Ransomware Research
About GandCrab-4
GandCrab-4
GandCrab-4 was first discovered in July 2018 in enterprise cloud environments.
| Name | GandCrab-4 |
|---|---|
| First Seen | July 2018 |
Genealogy
To better understand GandCrab-4, we can trace it’s origins. Below is a snapshot of GandCrab-4’s genealogy.
| GandCrab » GandCrab-2 » GandCrab-3 » GandCrab-4 » GandCrab-5 |
Targeting
Behavior of GandCrab-4
GandCrab-4 is known to target specific file types. Below are all known file types that GandCrab-4 is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. GandCrab-4 updates the last modified date of the file it targets.
Learn More
Characteristics of GandCrab-4
Here are some of the unique characteristics that are helpful to know about GandCrab-4.
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 GandCrab-4 ransomware is known to change.
| Suffixes | .KRAB |
|---|
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 GandCrab-4.
| Type | file |
|---|---|
| File Name | KRAB-DECRYPT.txt |
| Location | EveryFolder |
Executables
These are the names of the executables that contain the undetonated ransomware payload for GandCrab-4.
| Executables | Crack_Ghost_Mouse_Auto_Clicker.exe, GandCrab-v4.exe, 1.pdf, 1.exe, Gandcrab4 (2).exe, application.exe, Q79IB0PW.exe, YPV4TB4Y.exe, myfile.exe, psy.exe, UJ7KDMOH.exe, U8PRLIKT.exe, G10NgAkT, not_a_virus.dll, new.exe, new.bin.exe, grancrab.exe, myfile.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 GandCrab-4.
| External Pages |
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How Elastio can help
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