Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f76ac4f4aaf551518d8f4bb5e5ac7331e293d5fc9e7f087e3fc52f84cd24da58.exe

  • Size

    602KB

  • MD5

    30d8c7bf91fd0613ac7f981456a025de

  • SHA1

    67a1e03ba7e09e8e4ade62ea9b65c3ec1da5a948

  • SHA256

    f76ac4f4aaf551518d8f4bb5e5ac7331e293d5fc9e7f087e3fc52f84cd24da58

  • SHA512

    b84d575352c6401b88dc2fb3103cbd0f2af0640a820d19f2175c1dea7031f0e319d3749f6998e18c2001b2bd40a4240c906d1080d6c22cbc1533c3bd08898ed6

  • SSDEEP

    12288:uIny5DYTg2+VfBRpId1Koi9NmQBBYlGyRZ3EwtDXV05ZEkgP8:wUTgHpId1K3jFmR5EwtDXVyZEfP

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\f76ac4f4aaf551518d8f4bb5e5ac7331e293d5fc9e7f087e3fc52f84cd24da58.exe
    "C:\Users\Admin\AppData\Local\Temp\f76ac4f4aaf551518d8f4bb5e5ac7331e293d5fc9e7f087e3fc52f84cd24da58.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:1292
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2032
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1152
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:884
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1732
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:524
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1456
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1012
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2000
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1952
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:828
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:624
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1988
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1388

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b59561e79ce20a98e5f20d8ead65bbb1

            SHA1

            252dd91b44be97675058316ae935d2375655d4a7

            SHA256

            132a6a4e38b64c92addac3c55bda4473263fb462250e3283e8c29964b6a528ac

            SHA512

            015d66011b893ca6bf395cb580904ab63b82a520c387ba693a43916adc0fbf5c02090e7992a945ac5d51e994c6923c70b7ac1ca116c70b2a042742297bb3012a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9e9184b5ae687636fb9e5471280c9774

            SHA1

            28a242b868fff0169899843e0c4d190d751b8235

            SHA256

            08380ecb9e28c36f7b92b2bb383a9f73520fb6b9de81935c5ceea9ef811fa8bc

            SHA512

            f988ea0f946ee8f3a9c2974a06efaa1230b1134bf301dadff6c3f7efdcd3f764c4fd439095dbc34ac14b64ecf942a336217e47915ce2d2550af854d7df28b9be

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8ab112bfe2d41bad65fdb934da8f986b

            SHA1

            15d8f7a95d0a9366187f4a9976b14a303cedf42c

            SHA256

            4c017ae652467475b540336bc1781fc08ad6a5df6ab34beec8f6581c5b5afaae

            SHA512

            568647190a445b9353be64f522491bdac10b15377e8bd8e50cb6784d943dbb181b3a949686851d7fc17bf75722bf145ace52325f8ce71ac3fe11495a963972e4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c1be3910095d743b1682bbc2c9fbadde

            SHA1

            52d22128cefc6cdc2bb43869020ac7e77078a00f

            SHA256

            71409fd169c363e1f45a8630d25f9cf3876e7af9a03babd4815dccc049227040

            SHA512

            c0f222f9bbe0884112124f4412178b58fd639014abdb1798198fd0cc78edb7bfc0835abbea7efddb2258123d7724a8492a3930bdc4a7c5f667f5ea27b8aa3af9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c1be3910095d743b1682bbc2c9fbadde

            SHA1

            52d22128cefc6cdc2bb43869020ac7e77078a00f

            SHA256

            71409fd169c363e1f45a8630d25f9cf3876e7af9a03babd4815dccc049227040

            SHA512

            c0f222f9bbe0884112124f4412178b58fd639014abdb1798198fd0cc78edb7bfc0835abbea7efddb2258123d7724a8492a3930bdc4a7c5f667f5ea27b8aa3af9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a8be4ddd40071925eeea8a0512386d52

            SHA1

            c75982071ec2936a397a0e9d90c90eb51672e208

            SHA256

            bfdc53985a9a5eaa9ee333206e4cfb8634fb7aff2d07e2a8379c8fb5903a2997

            SHA512

            120bf49bebfcc02ddbdb4dd64db6edb476c455dbcc04cf5399fb50c67e6a8a3b68e617a0d59e17e8ca5e00a29761a8616c168b806a6555e73d17b67002074b18

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a8be4ddd40071925eeea8a0512386d52

