Analysis

  • max time kernel
    133s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    27-01-2022 17:20

General

  • Target

    2f76c2801b2bac498e94d68e99117c5367af97e0.dll

  • Size

    678KB

  • MD5

    7ff8505ce55eaf44baf843d3683c5e39

  • SHA1

    2f76c2801b2bac498e94d68e99117c5367af97e0

  • SHA256

    5e54dfc50c22a8cd92c5d05598bbafc75b999b93224d900017b892a4d9f22077

  • SHA512

    bf51272fcf62d9ed3d33718cb1fb707794680b65ea9dcd22f5b5cb28441e7b2423d6bfe43407b2adf4556a88058b5fbc757da6e961d57d34003f15548d2628f0

Score
10/10

Malware Config

Extracted

Path

C:\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://contirec7nchr45rx6ympez5rjldibnqzh7lsa56lvjvaeywhvoj3wad.onion/8LijJVnUPEWEaSDvo6Ho56xzmhj8AwiSqncJYX3Hhd3hLoOajUpUdvIF4GHP69AP 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--- 8LijJVnUPEWEaSDvo6Ho56xzmhj8AwiSqncJYX3Hhd3hLoOajUpUdvIF4GHP69AP ---END ID---
URLs

http://contirec7nchr45rx6ympez5rjldibnqzh7lsa56lvjvaeywhvoj3wad.onion/8LijJVnUPEWEaSDvo6Ho56xzmhj8AwiSqncJYX3Hhd3hLoOajUpUdvIF4GHP69AP

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Modifies extensions of user files 12 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 1 IoCs
  • Drops desktop.ini file(s) 32 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2f76c2801b2bac498e94d68e99117c5367af97e0.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\2f76c2801b2bac498e94d68e99117c5367af97e0.dll
      2⤵
      • Modifies extensions of user files
      • Drops startup file
      • Drops desktop.ini file(s)
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      PID:2696
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 2004
        3⤵
        • Program crash
        • Suspicious use of AdjustPrivilegeToken
        PID:3392
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    PID:1236
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
    1⤵
    • Drops file in Windows directory
    PID:1140
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:844

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1140-122-0x000001D011BA0000-0x000001D011BB0000-memory.dmp

      Filesize

      64KB

    • memory/1140-123-0x000001D011DD0000-0x000001D011DE0000-memory.dmp

      Filesize

      64KB

    • memory/2696-143-0x0000000010000000-0x00000000100D3000-memory.dmp

      Filesize

      844KB

    • memory/2696-144-0x00000000025F0000-0x00000000025F1000-memory.dmp

      Filesize

      4KB

    • memory/2696-145-0x0000000010000000-0x00000000100D3000-memory.dmp

      Filesize

      844KB