Ransomware Research

RekenSom

RekenSom was first discovered in March 2020 in enterprise cloud environments. RekenSom is found in environments with a number of different names, including Som, GHack, etc. For a full list of all names, please see below.

Name

RekenSom

 

First Seen

March 2020

Targeting

Behavior of RekenSom

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

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

Details

Characteristics of RekenSom

Suffixes

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 RekenSom ransomware is known to change.

Suffixes

.RekenSom, .som

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 RekenSom.

Type

File Name

Location

message

Login

Executables

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

Executables

WindowsFormsApplication8.exe, FinalReken.exe, GHack.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 RekenSom.

External Pages

  • telegram:@Rekensom

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