Ransomware Research
About CryptXXX
CryptXXX
CryptXXX was first discovered in April 2016 in enterprise cloud environments. CryptXXX is found in environments with a number of different names, including CryptXXX 2.0, etc. For a full list of all names, please see below.
| Name | CryptXXX |
|---|---|
| AKA |
|
| First Seen | April 2016 |
Targeting
Behavior of CryptXXX
CryptXXX is known to target specific file types. Below are all known file types that CryptXXX is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. CryptXXX resets the last modified date of the file it targets.
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Characteristics of CryptXXX
Here are some of the unique characteristics that are helpful to know about CryptXXX.
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 CryptXXX ransomware is known to change.
| Suffixes | .crypt |
|---|
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 CryptXXX.
| Type | file |
|---|---|
| File Name | !README.HTML |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | de_crypt_readme.txt |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | decrypt-instructions.txt |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | decrypt-instructions.html |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | decrypt-instructions.bmp |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | /^@[A-F0-9]{12}.html$/ |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | /^@[A-F0-9]{12}.txt$/ |
| Location | EveryFolder |
Executables
These are the names of the executables that contain the undetonated ransomware payload for CryptXXX.
| Executables | layouts.exe, adc0.tmp.dll, FILE_10.1, 3363.tmp.dll, FILE_0, rad30AF9.tmp.dll, rad24cd3.tmp.dll, rad5E0FA.tmp.dll |
|---|
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 CryptXXX.
| External Pages |
|
|---|
How Elastio can help
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