Analysis

  • max time kernel
    174s
  • max time network
    169s
  • 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 21:59

General

  • Target

    57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd.exe

  • Size

    369KB

  • MD5

    9009f09c28c128032a54dd758c608fb0

  • SHA1

    023c1cd36ae7eaf17824e08b70f32641f8b8098a

  • SHA256

    57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd

  • SHA512

    606b5deaa9969ae04cf4a94e766d72eb295551ccd3fadd8c9a22c7e1be98a0f03c66116599c0a1518f35aa59685bd276c89499c300b3806ef7a0b0e2013e9347

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1101907861-274115917-2188613224-1000\_RECoVERY_+pdjby.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/D1843F413023CB2D 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D1843F413023CB2D 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/D1843F413023CB2D 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/D1843F413023CB2D 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/D1843F413023CB2D http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D1843F413023CB2D http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/D1843F413023CB2D *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/D1843F413023CB2D
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/D1843F413023CB2D

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D1843F413023CB2D

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/D1843F413023CB2D

http://xlowfznrg4wf7dli.ONION/D1843F413023CB2D

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\57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd.exe
    "C:\Users\Admin\AppData\Local\Temp\57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd.exe
      "C:\Users\Admin\AppData\Local\Temp\57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Windows\cylpoxowxbhr.exe
        C:\Windows\cylpoxowxbhr.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2092
        • C:\Windows\cylpoxowxbhr.exe
          C:\Windows\cylpoxowxbhr.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:1520
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3672
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\578295~1.EXE
        3⤵
          PID:1140
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1860

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\cylpoxowxbhr.exe

      Filesize

      369KB

      MD5

      9009f09c28c128032a54dd758c608fb0

      SHA1

      023c1cd36ae7eaf17824e08b70f32641f8b8098a

      SHA256

      57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd

      SHA512

      606b5deaa9969ae04cf4a94e766d72eb295551ccd3fadd8c9a22c7e1be98a0f03c66116599c0a1518f35aa59685bd276c89499c300b3806ef7a0b0e2013e9347

    • C:\Windows\cylpoxowxbhr.exe

      Filesize

      369KB

      MD5

      9009f09c28c128032a54dd758c608fb0

      SHA1

      023c1cd36ae7eaf17824e08b70f32641f8b8098a

      SHA256

      57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd

      SHA512

      606b5deaa9969ae04cf4a94e766d72eb295551ccd3fadd8c9a22c7e1be98a0f03c66116599c0a1518f35aa59685bd276c89499c300b3806ef7a0b0e2013e9347

    • C:\Windows\cylpoxowxbhr.exe

      Filesize

      369KB

      MD5

      9009f09c28c128032a54dd758c608fb0

      SHA1

      023c1cd36ae7eaf17824e08b70f32641f8b8098a

      SHA256

      57829520d9161ecb5ccdbf320c40615bd13ec7a514f4d34d3f95534013ebcbfd

      SHA512

      606b5deaa9969ae04cf4a94e766d72eb295551ccd3fadd8c9a22c7e1be98a0f03c66116599c0a1518f35aa59685bd276c89499c300b3806ef7a0b0e2013e9347

    • memory/856-131-0x0000000000000000-mapping.dmp

    • memory/856-132-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/856-133-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/856-135-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/856-136-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/856-141-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1140-140-0x0000000000000000-mapping.dmp

    • memory/1444-134-0x00000000007A0000-0x00000000007A3000-memory.dmp

      Filesize

      12KB

    • memory/1444-130-0x00000000007A0000-0x00000000007A3000-memory.dmp

      Filesize

      12KB

    • memory/1520-142-0x0000000000000000-mapping.dmp

    • memory/1520-145-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1520-146-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1520-147-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1520-149-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/2092-137-0x0000000000000000-mapping.dmp

    • memory/3672-148-0x0000000000000000-mapping.dmp