Analysis

  • max time kernel
    166s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    03-07-2022 18:19

General

  • Target

    3af2655c4fc69d0ac9713bc32d00950a3f62e46bfacfec63d9028a8659fcd245.exe

  • Size

    424KB

  • MD5

    1f6c2ee7195acf760cb3be66590d70fb

  • SHA1

    483fe52b42e290a146b9b01ddd0aed4615a31508

  • SHA256

    3af2655c4fc69d0ac9713bc32d00950a3f62e46bfacfec63d9028a8659fcd245

  • SHA512

    a0fb9d84671c5db5dce2482a5b348b7ebc6d8af5cd098304c3ce43fa34f58aff15c90daaedeef5ddb2f852b44aba67b88fda69631a07ce88b4869fdee1f86934

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2632097139-1792035885-811742494-1000\_RECoVERY_+jdivf.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/31124EA0C012C73A 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/31124EA0C012C73A 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/31124EA0C012C73A 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/31124EA0C012C73A 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/31124EA0C012C73A http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/31124EA0C012C73A http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/31124EA0C012C73A *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/31124EA0C012C73A
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/31124EA0C012C73A

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/31124EA0C012C73A

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/31124EA0C012C73A

http://xlowfznrg4wf7dli.ONION/31124EA0C012C73A

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 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\3af2655c4fc69d0ac9713bc32d00950a3f62e46bfacfec63d9028a8659fcd245.exe
    "C:\Users\Admin\AppData\Local\Temp\3af2655c4fc69d0ac9713bc32d00950a3f62e46bfacfec63d9028a8659fcd245.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Windows\xnbggkjqgvwq.exe
      C:\Windows\xnbggkjqgvwq.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:4724
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4304
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\3AF265~1.EXE
      2⤵
        PID:4780
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2464

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\xnbggkjqgvwq.exe

      Filesize

      424KB

      MD5

      1f6c2ee7195acf760cb3be66590d70fb

      SHA1

      483fe52b42e290a146b9b01ddd0aed4615a31508

      SHA256

      3af2655c4fc69d0ac9713bc32d00950a3f62e46bfacfec63d9028a8659fcd245

      SHA512

      a0fb9d84671c5db5dce2482a5b348b7ebc6d8af5cd098304c3ce43fa34f58aff15c90daaedeef5ddb2f852b44aba67b88fda69631a07ce88b4869fdee1f86934

    • C:\Windows\xnbggkjqgvwq.exe

      Filesize

      424KB

      MD5

      1f6c2ee7195acf760cb3be66590d70fb

      SHA1

      483fe52b42e290a146b9b01ddd0aed4615a31508

      SHA256

      3af2655c4fc69d0ac9713bc32d00950a3f62e46bfacfec63d9028a8659fcd245

      SHA512

      a0fb9d84671c5db5dce2482a5b348b7ebc6d8af5cd098304c3ce43fa34f58aff15c90daaedeef5ddb2f852b44aba67b88fda69631a07ce88b4869fdee1f86934

    • memory/4304-145-0x0000000000000000-mapping.dmp

    • memory/4344-130-0x00000000022F0000-0x0000000002375000-memory.dmp

      Filesize

      532KB

    • memory/4344-131-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/4344-144-0x00000000022F0000-0x0000000002375000-memory.dmp

      Filesize

      532KB

    • memory/4724-135-0x0000000000000000-mapping.dmp

    • memory/4724-142-0x00000000009B0000-0x0000000000A35000-memory.dmp

      Filesize

      532KB

    • memory/4780-143-0x0000000000000000-mapping.dmp