Ransomware Research

HelloKitty

HelloKitty was first discovered in October 2020 in enterprise cloud environments. HelloKitty is found in environments with a number of different names, including Kitty, etc. For a full list of all names, please see below.

Name

HelloKitty

 

First Seen

October 2020

Targeting

Behavior of HelloKitty

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

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

Details

Characteristics of HelloKitty

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 HelloKitty ransomware is known to change.

Suffixes

.crypted, .kitty, .crypt, .v-society, .boombye

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 HelloKitty.

Type

File Name

Location

file

read_me_lkdtt.txt

EveryFolder

file

read_me_lkd.txt

EveryFolder

file

read_me_unlock.txt

EveryFolder

file

_read_me_bro.txt

EveryFolder

Executables

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

Executables

ag.exe, ransomware.Exe, Trojan.Ransom.HelloKitty.exe, ls.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 HelloKitty.

External Pages

  • http://6x7dp6h3w6q3ugjv4yv5gycj3femb24kysgry5b44hhgfwc5ml5qrdad.onion
  • http://uqudwxzszbcj6uxbhbdccmixvwjfewn565ifotzvcbbimsjjcczsvpyd.onion
  • mailto:circetsupport@secmail.pro

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