Ransomware Research

RedRum

RedRum was first discovered in December 2019 in enterprise cloud environments. RedRum is found in environments with a number of different names, including RedRum, Grinch, Thanos, Tycoon, etc. For a full list of all names, please see below.

Name

RedRum

 

First Seen

December 2019

Targeting

Behavior of RedRum

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

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

Details

Characteristics of RedRum

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 RedRum ransomware is known to change.

Suffixes

.redrum, .grinch, .thanos, .groove, .eruption, .magneto

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 RedRum.

Type

File Name

Location

file

decryption.txt

EveryFolder

Executables

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

Executables

program.exe, Local Security Authority Process1.exe, Local Security Authority Process1.zip

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 RedRum.

External Pages

  • mailto:moncler@tutamail.com
  • mailto:moncler@cock.li
  • mailto:pay4dec@cock.lu
  • mailto:ppp4ddd@protonmail.com
  • mailto:dataissafe@protonmail.com
  • mailto:dataissafe@mail.com
  • mailto:foxbit@tutanota.com
  • mailto:relaxmate@protonmail.com
  • mailto:crocodelux@mail.ru
  • mailto:savecopy@cock.li
  • mailto:bazooka@cock.li
  • mailto:funtik@tutamail.com
  • mailto:mariarti@protonmail.com
  • mailto:eruption.decryption@mail.ru
  • mailto:decryption@mail.ru

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