Analysis

  • max time kernel
    10s
  • max time network
    10s
  • 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 23:51

General

  • Target

    c704efe7c23661b448713dd573999023d9d729a16da659cde648297484b827ab.exe

  • Size

    424KB

  • MD5

    51b36dc6c3c23b77aa2955f374b3e155

  • SHA1

    d9d7282b349cfb23d1115c9eed0d0458952d7d00

  • SHA256

    c704efe7c23661b448713dd573999023d9d729a16da659cde648297484b827ab

  • SHA512

    58814cdd42bdb698f1d02aa425dbe22643f89dc4836db3a8f385a698b4a6e598d037aff7b776b598fc71295317bbd613ad0a8a91050c331a21e281fa3521d154

  • SSDEEP

    6144:8sPAYJDo2magV+8GUEmGM41DwAHQmjdN1AUL0yogLpWPoXbftChXW3AxfulDGgB:Xp808fEmLqDwAJjpA+E+blCJxfS6

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2629973501-4017243118-3254762364-1000\_RECoVERY_+ngydn.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/973FDC73AB1D811D 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/973FDC73AB1D811D 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/973FDC73AB1D811D 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/973FDC73AB1D811D 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/973FDC73AB1D811D http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/973FDC73AB1D811D http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/973FDC73AB1D811D *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/973FDC73AB1D811D
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/973FDC73AB1D811D

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/973FDC73AB1D811D

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/973FDC73AB1D811D

http://xlowfznrg4wf7dli.ONION/973FDC73AB1D811D

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 60 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\c704efe7c23661b448713dd573999023d9d729a16da659cde648297484b827ab.exe
    "C:\Users\Admin\AppData\Local\Temp\c704efe7c23661b448713dd573999023d9d729a16da659cde648297484b827ab.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5044
    • C:\Windows\tffneiiygyyg.exe
      C:\Windows\tffneiiygyyg.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:2484
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2352
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\C704EF~1.EXE
      2⤵
        PID:4264
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4300

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\tffneiiygyyg.exe

      Filesize

      424KB

      MD5

      51b36dc6c3c23b77aa2955f374b3e155

      SHA1

      d9d7282b349cfb23d1115c9eed0d0458952d7d00

      SHA256

      c704efe7c23661b448713dd573999023d9d729a16da659cde648297484b827ab

      SHA512

      58814cdd42bdb698f1d02aa425dbe22643f89dc4836db3a8f385a698b4a6e598d037aff7b776b598fc71295317bbd613ad0a8a91050c331a21e281fa3521d154

    • C:\Windows\tffneiiygyyg.exe

      Filesize

      424KB

      MD5

      51b36dc6c3c23b77aa2955f374b3e155

      SHA1

      d9d7282b349cfb23d1115c9eed0d0458952d7d00

      SHA256

      c704efe7c23661b448713dd573999023d9d729a16da659cde648297484b827ab

      SHA512

      58814cdd42bdb698f1d02aa425dbe22643f89dc4836db3a8f385a698b4a6e598d037aff7b776b598fc71295317bbd613ad0a8a91050c331a21e281fa3521d154

    • memory/2352-146-0x0000000000000000-mapping.dmp

    • memory/2484-137-0x0000000000000000-mapping.dmp

    • memory/2484-145-0x0000000002130000-0x00000000021B5000-memory.dmp

      Filesize

      532KB

    • memory/4264-140-0x0000000000000000-mapping.dmp

    • memory/5044-132-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/5044-136-0x0000000000B10000-0x0000000000B95000-memory.dmp

      Filesize

      532KB