Analysis

  • max time kernel
    157s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-07-2022 08:51

General

  • Target

    466a0840ed6f4484f26afb630c6875cc6d9ebd4a968ee2808b801d89fcb31c4b.exe

  • Size

    424KB

  • MD5

    4ee4303c494680602137222eced50e71

  • SHA1

    3783dd9fbde986cc57b57170ac82d20ffeb7e3f3

  • SHA256

    466a0840ed6f4484f26afb630c6875cc6d9ebd4a968ee2808b801d89fcb31c4b

  • SHA512

    e6bb5129945cc1f4c69a6821bf9596cad72d7c0e9686bacd435365c9417e9a20b649ec59a4cb72875a43eb1a8a6aebc372d004dc3aedbe5a4374f002225e00c0

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3751123196-3323558407-1869646069-1000\_RECoVERY_+lmsnf.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/DC351A218A63E6 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/DC351A218A63E6 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/DC351A218A63E6 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/DC351A218A63E6 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/DC351A218A63E6 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/DC351A218A63E6 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/DC351A218A63E6 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/DC351A218A63E6
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/DC351A218A63E6

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/DC351A218A63E6

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/DC351A218A63E6

http://xlowfznrg4wf7dli.ONION/DC351A218A63E6

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\466a0840ed6f4484f26afb630c6875cc6d9ebd4a968ee2808b801d89fcb31c4b.exe
    "C:\Users\Admin\AppData\Local\Temp\466a0840ed6f4484f26afb630c6875cc6d9ebd4a968ee2808b801d89fcb31c4b.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Windows\xunfkusajaif.exe
      C:\Windows\xunfkusajaif.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:3712
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4664
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\466A08~1.EXE
      2⤵
        PID:2256
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2948

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\xunfkusajaif.exe

      Filesize

      424KB

      MD5

      4ee4303c494680602137222eced50e71

      SHA1

      3783dd9fbde986cc57b57170ac82d20ffeb7e3f3

      SHA256

      466a0840ed6f4484f26afb630c6875cc6d9ebd4a968ee2808b801d89fcb31c4b

      SHA512

      e6bb5129945cc1f4c69a6821bf9596cad72d7c0e9686bacd435365c9417e9a20b649ec59a4cb72875a43eb1a8a6aebc372d004dc3aedbe5a4374f002225e00c0

    • C:\Windows\xunfkusajaif.exe

      Filesize

      424KB

      MD5

      4ee4303c494680602137222eced50e71

      SHA1

      3783dd9fbde986cc57b57170ac82d20ffeb7e3f3

      SHA256

      466a0840ed6f4484f26afb630c6875cc6d9ebd4a968ee2808b801d89fcb31c4b

      SHA512

      e6bb5129945cc1f4c69a6821bf9596cad72d7c0e9686bacd435365c9417e9a20b649ec59a4cb72875a43eb1a8a6aebc372d004dc3aedbe5a4374f002225e00c0

    • memory/2256-138-0x0000000000000000-mapping.dmp

    • memory/3712-135-0x0000000000000000-mapping.dmp

    • memory/3712-144-0x0000000002160000-0x00000000021E5000-memory.dmp

      Filesize

      532KB

    • memory/4052-130-0x0000000002290000-0x0000000002315000-memory.dmp

      Filesize

      532KB

    • memory/4052-131-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/4052-139-0x0000000002290000-0x0000000002315000-memory.dmp

      Filesize

      532KB

    • memory/4664-145-0x0000000000000000-mapping.dmp