Analysis

  • max time kernel
    91s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:21

General

  • Target

    7ffb26239f07b4f490c85a893df5a473fa39eba5d12c4ed674403ebd631f08c0.exe

  • Size

    602KB

  • MD5

    4da580d72162588e0b5ead81cae23007

  • SHA1

    109383ffb0d87ad1a692348d7221f9d33999944e

  • SHA256

    7ffb26239f07b4f490c85a893df5a473fa39eba5d12c4ed674403ebd631f08c0

  • SHA512

    87ec232210ad8812926930f08442b78326e6602a10f6ac99dfd65fff8a043ad0220c9f652a752558479a4efc180feb050e68d8cbdde638eaa94774bceb7324b2

  • SSDEEP

    12288:cIny5DYTg1MsClF/RyooiSvmz3ye6WlIcUomhn3u:6UTg1MsCvPDDee6EMV

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ffb26239f07b4f490c85a893df5a473fa39eba5d12c4ed674403ebd631f08c0.exe
    "C:\Users\Admin\AppData\Local\Temp\7ffb26239f07b4f490c85a893df5a473fa39eba5d12c4ed674403ebd631f08c0.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4156
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:524
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2892
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3844
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4932
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3524
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2064
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:816
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3644
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3316
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4500
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4600

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nstF757.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1715bc2cd45754d3a99e35b10c737c1b

            SHA1

            b301c5a1b5edf36258987384c7263dc975bac1c6

            SHA256

            206c6c3acdce4e17c4df843bf5a8930f65af9fef397de1650d037cac8dc6516a

            SHA512

            14e6cc749d9d7a8eb3db60edafdecdf12ab864302c60181352cb9c5d9bf3b0c2fdb1f836015eedd8e0184f832f486d5662020a565579c62b824f660bdc8cc78e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1715bc2cd45754d3a99e35b10c737c1b

            SHA1

            b301c5a1b5edf36258987384c7263dc975bac1c6

            SHA256

            206c6c3acdce4e17c4df843bf5a8930f65af9fef397de1650d037cac8dc6516a

            SHA512

            14e6cc749d9d7a8eb3db60edafdecdf12ab864302c60181352cb9c5d9bf3b0c2fdb1f836015eedd8e0184f832f486d5662020a565579c62b824f660bdc8cc78e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1715bc2cd45754d3a99e35b10c737c1b

            SHA1

            b301c5a1b5edf36258987384c7263dc975bac1c6

            SHA256

            206c6c3acdce4e17c4df843bf5a8930f65af9fef397de1650d037cac8dc6516a

            SHA512

            14e6cc749d9d7a8eb3db60edafdecdf12ab864302c60181352cb9c5d9bf3b0c2fdb1f836015eedd8e0184f832f486d5662020a565579c62b824f660bdc8cc78e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1715bc2cd45754d3a99e35b10c737c1b

            SHA1

            b301c5a1b5edf36258987384c7263dc975bac1c6

            SHA256

            206c6c3acdce4e17c4df843bf5a8930f65af9fef397de1650d037cac8dc6516a

            SHA512

            14e6cc749d9d7a8eb3db60edafdecdf12ab864302c60181352cb9c5d9bf3b0c2fdb1f836015eedd8e0184f832f486d5662020a565579c62b824f660bdc8cc78e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4678bae0ecbb2bd71b6658325402c959

            SHA1

            6584dc6c11a746c81362c9904188b8b885e9d077

            SHA256

            5cb8ca48d3527367df24e8107cc9cef261935a33ca1710522370c5bd0a9c90c6

            SHA512

            82d405be7c25952ec8b031e1f1d12143b874821723cd4052903e3d7f9efe3e749b557aa1ec47e81aff425cc81d9f44998b7b254ad7ff8c555062fd0cd5697130

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4678bae0ecbb2bd71b6658325402c959

            SHA1

            6584dc6c11a746c81362c9904188b8b885e9d077

            SHA256

            5cb8ca48d3527367df24e8107cc9cef261935a33ca1710522370c5bd0a9c90c6

            SHA512

            82d405be7c25952ec8b031e1f1d12143b874821723cd4052903e3d7f9efe3e749b557aa1ec47e81aff425cc81d9f44998b7b254ad7ff8c555062fd0cd5697130

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4678bae0ecbb2bd71b6658325402c959

            SHA1

            6584dc6c11a746c81362c9904188b8b885e9d077

            SHA256

            5cb8ca48d3527367df24e8107cc9cef261935a33ca1710522370c5bd0a9c90c6

            SHA512

            82d405be7c25952ec8b031e1f1d12143b874821723cd4052903e3d7f9efe3e749b557aa1ec47e81aff425cc81d9f44998b7b254ad7ff8c555062fd0cd5697130

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4a2689d2f66628a32b5b99a19cb6e57b

