Analysis

  • max time kernel
    91s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    ac67701f4c571772222a05225b7dce5ce3363858ba7e0f1035973da0b7920ffe.exe

  • Size

    446KB

  • MD5

    12929366b0c1957610c453f2a9b3790c

  • SHA1

    fa8fc7c970c1f13d44f37bdd9fb89ef6608f6fb9

  • SHA256

    ac67701f4c571772222a05225b7dce5ce3363858ba7e0f1035973da0b7920ffe

  • SHA512

    3b5ad0c539821890616908c1ff7b7bd18115f29c0b0b37e2967a750f76ec238fd38b6829ceba886b9a4e4f6f5de67d71ef6ca31ee655f8c4c5b484cb74db3b8e

  • SSDEEP

    12288:tFGR8GfuW0MN7qMSgviUQOlrVH4idYof5HGznBRKOP:tFGMW0mSgqKlxPYoflip

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\ac67701f4c571772222a05225b7dce5ce3363858ba7e0f1035973da0b7920ffe.exe
    "C:\Users\Admin\AppData\Local\Temp\ac67701f4c571772222a05225b7dce5ce3363858ba7e0f1035973da0b7920ffe.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:4880
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2704
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:976
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1336
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2444
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1564
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2420
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:240
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3084
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4436
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2308
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4448
          • 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:4752
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2816

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nslBE65.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e842374a7fa33a7eb2a49746f1b6fa3e

            SHA1

            c3e32077a0f70cff5622d109f587c0206518a8e7

            SHA256

            72295c43dd03621aeb398001487852c69aa94b70efc1629313b35b027d25375c

            SHA512

            07c052e4a8a5589b43cd66b4b8c7556dbf98c685fbe7cb701a482145ed5e1bafebbc9c7bb46f50679dac5aa93e6ed39b3b6e8e26a533912e99c037ae0029a848

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e842374a7fa33a7eb2a49746f1b6fa3e

            SHA1

            c3e32077a0f70cff5622d109f587c0206518a8e7

            SHA256

            72295c43dd03621aeb398001487852c69aa94b70efc1629313b35b027d25375c

            SHA512

            07c052e4a8a5589b43cd66b4b8c7556dbf98c685fbe7cb701a482145ed5e1bafebbc9c7bb46f50679dac5aa93e6ed39b3b6e8e26a533912e99c037ae0029a848

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e842374a7fa33a7eb2a49746f1b6fa3e

            SHA1

            c3e32077a0f70cff5622d109f587c0206518a8e7

            SHA256

            72295c43dd03621aeb398001487852c69aa94b70efc1629313b35b027d25375c

            SHA512

            07c052e4a8a5589b43cd66b4b8c7556dbf98c685fbe7cb701a482145ed5e1bafebbc9c7bb46f50679dac5aa93e6ed39b3b6e8e26a533912e99c037ae0029a848

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e842374a7fa33a7eb2a49746f1b6fa3e

            SHA1

            c3e32077a0f70cff5622d109f587c0206518a8e7

            SHA256

            72295c43dd03621aeb398001487852c69aa94b70efc1629313b35b027d25375c

            SHA512

            07c052e4a8a5589b43cd66b4b8c7556dbf98c685fbe7cb701a482145ed5e1bafebbc9c7bb46f50679dac5aa93e6ed39b3b6e8e26a533912e99c037ae0029a848

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ecb3454f329370c04979f2551c426585

            SHA1

            7cb626d207d11dd64759e32584673b87d4fe084c

            SHA256

            badfc9d2fe1251d99e619daa92123f01786b3dc66a5bfb9e046b471eea39df8d

            SHA512

            baa7355c10b15f9f2b97e38908f68b46df6c6f6154b48eda6acfc49c9dddfbead404dc4186031d53ddd18c7cc1f2586adfe30635b49aa82af1e3adc93367326f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ecb3454f329370c04979f2551c426585

            SHA1

            7cb626d207d11dd64759e32584673b87d4fe084c

            SHA256

            badfc9d2fe1251d99e619daa92123f01786b3dc66a5bfb9e046b471eea39df8d

            SHA512

            baa7355c10b15f9f2b97e38908f68b46df6c6f6154b48eda6acfc49c9dddfbead404dc4186031d53ddd18c7cc1f2586adfe30635b49aa82af1e3adc93367326f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ecb3454f329370c04979f2551c426585

            SHA1

            7cb626d207d11dd64759e32584673b87d4fe084c

            SHA256

            badfc9d2fe1251d99e619daa92123f01786b3dc66a5bfb9e046b471eea39df8d

            SHA512

            baa7355c10b15f9f2b97e38908f68b46df6c6f6154b48eda6acfc49c9dddfbead404dc4186031d53ddd18c7cc1f2586adfe30635b49aa82af1e3adc93367326f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f099426ad40fd564d54880284ac53800

