Analysis

  • max time kernel
    11s
  • max time network
    13s
  • 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 05:49

General

  • Target

    7ffc71cf20cf0e0e4985b41663d03d4c12537a1d751b1d4c06cfb63ca6e61dde.exe

  • Size

    424KB

  • MD5

    7d5a9f62895e77a67c910788d841e997

  • SHA1

    666e0ca8ad9a45b61890ccd7fd99c84a57fc7dd6

  • SHA256

    7ffc71cf20cf0e0e4985b41663d03d4c12537a1d751b1d4c06cfb63ca6e61dde

  • SHA512

    274bf9344b8f51fa8fc4c75360811b8fe6dbb8c01e118a58efbabcc2fe57edab309aa41b58894d00900565be871ff59db9da320fbf4b5551f55762401b0d9e53

  • SSDEEP

    12288:mmM+X6gSTFp6q5ePiWkO1AeV5WhtblCJxfS6:FMq6gSTLj5f5O5u5OR1

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2295526160-1155304984-640977766-1000\_RECoVERY_+ejngr.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/4B3DA31B3389251 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/4B3DA31B3389251 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/4B3DA31B3389251 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/4B3DA31B3389251 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/4B3DA31B3389251 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/4B3DA31B3389251 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/4B3DA31B3389251 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/4B3DA31B3389251
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/4B3DA31B3389251

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/4B3DA31B3389251

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/4B3DA31B3389251

http://xlowfznrg4wf7dli.ONION/4B3DA31B3389251

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 62 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\7ffc71cf20cf0e0e4985b41663d03d4c12537a1d751b1d4c06cfb63ca6e61dde.exe
    "C:\Users\Admin\AppData\Local\Temp\7ffc71cf20cf0e0e4985b41663d03d4c12537a1d751b1d4c06cfb63ca6e61dde.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Windows\khvovqawyuno.exe
      C:\Windows\khvovqawyuno.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:1696
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3496
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\7FFC71~1.EXE
      2⤵
        PID:4932
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1084

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\khvovqawyuno.exe

      Filesize

      424KB

      MD5

      7d5a9f62895e77a67c910788d841e997

      SHA1

      666e0ca8ad9a45b61890ccd7fd99c84a57fc7dd6

      SHA256

      7ffc71cf20cf0e0e4985b41663d03d4c12537a1d751b1d4c06cfb63ca6e61dde

      SHA512

      274bf9344b8f51fa8fc4c75360811b8fe6dbb8c01e118a58efbabcc2fe57edab309aa41b58894d00900565be871ff59db9da320fbf4b5551f55762401b0d9e53

    • C:\Windows\khvovqawyuno.exe

      Filesize

      424KB

      MD5

      7d5a9f62895e77a67c910788d841e997

      SHA1

      666e0ca8ad9a45b61890ccd7fd99c84a57fc7dd6

      SHA256

      7ffc71cf20cf0e0e4985b41663d03d4c12537a1d751b1d4c06cfb63ca6e61dde

      SHA512

      274bf9344b8f51fa8fc4c75360811b8fe6dbb8c01e118a58efbabcc2fe57edab309aa41b58894d00900565be871ff59db9da320fbf4b5551f55762401b0d9e53

    • memory/560-132-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/560-139-0x0000000002270000-0x00000000022F5000-memory.dmp

      Filesize

      532KB

    • memory/1696-136-0x0000000000000000-mapping.dmp

    • memory/1696-145-0x0000000000990000-0x0000000000A15000-memory.dmp

      Filesize

      532KB

    • memory/3496-146-0x0000000000000000-mapping.dmp

    • memory/4932-140-0x0000000000000000-mapping.dmp