Type
File Name
Location
Z3 was first discovered in August 2020 in enterprise cloud environments. Z3 is found in environments with a number of different names, including Z3enc, etc. For a full list of all names, please see below.
Name
Z3
First Seen
August 2020
Z3 is known to target specific file types. Below are all known file types that Z3 is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. Z3 updates the last modified date of the file it targets.
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 Z3 ransomware is known to change.
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 Z3.
Type File Name Location file {origin_filename}.z3enc EveryFile message Login
These are the names of the executables that contain the undetonated ransomware payload for Z3.
Executables
z3.exe, 5fv5sgbg.mhk.exe
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 Z3.
