Analysis

  • max time kernel
    156s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-07-2022 02:18

General

  • Target

    59f3d25993b1678406b72625c721ace54355ecf73181cd7a69a5f255141ef1e7.exe

  • Size

    328KB

  • MD5

    5af091523bc0899413a7b601ee2b2abb

  • SHA1

    ea2ee777b59f0bc17dfd319ce609616cb47ddd01

  • SHA256

    59f3d25993b1678406b72625c721ace54355ecf73181cd7a69a5f255141ef1e7

  • SHA512

    d37ec05ca494493c78b7a28174f0ac541b4bc69d54a330a36828be69f773b4cdf1bc70935c2e7399999efd096cb283768d8e7c44b550003bc4603d02e16fde64

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3463845317-933582289-45817732-1000\Recovery+anjxf.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://tt54rfdjhb34rfbnknaerg.milerteddy.com/8ADE6B6020FF59F0 2. http://kkd47eh4hdjshb5t.angortra.at/8ADE6B6020FF59F0 3. http://ytrest84y5i456hghadefdsd.pontogrot.com/8ADE6B6020FF59F0 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/8ADE6B6020FF59F0 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://tt54rfdjhb34rfbnknaerg.milerteddy.com/8ADE6B6020FF59F0 http://kkd47eh4hdjshb5t.angortra.at/8ADE6B6020FF59F0 http://ytrest84y5i456hghadefdsd.pontogrot.com/8ADE6B6020FF59F0 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/8ADE6B6020FF59F0
URLs

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/8ADE6B6020FF59F0

http://kkd47eh4hdjshb5t.angortra.at/8ADE6B6020FF59F0

http://ytrest84y5i456hghadefdsd.pontogrot.com/8ADE6B6020FF59F0

http://xlowfznrg4wf7dli.ONION/8ADE6B6020FF59F0

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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\59f3d25993b1678406b72625c721ace54355ecf73181cd7a69a5f255141ef1e7.exe
    "C:\Users\Admin\AppData\Local\Temp\59f3d25993b1678406b72625c721ace54355ecf73181cd7a69a5f255141ef1e7.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Windows\ywcwdlvmcpex.exe
      C:\Windows\ywcwdlvmcpex.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:1212
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /noin teractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4880
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\59F3D2~1.EXE
      2⤵
        PID:4900

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\ywcwdlvmcpex.exe

      Filesize

      328KB

      MD5

      5af091523bc0899413a7b601ee2b2abb

      SHA1

      ea2ee777b59f0bc17dfd319ce609616cb47ddd01

      SHA256

      59f3d25993b1678406b72625c721ace54355ecf73181cd7a69a5f255141ef1e7

      SHA512

      d37ec05ca494493c78b7a28174f0ac541b4bc69d54a330a36828be69f773b4cdf1bc70935c2e7399999efd096cb283768d8e7c44b550003bc4603d02e16fde64

    • C:\Windows\ywcwdlvmcpex.exe

      Filesize

      328KB

      MD5

      5af091523bc0899413a7b601ee2b2abb

      SHA1

      ea2ee777b59f0bc17dfd319ce609616cb47ddd01

      SHA256

      59f3d25993b1678406b72625c721ace54355ecf73181cd7a69a5f255141ef1e7

      SHA512

      d37ec05ca494493c78b7a28174f0ac541b4bc69d54a330a36828be69f773b4cdf1bc70935c2e7399999efd096cb283768d8e7c44b550003bc4603d02e16fde64

    • memory/1212-137-0x0000000000000000-mapping.dmp

    • memory/1212-144-0x0000000002110000-0x0000000002195000-memory.dmp

      Filesize

      532KB

    • memory/2308-132-0x0000000000AD0000-0x0000000000B55000-memory.dmp

      Filesize

      532KB

    • memory/2308-133-0x0000000000400000-0x0000000000494000-memory.dmp

      Filesize

      592KB

    • memory/2308-146-0x0000000000AD0000-0x0000000000B55000-memory.dmp

      Filesize

      532KB

    • memory/4880-147-0x0000000000000000-mapping.dmp

    • memory/4900-145-0x0000000000000000-mapping.dmp