Analysis

  • max time kernel
    47s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:14

General

  • Target

    b4488712e85f446dab54e6bdf1d2b2cf665b6fd0e54a57938a8e583c9b86dc78.exe

  • Size

    603KB

  • MD5

    3f3534f2754069134b373f5af437a816

  • SHA1

    d5c9ef6b22c2c7cd81c600976e369fce9a03c790

  • SHA256

    b4488712e85f446dab54e6bdf1d2b2cf665b6fd0e54a57938a8e583c9b86dc78

  • SHA512

    3d50e9e8cd20a21356c0d42472f77875c9e4b8ad3da19f21a84bc4c09af339f6243bb4cb408af20c6387a14afd3339a8dfb57be7564608e076a7f38110889a7e

  • SSDEEP

    12288:rIny5DYTMI/BZnQtvKqgA/CBZMgUdavG+9H6/+DlqE:TUTMaVQFCI2GVTE

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 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.

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4488712e85f446dab54e6bdf1d2b2cf665b6fd0e54a57938a8e583c9b86dc78.exe
    "C:\Users\Admin\AppData\Local\Temp\b4488712e85f446dab54e6bdf1d2b2cf665b6fd0e54a57938a8e583c9b86dc78.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:1724
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1912
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1704
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1240
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1496
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1140
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1668
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1808
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1916
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1092
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:996
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1472
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1660

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            592fb412be0998170f6e96de55c02309

            SHA1

            9fcbcea72c0dad061862b53df71c5b8da3680a65

            SHA256

            25d253921b5d70b564e9e4b029600d35884ebb4bd3e6584360f5ee08800e37c1

            SHA512

            ecf4f77ee337f48379aa6cc7e59fd645c12a4f2f87fed6d247777bd23e2142654e657230d59a3492f36b996af8d289661e212b77776de08760f06c63d737f165

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            bc59942e5848b09a5bac8077e83d4acf

            SHA1

            47a11709a4dd4329309dd664438bd9f4fda133ec

            SHA256

            67b99323e82fa826978a7a72cb3f0fce3bff57e7142a18495994cdac16637f8e

            SHA512

            232535f60a257ee2d98671cbccffaf28ba5cf280112d3d72b889810c22d14358b18f52c74b8296e7a7cd7fa838bd89f84f1bc7ae97f4869a9c3454b58072bb4e

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            26910f6f8fa1a9b708fce71d4c2bffe2

            SHA1

            c74a68fcaa54dbd32c82949ed32f2e2d951fde0d

            SHA256

            167ebffd0b3f2eadc3de8769b3fe98bce11272aeddf06a2ef10b6866dadd0f8e

            SHA512

            1cf524f6c3777cdf42e891e6884a21dbbadffcebdb4e19166567ac7766cf54a146429c284b89e7cf5a63ab14a21d862cc6b1ebc4577e850766d0af97ec4a0bb3

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            14514108cc4b464eedbd2ee1c775a794

            SHA1

            f179a27e21efc44cc3e73ee9fe57d6963314e318

            SHA256

            43947aaf48e462a2d0bca61776f120dc6f98257661b20476c4cf4ed66a9ac41e

            SHA512

            eb2dabb4c39d4d280a74d83689d9fb8234342112c117dc87d4a3e030d5b1c6d7548ddd6133aee78b1088627fdf4d1bcafecbd603ce552173d2404911668bd491

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            14514108cc4b464eedbd2ee1c775a794

            SHA1

            f179a27e21efc44cc3e73ee9fe57d6963314e318

            SHA256

            43947aaf48e462a2d0bca61776f120dc6f98257661b20476c4cf4ed66a9ac41e

            SHA512

            eb2dabb4c39d4d280a74d83689d9fb8234342112c117dc87d4a3e030d5b1c6d7548ddd6133aee78b1088627fdf4d1bcafecbd603ce552173d2404911668bd491

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            d7ea9afb3eb94a2605865468249676c8

            SHA1

            9ab13b09c44ffee4b1c9381876ecc8def6550765

            SHA256

            08f6bc302007e3c6345d820d2f676da8df9ccce06db66072661f806502999567

            SHA512

            69fbacfc8e7509ba52fcf110c6f17b0e9b91c86d9c47ea4e603d6bccca2d2a60b3a347b0e0be2a26a7713147684acfb8e6598241d4d9b873cd43e6106fae9b84

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            d7ea9afb3eb94a2605865468249676c8

            SHA1

            9ab13b09c44ffee4b1c9381876ecc8def6550765

            SHA256

            08f6bc302007e3c6345d820d2f676da8df9ccce06db66072661f806502999567

            SHA512

            69fbacfc8e7509ba52fcf110c6f17b0e9b91c86d9c47ea4e603d6bccca2d2a60b3a347b0e0be2a26a7713147684acfb8e6598241d4d9b873cd43e6106fae9b84

