Hermes 2.1 Ransomware

Also Known As: Hermes 2.1 virus
Distribution: Moderate
Damage level: Severe

Hermes 2.1 ransomware removal instructions

What is Hermes 2.1?

Hermes 2.1 is an updated version of a ransomware-type virus called Hermes. Developers proliferate this malware by using spam email campaigns. Once infiltrated, Hermes 2.1 encrypts most stored data, thereby making it unusable. To achieve this, Hermes 2.1 employs a RSA-2048 encryption algorithm. Note, however, that unlike other ransomware, Hermes 2.1 does not append any extension or rename compromised files in any way. After successfully encrypting data, this virus generates an HTML file ("DECRYPT_INFORMATION.HTML") and places a copy in each existing folder.

The new HTML file contains a ransom-demand message. It is stated that data is encrypted and that the victim must pay to receive a decryption tool. Bear in mind that Hermes 2.1 uses RSA-2048 (very complex asymmetric cryptography). This encryption algorithm generates two unique keys (public [encryption] and private [decryption]) for each victim. Restoring files without the private key is impossible. Cyber criminals hide all private keys on a remote server and then attempt to blackmail victims for their release. The cost is currently unknown - all details are provided to victims via email. In most cases, however, the size of ransom fluctuates between $500 and $1500, and must be paid in a type of cryptocurrency (usually, Bitcoins). Regardless of the cost, do not pay. Research shows that ransomware developers often ignore victims, once payments are submitted. Therefore, paying typically gives no positive result and users are scammed. Unfortunately, there are no tools capable of cracking RSA algorithm and restoring files free of charge - the only solution is to restore everything from a backup.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Hermes 2.1 decrypt instructions

There are dozens of ransomware-type virus that have similar characteristics to Hermes 2.1 (including, for example, Jigsaw, LanRan, and Evil Locker). Research shows that although these viruses are developed by different cyber criminals, their behavior is identical - all encrypt data and make ransom demands. In most cases, the only major differences are size of ransom and type of encryption algorithm used. Unfortunately, these viruses typically employ algorithms that generate unique decryption keys (e.g., RSA, AES, and so on). Therefore, it is virtually impossible to decrypt data manually, without involvement of developers (contacting these people is not recommended). The only possible scenarios are the ransomware not being fully developed or having certain bugs/flaws (e.g., the key is hard-coded, stored locally, or similar). It is very important to maintain regular data backups, however, note that they must be stored on an unplugged storage device or cloud. This will prevent ransomware from encrypting backups together with regular data.

How did ransomware infect my computer?

Hermes 2.1 is mainly distributed using spam emails (malicious attachments). Infectious email attachments are usually delivered in the format of JavaScript files or MS Office documents. Once opened, these files stealthily download and install malware. Note, however, that ransomware-type viruses are often proliferated using trojans, peer-to-peer (P2P) networks (torrents, eMule, etc.), third party software download sources (freeware download websites, free file hosting sites, and so on), and fake software updates. Trojans open "backdoors" for other viruses to infiltrate the system. P2P networks and other unofficial download sources present malicious executables as legitimate software, thereby tricking users into downloading and installing malware. Fake software updaters infect the system by exploiting outdated software bugs/flaws or simply downloading and installing viruses rather than updates. In summary, the main reasons for computer infections are poor knowledge and careless behavior. The key to safety is caution.

Threat Summary:
Name Hermes 2.1 virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension Updated variants of Hermes 2.1 ransomware append "[caspers@scryptmail.com].HRM" or "[supportdecrypt@firemail.cc].HRM" extensions.
Ransom Demanding Message DECRYPT_INFORMATION.HTML
Cyber Criminal Contact decryptsupport@protonmail.com, decryptsupport@cock.li, caspers@scryptmail.com, supportdecrypt@firemail.cc
Detection Names BitDefender (Gen:Variant.Graftor.646175), Emsisoft (Gen:Variant.Graftor.646175 (B)), ESET-NOD32 (A Variant Of Win32/Kryptik.GWJU), Fortinet (W32/Kryptik.GWJU!tr), Full List (VirusTotal)
Rogue Process Name sAMsUNg, Vh Pal Dod (process names vary) 
Symptoms Can't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password stealing trojans and malware infections can be installed together with a ransomware infection.
Malware Removal (Windows)

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How to protect yourself from ransomware infections?

