Ransomware Research

YE1337 Ransomware

YE1337 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
YE1337
First Seen
January 1, 2025

How YE1337 ransomware works

File modification behavior

YE1337 updates file modification timestamps after encryption.

File encryption patterns

YE1337 modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
  • .YE1337

Ransom note and payment demands

After encrypting files, YE1337 displays ransom notes demanding payment for file recovery:

fileYE1337_read_me.txt
notes/YE1337_read_me.txt

Location: EveryFolder

screenshot
notes/z3esw42im.jpg

Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with YE1337 ransomware:

  • svchost.exe
  • sadasdasdddddddddddddddddddddddddd.exe
  • YE1337.exe

About this analysis

This YE1337 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 YE1337.

Last updated: January 15, 2025

Detection coverage

Elastio detects YE1337 inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify YE1337 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.