Ransomware Research

About Avaddon


Avaddon was first discovered in June 2020 in enterprise cloud environments. Avaddon is found in environments with a number of different names, including Avaddon Doxware, etc. For a full list of all names, please see below.

Name Avaddon
  • Avaddon Doxware
First Seen June 2020

Behavior of Avaddon

Avaddon is known to target specific file types. Below are all known file types that Avaddon is known to infect.

In some cases, ransomware will update the modified date, when it encrypts files. Avaddon updates the last modified date of the file it targets.

Learn More

Characteristics of Avaddon

Here are some of the unique characteristics that are helpful to know about Avaddon.


Some ransomware will change or append a suffix to the end of the file after they are encrypted, including changing the extension of a file. Here are some of the possible suffixes that Avaddon ransomware is known to change.

Suffixes.avdn, /.[A-Ea-e0-9]{10}$/

Ransomware Notes

Not all ransomware leaves a note. However, some ransomware leaves the infected party instructions on what the user should do to get rid of the ransomware, or satisfy the ransom. This often involves transferring money, often bitcoin or another cryptocurrency to a designated wallet.

Below are the type(s) of notes, content, and typical locations where Elastio has found ransom notes from Avaddon.

File Namereadme.html
File Name/^[A-Za-z0-9]{2,8}_readme_?.txt$/


These are the names of the executables that contain the undetonated ransomware payload for Avaddon.

Executablessava.bin, software.exe, Avaddon_09_06_2020_1054KB.exe, file.exe, program.exe, executable.exe, old.exe, sava.exe, jpr.exe, old.bin, img05960602020-jpg.scr, temp27472466.exe, 5737263.exe, vget.exe, vnget.exe, 5203508738.exe, 646246465.exe, 647274456.exe, 6247427.exe, 237502353.exe, taskhost.exe, wtava_1.exe, tava_1.exe, tava.exe, wtava.exe, tspm.exe, 4939394.exe, 7865336.exe, 75365357.exe, temp377346.exe, 05750050.exe, 5893938.exe, taskhost.pe32, 58839304.exe, bit4bc0.tmp, sample.pe32, lkx999.exe, senddebuglog, SendDebugLog.exe, 1.exe, QkpxnTb.exe, BUIRansomSample.exe, rdp.exe, rdp.bin.exe

External Pages

Ransomware often links to external pages such as payment pages, telegram contacts, etc. Below are some of the URLs Elastio has found to be associated with Avaddon.

External Pages
  • http://avaddonbotrxmuyl.onion
  • http://avaddongun7rngel.onion
How Elastio can help

Don’t let ransomware
take over your data.

Elastio is a cloud-native data resilience platform on AWS, providing robust security and assuring the recoverability of critical data in cloud environments.

Elastio protects data from ransomware and malware evading perimeter defenses and mitigates downtime, data loss, and reputational harm for businesses.

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