Ransomware Research

Scarab-Osk

Scarab-Osk was first discovered in May 2018 in enterprise cloud environments. Scarab-Osk is found in environments with a number of different names, including Scarab-Osk-Cosmos, Scarab-Osk-Frogo, etc. For a full list of all names, please see below.

Name

Scarab-Osk

 

First Seen

May 2018

Targeting

Behavior of Scarab-Osk

Scarab-Osk is known to target specific file types. Below are all known file types that Scarab-Osk is known to infect.

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

Details

Characteristics of Scarab-Osk

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 Scarab-Osk ransomware is known to change.

Suffixes

.cosmos, .frogo, .osk

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 Scarab-Osk.

Type

File Name

Location

file

HOW TO RECOVER ENCRYPTED FILES.TXT

EveryFolder

Executables

These are the names of the executables that contain the undetonated ransomware payload for Scarab-Osk.

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 Scarab-Osk.

External Pages

  • mailto:translatos@protonmail.com
  • mailto:mark.support@protonmail.com
  • mailto:my_frends@india.com
  • mailto:my_frend@protonmail.com
  • bitmessage:BM-2cUvL7bCPmMZc7QonNfrdLQesmpxX9Sr53

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