Analysis

  • max time kernel
    168s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-07-2022 08:11

General

  • Target

    469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3.exe

  • Size

    366KB

  • MD5

    6e8553bd03e63431388120b6a772e1ee

  • SHA1

    ab5ffbed5e461e453431a3ab1ea7019e555dee5f

  • SHA256

    469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3

  • SHA512

    c3a6c27eb4d04f8afe42fb7f4f242e1c61a38f684556eda84925be75b94584aba0f7908a09050aeb03d308cdc238210054aef5bd3b37a9b30e29ce18ae037960

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3751123196-3323558407-1869646069-1000\_RECoVERY_+oxbru.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/A3D1805FDE1532E 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/A3D1805FDE1532E 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/A3D1805FDE1532E 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/A3D1805FDE1532E 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/A3D1805FDE1532E http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/A3D1805FDE1532E http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/A3D1805FDE1532E *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/A3D1805FDE1532E
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/A3D1805FDE1532E

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/A3D1805FDE1532E

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/A3D1805FDE1532E

http://xlowfznrg4wf7dli.ONION/A3D1805FDE1532E

Signatures

  • TeslaCrypt, AlphaCrypt

    Ransomware based on CryptoLocker. Shut down by the developers in 2016.

  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

  • 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\469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3.exe
    "C:\Users\Admin\AppData\Local\Temp\469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Users\Admin\AppData\Local\Temp\469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3.exe
      "C:\Users\Admin\AppData\Local\Temp\469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:464
      • C:\Windows\ptbtqcudpgnn.exe
        C:\Windows\ptbtqcudpgnn.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3500
        • C:\Windows\ptbtqcudpgnn.exe
          C:\Windows\ptbtqcudpgnn.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:1180
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1836
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\469F8D~1.EXE
        3⤵
          PID:2904
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2264

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\ptbtqcudpgnn.exe

      Filesize

      366KB

      MD5

      6e8553bd03e63431388120b6a772e1ee

      SHA1

      ab5ffbed5e461e453431a3ab1ea7019e555dee5f

      SHA256

      469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3

      SHA512

      c3a6c27eb4d04f8afe42fb7f4f242e1c61a38f684556eda84925be75b94584aba0f7908a09050aeb03d308cdc238210054aef5bd3b37a9b30e29ce18ae037960

    • C:\Windows\ptbtqcudpgnn.exe

      Filesize

      366KB

      MD5

      6e8553bd03e63431388120b6a772e1ee

      SHA1

      ab5ffbed5e461e453431a3ab1ea7019e555dee5f

      SHA256

      469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3

      SHA512

      c3a6c27eb4d04f8afe42fb7f4f242e1c61a38f684556eda84925be75b94584aba0f7908a09050aeb03d308cdc238210054aef5bd3b37a9b30e29ce18ae037960

    • C:\Windows\ptbtqcudpgnn.exe

      Filesize

      366KB

      MD5

      6e8553bd03e63431388120b6a772e1ee

      SHA1

      ab5ffbed5e461e453431a3ab1ea7019e555dee5f

      SHA256

      469f8d17cdcd46cd23ab807ba3305a888d0e2c801fa7c6499b0f719444d71bd3

      SHA512

      c3a6c27eb4d04f8afe42fb7f4f242e1c61a38f684556eda84925be75b94584aba0f7908a09050aeb03d308cdc238210054aef5bd3b37a9b30e29ce18ae037960

    • memory/464-142-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/464-132-0x0000000000000000-mapping.dmp

    • memory/464-134-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/464-136-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/464-137-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/464-133-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1180-143-0x0000000000000000-mapping.dmp

    • memory/1180-146-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1180-147-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1180-148-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/1836-149-0x0000000000000000-mapping.dmp

    • memory/2904-141-0x0000000000000000-mapping.dmp

    • memory/3428-135-0x00000000024B0000-0x00000000024B3000-memory.dmp

      Filesize

      12KB

    • memory/3428-130-0x00000000024B0000-0x00000000024B3000-memory.dmp

      Filesize

      12KB

    • memory/3428-131-0x00000000024B0000-0x00000000024B3000-memory.dmp

      Filesize

      12KB

    • memory/3500-138-0x0000000000000000-mapping.dmp