Ransomware Research

Apis Ransomware

Apis is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2021, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Apis
First Seen
June 1, 2021

How Apis ransomware works

File encryption patterns

Apis modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.apis

Ransom note and payment demands

After encrypting files, Apis displays ransom notes demanding payment for file recovery:

fileread_apis.txt
notes/read_apis.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Apis ransomware:

About this analysis

This Apis 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 Apis.

Last updated: December 30, 2025

Detection coverage

Elastio detects Apis inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Apis across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

See How the Hunt Engine WorksRequest a Demo

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What is Apis Ransomware? | Elastio