luissabino
asked on
Help with ransomware: [datadecrypt@qq.com].ETH
One of the computers was affected by ransomware and the excel files were the the files changed the name and added to name of the file i.id-5AAD7A69.[datadecrypt @qq.com].E TH
I need help
I need help
I hate to ask, but do you have good backups? The best protection against ransomware is a good tested backup routine. That being said, especially if you don't have backups, after you have taken the system off any network, including wireless you can check this site for a decryptor (https://www.nomoreransom.org/) and upload a sample file to id ransomware (https://id-ransomware.malwarehunterteam.com/).
I would echo Thomas in that it will be difficult to decrypt those files. Without a backup your options are limited.
If you have a backup you then might want to look at something that can detect Ransomware and even reverse it real time.
https://www.sophos.com/en-us/lp/ransomware.aspx
If you have a backup you then might want to look at something that can detect Ransomware and even reverse it real time.
https://www.sophos.com/en-us/lp/ransomware.aspx
The Eth threat is a variant of the Dharma virus family. After it infiltrates your system, it locks all the data, you have. Archives, documents, music, videos, pictures. Nothing escapes it. The infection uses encryption algorithms to seize control of your files. As mentioned, it attaches the ‘.eth’ extension at the end of each file.
As you can see, the infection also adds the email address, it wants you to write to. Do Not as, in fact, do not follow any of the ransomware’s demands. Nothing good comes from compliance.
The first and best method is to restore your data from a recent backup, in case that you have one. Usually when the ransomware encrypts a file it first makes a copy of it, encrypts the copy, and then deletes the original. Due to this you may try to use file recovery software to recover some of your original files.
As you can see, the infection also adds the email address, it wants you to write to. Do Not as, in fact, do not follow any of the ransomware’s demands. Nothing good comes from compliance.
The first and best method is to restore your data from a recent backup, in case that you have one. Usually when the ransomware encrypts a file it first makes a copy of it, encrypts the copy, and then deletes the original. Due to this you may try to use file recovery software to recover some of your original files.
A State of Georgia County just paid $400,000 to get their data back. I do hope you have good backups
Do not pay the ransom which will be supporting criminals. Emisoft has some decrpyting tools if you know what ransomware virus you are infected with. https://decrypter.emsisoft.com/ You can also go to this website to help you manually remove the infection. https://blog.emsisoft.com/en/31793/how-to-perform-manual-ransomware-removal/
A State of Georgia County just paid donated $400,000 to criminals/human trafficers/terrorists
If you are lucky, you can post one of your encrypted files here and see is a decryption tool is available
https://id-ransomware.malwarehunterteam.com/
Best prevention to Ransomware is only allowing whitelisted application access to sensitive paths, such as My Documents, and version controlled/air capped backup. Never pay the ransom because you have no guarantee that you will actually get the decryption key and the funds are almost always used for organized crime.
If I encrypt a file, for security or malicious intent and I use proper encryption the following is true
Here are some articles related to security hardening that you might find useful
Get rid of over-privileged users, such as ones in DA
https://www.experts-exchange.com/articles/29596/Securing-Active-Directory-Administrators-Groups.html
Implement a delegation model
https://www.experts-exchange.com/articles/29366/Delegation-the-proper-way.html
Securely manage local admin passwords, and administrator members
https://www.experts-exchange.com/articles/31583/Active-Directory-Securely-Set-Local-Account-Passwords.html
https://www.experts-exchange.com/articles/30617/How-to-manage-local-account-passwords-from-Active-Directory-without-LAPS.html
https://www.experts-exchange.com/articles/29652/Strategy-to-centrally-manage-Local-Administrators-group-from-Active-Directory.html
Get rid of old accounts that might be used maliciously
https://www.experts-exchange.com/articles/30820/Active-Directory-Cleanup-Tool-ADCleanup.html
Implement tier-isolation to prevent tier jumps from lateral movement
https://www.experts-exchange.com/articles/29515/Active-Directory-Simple-Tier-Isolation.html
Create intelligence password policies
https://www.experts-exchange.com/articles/33078/How-to-create-an-Intelligent-Password-Policy-for-Active-Directory.html
Utilize host-based firewalls, Windows or otherwise
https://www.experts-exchange.com/articles/31687/Windows-Firewall-as-Code.html
Do AD password audits
https://www.experts-exchange.com/articles/29515/Active-Directory-Simple-Tier-Isolation.html
Create your file server structure using the least privilege principle
https://www.experts-exchange.com/articles/32349/FSMainFolder-Files-Server-Structure-Automation-Tool.html
and implement a security framework such as CIS
https://www.cisecurity.org/
If you are lucky, you can post one of your encrypted files here and see is a decryption tool is available
https://id-ransomware.malwarehunterteam.com/
Best prevention to Ransomware is only allowing whitelisted application access to sensitive paths, such as My Documents, and version controlled/air capped backup. Never pay the ransom because you have no guarantee that you will actually get the decryption key and the funds are almost always used for organized crime.
If I encrypt a file, for security or malicious intent and I use proper encryption the following is true
Breaking a symmetric 256-bit key by brute force requires 2128 times more computational power than a 128-bit key. Fifty supercomputers that could check a billion billion (1018) AES keys per second (if such a device could ever be made) would, in theory, require about 3×1051 years to exhaust the 256-bit key space.https://en.wikipedia.org/wiki/Brute-force_attack
Here are some articles related to security hardening that you might find useful
Get rid of over-privileged users, such as ones in DA
https://www.experts-exchange.com/articles/29596/Securing-Active-Directory-Administrators-Groups.html
Implement a delegation model
https://www.experts-exchange.com/articles/29366/Delegation-the-proper-way.html
Securely manage local admin passwords, and administrator members
https://www.experts-exchange.com/articles/31583/Active-Directory-Securely-Set-Local-Account-Passwords.html
https://www.experts-exchange.com/articles/30617/How-to-manage-local-account-passwords-from-Active-Directory-without-LAPS.html
https://www.experts-exchange.com/articles/29652/Strategy-to-centrally-manage-Local-Administrators-group-from-Active-Directory.html
Get rid of old accounts that might be used maliciously
https://www.experts-exchange.com/articles/30820/Active-Directory-Cleanup-Tool-ADCleanup.html
Implement tier-isolation to prevent tier jumps from lateral movement
https://www.experts-exchange.com/articles/29515/Active-Directory-Simple-Tier-Isolation.html
Create intelligence password policies
https://www.experts-exchange.com/articles/33078/How-to-create-an-Intelligent-Password-Policy-for-Active-Directory.html
Utilize host-based firewalls, Windows or otherwise
https://www.experts-exchange.com/articles/31687/Windows-Firewall-as-Code.html
Do AD password audits
https://www.experts-exchange.com/articles/29515/Active-Directory-Simple-Tier-Isolation.html
Create your file server structure using the least privilege principle
https://www.experts-exchange.com/articles/32349/FSMainFolder-Files-Server-Structure-Automation-Tool.html
and implement a security framework such as CIS
https://www.cisecurity.org/
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