Ransomware Research

About CNH

CNH

CNH was first discovered in January 2021 in enterprise cloud environments. CNH is found in environments with a number of different names, including CNHelp, ChinaHelper, CNHelp, etc. For a full list of all names, please see below.

Name CNH
AKA
  • CNHelp
  • ChinaHelper
  • CNHelp
First Seen January 2021

Genealogy

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

Ransomnix » CNH
Targeting

Behavior of CNH

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

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

Learn More

Characteristics of CNH

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

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 CNH ransomware is known to change.

Suffixes.cnh, .cnhelp

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 CNH.

Typefile
File NameREADME.txt
LocationEveryFolder
Typefile
File NameHOW_TO_RETURN_FILES.txt
LocationEveryFolder

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 CNH.

External Pages
  • mailto:helper.china@aol.com
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