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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 10:34

General

  • Target

    41896f40197a6160fcab046b5fc63a36d0805dbb1ca5a03af35b92b27d9a0eb5.exe

  • Size

    329KB

  • MD5

    f365f7f6c852c1ac172a331d75e8cad5

  • SHA1

    683100cbbdf110828e0ee5e4acf20fc17f596c7a

  • SHA256

    41896f40197a6160fcab046b5fc63a36d0805dbb1ca5a03af35b92b27d9a0eb5

  • SHA512

    054f22c4fbb377a08bc1c64d441d6b09d3f6451b6b1b2073e77da54fd05075a61dd650525e395d74491856602188ebaf0c19e157ad2153494bcdb2e2e35fc4b8

  • SSDEEP

    6144:8y4IzfDPuh+i2G1EVxJelMWEWEWfiN+DDo0fRjy1KGTKc4dPdEkBC92hOZg+7H:Lf6h+i2hxcKNtpGDFfxy1rK7dW2Cf7H

Malware Config

Extracted

Path

C:\Program Files (x86)\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--- nxGtsvw2bTXAT1KrASQNsiIDqMUk1njit8CpshTA40lnS7JPQpZTLdDQ1YYlM3YX ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.ws

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Renames multiple (7249) files with added filename extension

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

  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • 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\41896f40197a6160fcab046b5fc63a36d0805dbb1ca5a03af35b92b27d9a0eb5.exe
    "C:\Users\Admin\AppData\Local\Temp\41896f40197a6160fcab046b5fc63a36d0805dbb1ca5a03af35b92b27d9a0eb5.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:624
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{5F0454BC-95BB-4EEE-BE84-B270146C6B6F}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4100
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{5F0454BC-95BB-4EEE-BE84-B270146C6B6F}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4552
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\readme.txt

    Filesize

    1KB

    MD5

    0ff023d9e019bb28379a77375272c2ee

    SHA1

    3c380eadd80214eaba0dfb65ae9e2be962fbefff

    SHA256

    59b5cf7e0c7fc4dec3122b6047814b4a01c6652598f9f58ee85451211d48b5e0

    SHA512

    44980825a0056c0d4805e1f13cb2d0c247271cd66344dd571cb6390ec16899363cfdee05e3b693b7bbd3ea4948d376ed91ee515d88c68607b737d9332a4f3cf6

  • memory/624-18233-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-16-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-8-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-10690-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18231-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-0-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18234-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18236-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18235-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18241-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18242-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB

  • memory/624-18249-0x000000007F0C0000-0x000000007F0F4000-memory.dmp

    Filesize

    208KB