Analysis

  • max time kernel
    155s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2022 21:49

General

  • Target

    5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50.exe

  • Size

    388KB

  • MD5

    726ef9ecbca2050a2495cef5ca9c8562

  • SHA1

    ae03be4b1486880d1011802e4204569263a7d5f5

  • SHA256

    5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50

  • SHA512

    9ceffc6e18376ba6ac3514def4468feb63a16d6d675cf2d0c66463fc8612b025ac5074a210f4c180e71dd03897c21f574c53cbc0e15009fa28d3c498360e9958

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3463845317-933582289-45817732-1000\Recovery+qspcn.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 RSA-4096. More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-4096 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://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BDA0BADDEAF3D69B 2. http://tes543berda73i48fsdfsd.keratadze.at/BDA0BADDEAF3D69B 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BDA0BADDEAF3D69B 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/BDA0BADDEAF3D69B 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BDA0BADDEAF3D69B http://tes543berda73i48fsdfsd.keratadze.at/BDA0BADDEAF3D69B http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BDA0BADDEAF3D69B *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/BDA0BADDEAF3D69B
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BDA0BADDEAF3D69B

http://tes543berda73i48fsdfsd.keratadze.at/BDA0BADDEAF3D69B

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BDA0BADDEAF3D69B

http://xlowfznrg4wf7dli.ONION/BDA0BADDEAF3D69B

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 2 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
  • Suspicious use of SetThreadContext 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 28 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50.exe
    "C:\Users\Admin\AppData\Local\Temp\5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3500
    • C:\Users\Admin\AppData\Local\Temp\5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50.exe
      "C:\Users\Admin\AppData\Local\Temp\5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3512
      • C:\Windows\bbyvndkuwyok.exe
        C:\Windows\bbyvndkuwyok.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:784
        • C:\Windows\bbyvndkuwyok.exe
          C:\Windows\bbyvndkuwyok.exe
          4⤵
          • 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:4536
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3080
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5DF9FC~1.EXE
        3⤵
          PID:3896
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4308

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\bbyvndkuwyok.exe

      Filesize

      388KB

      MD5

      726ef9ecbca2050a2495cef5ca9c8562

      SHA1

      ae03be4b1486880d1011802e4204569263a7d5f5

      SHA256

      5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50

      SHA512

      9ceffc6e18376ba6ac3514def4468feb63a16d6d675cf2d0c66463fc8612b025ac5074a210f4c180e71dd03897c21f574c53cbc0e15009fa28d3c498360e9958

    • C:\Windows\bbyvndkuwyok.exe

      Filesize

      388KB

      MD5

      726ef9ecbca2050a2495cef5ca9c8562

      SHA1

      ae03be4b1486880d1011802e4204569263a7d5f5

      SHA256

      5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50

      SHA512

      9ceffc6e18376ba6ac3514def4468feb63a16d6d675cf2d0c66463fc8612b025ac5074a210f4c180e71dd03897c21f574c53cbc0e15009fa28d3c498360e9958

    • C:\Windows\bbyvndkuwyok.exe

      Filesize

      388KB

      MD5

      726ef9ecbca2050a2495cef5ca9c8562

      SHA1

      ae03be4b1486880d1011802e4204569263a7d5f5

      SHA256

      5df9fc49473625410126f85b33807aed8e0eccd2e0bee457249b93166902af50

      SHA512

      9ceffc6e18376ba6ac3514def4468feb63a16d6d675cf2d0c66463fc8612b025ac5074a210f4c180e71dd03897c21f574c53cbc0e15009fa28d3c498360e9958

    • memory/3500-137-0x0000000002310000-0x0000000002313000-memory.dmp

      Filesize

      12KB

    • memory/3500-132-0x0000000002310000-0x0000000002313000-memory.dmp

      Filesize

      12KB

    • memory/3500-133-0x0000000002310000-0x0000000002313000-memory.dmp

      Filesize

      12KB

    • memory/3512-139-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/3512-135-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/3512-143-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/3512-145-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/3512-138-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/3512-136-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4536-149-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4536-150-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4536-151-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4536-153-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB