JobCrypter Ransomware
JobCrypter is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: JobCrypter NextGen: Die Hard 4.
Quick facts
How JobCrypter ransomware works
File encryption patterns
JobCrypter modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, JobCrypter displays ransom notes demanding payment for file recovery:
notes/ntuser.ini.css
Technical indicators
Associated executable files
The following executable files are associated with JobCrypter ransomware:
- FL.exe
- 20.exe
- JobCrypt.exe
- L o c k e r.exe
- ch.exe
- Opera
- 0806(23).exe
- 4125478471.exe
- Y76KVZT1.exe
- H3I8J627.exe
- 2 (3).exe
- 71T5ZZKM.exe
- myfile.exe
- 2.exe
- 216NTWLN.exe
- 2KYZYYVP.exe
- 2 (1).exe
- officiel.exe
- 784775471.exe
- succeeded.exe
- tredszer.exe
- ransomware_die_hard_4.exe
- 784578536.exe
- dotNET_Reactor.exe
- ERFFREEED.exe
- yokingg.exe
- yokingg.bin
- lokjhgfder.exe
About this analysis
This JobCrypter 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 JobCrypter.
Last updated: December 30, 2025
Elastio detects JobCrypter inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify JobCrypter 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.
Recent ransomware
Explore other threats in our database