransomware named ‘Wannacry’ has been affecting the computers worldwide creating the biggest ransomware attack the world has ever seen. This has affected computers in India also.
What is WannaCry Ransomware?
WannaCry ransomware attacks windows based machines. It also goes by the name WannaCrypt, WannaCry, WanaCrypt0r, WCrypt, WCRY.It leverages SMB exploit in Windows machines called EternalBlue to attack and inject the malware. All versions of windows before Windows 10 are vulneable to this attack if not patched for MS-17-010. After a system is affected, it encrypts the files and shows a pop up with a countdown and instructions on how to pay the 300$ in bitcoins to decrypt and get back the original files. If the ransom is not paid in 3 days, the ransom amount increases to 600$ and threatens the user to wipe off all the data. It also installs DOUBLEPULSAR backdoor in the machine.
How it spreads?
It uses EternalBlue MS17-010 to propagate. The ransomware spreads by clicking on links and downloading malicious files over internet and email. It is also capable of automatically speeding itself in a network by means of a vulnerability in Windows SMB. It scans the network for specific ports, searches for the vulnerability and then exploits it to inject the malware in the new machine and thus it spreads widely across the network.
What can you do to prevent infection?
Microsoft has released a Windows security patch MS17-010 for Windows machines. This needs to be applied immediately and urgently.
Remove Windows NT4, Windows 2000 and Windows XP-2003 from production environments. Ø Block ports 139, 445 and 3389 in the firewall.
Avoid clicking on links or opening attachments or emails from people you don’t know or companies you don’t do business with.
SMB is enabled by default on Windows. Disable smb service on the machine by going to Settings > uncheck the settings > OK
Make sure your software is up-to-date.
Have a pop-up blocker running on your web browser.
Regularly backup your files.
Install a good antivirus and a good antiransomware product for better security
Below is a consolidated list that needs to block on your firewall/antivirus
IPs to Block
Please Read Me!.txt (Older variant)
WannaCry 3.0 Ransomware
[Updated] WannaCry 3.0 Ransomware is now infecting systems worldwide. Reports suggest WannaCry links to Lazarus Group and the origin of attack was North Korea. Read this report now to find out more about WannaCry 3.0 and the similar codings (Contopee) of Lazarus Group. This group was responsible for the attack on Sony Pictures & a robbery of $81M on a Bangladeshi Bank in 2014!
Thanks to Marcus Hutchins who stopped the wave of WannaCry Ransomware by providing the decryption key! But is this going to be enough? Is this going to stop the cyber criminals from trying something new? NO! It’s not enough! WannaCry 3.0 is already on the roll and it seems like WannaCry 2.0 was just a test to know the working of latest version!
Camaeio founder, Matthieu Suchie has spotted the latest version of WannaCry Ransomware which was not spotted by Kaspersky Lap. This latest version was found from the newly infected system which was a “Kill Switch Version.”
Useful link if you infected:
Live attacks: http://map.norsecorp.com/#/