Analysis

  • max time kernel
    12s
  • max time network
    15s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-10-2022 15:05

General

  • Target

    67733a26f813e0384bf4a727fcd6af8253e88ea7a13f45e6b6d3ba78cfcede0c.exe

  • Size

    424KB

  • MD5

    c9489c311cef8e2fd8b25202625f8300

  • SHA1

    fc8278fc91cfe0adb178db023a05be60da51a877

  • SHA256

    67733a26f813e0384bf4a727fcd6af8253e88ea7a13f45e6b6d3ba78cfcede0c

  • SHA512

    d7429ceb069e6f2069ef49550764ca8f69c6a147516fb43c3a00a5792332d404cc69f59f4402609de7da4b7d159bfc790af09d62cbbc1e46245e42af3cff6c29

  • SSDEEP

    12288:HL2WjWgDhrhjxaRaDz7z4HMLzskGWoXblCJxfS6:HDXpVx7f7dLoMorOR1

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-929662420-1054238289-2961194603-1000\_RECoVERY_+tuurs.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/2D2795B38D7B076 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/2D2795B38D7B076 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2D2795B38D7B076 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/2D2795B38D7B076 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/2D2795B38D7B076 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/2D2795B38D7B076 http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2D2795B38D7B076 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/2D2795B38D7B076
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/2D2795B38D7B076

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/2D2795B38D7B076

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2D2795B38D7B076

http://xlowfznrg4wf7dli.ONION/2D2795B38D7B076

Signatures

  • TeslaCrypt, AlphaCrypt

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

  • 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.

  • 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 48 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\67733a26f813e0384bf4a727fcd6af8253e88ea7a13f45e6b6d3ba78cfcede0c.exe
    "C:\Users\Admin\AppData\Local\Temp\67733a26f813e0384bf4a727fcd6af8253e88ea7a13f45e6b6d3ba78cfcede0c.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:692
    • C:\Windows\xcfecwndnmvy.exe
      C:\Windows\xcfecwndnmvy.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:1472
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3788
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\67733A~1.EXE
      2⤵
        PID:4760
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1268

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\xcfecwndnmvy.exe

      Filesize

      424KB

      MD5

      c9489c311cef8e2fd8b25202625f8300

      SHA1

      fc8278fc91cfe0adb178db023a05be60da51a877

      SHA256

      67733a26f813e0384bf4a727fcd6af8253e88ea7a13f45e6b6d3ba78cfcede0c

      SHA512

      d7429ceb069e6f2069ef49550764ca8f69c6a147516fb43c3a00a5792332d404cc69f59f4402609de7da4b7d159bfc790af09d62cbbc1e46245e42af3cff6c29

    • C:\Windows\xcfecwndnmvy.exe

      Filesize

      424KB

      MD5

      c9489c311cef8e2fd8b25202625f8300

      SHA1

      fc8278fc91cfe0adb178db023a05be60da51a877

      SHA256

      67733a26f813e0384bf4a727fcd6af8253e88ea7a13f45e6b6d3ba78cfcede0c

      SHA512

      d7429ceb069e6f2069ef49550764ca8f69c6a147516fb43c3a00a5792332d404cc69f59f4402609de7da4b7d159bfc790af09d62cbbc1e46245e42af3cff6c29

    • memory/692-132-0x0000000000400000-0x00000000004AE000-memory.dmp

      Filesize

      696KB

    • memory/692-139-0x00000000022B0000-0x0000000002335000-memory.dmp

      Filesize

      532KB

    • memory/1472-136-0x0000000000000000-mapping.dmp

    • memory/1472-145-0x0000000002180000-0x0000000002205000-memory.dmp

      Filesize

      532KB

    • memory/3788-146-0x0000000000000000-mapping.dmp

    • memory/4760-140-0x0000000000000000-mapping.dmp