To prevent system infiltration by PUPs, be very cautious when browsing the Internet and downloading/installing/updating software. Carefully analyze each email attachment received. Irrelevant files and those received from suspicious/unrecognizable email addresses should never be opened. Furthermore, avoid using third party downloaders/installers, since developers monetize them by promoting PUPs. Software should be downloaded from official sources only, using direct download links. It is also important to keep installed applications up-to-date, however, use implemented functions or tools provided by the official developer only. Having a reputable anti-virus/anti-spyware suite installed and running is also paramount. The key to computer safety is caution. If your computer is already infected with Hermes 2.1, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in Hermes 2.1 ransomware HTML file ("DECRYPT_INFORMATION.html"):

HERMES 2.1 RANSOMWARE

All your important files are encrypted
Your files has been encrypted using RSA2048 algorithm with unique public-key stored on your PC.
There is only one way to get your files back: contact with us, pay, and get decryptor software.
We accept Bitcoin, and other cryptocurrencies, you can find exchangers on bestbitcoinexchange.io
You have unique idkey (in a yellow frame), write it in letter when contact with us.
Also you can decrypt 1 file for test, its guarantee what we can decrypt your files.
Contact information:
primary email: decryptsupport@protonmail.com
reserve email: decryptsupport1@cock.li

Screenshot of Hermes 2.1 ransomware process in Windows Task Manager:

Hermes 2.1 ransomware in task manager

Screenshot of spam email distributing malicious attachments that download/install Hermes 2.1:

Email spam used to distribute Hermes 2.1 ransomware

Text presented in this email:

Subject: Job Application
How's it going?
My name is Britney and I'm interested in a job.
I've attached a copy of my resume.
The password is 321
Thank you!
Britney

Screenshot of the malicious attachment (MS Word document) that downloads and installs Hermes 2.1 ransomware:

Malicious attachment that downloads and installs Hermes 2.1

Text presented in this attachment:

PROTECTED DOCUMENT
CAN’T VEIW? MICROSOFT RECOMMENDS THE BELOW STEPS

1. Open the document in MS Office. Previewing online does not work for protected documents.
2. Use a PC/Desktop. Protected document doesn’t work on a mobile phone.
3. Since you have downloaded this document Online, you will need to click “Enable Editing” or “Enable Macro” and then click “Enable Content” on the yellow bar, which may be shown to you.

Screenshot of files encrypted by Hermes 2.1 (no extension):

Files encrypted by Hermes 2.1

Update June 19, 2019 - Cyber criminals have recently released an updated variant of Hermes 2.1 ransomware. The entire ransom note is exactly the same, yet the updated variant is designed to append filenames with  "[caspers@scryptmail.com].HRM" extension (e.g., "sample.jpg" would be renamed to "sample.jpg[caspers@scryptmail.com.HRM").

Screenshot of files encrypted by the updated Hermes 2.1 ransomware:

Hermes 2.1 ransomware encrypted files

Screenshot of updated Hermes 2.1 ransomware's process ("Vh Pal Dod") in Windows Task Manager:

Hermes 2.1 ransomware process in Windows Task Manager

Update November 13, 2019 - Crooks have released yet another variant of Hermes 2.1 ransomware which provides a different email address ("supportdecrypt@firemail.cc"). Everything else is completely the same.

Hermes 2.1 ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

Isolating the infected device:

Some ransomware-type infections are designed to encrypt files within external storage devices, infect them, and even spread throughout the entire local network. For this reason, it is very important to isolate the infected device (computer) as soon as possible.

Step 1: Disconnect from the internet.

The easiest way to disconnect a computer from the internet is to unplug the Ethernet cable from the motherboard, however, some devices are connected via a wireless network and for some users (especially those who are not particularly tech-savvy), disconnecting cables may seem troublesome. Therefore, you can also disconnect the system manually via Control Panel:

Navigate to the "Control Panel", click the search bar in the upper-right corner of the screen, enter "Network and Sharing Center" and select search result: Disconnecting computer from the Internet (step 1)

Click the "Change adapter settings" option in the upper-left corner of the window: Disconnecting computer from the Internet (step 2)

Right-click on each connection point and select "Disable". Once disabled, the system will no longer be connected to the internet. To re-enable the connection points, simply right-click again and select "Enable". Disconnecting computer from the Internet (step 3)

Step 2: Unplug all storage devices.

As mentioned above, ransomware might encrypt data and infiltrate all storage devices that are connected to the computer. For this reason, all external storage devices (flash drives, portable hard drives, etc.) should be disconnected immediately, however, we strongly advise you to eject each device before disconnecting to prevent data corruption:

Navigate to "My Computer", right-click on each connected device and select "Eject": Ejecting external storage devices

Step 3: Log-out of cloud storage accounts.

Some ransomware-type might be able to hijack software that handles data stored within "the Cloud". Therefore, the data could be corrupted/encrypted. For this reason, you should log-out of all cloud storage accounts within browsers and other related software. You should also consider temporarily uninstalling the cloud-management software until the infection is completely removed.

