Analysis

  • max time kernel
    174s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25-06-2022 22:10

General

  • Target

    37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1.exe

  • Size

    352KB

  • MD5

    2a6d24e8860bbd84be02f3062d16a753

  • SHA1

    f7d4cf1c34c98c365b6d0db5da54fffc1f6cf70d

  • SHA256

    37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1

  • SHA512

    602cd0a0d3d3fc7c55a21fc43672e5611044f450e10b13df597504867ef62d58dbef4e1730fdff4c1d0c7bfe6d43503de3827d3f407788e937e886593bd2412b

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2632097139-1792035885-811742494-1000\_RECOVERY_+cwgom.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://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/E17F3E983B9C3E0 2. http://tes543berda73i48fsdfsd.keratadze.at/E17F3E983B9C3E0 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/E17F3E983B9C3E0 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/E17F3E983B9C3E0 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/E17F3E983B9C3E0 http://tes543berda73i48fsdfsd.keratadze.at/E17F3E983B9C3E0 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/E17F3E983B9C3E0 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/E17F3E983B9C3E0
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/E17F3E983B9C3E0

http://tes543berda73i48fsdfsd.keratadze.at/E17F3E983B9C3E0

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/E17F3E983B9C3E0

http://xlowfznrg4wf7dli.ONION/E17F3E983B9C3E0

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\37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1.exe
    "C:\Users\Admin\AppData\Local\Temp\37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Users\Admin\AppData\Local\Temp\37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1.exe
      "C:\Users\Admin\AppData\Local\Temp\37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3664
      • C:\Windows\gielcxccwdtq.exe
        C:\Windows\gielcxccwdtq.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4100
        • C:\Windows\gielcxccwdtq.exe
          C:\Windows\gielcxccwdtq.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:5076
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3836
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\37C840~1.EXE
        3⤵
          PID:1484
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4936

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\gielcxccwdtq.exe

      Filesize

      352KB

      MD5

      2a6d24e8860bbd84be02f3062d16a753

      SHA1

      f7d4cf1c34c98c365b6d0db5da54fffc1f6cf70d

      SHA256

      37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1

      SHA512

      602cd0a0d3d3fc7c55a21fc43672e5611044f450e10b13df597504867ef62d58dbef4e1730fdff4c1d0c7bfe6d43503de3827d3f407788e937e886593bd2412b

    • C:\Windows\gielcxccwdtq.exe

      Filesize

      352KB

      MD5

      2a6d24e8860bbd84be02f3062d16a753

      SHA1

      f7d4cf1c34c98c365b6d0db5da54fffc1f6cf70d

      SHA256

      37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1

      SHA512

      602cd0a0d3d3fc7c55a21fc43672e5611044f450e10b13df597504867ef62d58dbef4e1730fdff4c1d0c7bfe6d43503de3827d3f407788e937e886593bd2412b

    • C:\Windows\gielcxccwdtq.exe

      Filesize

      352KB

      MD5

      2a6d24e8860bbd84be02f3062d16a753

      SHA1

      f7d4cf1c34c98c365b6d0db5da54fffc1f6cf70d

      SHA256

      37c84094c452b235cc310346dea26829afe3e714383ccfa03beeaadd952200e1

      SHA512

      602cd0a0d3d3fc7c55a21fc43672e5611044f450e10b13df597504867ef62d58dbef4e1730fdff4c1d0c7bfe6d43503de3827d3f407788e937e886593bd2412b

    • memory/1484-140-0x0000000000000000-mapping.dmp

    • memory/2172-134-0x0000000002660000-0x0000000002663000-memory.dmp

      Filesize

      12KB

    • memory/2172-130-0x0000000002660000-0x0000000002663000-memory.dmp

      Filesize

      12KB

    • memory/3664-141-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3664-136-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3664-133-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3664-132-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3664-135-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3664-131-0x0000000000000000-mapping.dmp

    • memory/3836-148-0x0000000000000000-mapping.dmp

    • memory/4100-137-0x0000000000000000-mapping.dmp

    • memory/5076-142-0x0000000000000000-mapping.dmp

    • memory/5076-145-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/5076-146-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/5076-147-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/5076-149-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB