Ransomware Research

Cring

Cring was first discovered in December 2020 in enterprise cloud environments. Cring is found in environments with a number of different names, including Cring Hand, Crypt3r, etc. For a full list of all names, please see below.

Name

Cring

 

First Seen

December 2020

Targeting

Behavior of Cring

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

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

Details

Characteristics of Cring

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 Cring ransomware is known to change.

Suffixes

.cring, .RSA, .jpghosts, .phantom, .VnBeHa99y, .pay4it, .lldc, .locked, .sg-ghosts, .just4money

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 Cring.

Type

File Name

Location

file

deReadMe!!!.txt

Desktop

file

HOW_CAN_GET_FILES_BACK.txt

RootDiscs, Desktop

file

HOW_CAN_GET_FILES_BACK.rtf

RootDiscs, Desktop

file

HOW_CAN_RECOVERY.txt

Desktop

Executables

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

Executables

cring.exe, 848299.exe, SchoolPrject1.exe, Ghost.exe, Ghost-cleaned.exe!, Jpghosts.log, Pcest.bin

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 Cring.

External Pages

  • mailto:eternalnightmare@tutanota.com
  • mailto:qkhooks0708@protonmail.com
  • mailto:poolhackers@tutanota.com
  • mailto:shadowghosts@tutanota.com
  • mailto:fortihooks@protonmail.com
  • mailto:rsaecho@tutanota.com
  • mailto:securityaccounts@tutanota.com
  • mailto:brendasrivera@tutanota.com
  • mailto:takunoya@tutanota.com
  • mailto:etira@tutanota.com
  • mailto:JulioErick@tutanota.com
  • mailto:payorleak@cock.li
  • mailto:Just4money@TUTANOTA.COM

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