Analysis

  • max time kernel
    188s
  • max time network
    197s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    01-08-2022 05:36

General

  • Target

    5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1.exe

  • Size

    369KB

  • MD5

    5b638a15ecb9b00a6a0aef70de059ff8

  • SHA1

    c1ab227d0fe218b1cca7415b02eb78beb6d69e1f

  • SHA256

    5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1

  • SHA512

    90c90884116058a9de73c95adb92edbf12410b7ef1a92c1436342789c57565d06cb69cceecbde91782a03a7cb6dd13abaa390c68e1a47db34f7ed58d53498b01

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-4084403625-2215941253-1760665084-1000\_RECoVERY_+akfps.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://yyre45dbvn2nhbefbmh.begumvelic.at/16971B6CFA361E9A 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/16971B6CFA361E9A 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/16971B6CFA361E9A 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/16971B6CFA361E9A 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/16971B6CFA361E9A http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/16971B6CFA361E9A http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/16971B6CFA361E9A *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/16971B6CFA361E9A
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/16971B6CFA361E9A

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/16971B6CFA361E9A

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/16971B6CFA361E9A

http://xlowfznrg4wf7dli.ONION/16971B6CFA361E9A

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 2 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 56 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.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1.exe
    "C:\Users\Admin\AppData\Local\Temp\5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Users\Admin\AppData\Local\Temp\5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1.exe
      "C:\Users\Admin\AppData\Local\Temp\5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1.exe"
      2⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1212
      • C:\Windows\dixsihwewqla.exe
        C:\Windows\dixsihwewqla.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Windows\dixsihwewqla.exe
          C:\Windows\dixsihwewqla.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:1572
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1496
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5CB0C4~1.EXE
        3⤵
        • Deletes itself
        PID:1456
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1288

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\dixsihwewqla.exe

    Filesize

    369KB

    MD5

    5b638a15ecb9b00a6a0aef70de059ff8

    SHA1

    c1ab227d0fe218b1cca7415b02eb78beb6d69e1f

    SHA256

    5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1

    SHA512

    90c90884116058a9de73c95adb92edbf12410b7ef1a92c1436342789c57565d06cb69cceecbde91782a03a7cb6dd13abaa390c68e1a47db34f7ed58d53498b01

  • C:\Windows\dixsihwewqla.exe

    Filesize

    369KB

    MD5

    5b638a15ecb9b00a6a0aef70de059ff8

    SHA1

    c1ab227d0fe218b1cca7415b02eb78beb6d69e1f

    SHA256

    5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1

    SHA512

    90c90884116058a9de73c95adb92edbf12410b7ef1a92c1436342789c57565d06cb69cceecbde91782a03a7cb6dd13abaa390c68e1a47db34f7ed58d53498b01

  • C:\Windows\dixsihwewqla.exe

    Filesize

    369KB

    MD5

    5b638a15ecb9b00a6a0aef70de059ff8

    SHA1

    c1ab227d0fe218b1cca7415b02eb78beb6d69e1f

    SHA256

    5cb0c4b21927d654e5f0b1efe8b8ec80dc693c463b4de29f6b1e591105c584d1

    SHA512

    90c90884116058a9de73c95adb92edbf12410b7ef1a92c1436342789c57565d06cb69cceecbde91782a03a7cb6dd13abaa390c68e1a47db34f7ed58d53498b01

  • memory/1212-65-0x00000000004164E8-mapping.dmp

  • memory/1212-73-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-62-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-55-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-56-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-64-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-68-0x00000000762D1000-0x00000000762D3000-memory.dmp

    Filesize

    8KB

  • memory/1212-69-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-70-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-75-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-58-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1212-60-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1456-74-0x0000000000000000-mapping.dmp

  • memory/1496-94-0x0000000000000000-mapping.dmp

  • memory/1572-87-0x00000000004164E8-mapping.dmp

  • memory/1572-91-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1572-92-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1572-93-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1992-67-0x0000000000340000-0x0000000000343000-memory.dmp

    Filesize

    12KB

  • memory/1992-54-0x0000000000340000-0x0000000000343000-memory.dmp

    Filesize

    12KB

  • memory/2040-71-0x0000000000000000-mapping.dmp