Ransomware Research
About BlueSky
BlueSky
BlueSky was first discovered in June 2022 in enterprise cloud environments.
| Name | BlueSky |
|---|---|
| First Seen | June 2022 |
Genealogy
To better understand BlueSky, we can trace it’s origins. Below is a snapshot of BlueSky’s genealogy.
| Conti |
Targeting
Behavior of BlueSky
BlueSky is known to target specific file types. Below are all known file types that BlueSky is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. BlueSky updates the last modified date of the file it targets.
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Characteristics of BlueSky
Here are some of the unique characteristics that are helpful to know about BlueSky.
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 BlueSky ransomware is known to change.
| Suffixes | .bluesky |
|---|
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 BlueSky.
| Type | file |
|---|---|
| File Name | # DECRYPT FILES BLUESKY #.html |
| Location | EveryFolder |
| Type | file |
|---|---|
| File Name | # DECRYPT FILES BLUESKY #.txt |
| Location | EveryFolder |
Executables
These are the names of the executables that contain the undetonated ransomware payload for BlueSky.
| Executables | l.exe, javaw.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 BlueSky.
| External Pages |
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|---|
How Elastio can help
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Elastio is a cloud-native data resilience platform on AWS, providing robust security and assuring the recoverability of critical data in cloud environments.
Elastio protects data from ransomware and malware evading perimeter defenses and mitigates downtime, data loss, and reputational harm for businesses.