Ransomware Research

Jigsaw Ransomware

Jigsaw is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Jigsaw
First Seen
November 1, 2017

How Jigsaw Ransomware Works

Targeted Files

fdfb72874c3c1761475cbc23a51cbe422d09c8b6dcbdfb93f936adb56f23bcf5 - 100% working sample

File Encryption Patterns

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

File extensions added after encryption:

..####CONTACT_US_pablukl0cker638yzhgr@2tor.com####..FUCKMEDADDY..CryptWalker..LOCKED_by_pablukl0cker_ransomware!..LOCKED_BY_pablukl0cker..#..justice..locked..contact-me-here-for-the-key-admin@adsoleware.com..Bitconnect..jes..email-[powerhacker03@hotmail.com].koreaGame..fun..onion..LolSec..booknish..choda..coder007@protonmail.com..##___POLICJA!!!___TEN_PLIK_ZOSTA..black007..invaded..tedcrypt..hacked.by.Snaiparul..lockedgood..pleaseCallQQ..#__EnCrYpTED_BY_dzikusssT3AM_ransomware!__#..FuckedByGhost..data..venom..YOLO..paycoin..LOCKED_PAY..exe..zemblax..btc..homer..evil..cat..HYDRA..pennywise..v315..hac..PAY..zapium

Ransom Note and Payment Demands

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

fileAddress.txt

Ransom message:

notes/Address.txt

Note locations:

Desktop
message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion

Technical Indicators

Associated Executable Files

The following executable files are associated with Jigsaw ransomware:

  • LoL VIP RP HACK 4.0.exe
  • MicrosoftWordUpdate.exe
  • BIG DADDY COCK.exe
  • BitcoinBlackMailer.exe
  • ACCOUNTDETAILS.EXE
  • Ransome.exe
  • Google Chrome.exe
  • a.exe
  • mada.exe
  • Setup_install.exe
  • Genel Maliyetler.exe
  • Firefox.exe
  • firefox.exe
  • Xbox-One-Mod-Menu.exe
  • JigsawRansomware.exe
  • Carlos Matos.exe
  • GetFacebookPasswordV2.exe
  • Chrome.exe
  • BitcoinBlackmailer.exe
  • jigsaw_encrypted.exe
  • tool pour lobby.exe
  • BitcoinStealer.exe
  • invoice.exe
  • 19000818.exe
  • acrord32.exe
  • ApophisRansomware.exe
  • drpbx.exe
  • ween.exe
  • ween ransomware.exe
  • svchost.exe
  • 초다 랜섬웨어.exe
  • Jigsaw_choda Ransomware.exe
  • v2.exe
  • JIGSAW_DZIALAJACY!!!-.exe
  • NaziEdit.exe
  • BitcoinGenerator.exe
  • Mic.exe
  • net.exe
  • Ghost.exe
  • molotov.exe
  • OscarRansomware.exe
  • Oscar Ransomware.exe
  • Chrome_Installer.exe
  • Jigsaw.exe
  • EMAIL_CRACKER.EXE
  • zzzzz.exe
  • Isass.exe
  • isass.exe
  • firefox.rar
  • Invert.exe
  • Dolf.exe
  • java.exe
  • Chrome32.exe

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About This Analysis

This Jigsaw 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 Jigsaw.

Last updated: July 30, 2025

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