Analysis

  • max time kernel
    10s
  • max time network
    10s
  • 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 22:23

General

  • Target

    c134a0ac2809efa669ab3e69597873916f629aca0581664159c4d101a6adc609.exe

  • Size

    328KB

  • MD5

    77b3d8d5850b5735e58db6fc281f763f

  • SHA1

    cd4813d5533f1894f8b6ece019c577f46d5fa4ec

  • SHA256

    c134a0ac2809efa669ab3e69597873916f629aca0581664159c4d101a6adc609

  • SHA512

    728f6691a97153a1159f2fcdc2fb7257fe38eef2a3b900ae1d44ad8235f943a015fc74b27839a0d1bca7aba7af10e19a785b3795571310c1a11711b23a20fd2f

  • SSDEEP

    6144:F4MKA86q6kcKPqCAOFPmvSNQgstAw/u5jp2hnU4ZcRdN1Sgg68:F9x1KNRmKN+/Mk3eBU

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2295526160-1155304984-640977766-1000\_RECoVERY_+hllwe.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 RSA4096 More information about the encryption keys using RSA4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA4096 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://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/F1835DAB642098A3 2 - http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/F1835DAB642098A3 3 - http://yyre45dbvn2nhbefbmh.begumvelic.at/F1835DAB642098A3 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/F1835DAB642098A3 4 - Follow the instructions on the site IMPORTANT INFORMATION Your personal pages http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/F1835DAB642098A3 http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/F1835DAB642098A3 http://yyre45dbvn2nhbefbmh.begumvelic.at/F1835DAB642098A3 Your personal page Tor-Browser xlowfznrg4wf7dli.ONION/F1835DAB642098A3
URLs

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/F1835DAB642098A3

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/F1835DAB642098A3

http://yyre45dbvn2nhbefbmh.begumvelic.at/F1835DAB642098A3

http://xlowfznrg4wf7dli.ONION/F1835DAB642098A3

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 64 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\c134a0ac2809efa669ab3e69597873916f629aca0581664159c4d101a6adc609.exe
    "C:\Users\Admin\AppData\Local\Temp\c134a0ac2809efa669ab3e69597873916f629aca0581664159c4d101a6adc609.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Windows\aqaocxnvyhen.exe
      C:\Windows\aqaocxnvyhen.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:4112
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3560
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\C134A0~1.EXE
      2⤵
        PID:828
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:220

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\aqaocxnvyhen.exe

      Filesize

      328KB

      MD5

      77b3d8d5850b5735e58db6fc281f763f

      SHA1

      cd4813d5533f1894f8b6ece019c577f46d5fa4ec

      SHA256

      c134a0ac2809efa669ab3e69597873916f629aca0581664159c4d101a6adc609

      SHA512

      728f6691a97153a1159f2fcdc2fb7257fe38eef2a3b900ae1d44ad8235f943a015fc74b27839a0d1bca7aba7af10e19a785b3795571310c1a11711b23a20fd2f

    • C:\Windows\aqaocxnvyhen.exe

      Filesize

      328KB

      MD5

      77b3d8d5850b5735e58db6fc281f763f

      SHA1

      cd4813d5533f1894f8b6ece019c577f46d5fa4ec

      SHA256

      c134a0ac2809efa669ab3e69597873916f629aca0581664159c4d101a6adc609

      SHA512

      728f6691a97153a1159f2fcdc2fb7257fe38eef2a3b900ae1d44ad8235f943a015fc74b27839a0d1bca7aba7af10e19a785b3795571310c1a11711b23a20fd2f

    • memory/828-144-0x0000000000000000-mapping.dmp

    • memory/2860-132-0x0000000000400000-0x0000000000495000-memory.dmp

      Filesize

      596KB

    • memory/2860-136-0x0000000002230000-0x00000000022B5000-memory.dmp

      Filesize

      532KB

    • memory/3560-146-0x0000000000000000-mapping.dmp

    • memory/4112-137-0x0000000000000000-mapping.dmp

    • memory/4112-145-0x0000000002140000-0x00000000021C5000-memory.dmp

      Filesize

      532KB