Analysis

  • max time kernel
    151s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    28-09-2021 09:28

General

  • Target

    7e6d9a7da47d46be2a836c1779bb1616fba4f7c7187d71f66cff3a790f804ec3.bin.sample.exe

  • Size

    196KB

  • MD5

    3321c504d71b9782920fae791289ed21

  • SHA1

    6039f3dd5e743024ed9d9013fb603a7051d2df00

  • SHA256

    7e6d9a7da47d46be2a836c1779bb1616fba4f7c7187d71f66cff3a790f804ec3

  • SHA512

    f694ec9f2ea38cc62d95f408bfbfaa1061ac99e5ebe9ed986326e342594a5dc7cde2895dbf32ffe519cbdc98fe564e33d91102f4fdde8b91b006cf7c53ddb645

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://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--- Cv29U7wTICOSdKkvIPRATsktbj3T0MqrGVVXj4ZGL3wjmgKX0IimmN6Ll99hfjdQ ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.xyz/

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Modifies extensions of user files 10 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) 31 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies data under HKEY_USERS 1 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\7e6d9a7da47d46be2a836c1779bb1616fba4f7c7187d71f66cff3a790f804ec3.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\7e6d9a7da47d46be2a836c1779bb1616fba4f7c7187d71f66cff3a790f804ec3.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:4800
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{493E2A7D-D35C-4823-8312-DB6A87B45E66}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4948
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{493E2A7D-D35C-4823-8312-DB6A87B45E66}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4984
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4864
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -s BITS
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:2112
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:632
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
    1⤵
    • Drops file in Windows directory
    PID:1052

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1052-117-0x0000018393F00000-0x0000018393F10000-memory.dmp

    Filesize

    64KB

  • memory/1052-116-0x0000018393EC0000-0x0000018393ED0000-memory.dmp

    Filesize

    64KB

  • memory/4948-114-0x0000000000000000-mapping.dmp

  • memory/4984-115-0x0000000000000000-mapping.dmp