Analysis

  • max time kernel
    12s
  • max time network
    17s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-10-2022 05:10

General

  • Target

    18df9b798468c239fe3464bb550d69d29ff61bbe7e782f15d7e9cf19811b5d56.exe

  • Size

    356KB

  • MD5

    33243e0b29de23e7b0e502d430b19687

  • SHA1

    dea165f93de851c2e916b5ca849b21f459369dcc

  • SHA256

    18df9b798468c239fe3464bb550d69d29ff61bbe7e782f15d7e9cf19811b5d56

  • SHA512

    074cc4d64f2d20e423fde5d3dfc3a518b41a0f34eed73cadf3a9a924262e2848dbc8dfce5ffda6da4e3bdd71abeacde6fe83a6e2d626cb6ad71802473810651c

  • SSDEEP

    6144:WnuEzhHd/Opk3p1JWsjCLmwRHbN4mjc5SWH6NJBZwb9:+th9NJWsjDwR7NvjcSdNJBZw

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-929662420-1054238289-2961194603-1000\_RECoVERY_+bnmvx.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://yyre45dbvn2nhbefbmh.begumvelic.at/8A94CD3E330C95A 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/8A94CD3E330C95A 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/8A94CD3E330C95A 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/8A94CD3E330C95A 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/8A94CD3E330C95A http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/8A94CD3E330C95A http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/8A94CD3E330C95A *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/8A94CD3E330C95A
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/8A94CD3E330C95A

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/8A94CD3E330C95A

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/8A94CD3E330C95A

http://xlowfznrg4wf7dli.ONION/8A94CD3E330C95A

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\18df9b798468c239fe3464bb550d69d29ff61bbe7e782f15d7e9cf19811b5d56.exe
    "C:\Users\Admin\AppData\Local\Temp\18df9b798468c239fe3464bb550d69d29ff61bbe7e782f15d7e9cf19811b5d56.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:364
    • C:\Windows\fysiasueljar.exe
      C:\Windows\fysiasueljar.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:4864
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2404
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\18DF9B~1.EXE
      2⤵
        PID:4752
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:396

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\fysiasueljar.exe

      Filesize

      356KB

      MD5

      33243e0b29de23e7b0e502d430b19687

      SHA1

      dea165f93de851c2e916b5ca849b21f459369dcc

      SHA256

      18df9b798468c239fe3464bb550d69d29ff61bbe7e782f15d7e9cf19811b5d56

      SHA512

      074cc4d64f2d20e423fde5d3dfc3a518b41a0f34eed73cadf3a9a924262e2848dbc8dfce5ffda6da4e3bdd71abeacde6fe83a6e2d626cb6ad71802473810651c

    • C:\Windows\fysiasueljar.exe

      Filesize

      356KB

      MD5

      33243e0b29de23e7b0e502d430b19687

      SHA1

      dea165f93de851c2e916b5ca849b21f459369dcc

      SHA256

      18df9b798468c239fe3464bb550d69d29ff61bbe7e782f15d7e9cf19811b5d56

      SHA512

      074cc4d64f2d20e423fde5d3dfc3a518b41a0f34eed73cadf3a9a924262e2848dbc8dfce5ffda6da4e3bdd71abeacde6fe83a6e2d626cb6ad71802473810651c

    • memory/364-132-0x0000000000400000-0x000000000049D000-memory.dmp

      Filesize

      628KB

    • memory/364-135-0x0000000000950000-0x00000000009D6000-memory.dmp

      Filesize

      536KB

    • memory/364-144-0x0000000000950000-0x00000000009D6000-memory.dmp

      Filesize

      536KB

    • memory/2404-147-0x0000000000000000-mapping.dmp

    • memory/4752-140-0x0000000000000000-mapping.dmp

    • memory/4864-137-0x0000000000000000-mapping.dmp

    • memory/4864-146-0x0000000002180000-0x0000000002206000-memory.dmp

      Filesize

      536KB