Analysis

  • max time kernel
    10s
  • max time network
    12s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2022 21:06

General

  • Target

    bc411cd472d250a249ab09422632950b8f69efdff9cc316cd223a7e41df5cb35.exe

  • Size

    424KB

  • MD5

    5bf4fb0a44f3a28b8075d38d0a5434ea

  • SHA1

    32b731cf212bc10d5b92d4ecf8729b0f14d40d30

  • SHA256

    bc411cd472d250a249ab09422632950b8f69efdff9cc316cd223a7e41df5cb35

  • SHA512

    ca1afc74968099d291db42dc18dc433204f4808cdfba66de8f5e838c547e12bd196047e8eee364772cdfeeb769525a30cb7e68f95fb4e9664b105aa54a45b167

  • SSDEEP

    6144:WlgxzBDqFbm4BwEaOufP6WJbWruNHTIwoMjJUZs6Cxa+OkkhdAq99oXbftChXW3d:GAVUnICWJK6lTwhsRoMq9MblCJxfS6

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2295526160-1155304984-640977766-1000\_RECoVERY_+nlweq.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/1548C5BB600E168 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/1548C5BB600E168 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/1548C5BB600E168 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/1548C5BB600E168 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/1548C5BB600E168 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/1548C5BB600E168 http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/1548C5BB600E168 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/1548C5BB600E168
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/1548C5BB600E168

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/1548C5BB600E168

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/1548C5BB600E168

http://xlowfznrg4wf7dli.ONION/1548C5BB600E168

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 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 56 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\bc411cd472d250a249ab09422632950b8f69efdff9cc316cd223a7e41df5cb35.exe
    "C:\Users\Admin\AppData\Local\Temp\bc411cd472d250a249ab09422632950b8f69efdff9cc316cd223a7e41df5cb35.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\topqraqfewnp.exe
      C:\Windows\topqraqfewnp.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:4916
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\BC411C~1.EXE
      2⤵
        PID:2180
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1160

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\topqraqfewnp.exe

      Filesize

      424KB

      MD5

      5bf4fb0a44f3a28b8075d38d0a5434ea

      SHA1

      32b731cf212bc10d5b92d4ecf8729b0f14d40d30

      SHA256

      bc411cd472d250a249ab09422632950b8f69efdff9cc316cd223a7e41df5cb35

      SHA512

      ca1afc74968099d291db42dc18dc433204f4808cdfba66de8f5e838c547e12bd196047e8eee364772cdfeeb769525a30cb7e68f95fb4e9664b105aa54a45b167

    • C:\Windows\topqraqfewnp.exe

      Filesize

      424KB

      MD5

      5bf4fb0a44f3a28b8075d38d0a5434ea

      SHA1

      32b731cf212bc10d5b92d4ecf8729b0f14d40d30

      SHA256

      bc411cd472d250a249ab09422632950b8f69efdff9cc316cd223a7e41df5cb35

      SHA512

      ca1afc74968099d291db42dc18dc433204f4808cdfba66de8f5e838c547e12bd196047e8eee364772cdfeeb769525a30cb7e68f95fb4e9664b105aa54a45b167

    • memory/1716-132-0x0000000000AF0000-0x0000000000B75000-memory.dmp

      Filesize

      532KB

    • memory/1716-133-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/1716-141-0x0000000000AF0000-0x0000000000B75000-memory.dmp

      Filesize

      532KB

    • memory/2180-140-0x0000000000000000-mapping.dmp

    • memory/4916-137-0x0000000000000000-mapping.dmp

    • memory/4916-146-0x0000000000990000-0x0000000000A15000-memory.dmp

      Filesize

      532KB

    • memory/5020-147-0x0000000000000000-mapping.dmp