Analysis

  • max time kernel
    12s
  • max time network
    16s
  • 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 05:36

General

  • Target

    5ea4a54b8778bef69dcfd4ea080e3fc7077a82797cdaa8ff60ac2214d3485248.exe

  • Size

    400KB

  • MD5

    937f2c33de9e38de79ad30ce7fc74705

  • SHA1

    cd58f0511142c588049dee66c3047b88bb57806d

  • SHA256

    5ea4a54b8778bef69dcfd4ea080e3fc7077a82797cdaa8ff60ac2214d3485248

  • SHA512

    aa3f1635783df2bdaf344129a925e1b4c6e4af7776f7b9c9a04610a775b2760c79177fad8acf3c5c833d28b7bc5dfd058eb86758debd13826afd01d13ea4fdcc

  • SSDEEP

    6144:m+5SY2+5yZzoW4Hm7XdTqr1+LC87iiFLd1//KSkl8aIrA6mJOl:lQVbz9qrcb7jtdlkNyoOl

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-929662420-1054238289-2961194603-1000\_RECoVERY_+mtmdo.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://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5894C6535838D884 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5894C6535838D884 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5894C6535838D884 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/5894C6535838D884 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5894C6535838D884 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5894C6535838D884 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5894C6535838D884 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/5894C6535838D884
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5894C6535838D884

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5894C6535838D884

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5894C6535838D884

http://xlowfznrg4wf7dli.ONION/5894C6535838D884

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 62 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\5ea4a54b8778bef69dcfd4ea080e3fc7077a82797cdaa8ff60ac2214d3485248.exe
    "C:\Users\Admin\AppData\Local\Temp\5ea4a54b8778bef69dcfd4ea080e3fc7077a82797cdaa8ff60ac2214d3485248.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4540
    • C:\Windows\fperjanqrhwm.exe
      C:\Windows\fperjanqrhwm.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:4512
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2664
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5EA4A5~1.EXE
      2⤵
        PID:4236
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4532

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\fperjanqrhwm.exe

      Filesize

      400KB

      MD5

      937f2c33de9e38de79ad30ce7fc74705

      SHA1

      cd58f0511142c588049dee66c3047b88bb57806d

      SHA256

      5ea4a54b8778bef69dcfd4ea080e3fc7077a82797cdaa8ff60ac2214d3485248

      SHA512

      aa3f1635783df2bdaf344129a925e1b4c6e4af7776f7b9c9a04610a775b2760c79177fad8acf3c5c833d28b7bc5dfd058eb86758debd13826afd01d13ea4fdcc

    • C:\Windows\fperjanqrhwm.exe

      Filesize

      400KB

      MD5

      937f2c33de9e38de79ad30ce7fc74705

      SHA1

      cd58f0511142c588049dee66c3047b88bb57806d

      SHA256

      5ea4a54b8778bef69dcfd4ea080e3fc7077a82797cdaa8ff60ac2214d3485248

      SHA512

      aa3f1635783df2bdaf344129a925e1b4c6e4af7776f7b9c9a04610a775b2760c79177fad8acf3c5c833d28b7bc5dfd058eb86758debd13826afd01d13ea4fdcc

    • memory/4512-148-0x0000000002130000-0x00000000021B4000-memory.dmp

      Filesize

      528KB

    • memory/4540-135-0x0000000000400000-0x00000000004A7000-memory.dmp

      Filesize

      668KB

    • memory/4540-139-0x0000000002230000-0x00000000022B4000-memory.dmp

      Filesize

      528KB