Analysis

  • max time kernel
    160s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-07-2022 21:48

General

  • Target

    578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f.exe

  • Size

    361KB

  • MD5

    27898a045a3ca345434a46fcbebbc68b

  • SHA1

    cf409ce23924599df8b20c18c63ff76c5e0ea102

  • SHA256

    578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f

  • SHA512

    7e8c2107a82280197ec9354a535c66739864f09668d20232236497d6449cce36b45a8a15ebce87eafe8f3f160109cd4404322f4e6e060e98b19b6ab45ffba0c3

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1101907861-274115917-2188613224-1000\_RECoVERY_+mesal.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/FE122C2F982D8F53 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/FE122C2F982D8F53 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/FE122C2F982D8F53 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/FE122C2F982D8F53 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/FE122C2F982D8F53 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/FE122C2F982D8F53 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/FE122C2F982D8F53 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/FE122C2F982D8F53
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/FE122C2F982D8F53

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/FE122C2F982D8F53

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/FE122C2F982D8F53

http://xlowfznrg4wf7dli.ONION/FE122C2F982D8F53

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 26 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f.exe
    "C:\Users\Admin\AppData\Local\Temp\578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5012
    • C:\Users\Admin\AppData\Local\Temp\578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f.exe
      "C:\Users\Admin\AppData\Local\Temp\578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4476
      • C:\Windows\fahcwurslrlo.exe
        C:\Windows\fahcwurslrlo.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1032
        • C:\Windows\fahcwurslrlo.exe
          C:\Windows\fahcwurslrlo.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:4244
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:432
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\578AF0~1.EXE
        3⤵
          PID:4404
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4040

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\fahcwurslrlo.exe

      Filesize

      361KB

      MD5

      27898a045a3ca345434a46fcbebbc68b

      SHA1

      cf409ce23924599df8b20c18c63ff76c5e0ea102

      SHA256

      578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f

      SHA512

      7e8c2107a82280197ec9354a535c66739864f09668d20232236497d6449cce36b45a8a15ebce87eafe8f3f160109cd4404322f4e6e060e98b19b6ab45ffba0c3

    • C:\Windows\fahcwurslrlo.exe

      Filesize

      361KB

      MD5

      27898a045a3ca345434a46fcbebbc68b

      SHA1

      cf409ce23924599df8b20c18c63ff76c5e0ea102

      SHA256

      578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f

      SHA512

      7e8c2107a82280197ec9354a535c66739864f09668d20232236497d6449cce36b45a8a15ebce87eafe8f3f160109cd4404322f4e6e060e98b19b6ab45ffba0c3

    • C:\Windows\fahcwurslrlo.exe

      Filesize

      361KB

      MD5

      27898a045a3ca345434a46fcbebbc68b

      SHA1

      cf409ce23924599df8b20c18c63ff76c5e0ea102

      SHA256

      578af05fee137a6797e4ed0d2b3f1d4abb038cdb163cce1db68f1908fea2654f

      SHA512

      7e8c2107a82280197ec9354a535c66739864f09668d20232236497d6449cce36b45a8a15ebce87eafe8f3f160109cd4404322f4e6e060e98b19b6ab45ffba0c3

    • memory/4244-146-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4244-150-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4244-148-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4244-147-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4476-142-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4476-136-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4476-133-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4476-134-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4476-137-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/5012-130-0x0000000000690000-0x0000000000693000-memory.dmp

      Filesize

      12KB

    • memory/5012-135-0x0000000000690000-0x0000000000693000-memory.dmp

      Filesize

      12KB

    • memory/5012-131-0x0000000000690000-0x0000000000693000-memory.dmp

      Filesize

      12KB