fileRead Me.txt
notes/Read Me.txt
Location: EveryFolder
Ransomware Research
BigBobRoss Ransomware
BigBobRoss is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Obfuscated, Cheetah.
Quick facts
- Ransomware Family
- BigBobRoss
- First Seen
- January 1, 2019
- Known Aliases
- Obfuscated
- Cheetah
How BigBobRoss ransomware works
File modification behavior
BigBobRoss updates file modification timestamps after encryption.
File encryption patterns
BigBobRoss modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .obfuscated
- .encryptedALL
- .djvu
- .cheetah
- .encrypted
Ransom note and payment demands
After encrypting files, BigBobRoss displays ransom notes demanding payment for file recovery:
fileHow to recover your files.txt
notes/How to recover your files.txt
Location: EveryFolder
fileHow to recover your files.url
notes/How to recover your files.url
Location: EveryFolder
fileEncrypt Message.txt
notes/Encrypt Message.txt
Technical indicators
Associated executable files
The following executable files are associated with BigBobRoss ransomware:
- BigBobRoss.exe
- test.exe
- bedoneupx.exe
- Obfuscated.exe
- encrypterXD.exe
- System.exe
- windows64bit.exe
Recovery and decryption tools
Decryption tools may be available for BigBobRoss. Review the resources below:
About this analysis
This BigBobRoss ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like BigBobRoss.
Detection coverage
Elastio detects BigBobRoss inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify BigBobRoss across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.