Ransomware Research
CatB Ransomware
CatB is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2022, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: FishA, CatFish, FishCat, Fish-Cat, FishA-CatB.
Quick Facts
- Ransomware Family
- CatB
- First Seen
- November 1, 2022
- Known Aliases
- FishACatFishFishCatFish-CatFishA-CatB
How CatB Ransomware Works
Targeted Files
Ransom note inserted in each encrypted file at start of the file
Technical Indicators
Associated Executable Files
The following executable files are associated with CatB ransomware:
svchosts.exeCatb-35a273df61f4506cdb286ecc40415efaa5797379b16d44c240e3ca44714f945b.dll1.dlloci.dllsvchosts
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About This Analysis
This CatB ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like CatB.
Last updated: July 30, 2025