Overview

overview

10

Static

static

3

sub_8df9b346bf59.exe

windows10-2004-x64

10

sub_8df9b346bf59.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    96s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/05/2026, 01:27

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General

  • Target
    sub_8df9b346bf59.exe
  • Size 192KB
  • Sample260524-bt69ssdv5m
  • SHA256 8df9b346bf591629a9eb0bf9f32c545a1266873495ceec9ba990be1dd22b9aa9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
credential_accessdiscoverycontiransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\ProgramData\readme.txt

  • conti

Ransom Note
  • All of your files are currently encrypted by CONTI strain. As you know (if you don't - just "google it"), all of the data that has been encrypted by our software cannot be recovered by any means without contacting our team directly. If you try to use any additional recovery software - the files might be damaged, so if you are willing to try - try it on the data of the lowest value. To make sure that we REALLY CAN get your data back - we offer you to decrypt 2 random files completely free of charge. You can contact our team directly for further instructions through our website : TOR VERSION : (you should download and install TOR browser first https://torproject.org) http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/ HTTPS VERSION : https://contirecovery.best YOU SHOULD BE AWARE! Just in case, if you try to ignore us. We've downloaded a pack of your internal data and are ready to publish it on out news website if you do not respond. So it will be better for both sides if you contact us as soon as possible. ---BEGIN ID--- IWd26u6CrgKFL7Yt09BF8vCA8MdukmXKAJiM3sHuD705R9emijUuvWFXm91hgjQJ ---END ID---
URLs

  • http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

  • https://contirecovery.best

Signatures

  • Family: Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

    ransomwareconti
  • Renames multiple (9403) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

    credential_accessstealer
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops desktop.ini file(s) 30 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\sub_8df9b346bf59.exe
    "C:\Users\Admin\AppData\Local\Temp\sub_8df9b346bf59.exe"
    1⤵
    • Drops startup file
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{54B939A4-E6B3-481C-807A-D80C76442A99}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{54B939A4-E6B3-481C-807A-D80C76442A99}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1688
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5184

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        readme.txt
        • Path C:\ProgramData\readme.txt
        • Size 1KB
        • SHA256 3013ad03f0adb6cd02dcd5d9bbc969829b01dcd5437ffc358e966ad82ef2fd0e
        • MD5 SHA1 SHA512 TLSH
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