Analysis

  • max time kernel
    152s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12-07-2022 12:31

General

  • Target

    4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518.exe

  • Size

    340KB

  • MD5

    74cdb42da9136b13a07e00a2bfc60323

  • SHA1

    f4e02831a49a93bbba08986c896ef189cd76a755

  • SHA256

    4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518

  • SHA512

    f36dffecf9a16427597275adbf9c6fbc4c672d0e987ea1fcfee043dc2df608601f088fe5e9f1e8a50a882bc5068afcf082c456f399cde7cc8a139a07897e22bb

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1809750270-3141839489-3074374771-1000\_RECOVERY_+cbxgx.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/BF3781466C17BF 2. http://tes543berda73i48fsdfsd.keratadze.at/BF3781466C17BF 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BF3781466C17BF 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/BF3781466C17BF 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BF3781466C17BF http://tes543berda73i48fsdfsd.keratadze.at/BF3781466C17BF http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BF3781466C17BF *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/BF3781466C17BF
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BF3781466C17BF

http://tes543berda73i48fsdfsd.keratadze.at/BF3781466C17BF

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BF3781466C17BF

http://xlowfznrg4wf7dli.ONION/BF3781466C17BF

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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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\4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518.exe
    "C:\Users\Admin\AppData\Local\Temp\4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Users\Admin\AppData\Local\Temp\4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518.exe
      "C:\Users\Admin\AppData\Local\Temp\4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3124
      • C:\Windows\beaghlqlbnfn.exe
        C:\Windows\beaghlqlbnfn.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4996
        • C:\Windows\beaghlqlbnfn.exe
          C:\Windows\beaghlqlbnfn.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:4860
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:5052
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4AAB3E~1.EXE
        3⤵
          PID:4380
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4152

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\beaghlqlbnfn.exe

      Filesize

      340KB

      MD5

      74cdb42da9136b13a07e00a2bfc60323

      SHA1

      f4e02831a49a93bbba08986c896ef189cd76a755

      SHA256

      4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518

      SHA512

      f36dffecf9a16427597275adbf9c6fbc4c672d0e987ea1fcfee043dc2df608601f088fe5e9f1e8a50a882bc5068afcf082c456f399cde7cc8a139a07897e22bb

    • C:\Windows\beaghlqlbnfn.exe

      Filesize

      340KB

      MD5

      74cdb42da9136b13a07e00a2bfc60323

      SHA1

      f4e02831a49a93bbba08986c896ef189cd76a755

      SHA256

      4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518

      SHA512

      f36dffecf9a16427597275adbf9c6fbc4c672d0e987ea1fcfee043dc2df608601f088fe5e9f1e8a50a882bc5068afcf082c456f399cde7cc8a139a07897e22bb

    • C:\Windows\beaghlqlbnfn.exe

      Filesize

      340KB

      MD5

      74cdb42da9136b13a07e00a2bfc60323

      SHA1

      f4e02831a49a93bbba08986c896ef189cd76a755

      SHA256

      4aab3e6ac278889322a964f069fa257ac2792dcd17293f8b9f0bfae12a4f7518

      SHA512

      f36dffecf9a16427597275adbf9c6fbc4c672d0e987ea1fcfee043dc2df608601f088fe5e9f1e8a50a882bc5068afcf082c456f399cde7cc8a139a07897e22bb

    • memory/3124-131-0x0000000000000000-mapping.dmp

    • memory/3124-132-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3124-133-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3124-135-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3124-136-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/3124-141-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4380-140-0x0000000000000000-mapping.dmp

    • memory/4860-142-0x0000000000000000-mapping.dmp

    • memory/4860-145-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4860-146-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4860-147-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4860-149-0x0000000000400000-0x0000000000485000-memory.dmp

      Filesize

      532KB

    • memory/4996-137-0x0000000000000000-mapping.dmp

    • memory/5052-148-0x0000000000000000-mapping.dmp

    • memory/5104-130-0x00000000023B0000-0x00000000023B3000-memory.dmp

      Filesize

      12KB

    • memory/5104-134-0x00000000023B0000-0x00000000023B3000-memory.dmp

      Filesize

      12KB