Ransomware Research
About Bitshifter
Bitshifter
Bitshifter was first discovered in July 2017 in enterprise cloud environments. Bitshifter is found in environments with a number of different names, including Gollum, etc. For a full list of all names, please see below.
| Name | Bitshifter |
|---|---|
| AKA |
|
| First Seen | July 2017 |
Genealogy
To better understand Bitshifter, we can trace it’s origins. Below is a snapshot of Bitshifter’s genealogy.
| Satan » Bitshifter » ApolloLocker, Winsecure |
Targeting
Behavior of Bitshifter
Bitshifter is known to target specific file types. Below are all known file types that Bitshifter is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. Bitshifter unknown the last modified date of the file it targets.
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Characteristics of Bitshifter
Here are some of the unique characteristics that are helpful to know about Bitshifter.
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 Bitshifter ransomware is known to change.
| Suffixes | .gollum |
|---|
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 Bitshifter.
| Type | file |
|---|---|
| File Name | ARE_YOU_WANNA_GET_YOUR_FILES_BACK.txt |
| Location |
Executables
These are the names of the executables that contain the undetonated ransomware payload for Bitshifter.
| Executables | launcher.exe, network.exe |
|---|
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