Analysis

  • max time kernel
    152s
  • max time network
    192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    85466ac4c71eec942042a49bf4392d4e0387b477c90b859734af51b7caaf50d9.exe

  • Size

    601KB

  • MD5

    b3d7aa3d4c143bf3e5db817a96409e29

  • SHA1

    37063cbfd3c3f110b6e886889f53e8ddc52fb368

  • SHA256

    85466ac4c71eec942042a49bf4392d4e0387b477c90b859734af51b7caaf50d9

  • SHA512

    641b9f5cbc495fac19ec8ece8da416545834907959e54c528d4c86ad8eb69f57774871582d5db33f63086ba213b82cef73e7d797c39a711c78a7a68ea5a276a9

  • SSDEEP

    12288:LIny5DYTD83xjlmBZXE0gsh+cN+GhUVJv0x:zUTD83RlgpEa4oOVJv0

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\85466ac4c71eec942042a49bf4392d4e0387b477c90b859734af51b7caaf50d9.exe
    "C:\Users\Admin\AppData\Local\Temp\85466ac4c71eec942042a49bf4392d4e0387b477c90b859734af51b7caaf50d9.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:2788
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3832
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4204
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3056
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1424
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4316
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4172
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:692
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4284
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3140
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2976
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1120
          • 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:2776
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1356

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9397.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7358ed0fa0f76400da2869e8b706625a

            SHA1

            56cda64a64425003871530300466d7f32957a457

            SHA256

            7c8a64bea6a2240ce67e663525b877b997d06a0e4ef5b19598b41642288d5b5e

            SHA512

            6faac901e40861f5e4e0def1ef899382a7c207ba9fb16981ae80b6b7877636ed7a7cee80a588a81ce27ae1e5c08cdb96705092104d96ee5ab91801a979a53175

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7358ed0fa0f76400da2869e8b706625a

            SHA1

            56cda64a64425003871530300466d7f32957a457

            SHA256

            7c8a64bea6a2240ce67e663525b877b997d06a0e4ef5b19598b41642288d5b5e

            SHA512

            6faac901e40861f5e4e0def1ef899382a7c207ba9fb16981ae80b6b7877636ed7a7cee80a588a81ce27ae1e5c08cdb96705092104d96ee5ab91801a979a53175

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7358ed0fa0f76400da2869e8b706625a

            SHA1

            56cda64a64425003871530300466d7f32957a457

            SHA256

            7c8a64bea6a2240ce67e663525b877b997d06a0e4ef5b19598b41642288d5b5e

            SHA512

            6faac901e40861f5e4e0def1ef899382a7c207ba9fb16981ae80b6b7877636ed7a7cee80a588a81ce27ae1e5c08cdb96705092104d96ee5ab91801a979a53175

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7358ed0fa0f76400da2869e8b706625a

            SHA1

            56cda64a64425003871530300466d7f32957a457

            SHA256

            7c8a64bea6a2240ce67e663525b877b997d06a0e4ef5b19598b41642288d5b5e

            SHA512

            6faac901e40861f5e4e0def1ef899382a7c207ba9fb16981ae80b6b7877636ed7a7cee80a588a81ce27ae1e5c08cdb96705092104d96ee5ab91801a979a53175

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2d7cfb2b873979a68d9a21223cc4271a

            SHA1

            f87bba79ac02e4efd1c6cbb242863d8f1581e9b6

            SHA256

            dd5560f78f1de2a207dc6e36f161fc5800919ad51a3d28c9f1094743bf981bdc

            SHA512

            e0d79ab959a77b0255d878421d81a78d393b9a3f043ad0cafb6fb4ec21cd10b41537590f4a94ff75c36b60d8e74ee2b3aa3f4522bedb948b32e3d961bfaecf4c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2d7cfb2b873979a68d9a21223cc4271a

            SHA1

            f87bba79ac02e4efd1c6cbb242863d8f1581e9b6

            SHA256

            dd5560f78f1de2a207dc6e36f161fc5800919ad51a3d28c9f1094743bf981bdc

            SHA512

            e0d79ab959a77b0255d878421d81a78d393b9a3f043ad0cafb6fb4ec21cd10b41537590f4a94ff75c36b60d8e74ee2b3aa3f4522bedb948b32e3d961bfaecf4c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2d7cfb2b873979a68d9a21223cc4271a

            SHA1

            f87bba79ac02e4efd1c6cbb242863d8f1581e9b6

            SHA256

            dd5560f78f1de2a207dc6e36f161fc5800919ad51a3d28c9f1094743bf981bdc

            SHA512

            e0d79ab959a77b0255d878421d81a78d393b9a3f043ad0cafb6fb4ec21cd10b41537590f4a94ff75c36b60d8e74ee2b3aa3f4522bedb948b32e3d961bfaecf4c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c28888f7b5fe89b88e4172426f20f2a8

