Analysis

  • max time kernel
    115s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    28-09-2021 20:17

General

  • Target

    3402d9d20bc4622a87c2533484fb98889a5a85bf3191192faf4ef8431f7a4b9c.bin.sample.exe

  • Size

    185KB

  • MD5

    1ac77c173fba7dd1475e84c50be35767

  • SHA1

    3fd475ff9035742ff45d8a85c05e0c3fca453326

  • SHA256

    3402d9d20bc4622a87c2533484fb98889a5a85bf3191192faf4ef8431f7a4b9c

  • SHA512

    e02ad3865e5790c17636f661f2a2aaab2ce5dd3efb78cb3402604fbd8cd058714fdba6dd78071c2710e99d2944f6607cba3545d0ca252fbdda4878d0a017f90f

Malware Config

Extracted

Path

C:\R3ADM3.txt

Family

conti

Ransom Note
All of your files are currently encrypted by CONTI strain. 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://m232fdxbfmbrcehbrj5iayknxnggf6niqfj6x4iedrgtab4qupzjlaid.onion HTTPS VERSION : https://contirecovery.info 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--- KCunZoziQUNQoJta54VhbE7Y8PD8FPDSGWulQ3gvxuiG7SFE4tGY4mHcaYmlFZM2 ---END ID---
URLs

http://m232fdxbfmbrcehbrj5iayknxnggf6niqfj6x4iedrgtab4qupzjlaid.onion

https://contirecovery.info

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Modifies extensions of user files 8 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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 desktop.ini file(s) 32 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3402d9d20bc4622a87c2533484fb98889a5a85bf3191192faf4ef8431f7a4b9c.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\3402d9d20bc4622a87c2533484fb98889a5a85bf3191192faf4ef8431f7a4b9c.bin.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2176
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{2D3E78C1-16F5-45C2-8C51-8B602BF398FB}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2668
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{2D3E78C1-16F5-45C2-8C51-8B602BF398FB}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4080
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2768
  • 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:600
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
    1⤵
    • Drops file in Windows directory
    PID:2268

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2268-117-0x000001FD53C40000-0x000001FD53C50000-memory.dmp
    Filesize

    64KB

  • memory/2268-118-0x000001FD53CB0000-0x000001FD53CC0000-memory.dmp
    Filesize

    64KB

  • memory/2268-119-0x000001FD569D0000-0x000001FD569D1000-memory.dmp
    Filesize

    4KB

  • memory/2668-115-0x0000000000000000-mapping.dmp
  • memory/4080-116-0x0000000000000000-mapping.dmp