Analysis

  • max time kernel
    186s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12-07-2022 05:17

General

  • Target

    4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa.exe

  • Size

    388KB

  • MD5

    596cbbbf42f77c3b512ad0277718329d

  • SHA1

    5bc4358cbbea466e2d661c53cf7b5cb83e34feed

  • SHA256

    4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa

  • SHA512

    8db5bf21f28031adbc1355116bbcb75c44e911ef4e43ed17570293d1f3e83694c67254ff1958850e65c065a2d4cfdec3297358647a35f8470905459a1fb07dd7

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2632097139-1792035885-811742494-1000\Recovery+kgxct.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/EB5F4FDBDFC9E56 2. http://kkd47eh4hdjshb5t.angortra.at/EB5F4FDBDFC9E56 3. http://ytrest84y5i456hghadefdsd.pontogrot.com/EB5F4FDBDFC9E56 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/EB5F4FDBDFC9E56 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://tt54rfdjhb34rfbnknaerg.milerteddy.com/EB5F4FDBDFC9E56 http://kkd47eh4hdjshb5t.angortra.at/EB5F4FDBDFC9E56 http://ytrest84y5i456hghadefdsd.pontogrot.com/EB5F4FDBDFC9E56 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/EB5F4FDBDFC9E56
URLs

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/EB5F4FDBDFC9E56

http://kkd47eh4hdjshb5t.angortra.at/EB5F4FDBDFC9E56

http://ytrest84y5i456hghadefdsd.pontogrot.com/EB5F4FDBDFC9E56

http://xlowfznrg4wf7dli.ONION/EB5F4FDBDFC9E56

Signatures

  • TeslaCrypt, AlphaCrypt

    Ransomware based on CryptoLocker. Shut down by the developers in 2016.

  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

  • 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 23 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa.exe
    "C:\Users\Admin\AppData\Local\Temp\4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3976
    • C:\Users\Admin\AppData\Local\Temp\4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa.exe
      "C:\Users\Admin\AppData\Local\Temp\4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4064
      • C:\Windows\akxrmywehjhm.exe
        C:\Windows\akxrmywehjhm.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2640
        • C:\Windows\akxrmywehjhm.exe
          C:\Windows\akxrmywehjhm.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:4440
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /noin teractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4232
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4CBB26~1.EXE
        3⤵
          PID:384

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\akxrmywehjhm.exe

      Filesize

      388KB

      MD5

      596cbbbf42f77c3b512ad0277718329d

      SHA1

      5bc4358cbbea466e2d661c53cf7b5cb83e34feed

      SHA256

      4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa

      SHA512

      8db5bf21f28031adbc1355116bbcb75c44e911ef4e43ed17570293d1f3e83694c67254ff1958850e65c065a2d4cfdec3297358647a35f8470905459a1fb07dd7

    • C:\Windows\akxrmywehjhm.exe

      Filesize

      388KB

      MD5

      596cbbbf42f77c3b512ad0277718329d

      SHA1

      5bc4358cbbea466e2d661c53cf7b5cb83e34feed

      SHA256

      4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa

      SHA512

      8db5bf21f28031adbc1355116bbcb75c44e911ef4e43ed17570293d1f3e83694c67254ff1958850e65c065a2d4cfdec3297358647a35f8470905459a1fb07dd7

    • C:\Windows\akxrmywehjhm.exe

      Filesize

      388KB

      MD5

      596cbbbf42f77c3b512ad0277718329d

      SHA1

      5bc4358cbbea466e2d661c53cf7b5cb83e34feed

      SHA256

      4cbb264537f6d1082bdfabf35cd3f901832e1c03b47e45390126689b89f183aa

      SHA512

      8db5bf21f28031adbc1355116bbcb75c44e911ef4e43ed17570293d1f3e83694c67254ff1958850e65c065a2d4cfdec3297358647a35f8470905459a1fb07dd7

    • memory/384-143-0x0000000000000000-mapping.dmp

    • memory/2640-140-0x0000000000000000-mapping.dmp

    • memory/3976-137-0x0000000000E40000-0x0000000000E43000-memory.dmp

      Filesize

      12KB

    • memory/3976-132-0x0000000000E40000-0x0000000000E43000-memory.dmp

      Filesize

      12KB

    • memory/3976-133-0x0000000000E40000-0x0000000000E43000-memory.dmp

      Filesize

      12KB

    • memory/4064-144-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4064-135-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4064-136-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4064-134-0x0000000000000000-mapping.dmp

    • memory/4064-138-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4064-139-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4232-152-0x0000000000000000-mapping.dmp

    • memory/4440-145-0x0000000000000000-mapping.dmp

    • memory/4440-148-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4440-149-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4440-150-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/4440-151-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB