Analysis

  • max time kernel
    153s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2023 14:55

General

  • Target

    cf941154cc06005a15ff3ca2f601e13b537794254d338f63eadd260855115902.exe

  • Size

    268KB

  • MD5

    cfea8286f13e566324aca989bbf1ecdd

  • SHA1

    0a295ca16213502d5a6629553cf2b168b2a4dfc7

  • SHA256

    cf941154cc06005a15ff3ca2f601e13b537794254d338f63eadd260855115902

  • SHA512

    674cf146d76a5ecfa18da92c987eea09c8f055d6a2474311c825e6a5877ca4f8eb72413dba393c8e314016665d85534842103bece430c417b1c004aa2aadcd70

  • SSDEEP

    3072:pLJGBP1t82ETTwPAobQ3tOqmb14Gul22QZkN7S44EXZNxRx6kFYDRzuU:VJEPCTwPp03YqyNulakL96fDRH

Score
10/10

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.xyz/ 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--- UER3GkowzzbBdoDPcmyBX9VeFqJwjP3eaRdqiYnKkc9wCu2jcHrnl8Vstgl447Ve ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.xyz/

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Renames multiple (1765) files with added filename extension

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

  • Drops desktop.ini file(s) 24 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 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\cf941154cc06005a15ff3ca2f601e13b537794254d338f63eadd260855115902.exe
    "C:\Users\Admin\AppData\Local\Temp\cf941154cc06005a15ff3ca2f601e13b537794254d338f63eadd260855115902.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4224
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{9005B75B-74DB-4B90-9256-2370FD904ACD}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1584
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{9005B75B-74DB-4B90-9256-2370FD904ACD}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1508
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4620

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Program Files (x86)\readme.txt

    Filesize

    1KB

    MD5

    02aca66083f85518ca1ac4bb688e7b4f

    SHA1

    8b6dab3ceb858ce768bc4d584597605dae5963cc

    SHA256

    60b63e95a062a9ac3694683db5f6b72f60856073f66a402558152ed5b34d2dd8

    SHA512

    304e6827421e72c614e69006eafa7b8863446980351d4875fb733b6388aee8787b08b87afee194988dbadf0a2d620ac3db3836f70b9e1eb271c23fa0f354de39

  • memory/4224-10-0x00000000007F0000-0x0000000000839000-memory.dmp

    Filesize

    292KB

  • memory/4224-625-0x00000000007F0000-0x0000000000839000-memory.dmp

    Filesize

    292KB

  • memory/4224-1100-0x00000000007F0000-0x0000000000839000-memory.dmp

    Filesize

    292KB

  • memory/4224-1319-0x00000000007F0000-0x0000000000839000-memory.dmp

    Filesize

    292KB

  • memory/4224-1648-0x00000000007F0000-0x0000000000839000-memory.dmp

    Filesize

    292KB