          • \Users\Admin\AppData\Local\Temp\nsd4F3.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            592fb412be0998170f6e96de55c02309

            SHA1

            9fcbcea72c0dad061862b53df71c5b8da3680a65

            SHA256

            25d253921b5d70b564e9e4b029600d35884ebb4bd3e6584360f5ee08800e37c1

            SHA512

            ecf4f77ee337f48379aa6cc7e59fd645c12a4f2f87fed6d247777bd23e2142654e657230d59a3492f36b996af8d289661e212b77776de08760f06c63d737f165

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            592fb412be0998170f6e96de55c02309

            SHA1

            9fcbcea72c0dad061862b53df71c5b8da3680a65

            SHA256

            25d253921b5d70b564e9e4b029600d35884ebb4bd3e6584360f5ee08800e37c1

            SHA512

            ecf4f77ee337f48379aa6cc7e59fd645c12a4f2f87fed6d247777bd23e2142654e657230d59a3492f36b996af8d289661e212b77776de08760f06c63d737f165

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            592fb412be0998170f6e96de55c02309

            SHA1

            9fcbcea72c0dad061862b53df71c5b8da3680a65

            SHA256

            25d253921b5d70b564e9e4b029600d35884ebb4bd3e6584360f5ee08800e37c1

            SHA512

            ecf4f77ee337f48379aa6cc7e59fd645c12a4f2f87fed6d247777bd23e2142654e657230d59a3492f36b996af8d289661e212b77776de08760f06c63d737f165

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            bc59942e5848b09a5bac8077e83d4acf

            SHA1

            47a11709a4dd4329309dd664438bd9f4fda133ec

            SHA256

            67b99323e82fa826978a7a72cb3f0fce3bff57e7142a18495994cdac16637f8e

            SHA512

            232535f60a257ee2d98671cbccffaf28ba5cf280112d3d72b889810c22d14358b18f52c74b8296e7a7cd7fa838bd89f84f1bc7ae97f4869a9c3454b58072bb4e

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            bc59942e5848b09a5bac8077e83d4acf

            SHA1

            47a11709a4dd4329309dd664438bd9f4fda133ec

            SHA256

            67b99323e82fa826978a7a72cb3f0fce3bff57e7142a18495994cdac16637f8e

            SHA512

            232535f60a257ee2d98671cbccffaf28ba5cf280112d3d72b889810c22d14358b18f52c74b8296e7a7cd7fa838bd89f84f1bc7ae97f4869a9c3454b58072bb4e

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            26910f6f8fa1a9b708fce71d4c2bffe2

            SHA1

            c74a68fcaa54dbd32c82949ed32f2e2d951fde0d

            SHA256

            167ebffd0b3f2eadc3de8769b3fe98bce11272aeddf06a2ef10b6866dadd0f8e

            SHA512

            1cf524f6c3777cdf42e891e6884a21dbbadffcebdb4e19166567ac7766cf54a146429c284b89e7cf5a63ab14a21d862cc6b1ebc4577e850766d0af97ec4a0bb3

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            14514108cc4b464eedbd2ee1c775a794

            SHA1

            f179a27e21efc44cc3e73ee9fe57d6963314e318

            SHA256

            43947aaf48e462a2d0bca61776f120dc6f98257661b20476c4cf4ed66a9ac41e

            SHA512

            eb2dabb4c39d4d280a74d83689d9fb8234342112c117dc87d4a3e030d5b1c6d7548ddd6133aee78b1088627fdf4d1bcafecbd603ce552173d2404911668bd491

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            d7ea9afb3eb94a2605865468249676c8

            SHA1

            9ab13b09c44ffee4b1c9381876ecc8def6550765

            SHA256

            08f6bc302007e3c6345d820d2f676da8df9ccce06db66072661f806502999567

            SHA512

            69fbacfc8e7509ba52fcf110c6f17b0e9b91c86d9c47ea4e603d6bccca2d2a60b3a347b0e0be2a26a7713147684acfb8e6598241d4d9b873cd43e6106fae9b84

          • memory/996-87-0x0000000000000000-mapping.dmp
          • memory/1092-86-0x0000000000000000-mapping.dmp
          • memory/1140-70-0x0000000000000000-mapping.dmp
          • memory/1240-62-0x0000000000000000-mapping.dmp
          • memory/1496-64-0x0000000000000000-mapping.dmp
          • memory/1668-76-0x0000000000000000-mapping.dmp
          • memory/1704-61-0x0000000000000000-mapping.dmp
          • memory/1724-54-0x0000000074DC1000-0x0000000074DC3000-memory.dmp
            Filesize

            8KB

          • memory/1724-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1724-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1808-80-0x0000000000000000-mapping.dmp
          • memory/1912-58-0x0000000000000000-mapping.dmp
          • memory/1916-81-0x0000000000000000-mapping.dmp
          • memory/2020-57-0x0000000000000000-mapping.dmp