Ransomware Research

Conti-2 Ransomware

Conti-2 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Conti-3, IOCP, R3ADM3.

Quick Facts

Ransomware Family
Conti-2
First Seen
September 1, 2020
Known Aliases
Conti-3IOCPR3ADM3

How Conti-2 Ransomware Works

File Encryption Patterns

Conti-2 modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

./\.[A-Z]{5}/..TCGYX..QHCGS..KCWTT..FEALC

Ransom Note and Payment Demands

After encrypting files, Conti-2 displays ransom notes demanding payment for file recovery:

fileR3ADM3.txt

Ransom message:

notes/R3ADM3.txt

Note locations:

EveryFolder
filereadme.txt

Ransom message:

notes/readme.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with Conti-2 ransomware:

  • XColorPickerXPTest.exe
  • shortwave.exe
  • p.exe
  • locker.exe
  • RunWinDiff
  • RunWinDiff.EXE
  • CustomToolTipDemo.exe
  • cOzkxIznegrscYUzNiwVGtjnGrMGDzxO_locker.exe
  • transscroll
  • transscroll.EXE
  • FhT9TlmdvBiW2CPAQI6rUP48dGr8LvPqCRY41ySWIP47vQr2fXcUK8rtQrTsHJv1_locker.exe
  • 73bd8c2aa.exe
  • SelectDialogTest.exe
  • login.exe
  • grub55.exe
  • 49670-77078664b4bbfbe25be44004431c1a37.exe
  • 1.exe
  • tst.rar
  • cryptor.exe
  • MOSS.exe
  • EAGLE.dll
  • 731515.exe
  • 5FE77DB174A5206B5387E2B86255BD008966B44632925351D9B3983438004EB1 2
  • x86.dll
  • c.exe

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About This Analysis

This Conti-2 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 Conti-2.

Last updated: July 30, 2025

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