            SHA1

            6af07538ea599a1224d234d2691c398d39ad24bf

            SHA256

            380003777b8c810a033ec98efab9959c01fe8fed45e746c2c2087f7caa974411

            SHA512

            44dcde16089cac636a1bb3ec4c4482a20c0b9f197b7646d4899bc8cbb1d65c38a930f612b03adf991d16b42f9c3082b7a1d7cb04dfcc6a1c38a40ffbbea9df68

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c28888f7b5fe89b88e4172426f20f2a8

            SHA1

            6af07538ea599a1224d234d2691c398d39ad24bf

            SHA256

            380003777b8c810a033ec98efab9959c01fe8fed45e746c2c2087f7caa974411

            SHA512

            44dcde16089cac636a1bb3ec4c4482a20c0b9f197b7646d4899bc8cbb1d65c38a930f612b03adf991d16b42f9c3082b7a1d7cb04dfcc6a1c38a40ffbbea9df68

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            066f8a413b6ab90620ee33d30a8401a0

            SHA1

            072baae6797c51a8d57150ae9fbca68c776ffa7f

            SHA256

            324417edad9914b3fad701671f1b78ee47722afbdf99b2d29a5ecae8bbc94b54

            SHA512

            4c17e732d7e7e58c9f6bfac717a459c75667ff4efcbbc468e18a1aaaa332c9c57c0043cc5cb31a91dc228006aa86bbb102ec8eb8f5afa83c2e1be4c692e5e51d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            066f8a413b6ab90620ee33d30a8401a0

            SHA1

            072baae6797c51a8d57150ae9fbca68c776ffa7f

            SHA256

            324417edad9914b3fad701671f1b78ee47722afbdf99b2d29a5ecae8bbc94b54

            SHA512

            4c17e732d7e7e58c9f6bfac717a459c75667ff4efcbbc468e18a1aaaa332c9c57c0043cc5cb31a91dc228006aa86bbb102ec8eb8f5afa83c2e1be4c692e5e51d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            066f8a413b6ab90620ee33d30a8401a0

            SHA1

            072baae6797c51a8d57150ae9fbca68c776ffa7f

            SHA256

            324417edad9914b3fad701671f1b78ee47722afbdf99b2d29a5ecae8bbc94b54

            SHA512

            4c17e732d7e7e58c9f6bfac717a459c75667ff4efcbbc468e18a1aaaa332c9c57c0043cc5cb31a91dc228006aa86bbb102ec8eb8f5afa83c2e1be4c692e5e51d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1f2aae27da924081ed4d171c39f659ec

            SHA1

            13e4535f6221d3690d2192f2aa8fa31fe0cd4bc0

            SHA256

            73b302803f9c55e731e3f97c743a9cc23a6649692e1e5b656794ef483130c4bd

            SHA512

            2e14bddeba3782dae8bdc24b22bf0ca23746f9e28b5ef327427708367e3b6a2af18af49e469fe660c0c5f2bc7e0c44b01958470e54c204358acee28826aff992

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1f2aae27da924081ed4d171c39f659ec

            SHA1

            13e4535f6221d3690d2192f2aa8fa31fe0cd4bc0

            SHA256

            73b302803f9c55e731e3f97c743a9cc23a6649692e1e5b656794ef483130c4bd

            SHA512

            2e14bddeba3782dae8bdc24b22bf0ca23746f9e28b5ef327427708367e3b6a2af18af49e469fe660c0c5f2bc7e0c44b01958470e54c204358acee28826aff992

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1f2aae27da924081ed4d171c39f659ec

            SHA1

            13e4535f6221d3690d2192f2aa8fa31fe0cd4bc0

            SHA256

            73b302803f9c55e731e3f97c743a9cc23a6649692e1e5b656794ef483130c4bd

            SHA512

            2e14bddeba3782dae8bdc24b22bf0ca23746f9e28b5ef327427708367e3b6a2af18af49e469fe660c0c5f2bc7e0c44b01958470e54c204358acee28826aff992

          • memory/692-153-0x0000000000000000-mapping.dmp

          • memory/1120-166-0x0000000000000000-mapping.dmp

          • memory/1424-141-0x0000000000000000-mapping.dmp

          • memory/2788-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2788-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2976-165-0x0000000000000000-mapping.dmp

          • memory/3056-140-0x0000000000000000-mapping.dmp

          • memory/3140-159-0x0000000000000000-mapping.dmp

          • memory/3832-136-0x0000000000000000-mapping.dmp

          • memory/4172-147-0x0000000000000000-mapping.dmp

          • memory/4204-137-0x0000000000000000-mapping.dmp

          • memory/4284-158-0x0000000000000000-mapping.dmp

          • memory/4316-142-0x0000000000000000-mapping.dmp