            SHA1

            3c50b0d80f19d2854b145daff8ca1ba56ed1bade

            SHA256

            2174bfc21a720957f615978a8fc472f5b939049faccaf19ab1d00d4246d98c5f

            SHA512

            65e797725061ca986eb4699ab848f26711a4f89a6934533b131432f27d3c542fcd002d39e8bf29855c6b0a8e3b5288081ff149e994ba8247ca9e357404e96468

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f099426ad40fd564d54880284ac53800

            SHA1

            3c50b0d80f19d2854b145daff8ca1ba56ed1bade

            SHA256

            2174bfc21a720957f615978a8fc472f5b939049faccaf19ab1d00d4246d98c5f

            SHA512

            65e797725061ca986eb4699ab848f26711a4f89a6934533b131432f27d3c542fcd002d39e8bf29855c6b0a8e3b5288081ff149e994ba8247ca9e357404e96468

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fc774dd55dd9b40faa081a460e87c2e4

            SHA1

            4e36c3406e43d48414461fb47a55f476a346abe5

            SHA256

            1eaa2787278569bce7113aba70e179d459b3702c1d975e48e79d413cd2d4e7b5

            SHA512

            8fe08aed40734f20a28f4e4bafc83d2f874947257e4cb0751d9166e4de7e7340d4c6437677db30b481a0c8adf48fc05f39dbccfef1e4b6a3351c39d065ac056c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fc774dd55dd9b40faa081a460e87c2e4

            SHA1

            4e36c3406e43d48414461fb47a55f476a346abe5

            SHA256

            1eaa2787278569bce7113aba70e179d459b3702c1d975e48e79d413cd2d4e7b5

            SHA512

            8fe08aed40734f20a28f4e4bafc83d2f874947257e4cb0751d9166e4de7e7340d4c6437677db30b481a0c8adf48fc05f39dbccfef1e4b6a3351c39d065ac056c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fc774dd55dd9b40faa081a460e87c2e4

            SHA1

            4e36c3406e43d48414461fb47a55f476a346abe5

            SHA256

            1eaa2787278569bce7113aba70e179d459b3702c1d975e48e79d413cd2d4e7b5

            SHA512

            8fe08aed40734f20a28f4e4bafc83d2f874947257e4cb0751d9166e4de7e7340d4c6437677db30b481a0c8adf48fc05f39dbccfef1e4b6a3351c39d065ac056c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1b6f671256145ca79c2e5a1f2d7c57b9

            SHA1

            cd1af4696171f642fde7f2e47ab86efca5c71600

            SHA256

            c98e8bddff99eb884eb11043e3ff26c453c9ad9ad29f15f506dbf4e9141feec0

            SHA512

            afd558e8b76a88326bc82588573e7260137b6644cd87a065eb93135470f26bbee31ca7b878379cf8480c205a90b5a3cbb91f4b5c41c3b59e7769f6f52b1cc658

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1b6f671256145ca79c2e5a1f2d7c57b9

            SHA1

            cd1af4696171f642fde7f2e47ab86efca5c71600

            SHA256

            c98e8bddff99eb884eb11043e3ff26c453c9ad9ad29f15f506dbf4e9141feec0

            SHA512

            afd558e8b76a88326bc82588573e7260137b6644cd87a065eb93135470f26bbee31ca7b878379cf8480c205a90b5a3cbb91f4b5c41c3b59e7769f6f52b1cc658

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1b6f671256145ca79c2e5a1f2d7c57b9

            SHA1

            cd1af4696171f642fde7f2e47ab86efca5c71600

            SHA256

            c98e8bddff99eb884eb11043e3ff26c453c9ad9ad29f15f506dbf4e9141feec0

            SHA512

            afd558e8b76a88326bc82588573e7260137b6644cd87a065eb93135470f26bbee31ca7b878379cf8480c205a90b5a3cbb91f4b5c41c3b59e7769f6f52b1cc658

          • memory/240-152-0x0000000000000000-mapping.dmp

          • memory/976-136-0x0000000000000000-mapping.dmp

          • memory/1336-139-0x0000000000000000-mapping.dmp

          • memory/1564-141-0x0000000000000000-mapping.dmp

          • memory/2308-164-0x0000000000000000-mapping.dmp

          • memory/2420-146-0x0000000000000000-mapping.dmp

          • memory/2444-140-0x0000000000000000-mapping.dmp

          • memory/2704-135-0x0000000000000000-mapping.dmp

          • memory/3084-157-0x0000000000000000-mapping.dmp

          • memory/4436-158-0x0000000000000000-mapping.dmp

          • memory/4448-165-0x0000000000000000-mapping.dmp