Ransomware Research

About Amnesia


Amnesia was first discovered in May 2017 in enterprise cloud environments.

Name Amnesia
First Seen May 2017


To better understand Amnesia, we can trace it’s origins. Below is a snapshot of Amnesia’s genealogy.

Globe Family » Amnesia

Behavior of Amnesia

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

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

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Characteristics of Amnesia

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


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 Amnesia ransomware is known to change.

Suffixes.amnesia, .@decrypt2017, .[Help244@Ya.RU].LOCKED, .CTB-Locker, .protomolecule@gmx.us, .@decrypt_files2017, .01, .02

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 Amnesia.



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

Executablesguide.exe, update.exe, Happier.exe, risk0805_d101_cr174.exe, bstarb.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 Amnesia.

External Pages
  • mailto:s1an1er111@protonmail.com
  • mailto:help244@ya.ru
  • mailto:locker@bitmessage.ch
  • mailto:infokey24@india.com
  • mailto:protomolecule@gmx.us
  • bitmessage:BM-2cVChsbUqL5H1nw98qrwbQkzdE1UqCs8nH
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