Analysis

  • max time kernel
    141s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    28-09-2021 08:24

General

  • Target

    42ebe9b09e9e2ee2d1c345632a571cbaf09fcad3be9662af661c2bce110cc09b.bin.sample.exe

  • Size

    196KB

  • MD5

    75a4117876741cc839d083cbeffd9e88

  • SHA1

    044f4d9fbe5f7fcaa350e6ae900f240bafd07c31

  • SHA256

    42ebe9b09e9e2ee2d1c345632a571cbaf09fcad3be9662af661c2bce110cc09b

  • SHA512

    77b1521650276dc61b47eaffd28ab7b03f61ee6842a7e296ceca8005966e2553d75942f3529aa6161850971629ac5fb4f2140328b6d550d5dd7f70a7a38b79be

Malware Config

Extracted

Path

C:\readme.txt

Family

conti

Ransom Note
All of your files are currently encrypted by CONTI strain. As you know (if you don't - just "google it"), all of the data that has been encrypted by our software cannot be recovered by any means without contacting our team directly. If you try to use any additional recovery software - the files might be damaged, so if you are willing to try - try it on the data of the lowest value. To make sure that we REALLY CAN get your data back - we offer you to decrypt 2 random files completely free of charge. You can contact our team directly for further instructions through our website : TOR VERSION : (you should download and install TOR browser first https://torproject.org) http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/ HTTPS VERSION : https://contirecovery.xyz/ YOU SHOULD BE AWARE! Just in case, if you try to ignore us. We've downloaded a pack of your internal data and are ready to publish it on out news website if you do not respond. So it will be better for both sides if you contact us as soon as possible. ---BEGIN ID--- SO9J669N2iFp7HADiEkeqEFp6JWP7GNxgCEaiFC86qriwAR6q68s6n4jIfvSDkbr ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.xyz/