            SHA1

            4566fc5330cc34b36ce52de4c2e53474a5e3bb57

            SHA256

            3225cd6abae312bc227430d17b6b93a3aac74bd260c7abdf2cb3691f09e2adeb

            SHA512

            25b482dd623e1118e3d6bcc7b4c08f9384c23287c6228ba033ce760a2377d3ec00484a0f6fbaa7d1a5327d38abd6c7ecde684d166dc98b9c7e952cbe99aa7d1a

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4a2689d2f66628a32b5b99a19cb6e57b

            SHA1

            4566fc5330cc34b36ce52de4c2e53474a5e3bb57

            SHA256

            3225cd6abae312bc227430d17b6b93a3aac74bd260c7abdf2cb3691f09e2adeb

            SHA512

            25b482dd623e1118e3d6bcc7b4c08f9384c23287c6228ba033ce760a2377d3ec00484a0f6fbaa7d1a5327d38abd6c7ecde684d166dc98b9c7e952cbe99aa7d1a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d4ce36e781c9d902cb43cc271d430730

            SHA1

            0603449649e55082dedec88fb0e764c9817c38d4

            SHA256

            1e6279d949e2128967b59821b3426eeb8b670825b5714470dbe8c5b4cc8948f6

            SHA512

            73b8da80d8b87ee0f0830b4e015a313e10ffcb174f4dc7759596f6b5c010c17a79ffd47ab0e09d1b4149f7f5d03153b21f004d563c4f0d77045f93d14890695a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d4ce36e781c9d902cb43cc271d430730

            SHA1

            0603449649e55082dedec88fb0e764c9817c38d4

            SHA256

            1e6279d949e2128967b59821b3426eeb8b670825b5714470dbe8c5b4cc8948f6

            SHA512

            73b8da80d8b87ee0f0830b4e015a313e10ffcb174f4dc7759596f6b5c010c17a79ffd47ab0e09d1b4149f7f5d03153b21f004d563c4f0d77045f93d14890695a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d4ce36e781c9d902cb43cc271d430730

            SHA1

            0603449649e55082dedec88fb0e764c9817c38d4

            SHA256

            1e6279d949e2128967b59821b3426eeb8b670825b5714470dbe8c5b4cc8948f6

            SHA512

            73b8da80d8b87ee0f0830b4e015a313e10ffcb174f4dc7759596f6b5c010c17a79ffd47ab0e09d1b4149f7f5d03153b21f004d563c4f0d77045f93d14890695a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            900a6c104b86bc09403dfa4c3cfbbf61

            SHA1

            b650a9e63d434c32e26ce7b905f3d03b7baaa883

            SHA256

            3d8168c8b5f8612e541f5b8a0dbc276d463b4d941f1ae1ca000a07b0772ab395

            SHA512

            7e988857cb943fc533755a867e89e7e3735fc97753e4648bf1866b8fb1945bf040317f378e7ab99500149423d32f0749f0a29408a5ace0b9f03dc74d46dbeea2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            900a6c104b86bc09403dfa4c3cfbbf61

            SHA1

            b650a9e63d434c32e26ce7b905f3d03b7baaa883

            SHA256

            3d8168c8b5f8612e541f5b8a0dbc276d463b4d941f1ae1ca000a07b0772ab395

            SHA512

            7e988857cb943fc533755a867e89e7e3735fc97753e4648bf1866b8fb1945bf040317f378e7ab99500149423d32f0749f0a29408a5ace0b9f03dc74d46dbeea2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            900a6c104b86bc09403dfa4c3cfbbf61

            SHA1

            b650a9e63d434c32e26ce7b905f3d03b7baaa883

            SHA256

            3d8168c8b5f8612e541f5b8a0dbc276d463b4d941f1ae1ca000a07b0772ab395

            SHA512

            7e988857cb943fc533755a867e89e7e3735fc97753e4648bf1866b8fb1945bf040317f378e7ab99500149423d32f0749f0a29408a5ace0b9f03dc74d46dbeea2

          • memory/524-140-0x0000000000000000-mapping.dmp

          • memory/816-159-0x0000000000000000-mapping.dmp

          • memory/2064-158-0x0000000000000000-mapping.dmp

          • memory/2892-141-0x0000000000000000-mapping.dmp

          • memory/3316-166-0x0000000000000000-mapping.dmp

          • memory/3524-153-0x0000000000000000-mapping.dmp

          • memory/3644-165-0x0000000000000000-mapping.dmp

          • memory/3844-142-0x0000000000000000-mapping.dmp

          • memory/4156-137-0x0000000000000000-mapping.dmp

          • memory/4196-136-0x0000000000000000-mapping.dmp

          • memory/4932-147-0x0000000000000000-mapping.dmp

          • memory/4996-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4996-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB