Analysis

  • max time kernel
    10s
  • max time network
    11s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2022 05:27

General

  • Target

    7e9dc695fa671680871d62dd8521b4833fcbfc00a4e5da792083b38c7870d7cd.exe

  • Size

    424KB

  • MD5

    7c40b634eede572b07ff7a01b58241e3

  • SHA1

    4100efcc1336945fad2de3dac21faa7056b1ba4c

  • SHA256

    7e9dc695fa671680871d62dd8521b4833fcbfc00a4e5da792083b38c7870d7cd

  • SHA512

    0b04c3e70b67cb6c5c2e3dcdc3c47efd1bfbbb8f12411577b6217cceb7359307485257ce017456865f12886018888904316aa51c2fe2c0451dc4b93dda046d3a

  • SSDEEP

    12288:EmM+X6gSTFp6q5ePiWkO1AeV5WhtblCJxfS6:zMq6gSTLj5f5O5u5OR1

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2295526160-1155304984-640977766-1000\_RECoVERY_+wvedb.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://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/DF9513C188DF97B3 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/DF9513C188DF97B3 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/DF9513C188DF97B3 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/DF9513C188DF97B3 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/DF9513C188DF97B3 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/DF9513C188DF97B3 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/DF9513C188DF97B3 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/DF9513C188DF97B3
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/DF9513C188DF97B3

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/DF9513C188DF97B3

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/DF9513C188DF97B3

http://xlowfznrg4wf7dli.ONION/DF9513C188DF97B3

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 58 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\7e9dc695fa671680871d62dd8521b4833fcbfc00a4e5da792083b38c7870d7cd.exe
    "C:\Users\Admin\AppData\Local\Temp\7e9dc695fa671680871d62dd8521b4833fcbfc00a4e5da792083b38c7870d7cd.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\okrtyiiyixor.exe
      C:\Windows\okrtyiiyixor.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:4844
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:604
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\7E9DC6~1.EXE
      2⤵
        PID:440
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4612

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\okrtyiiyixor.exe

      Filesize

      424KB

      MD5

      7c40b634eede572b07ff7a01b58241e3

      SHA1

      4100efcc1336945fad2de3dac21faa7056b1ba4c

      SHA256

      7e9dc695fa671680871d62dd8521b4833fcbfc00a4e5da792083b38c7870d7cd

      SHA512

      0b04c3e70b67cb6c5c2e3dcdc3c47efd1bfbbb8f12411577b6217cceb7359307485257ce017456865f12886018888904316aa51c2fe2c0451dc4b93dda046d3a

    • C:\Windows\okrtyiiyixor.exe

      Filesize

      424KB

      MD5

      7c40b634eede572b07ff7a01b58241e3

      SHA1

      4100efcc1336945fad2de3dac21faa7056b1ba4c

      SHA256

      7e9dc695fa671680871d62dd8521b4833fcbfc00a4e5da792083b38c7870d7cd

      SHA512

      0b04c3e70b67cb6c5c2e3dcdc3c47efd1bfbbb8f12411577b6217cceb7359307485257ce017456865f12886018888904316aa51c2fe2c0451dc4b93dda046d3a

    • memory/440-140-0x0000000000000000-mapping.dmp

    • memory/604-147-0x0000000000000000-mapping.dmp

    • memory/1260-132-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/1260-136-0x0000000000A90000-0x0000000000B15000-memory.dmp

      Filesize

      532KB

    • memory/1260-141-0x0000000000A90000-0x0000000000B15000-memory.dmp

      Filesize

      532KB

    • memory/4844-137-0x0000000000000000-mapping.dmp

    • memory/4844-146-0x00000000009A0000-0x0000000000A25000-memory.dmp

      Filesize

      532KB