Identify the ransomware infection:

To properly handle an infection, one must first identify it. Some ransomware infections use ransom-demand messages as an introduction (see the WALDO ransomware text file below).

Identify ransomware-type infection (step 1)

This, however, is rare. In most cases, ransomware infections deliver more direct messages simply stating that data is encrypted and that victims must pay some sort of ransom. Note that ransomware-type infections typically generate messages with different file names (for example, "_readme.txt", "READ-ME.txt", "DECRYPTION_INSTRUCTIONS.txt", "DECRYPT_FILES.html", etc.). Therefore, using the name of a ransom message may seem like a good way to identify the infection. The problem is that most of these names are generic and some infections use the same names, even though the delivered messages are different and the infections themselves are unrelated. Therefore, using the message filename alone can be ineffective and even lead to permanent data loss (for example, by attempting to decrypt data using tools designed for different ransomware infections, users are likely to end up permanently damaging files and decryption will no longer be possible even with the correct tool).

Another way to identify a ransomware infection is to check the file extension, which is appended to each encrypted file. Ransomware infections are often named by the extensions they append (see files encrypted by Qewe ransomware below).

Identify ransomware-type infection (step 2)

This method is only effective, however, when the appended extension is unique - many ransomware infections append a generic extension (for example, ".encrypted", ".enc", ".crypted", ".locked", etc.). In these cases, identifying ransomware by its appended extension becomes impossible.

One of the easiest and quickest ways to identify a ransomware infection is to use the ID Ransomware website. This service supports most existing ransomware infections. Victims simply upload a ransom message and/or one encrypted file (we advise you to upload both if possible).

Identify ransomware-type infection (step 3)

The ransomware will be identified within seconds and you will be provided with various details, such as the name of the malware family to which the infection belongs, whether it is decryptable, and so on.

Example 1 (Qewe [Stop/Djvu] ransomware):

Identify ransomware-type infection (step 4)

Example 2 (.iso [Phobos] ransomware):

Identify ransomware-type infection (step 5)

If your data happens to be encrypted by a ransomware that is not supported by ID Ransomware, you can always try searching the internet by using certain keywords (for example, ransom message title, file extension, provided contact emails, cryptowallet addresses, etc.).

Search for ransomware decryption tools:

Encryption algorithms used by most ransomware-type infections are extremely sophisticated and, if the encryption is performed properly, only the developer is capable of restoring data. This is because decryption requires a specific key, which is generated during the encryption. Restoring data without the key is impossible. In most cases, cyber criminals store keys on a remote server, rather than using the infected machine as a host. Dharma (CrySis), Phobos, and other families of high-end ransomware infections are virtually flawless, and thus restoring data encrypted without the developers' involvement is simply impossible. Despite this, there are dozens of ransomware-type infections that are poorly developed and contain a number of flaws (for example, the use of identical encryption/decryption keys for each victim, keys stored locally, etc.). Therefore, always check for available decryption tools for any ransomware that infiltrates your computer.

Finding the correct decryption tool on the internet can be very frustrating. For this reason, we recommend that you use the No More Ransom Project and this is where identifying the ransomware infection is useful. The No More Ransom Project website contains a "Decryption Tools" section with a search bar. Enter the name of the identified ransomware, and all available decryptors (if there are any) will be listed.

Searching for ransomware decryption tools in nomoreransom.org website

Restore files with data recovery tools:

Depending on the situation (quality of ransomware infection, type of encryption algorithm used, etc.), restoring data with certain third-party tools might be possible. Therefore, we advise you to use EaseUS Data Recovery Wizard Pro. This tool supports over a thousand data types (graphics, video, audio, documents, etc.) and it is very intuitive (little knowledge is necessary to recover data).

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EaseUS Data Recovery Wizard Pro

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Step 1: Perform a scan.

Hover your mouse over the partition you wish to scan and select "Scan". You can also select a specific folder, or click shortcut icons to scan the Desktop or Recycle Bin: Scanning the storage drive with EaseUS Data Recovery Wizard PRO (step 1)

Wait for EaseUS Data Recovery Wizard Pro to complete the scan. The scanning duration depends on the volume of files (both in quantity and size) that you are scanning (for example, several hundreds gigabytes could take over an hour to scan). Therefore, be patient during the scanning process. We also advise against modifying or deleting existing files, since this might interfere with the scan. If you add additional data (for example, downloading files/content) while scanning, this will prolong the process: Scanning the storage drive with EaseUS Data Recovery Wizard PRO (step 2)

Step 2: Recover data.

