Ransomware Research

DEcovid19 Ransomware

DEcovid19 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Covid19, BitchLock, Noputana, RapidRunDll.

Quick Facts

Ransomware Family
DEcovid19
First Seen
January 1, 2021
Known Aliases
Covid19BitchLockNoputanaRapidRunDll

How DEcovid19 Ransomware Works

File Encryption Patterns

DEcovid19 modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..covid19..bitchlock..lock..bumcoder..snoopdog..locked

Ransom Note and Payment Demands

After encrypting files, DEcovid19 displays ransom notes demanding payment for file recovery:

file!DECRYPT_FILES.txt

Ransom message:

notes/!DECRYPT_FILES.txt

Note locations:

EveryFolder
file!!!_FILES_RECOVERY.txt

Ransom message:

notes/!!!_FILES_RECOVERY.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with DEcovid19 ransomware:

  • svchost.com
  • svchost1.com
  • MSOHTMED.EXE
  • neshta.bin
  • wininst-9.0.exe
  • LogTransport2.exe
  • Au3Check.exe
  • wow_helper.exe
  • pingsender.exe
  • AcroTextExtractor.exe
  • kEpEnQq
  • upx.exe
  • maintenanceservice.exe
  • svchost
  • SVCHOST.COM
  • 980bac6c9afe8efc_svchost.com
  • svchost.com.2992.dr
  • Neshta (2)
  • neshta_pure
  • avz00001.dta
  • svchost002.exe
  • d5c7b2e1fee30939f6de4ad22f6fcc3d_svchost.com.safe
  • ooo.com
  • file-4065521_dta
  • нешта.dta
  • WzHHHWUW.exe
  • FTS.bin
  • noputana.exe
  • FTS.bin.exe
  • RunAsDll.exe
  • FileLocker.bin

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About This Analysis

This DEcovid19 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 DEcovid19.

Last updated: October 30, 2025

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