Analysis

  • max time kernel
    11s
  • max time network
    11s
  • 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 09:26

General

  • Target

    8f236eac10488a8498785458219778998a29433fd1a2ff0b98ccbb9d7cc9ed0d.exe

  • Size

    424KB

  • MD5

    e384658bd4a76b34bc458f25c064a99c

  • SHA1

    89b61393358caee1c2b834b8947d5fa1145df352

  • SHA256

    8f236eac10488a8498785458219778998a29433fd1a2ff0b98ccbb9d7cc9ed0d

  • SHA512

    0191c95252a83c477b43ded6484ff7aed2fa86fa95b2c6065abfe22e1312ce85e4bde7afe7704f913bf5290b7eda9e104987f91d1373a1272776aa196b02556d

  • SSDEEP

    12288:Q8DHMRGy57LfvdOkoy3ATY5r4TblCJxfS6:Q8IT9FOGrwOR1

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2629973501-4017243118-3254762364-1000\_RECoVERY_+itesm.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/D23D207936A2D7E6 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D23D207936A2D7E6 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D23D207936A2D7E6 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/D23D207936A2D7E6 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/D23D207936A2D7E6 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D23D207936A2D7E6 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D23D207936A2D7E6 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/D23D207936A2D7E6
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/D23D207936A2D7E6

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D23D207936A2D7E6

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D23D207936A2D7E6

http://xlowfznrg4wf7dli.ONION/D23D207936A2D7E6

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\8f236eac10488a8498785458219778998a29433fd1a2ff0b98ccbb9d7cc9ed0d.exe
    "C:\Users\Admin\AppData\Local\Temp\8f236eac10488a8498785458219778998a29433fd1a2ff0b98ccbb9d7cc9ed0d.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Windows\ucnsqbrepjly.exe
      C:\Windows\ucnsqbrepjly.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:312
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\8F236E~1.EXE
      2⤵
        PID:3088
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5048

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\ucnsqbrepjly.exe

      Filesize

      424KB

      MD5

      e384658bd4a76b34bc458f25c064a99c

      SHA1

      89b61393358caee1c2b834b8947d5fa1145df352

      SHA256

      8f236eac10488a8498785458219778998a29433fd1a2ff0b98ccbb9d7cc9ed0d

      SHA512

      0191c95252a83c477b43ded6484ff7aed2fa86fa95b2c6065abfe22e1312ce85e4bde7afe7704f913bf5290b7eda9e104987f91d1373a1272776aa196b02556d

    • C:\Windows\ucnsqbrepjly.exe

      Filesize

      424KB

      MD5

      e384658bd4a76b34bc458f25c064a99c

      SHA1

      89b61393358caee1c2b834b8947d5fa1145df352

      SHA256

      8f236eac10488a8498785458219778998a29433fd1a2ff0b98ccbb9d7cc9ed0d

      SHA512

      0191c95252a83c477b43ded6484ff7aed2fa86fa95b2c6065abfe22e1312ce85e4bde7afe7704f913bf5290b7eda9e104987f91d1373a1272776aa196b02556d

    • memory/312-137-0x0000000000000000-mapping.dmp

    • memory/312-145-0x00000000009A0000-0x0000000000A25000-memory.dmp

      Filesize

      532KB

    • memory/3088-140-0x0000000000000000-mapping.dmp

    • memory/3456-146-0x0000000000000000-mapping.dmp

    • memory/3904-132-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/3904-136-0x0000000000790000-0x0000000000815000-memory.dmp

      Filesize

      532KB