Analysis

  • max time kernel
    152s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2022 16:11

General

  • Target

    5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a.exe

  • Size

    384KB

  • MD5

    644eaa7c99fcca51c624bff49d8c3050

  • SHA1

    69d8df44b7f8b9eeceeb2473757d90f82189a867

  • SHA256

    5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a

  • SHA512

    0c8ee8ba29aac9bd9c9d2cb9ca8dd80bb9eb321d48874a7a3662491038f7611df3f0cb79bca3d84084acfdbd6b5cdb4ca33b2f68dd5f2118ba14227e2639f84a

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3463845317-933582289-45817732-1000\Recovery+chypn.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 RSA-4096. More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-4096 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://tt54rfdjhb34rfbnknaerg.milerteddy.com/3486332A0E0D2F3 2. http://kkd47eh4hdjshb5t.angortra.at/3486332A0E0D2F3 3. http://ytrest84y5i456hghadefdsd.pontogrot.com/3486332A0E0D2F3 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/3486332A0E0D2F3 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://tt54rfdjhb34rfbnknaerg.milerteddy.com/3486332A0E0D2F3 http://kkd47eh4hdjshb5t.angortra.at/3486332A0E0D2F3 http://ytrest84y5i456hghadefdsd.pontogrot.com/3486332A0E0D2F3 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/3486332A0E0D2F3
URLs

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/3486332A0E0D2F3

http://kkd47eh4hdjshb5t.angortra.at/3486332A0E0D2F3

http://ytrest84y5i456hghadefdsd.pontogrot.com/3486332A0E0D2F3

http://xlowfznrg4wf7dli.ONION/3486332A0E0D2F3

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
  • 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 23 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a.exe
    "C:\Users\Admin\AppData\Local\Temp\5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4644
    • C:\Users\Admin\AppData\Local\Temp\5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a.exe
      "C:\Users\Admin\AppData\Local\Temp\5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2612
      • C:\Windows\geirymxsubpw.exe
        C:\Windows\geirymxsubpw.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4672
        • C:\Windows\geirymxsubpw.exe
          C:\Windows\geirymxsubpw.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:5012
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /noin teractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4412
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5BED0B~1.EXE
        3⤵
          PID:3560

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\geirymxsubpw.exe

      Filesize

      384KB

      MD5

      644eaa7c99fcca51c624bff49d8c3050

      SHA1

      69d8df44b7f8b9eeceeb2473757d90f82189a867

      SHA256

      5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a

      SHA512

      0c8ee8ba29aac9bd9c9d2cb9ca8dd80bb9eb321d48874a7a3662491038f7611df3f0cb79bca3d84084acfdbd6b5cdb4ca33b2f68dd5f2118ba14227e2639f84a

    • C:\Windows\geirymxsubpw.exe

      Filesize

      384KB

      MD5

      644eaa7c99fcca51c624bff49d8c3050

      SHA1

      69d8df44b7f8b9eeceeb2473757d90f82189a867

      SHA256

      5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a

      SHA512

      0c8ee8ba29aac9bd9c9d2cb9ca8dd80bb9eb321d48874a7a3662491038f7611df3f0cb79bca3d84084acfdbd6b5cdb4ca33b2f68dd5f2118ba14227e2639f84a

    • C:\Windows\geirymxsubpw.exe

      Filesize

      384KB

      MD5

      644eaa7c99fcca51c624bff49d8c3050

      SHA1

      69d8df44b7f8b9eeceeb2473757d90f82189a867

      SHA256

      5bed0b42438cb4bcc5a5dc9a5c441ae97acbb2b09dc80ec9affe06e8589b482a

      SHA512

      0c8ee8ba29aac9bd9c9d2cb9ca8dd80bb9eb321d48874a7a3662491038f7611df3f0cb79bca3d84084acfdbd6b5cdb4ca33b2f68dd5f2118ba14227e2639f84a

    • memory/2612-138-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2612-139-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2612-140-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2612-141-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2612-137-0x0000000000000000-mapping.dmp

    • memory/2612-147-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

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

    • memory/4412-155-0x0000000000000000-mapping.dmp

    • memory/4644-136-0x0000000000D60000-0x0000000000FE1000-memory.dmp

      Filesize

      2.5MB

    • memory/4644-135-0x0000000000D60000-0x0000000000FE1000-memory.dmp

      Filesize

      2.5MB

    • memory/4672-145-0x0000000000A80000-0x0000000000A83000-memory.dmp

      Filesize

      12KB

    • memory/4672-151-0x0000000000A80000-0x0000000000A83000-memory.dmp

      Filesize

      12KB

    • memory/4672-142-0x0000000000000000-mapping.dmp

    • memory/5012-152-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/5012-148-0x0000000000000000-mapping.dmp

    • memory/5012-153-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/5012-154-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/5012-156-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB