Ransomware Research
About Nemty
Nemty
Nemty was first discovered in August 2019 in enterprise cloud environments. Nemty is found in environments with a number of different names, including Nemty, Nemty Revenge 2.0, Nemty Doxware, etc. For a full list of all names, please see below.
| Name | Nemty |
|---|---|
| AKA |
|
| First Seen | August 2019 |
Genealogy
To better understand Nemty, we can trace it’s origins. Below is a snapshot of Nemty’s genealogy.
| JSWorm » Nemty,Nemty 2.0 » Nefilim » KarmaCypher » KARMA_V2 |
Targeting
Behavior of Nemty
Nemty is known to target specific file types. Below are all known file types that Nemty is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. Nemty updates the last modified date of the file it targets.
Learn More
Characteristics of Nemty
Here are some of the unique characteristics that are helpful to know about Nemty.
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 Nemty ransomware is known to change.
| Suffixes | .nemty, /._NEMTY_[a-zA-Z0-9]{7}_$/ |
|---|
Ransomware Notes
Not all ransomware leaves a note. However, some ransomware leaves the infected party instructions on what the user should do to get rid of the ransomware, or satisfy the ransom. This often involves transferring money, often bitcoin or another cryptocurrency to a designated wallet.
Below are the type(s) of notes, content, and typical locations where Elastio has found ransom notes from Nemty.
| Type | file |
|---|---|
| File Name | NEMTY-DECRYPT.txt |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | /^_NEMTY_[a-zA-Z0-9]{7}_-DECRYPT.txt$/ |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | /^NEMTY_[a-zA-Z0-9]{7}-DECRYPT.txt$/ |
| Location | EveryFolder |
| Type | screenshot |
|---|---|
| Location | Desktop |
Executables
These are the names of the executables that contain the undetonated ransomware payload for Nemty.
| Executables | 9eenGboYYNXbTO5.exe, Decryptor.exe, Cashback.exe, Cashback.bin, D3BMN70B.exe, 2c41b93add9ac508_ironman.exe, ironman.exe, $RJD3Z6K.TMP, 부당 전자상거래 위반행위 안내.hwp, 이력서_200506(뽑아주시면 최선을 다해서 열심히 하겠습니다)1.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 Nemty.
| External Pages |
|
|---|
Available Decryptors for Nemty
Decryptors help to decrypt the infected ransomware files. Below are the known decryptors for files that have been infected by Nemty.
If there are any known decryptors for this ransomware, they are linked here.
| Name | Nemty decryptor |
|---|---|
| URL | https://www.bleepingcomputer.com/news/security/nemty-ransomware-decryptor-released-recover-files-for-free/ |
How Elastio can help
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