Bitpaymer Ransomware
Bitpaymer is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: WPEncrypt, FriedEx, Bitpaymer NextGen.
Quick facts
How Bitpaymer ransomware works
File encryption patterns
Bitpaymer modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Bitpaymer displays ransom notes demanding payment for file recovery:
notes/DOC1.docx.readme_txt
notes/descript.ion.lmtgr0up_readme
notes/HOW_TO_DECRYPT.txt
Technical indicators
Associated executable files
The following executable files are associated with Bitpaymer ransomware:
- apisetstub
- mafgvag
- Xrj.exe
- yZj:exe
- 0Wk7JMR:exe
- AFPtT:exe
- SjwFY.exe
- 3IkZZ0:exe
- ZZi2x:exe
- 841913.exe
- Bit Paymer.exe
- BitPaymer.exe
- Ransomware 1.exe
- DUe1bLM.exe
- 5MgqQ.exe
- EqMz:exe
- YpoiVa:exe
- U7zj:exe
- NlsData081a
- NlsData081a.dll
- 2EwLi.exe
- NONLMB~1.EXE
- W0MJTB~1.locked:bin
- TieringEngineService.exe
- 3AQAQH~1:bin
- BAG9LA~1.EXE
- mzj8Si:bin
- N6F1OD~1.EXE
- VMNRG2~1:bin
- WASpotLife.DLL
- msdtc.exe
- 2PMa:exe
- PrkgN:exe
- Fqj9g5v:exe
- 351:exe
- 4RnuBxi:exe
About this analysis
This Bitpaymer 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 Bitpaymer.
Last updated: December 30, 2025
Elastio detects Bitpaymer inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Bitpaymer 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.
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