Ransomware Research

About 05250lock


05250lock was first discovered in January 2020 in enterprise cloud environments. 05250lock is found in environments with a number of different names, including NuBe, etc. For a full list of all names, please see below.

Name 05250lock
  • NuBe
First Seen January 2020


To better understand 05250lock, we can trace it’s origins. Below is a snapshot of 05250lock’s genealogy.

Dharma » 05250lock

Behavior of 05250lock

05250lock is known to target specific file types. Below are all known file types that 05250lock is known to infect.

In some cases, ransomware will update the modified date, when it encrypts files. 05250lock updates the last modified date of the file it targets.

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Characteristics of 05250lock

Here are some of the unique characteristics that are helpful to know about 05250lock.


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 05250lock ransomware is known to change.


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 05250lock.

File Name/^[A-Z0-9]{8}-FILES ENCRYPTED.txt$/
File Name/^CLICK_HERE-[a-z]{4,5}.txt$/

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 05250lock.

External Pages
  • mailto:05250lock@tutamail.com
  • mailto:05250lock@protonmail.com
  • mailto:05250lock@tut.com
  • mailto:grdoks@tutanota.com
  • mailto:dweezells@airmail.cc
  • mailto:krastoken@gmail.com
  • mailto:hudsonamily@gmail.com
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