Once the process is complete, select the folders/files you wish to restore and simply click "Recover". Note that some free space on your storage drive is necessary to restore data. Note also that the trial version of EaseUS Data Recovery Wizard Pro is only capable of scanning drives and listing recoverable files - to restore them, you must purchase a license: Recovering data with EaseUS Data Recovery Wizard Pro

Step 3: Save the scan session (optional).

We recommend that you save the scanning session once you have completed recovery, in case you decide to recover additional files later. Simply click the "Save Scan Session" icon in the upper-right corner of the screen and choose the location for the file to be saved. This will save a lot of time, since you will not need to re-scan the storage drive the next time you wish to restore something. Bear in mind, however, that data removed after the scanning session has finished will not be listed: Saving scan session in EaseUS Data Recovery Wizard Pro

Create data backups:

Proper file management and creating backups is essential for data security. Therefore, always be very careful and think ahead.

Partition management: We recommend that you store your data in multiple partitions and avoid storing important files within the partition that contains the entire operating system. If you fall into a situation whereby you cannot boot the system and are forced to format the disk on which the operating system is installed (in most cases, this is where malware infections hide), you will lose all data stored within that drive. This is the advantage of having multiple partitions: if you have the entire storage device assigned to a single partition, you will be forced to delete everything, however, creating multiple partitions and allocating the data properly allows you to prevent such problems. You can easily format a single partition without affecting the others - therefore, one will be cleaned and the others will remain untouched, and your data will be saved. Managing partitions is quite simple and you can find all necessary information on Microsoft's documentation web page.

Data backups: The most reliable backup method is to use an external storage device and keep it unplugged. Copy your data to an external hard drive, flash (thumb) drive, SSD, HDD, or any other storage device, unplug it and store it in a dry place away from sun and extreme temperatures. This method is, however, quite inefficient, since data backups and updates need to be made regularly. You can also use a cloud service or remote server. Here, an internet connection is required and there is always the chance of a security breach. Therefore, you should consider using an application to create data backups locally.

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EaseUS Todo Backup

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We recommend using the EaseUS Todo Backup application. The "Home" edition of EaseUS Todo Backup is usually more than adequate for regular users, however, the "Business" edition is more suitable for companies and large computer networks. The EaseUS Todo Backup application provides extensive data protection features. You can easily create backups, and encrypt and compress them for enhanced protection and storage saving purposes. It also allows you to set backup schedules, create bootable devices, and restore the system if a crash occurs. You can easily choose where to store the created backup: locally; uploaded to an external drive; FTP; cloud storage, or elsewhere. In summary, EaseUS Todo Backup is an all-in-one tool, which provides all features required to properly backup your data.

Creating a data backup:

The backup process is virtually identical regardless of the item (file, partition, entire system) you wish to backup. Taking the File Backup feature as an example:

Step 1: Choose which item to backup.

Click on the "Menu" icon in the upper-left corner of the screen to reveal the menu and select "File Backup": Creating data backups with EaseUS Todo Backup tool (step 1)

Select the files you want to backup. You can also enter a name and description of the backup that will be created: Creating data backups with EaseUS Todo Backup tool (step 2)

Step 2: Change the default settings.

The EaseUS Todo Backup application provides a variety of additional options that can be added/modified while creating the backup. For example, you can encrypt data (add a password), select the compression rate (how much the backup should be compressed), performance (how many system resources should be allocated), add an email notification (you receive an email once the process is complete) and so on.

To open the options window, click the "Backup options" button in the lower-left corner of the screen: Creating data backups with EaseUS Todo Backup tool (step 3)

Select the settings you want to change and click "Save". You can also reset your changes by clicking "Reset to initial settings": Creating data backups with EaseUS Todo Backup tool (step 4)

Step 3: Select the backup destination.

As mentioned above, EaseUS Todo Backup allows you to choose where backups are saved - locally or externally.

Click the "Browse..." button and select the location you want the backup to be saved: Creating data backups with EaseUS Todo Backup tool (step 5)

Step 4: Safety measures and process completion.

Depending on the location you have chosen, there are a number of measures you should or should not take. If you are uploading to an internet-connected location (for example, Cloud storage, FTP, etc.), be sure to maintain your internet connection, otherwise you will have to start again. The same applies to external storage devices - do not unplug them until the process is complete.

The progress bar displays estimated time remaining until completion. Large backups (hundreds of gigabytes) can take hours to create (depending on storage device speed, internet connection, etc.). Therefore, the application also allows you to optionally choose what the system should do (shut down, sleep or hibernate) once the process has finished: Creating data backups with EaseUS Todo Backup tool (step 6)

The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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Hermes 2.1 virus QR code
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