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 |
|
| 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.
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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.
| Type | file |
|---|---|
| File Name | README.txt |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | HOW_TO_RETURN_FILES.txt |
| Location | EveryFolder |
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 |
|
|---|
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