Ransomware Research

About Bug


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

Name Bug
  • Bugo
First Seen April 2020

Behavior of Bug

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

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

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Characteristics of Bug

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


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 Bug ransomware is known to change.


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 Bug.

File NameRead_Bug.html

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 Bug.

External Pages
  • mailto:bugbugo@protonmail.com
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