Overview

overview

10

Static

static

lockisdog.exe

windows7_x64

10

lockisdog.exe

windows10_x64

8

Analysis

  • max time kernel
    152s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-en-20210916
  • submitted
    17/09/2021, 07:03

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General

  • Target

    lockisdog.exe

  • Size

    53KB

  • MD5

    58c8c8c3038a5fbca2202248a1101da0

  • SHA1

    d07e81d55f9fbc7702efb28ba2a37b855cb1cfbe

  • SHA256

    71e3fce98a6436cf6a771732e9556106a071d86236f752d4540f669bef058f9c

  • SHA512

    4ff4fb70971de46ea55e7f792760dc3bdb60912f537e5f201a05f070a0b09e82d6d3ca11389fa455e49702a44875d8423f49d0e31a543f480d71a9acb13bd3a7

Score
10/10
medusalockerpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\how_to_back_files.html

Family

medusalocker

Ransom Note
Your personal ID: ����������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ll your important files have been encrypted! Your files are safe! Only modified. (RSA+AES) ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE WILL PERMANENTLY CORRUPT IT. DO NOT MODIFY ENCRYPTED FILES. DO NOT RENAME ENCRYPTED FILES. No software available on internet can help you. We are the only ones able to solve your problem. We gathered highly confidential/personal data. These data are currently stored on a private server. This server will be immediately destroyed after your payment. If you decide to not pay, we will release your data to public or re-seller. So you can expect your data to be publicly available in the near future.. We only seek money and our goal is not to damage your reputation or prevent your business from running. You will can send us 2-3 non-important files and we will decrypt it for free to prove we are able to give your files back. Contact us for price and get decryption software. .onion * Note that this server is available via Tor browser only Follow the instructions to open the link: 1. Type the addres "https://www.torproject.org" in your Internet browser. It opens the Tor site. 2. Press "Download Tor", then press "Download Tor Browser Bundle", install and run it. 3. Now you have Tor browser. In the Tor Browser open .onion 4. Start a chat and follow the further instructions. If you can not use the above link, use the email: [email protected] [email protected] * To contact us, create a new free email account on the site: protonmail.com IF YOU DON'T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER. �����������

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

    ransomwaremedusalocker
  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 37 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 33 IoCs
    adwarespyware
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\lockisdog.exe
    "C:\Users\Admin\AppData\Local\Temp\lockisdog.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\lockisdog.exe > nul
      2⤵
        PID:1924
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\how_to_back_files.html
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:316 CREDAT:275457 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1096
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:1332

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/316-54-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp

        Filesize

        8KB

        Download

      • memory/316-55-0x0000000002160000-0x0000000002170000-memory.dmp

        Filesize

        64KB

        Download

      • memory/2016-53-0x0000000075F31000-0x0000000075F33000-memory.dmp

        Filesize

        8KB

        Download