Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/09/2024, 16:49

General

  • Target

    a64dd20cad3f3bb1ef1277b9924b2de0a40ed4e5b013db68ab59efc04d47b692.exe

  • Size

    514KB

  • MD5

    d57c0e39087d67b6d397ca2c738e38e1

  • SHA1

    11d1507651e6c2e25ff0a78febe0f06f5c1419c0

  • SHA256

    a64dd20cad3f3bb1ef1277b9924b2de0a40ed4e5b013db68ab59efc04d47b692

  • SHA512

    dbda08c451fc029e98e27a36fa6e654558a576b8c249e6e1cbe0a94ba4b3158d992c524c8f9e22a00247c9578d6a8601550b6c531423227daff262c98c3238c4

  • SSDEEP

    3072:bwaXfbBI4++rye6iLfMzmlOe4UKXqlc8Lm87wgZPzOmem0Oa9G8Y3:RXzin6MUKXSL/hLOH/

Malware Config

Extracted

Path

C:\ProgramData\readme.txt

Family

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.ws 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--- fqAM1Wjx6ZFKZezjt1CnsVfuNcsFUvsiwLgufIXADXkqyWAWww27zBekvcfCaTzh ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.ws

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Renames multiple (65) files with added filename extension

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

  • Drops file in Program Files directory 64 IoCs
  • Program crash 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\a64dd20cad3f3bb1ef1277b9924b2de0a40ed4e5b013db68ab59efc04d47b692.exe
    "C:\Users\Admin\AppData\Local\Temp\a64dd20cad3f3bb1ef1277b9924b2de0a40ed4e5b013db68ab59efc04d47b692.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:408
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{70143ADF-5466-4A13-84A7-BA59735813EC}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3336
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{70143ADF-5466-4A13-84A7-BA59735813EC}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4956
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 408 -s 2032
      2⤵
      • Program crash
      PID:4132
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4604
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 408 -ip 408
    1⤵
      PID:2536

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\readme.txt

      Filesize

      1KB

      MD5

      ac912958d8ddded9bb3117498e76ac41

      SHA1

      a818e44237b79ef828026c6530465a6ff6a17fd5

      SHA256

      da04404dcf44a4f0078819d3dfa9261e52a50d29ed379a75a6bd160e7bde02b2

      SHA512

      fb64251c4cf63f9df40b1738613fa13eddcc06e9d86246215fd38281d1b2e137308a26f9853f3f80edb4f5d01ccf9dc647bf7c7895527806b8cc705eb6e3ef0e