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Modifies extensions of user files 7 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 46 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42ebe9b09e9e2ee2d1c345632a571cbaf09fcad3be9662af661c2bce110cc09b.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\42ebe9b09e9e2ee2d1c345632a571cbaf09fcad3be9662af661c2bce110cc09b.bin.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1144
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{C42FD895-B421-4A33-8B73-34420B94C6C4}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{C42FD895-B421-4A33-8B73-34420B94C6C4}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:472
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{10A95FEA-CE68-4673-91E9-44796907EA8F}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{10A95FEA-CE68-4673-91E9-44796907EA8F}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1812
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{3F8D846B-9DD4-48C1-9EB7-331601E45A01}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{3F8D846B-9DD4-48C1-9EB7-331601E45A01}'" delete
        3⤵
          PID:1108
      • C:\Windows\system32\cmd.exe
        cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{83DB695E-B6C4-4F19-94F5-5AB249FE6E4B}'" delete
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1748
        • C:\Windows\System32\wbem\WMIC.exe
          C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{83DB695E-B6C4-4F19-94F5-5AB249FE6E4B}'" delete
          3⤵
            PID:1572
        • C:\Windows\system32\cmd.exe
          cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{6E98F490-EC90-48A3-8095-7CAB9F53C350}'" delete
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2024
          • C:\Windows\System32\wbem\WMIC.exe
            C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{6E98F490-EC90-48A3-8095-7CAB9F53C350}'" delete
            3⤵
              PID:2020
          • C:\Windows\system32\cmd.exe
            cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{BE04AF18-D313-4450-8D00-0E635D2D4C97}'" delete
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1824
            • C:\Windows\System32\wbem\WMIC.exe
              C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{BE04AF18-D313-4450-8D00-0E635D2D4C97}'" delete
              3⤵
                PID:1960
            • C:\Windows\system32\cmd.exe
              cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{CEE4CCBC-073C-4640-96A7-6BA7CCA7CF92}'" delete
              2⤵
                PID:1304
                • C:\Windows\System32\wbem\WMIC.exe
                  C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{CEE4CCBC-073C-4640-96A7-6BA7CCA7CF92}'" delete
                  3⤵
                    PID:1592
                • C:\Windows\system32\cmd.exe
                  cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{865F3304-51C3-4B8F-A536-F05EC48E587F}'" delete
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1172
                  • C:\Windows\System32\wbem\WMIC.exe
                    C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{865F3304-51C3-4B8F-A536-F05EC48E587F}'" delete
                    3⤵
                      PID:768
                  • C:\Windows\system32\cmd.exe
                    cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{F66D88E2-B57B-4989-8ED8-F69EC00D6AED}'" delete
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:608
                    • C:\Windows\System32\wbem\WMIC.exe
                      C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{F66D88E2-B57B-4989-8ED8-F69EC00D6AED}'" delete
                      3⤵
                        PID:560
                    • C:\Windows\system32\cmd.exe
                      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{2D3F6F2F-1FEA-4EF5-B2F9-9AD4D3736A5B}'" delete
                      2⤵
                        PID:868
                        • C:\Windows\System32\wbem\WMIC.exe
                          C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{2D3F6F2F-1FEA-4EF5-B2F9-9AD4D3736A5B}'" delete
                          3⤵
                            PID:644
                        • C:\Windows\system32\cmd.exe
                          cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{3AB2448F-F186-4CD1-8044-F01D62EBD5C3}'" delete
                          2⤵
                            PID:1076
                            • C:\Windows\System32\wbem\WMIC.exe
                              C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{3AB2448F-F186-4CD1-8044-F01D62EBD5C3}'" delete
                              3⤵
                                PID:1260
                            • C:\Windows\system32\cmd.exe
                              cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{5E61C5BD-F1FA-4763-95D9-47A0D7BD5FDD}'" delete
                              2⤵
                                PID:1616
                                • C:\Windows\System32\wbem\WMIC.exe
                                  C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{5E61C5BD-F1FA-4763-95D9-47A0D7BD5FDD}'" delete
                                  3⤵
                                    PID:1004
                              • C:\Windows\system32\vssvc.exe
                                C:\Windows\system32\vssvc.exe
                                1⤵
                                • Suspicious use of AdjustPrivilegeToken
                                PID:1536

                              Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

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                              Downloads

                              • memory/472-55-0x0000000000000000-mapping.dmp

                              • memory/560-70-0x0000000000000000-mapping.dmp

                              • memory/608-69-0x0000000000000000-mapping.dmp

                              • memory/644-72-0x0000000000000000-mapping.dmp

                              • memory/768-68-0x0000000000000000-mapping.dmp

                              • memory/868-71-0x0000000000000000-mapping.dmp

                              • memory/984-56-0x0000000000000000-mapping.dmp

                              • memory/1004-76-0x0000000000000000-mapping.dmp

                              • memory/1076-73-0x0000000000000000-mapping.dmp

                              • memory/1108-59-0x0000000000000000-mapping.dmp

                              • memory/1144-53-0x0000000076581000-0x0000000076583000-memory.dmp

                                Filesize

                                8KB

                              • memory/1172-67-0x0000000000000000-mapping.dmp

                              • memory/1260-74-0x0000000000000000-mapping.dmp

                              • memory/1304-66-0x0000000000000000-mapping.dmp

                              • memory/1572-61-0x0000000000000000-mapping.dmp

                              • memory/1616-75-0x0000000000000000-mapping.dmp

                              • memory/1624-58-0x0000000000000000-mapping.dmp

                              • memory/1748-60-0x0000000000000000-mapping.dmp

                              • memory/1812-57-0x0000000000000000-mapping.dmp

                              • memory/1824-64-0x0000000000000000-mapping.dmp

                              • memory/1960-65-0x0000000000000000-mapping.dmp

                              • memory/2012-54-0x0000000000000000-mapping.dmp

                              • memory/2020-63-0x0000000000000000-mapping.dmp

                              • memory/2024-62-0x0000000000000000-mapping.dmp