Analysis

  • max time kernel
    156s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    19-06-2022 23:59

General

  • Target

    33d6d169bcfca5b661b30d32789d1ab1462784d9bcf2903bda416a3fc067855d.exe

  • Size

    336KB

  • MD5

    00da5b6930d2a8a52ab40a230b56b50b

  • SHA1

    d5a6f40f2fe27fe08da46b25b053d1d913e9e7d5

  • SHA256

    33d6d169bcfca5b661b30d32789d1ab1462784d9bcf2903bda416a3fc067855d

  • SHA512

    35003b8fbfc5c5f4f13cac52c400c1c27610da4cb543efcff98af35eb855cae2fa5ce01a18a558496844223fb6c4177ff41ee21b6e9f2d70bcef10a98e1c9f53

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1081944012-3634099177-1681222835-1000\_RECoVERY_+axbve.txt

Family

teslacrypt

Ransom Note
NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with AES More information about the encryption keys using AES can be found here: http://en.wikipedia.org/wiki/AES How did this happen ? !!! Specially for your PC was generated personal AES KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://yyre45dbvn2nhbefbmh.begumvelic.at/AEFE6D11CE492 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/AEFE6D11CE492 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/AEFE6D11CE492 If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser 3. Type in the address bar: xlowfznrg4wf7dli.onion/AEFE6D11CE492 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/AEFE6D11CE492 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/AEFE6D11CE492 http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/AEFE6D11CE492 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/AEFE6D11CE492
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/AEFE6D11CE492

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/AEFE6D11CE492

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/AEFE6D11CE492

http://xlowfznrg4wf7dli.ONION/AEFE6D11CE492

Signatures

  • TeslaCrypt, AlphaCrypt

    Ransomware based on CryptoLocker. Shut down by the developers in 2016.

  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33d6d169bcfca5b661b30d32789d1ab1462784d9bcf2903bda416a3fc067855d.exe
    "C:\Users\Admin\AppData\Local\Temp\33d6d169bcfca5b661b30d32789d1ab1462784d9bcf2903bda416a3fc067855d.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4280
    • C:\Windows\syctuojorjvb.exe
      C:\Windows\syctuojorjvb.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:532
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1204
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\33D6D1~1.EXE
      2⤵
        PID:1280
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4164

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\syctuojorjvb.exe

      Filesize

      336KB

      MD5

      00da5b6930d2a8a52ab40a230b56b50b

      SHA1

      d5a6f40f2fe27fe08da46b25b053d1d913e9e7d5

      SHA256

      33d6d169bcfca5b661b30d32789d1ab1462784d9bcf2903bda416a3fc067855d

      SHA512

      35003b8fbfc5c5f4f13cac52c400c1c27610da4cb543efcff98af35eb855cae2fa5ce01a18a558496844223fb6c4177ff41ee21b6e9f2d70bcef10a98e1c9f53

    • C:\Windows\syctuojorjvb.exe

      Filesize

      336KB

      MD5

      00da5b6930d2a8a52ab40a230b56b50b

      SHA1

      d5a6f40f2fe27fe08da46b25b053d1d913e9e7d5

      SHA256

      33d6d169bcfca5b661b30d32789d1ab1462784d9bcf2903bda416a3fc067855d

      SHA512

      35003b8fbfc5c5f4f13cac52c400c1c27610da4cb543efcff98af35eb855cae2fa5ce01a18a558496844223fb6c4177ff41ee21b6e9f2d70bcef10a98e1c9f53

    • memory/532-135-0x0000000000000000-mapping.dmp

    • memory/532-142-0x0000000002100000-0x0000000002186000-memory.dmp

      Filesize

      536KB

    • memory/1204-144-0x0000000000000000-mapping.dmp

    • memory/1280-143-0x0000000000000000-mapping.dmp

    • memory/4280-130-0x0000000000400000-0x0000000000498000-memory.dmp

      Filesize

      608KB

    • memory/4280-134-0x0000000002260000-0x00000000022E6000-memory.dmp

      Filesize

      536KB