Analysis

  • max time kernel
    850s
  • max time network
    901s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    24-08-2021 05:46

General

  • Target

    e3f236e4aeb73f8f8f0caebe46f53abbb2f71fa4b266a34ab50e01933709e877.exe

  • Size

    151KB

  • MD5

    123511227718f17b3dec5431d5ae87f3

  • SHA1

    307088ae7027b55541311fd70a9337ff3709fccf

  • SHA256

    e3f236e4aeb73f8f8f0caebe46f53abbb2f71fa4b266a34ab50e01933709e877

  • SHA512

    182a45c60c0c14d55e40c7941836d7d658623a66ce7760eb71d8836ffa7974a0d1d3132b919fad921abecc9215ce458f06e563417c70682a9935a02d8053b234

Malware Config

Extracted

Path

C:\Program Files\7-Zip\Restore-My-Files.txt

Family

lockbit

Ransom Note
All your important files are encrypted! Any attempts to restore your files with the thrid-party software will be fatal for your files! RESTORE YOU DATA POSIBLE ONLY BUYING private key from us. There is only one way to get your files back: | 1. Download Tor browser - https://www.torproject.org/ and install it. | 2. Open link in TOR browser - http://lockbitks2tvnmwk.onion/?805244B9FB48720EC061B39958293273 This link only works in Tor Browser! | 3. Follow the instructions on this page ### Attention! ### # Do not rename encrypted files. # Do not try to decrypt using third party software, it may cause permanent data loss. # Decryption of your files with the help of third parties may cause increased price(they add their fee to our). # Tor Browser may be blocked in your country or corporate network. Use https://bridges.torproject.org or use Tor Browser over VPN. # Tor Browser user manual https://tb-manual.torproject.org/about !!! We also download huge amount of your private data, including finance information, clients personal info, network diagrams, passwords and so on. Don't forget about GDPR.
URLs

http://lockbitks2tvnmwk.onion/?805244B9FB48720EC061B39958293273

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Slate\Restore-My-Files.txt

Ransom Note
��+~ʼnv��R����8�}�\D��㰻� 1� Kj�������M�9drؑ��t nb ?G>N/E��.4`Oi��Y��%sҫ�W�B_L��M�� �7��. �H4躐? ��~�+��s38V���tgTTu���9Ӿ�P�qa��������������"ѷ�����<�u ڪ��/{,�� �<{Y�ǣ�b:X�1����U��K��?���h��QГ� ��o��kwk{��(����;.s�@��&�β�N�w_�7���c}��=���y���cg�����1W�SQ�4g�ş���$��QeX���\?T��0z�u���pm}e��\m��9��P?��w0ۮzg��K��K�(=ţzM�]k�Ǘ��E��U^>C�Xd� ?�Qdǜ}o듁���P�8�ߵG�}�RUHA�����@�4�&��G�T������"�Fe<�@��β >���� �X�G�G#��� �0U�W�h)5�/�۵2�H�!��}y�*�2nR��B5�B#�/N�U&��^D�0R���~�b�:�� ���J���OɠA����y USsd�&q-�qe�r�ѝW\���N��2�Ħ{�y�<X�+��S�5�r���o�i+[����W2Cwzx+��D�R/��.� ��l49��r���m��얱�����Q1�jmp�����b]N���U;�����"#�� #-ƣF��7Nf��s;�'5��f���x�1e�4 �r��.��$��:��� ,2���Fv�dk���,'�� ��AgF!��.��`�F� ��C/h��sF�)6br�ɓo�:�� !k��!�Lb�F1Q��?6:?gˌ��Q��C�w#ݱ��<�=��݅\�֙8���J�Ya���,&�#���C^�N?��f"A��U���"W6�d�#��qg�Դ��އ�b��.mg?E���긋O�<1�?*l��1�l)�?�~�H�H�A �|GsSC�.9LN��{�b�$abL1q������A�Y��<����"%��J�m��@����c��7$*��h�����yk�3�� ���� �!���9\���r��dE>���<��'�E�g�A6���9m��0T�h8V����B~6��!��+�Z���lծ׸oR�\��k�t����k�d:jЇ��� S��=���BgGv������jѭ*���!l-�!�U�;�� �����i�)I���݃"{��u�}�KD9��u�(���OOz�Q�9��O[�m��,f�Gh�����c� xCL�Qb��h�������"Ig9r� �eņR��I��������� "wX�\�ü��#o&�N��,;��ɪ$�w�*�x�)6dW*�x5!wܴ�h�����O^X|`�́�B��������53Y�Xu ��z ��_gfI�un u~;dʭ�$�+xi�,jE�Zg����������A��-7p�0�ؖ��G�~�*�v%��R�a�B�v��c}��� �l�����H�F�R2�#���3B��kP�U�ّg9�RD��Hr�1n��28xAll your important files are encrypted! Any attempts to restore your files with the thrid-party software will be fatal for your files! RESTORE YOU DATA POSIBLE ONLY BUYING private key from us. There is only one way to get your files back: | 1. Download Tor browser - https://www.torproject.org/ and install it. | 2. Open link in TOR browser - http://lockbitks2tvnmwk.onion/?805244B9FB48720EC061B39958293273 This link only works in Tor Browser! | 3. Follow the instructions on this page ### Attention! ### # Do not rename encrypted files. # Do not try to decrypt using third party software, it may cause permanent data loss. # Decryption of your files with the help of third parties may cause increased price(they add their fee to our). # Tor Browser may be blocked in your country or corporate network. Use https://bridges.torproject.org or use Tor Browser over VPN. # Tor Browser user manual https://tb-manual.torproject.org/about !!! We also download huge amount of your private data, including finance information, clients personal info, network diagrams, passwords and so on. Don't forget about GDPR.
URLs

http://lockbitks2tvnmwk.onion/?805244B9FB48720EC061B39958293273

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e3f236e4aeb73f8f8f0caebe46f53abbb2f71fa4b266a34ab50e01933709e877.exe
    "C:\Users\Admin\AppData\Local\Temp\e3f236e4aeb73f8f8f0caebe46f53abbb2f71fa4b266a34ab50e01933709e877.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1744
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1328
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1872
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2724
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2736
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:2748
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1468
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2816
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2888
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2936

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Command-Line Interface

      1
      T1059

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      File Deletion

      3
      T1107

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Impact

      Inhibit System Recovery

      4
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1032-60-0x0000000075591000-0x0000000075593000-memory.dmp
        Filesize

        8KB

      • memory/1328-62-0x0000000000000000-mapping.dmp
      • memory/1744-61-0x0000000000000000-mapping.dmp
      • memory/1872-63-0x0000000000000000-mapping.dmp
      • memory/2724-64-0x0000000000000000-mapping.dmp
      • memory/2736-65-0x0000000000000000-mapping.dmp
      • memory/2748-66-0x0000000000000000-mapping.dmp
      • memory/2748-67-0x000007FEFB991000-0x000007FEFB993000-memory.dmp
        Filesize

        8KB