            SHA1

            c75982071ec2936a397a0e9d90c90eb51672e208

            SHA256

            bfdc53985a9a5eaa9ee333206e4cfb8634fb7aff2d07e2a8379c8fb5903a2997

            SHA512

            120bf49bebfcc02ddbdb4dd64db6edb476c455dbcc04cf5399fb50c67e6a8a3b68e617a0d59e17e8ca5e00a29761a8616c168b806a6555e73d17b67002074b18

          • \Users\Admin\AppData\Local\Temp\nsy2520.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2520.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2520.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2520.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2520.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b59561e79ce20a98e5f20d8ead65bbb1

            SHA1

            252dd91b44be97675058316ae935d2375655d4a7

            SHA256

            132a6a4e38b64c92addac3c55bda4473263fb462250e3283e8c29964b6a528ac

            SHA512

            015d66011b893ca6bf395cb580904ab63b82a520c387ba693a43916adc0fbf5c02090e7992a945ac5d51e994c6923c70b7ac1ca116c70b2a042742297bb3012a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b59561e79ce20a98e5f20d8ead65bbb1

            SHA1

            252dd91b44be97675058316ae935d2375655d4a7

            SHA256

            132a6a4e38b64c92addac3c55bda4473263fb462250e3283e8c29964b6a528ac

            SHA512

            015d66011b893ca6bf395cb580904ab63b82a520c387ba693a43916adc0fbf5c02090e7992a945ac5d51e994c6923c70b7ac1ca116c70b2a042742297bb3012a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b59561e79ce20a98e5f20d8ead65bbb1

            SHA1

            252dd91b44be97675058316ae935d2375655d4a7

            SHA256

            132a6a4e38b64c92addac3c55bda4473263fb462250e3283e8c29964b6a528ac

            SHA512

            015d66011b893ca6bf395cb580904ab63b82a520c387ba693a43916adc0fbf5c02090e7992a945ac5d51e994c6923c70b7ac1ca116c70b2a042742297bb3012a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9e9184b5ae687636fb9e5471280c9774

            SHA1

            28a242b868fff0169899843e0c4d190d751b8235

            SHA256

            08380ecb9e28c36f7b92b2bb383a9f73520fb6b9de81935c5ceea9ef811fa8bc

            SHA512

            f988ea0f946ee8f3a9c2974a06efaa1230b1134bf301dadff6c3f7efdcd3f764c4fd439095dbc34ac14b64ecf942a336217e47915ce2d2550af854d7df28b9be

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9e9184b5ae687636fb9e5471280c9774

            SHA1

            28a242b868fff0169899843e0c4d190d751b8235

            SHA256

            08380ecb9e28c36f7b92b2bb383a9f73520fb6b9de81935c5ceea9ef811fa8bc

            SHA512

            f988ea0f946ee8f3a9c2974a06efaa1230b1134bf301dadff6c3f7efdcd3f764c4fd439095dbc34ac14b64ecf942a336217e47915ce2d2550af854d7df28b9be

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8ab112bfe2d41bad65fdb934da8f986b

            SHA1

            15d8f7a95d0a9366187f4a9976b14a303cedf42c

            SHA256

            4c017ae652467475b540336bc1781fc08ad6a5df6ab34beec8f6581c5b5afaae

            SHA512

            568647190a445b9353be64f522491bdac10b15377e8bd8e50cb6784d943dbb181b3a949686851d7fc17bf75722bf145ace52325f8ce71ac3fe11495a963972e4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c1be3910095d743b1682bbc2c9fbadde

            SHA1

            52d22128cefc6cdc2bb43869020ac7e77078a00f

            SHA256

            71409fd169c363e1f45a8630d25f9cf3876e7af9a03babd4815dccc049227040

            SHA512

            c0f222f9bbe0884112124f4412178b58fd639014abdb1798198fd0cc78edb7bfc0835abbea7efddb2258123d7724a8492a3930bdc4a7c5f667f5ea27b8aa3af9

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a8be4ddd40071925eeea8a0512386d52

            SHA1

            c75982071ec2936a397a0e9d90c90eb51672e208

            SHA256

            bfdc53985a9a5eaa9ee333206e4cfb8634fb7aff2d07e2a8379c8fb5903a2997

            SHA512

            120bf49bebfcc02ddbdb4dd64db6edb476c455dbcc04cf5399fb50c67e6a8a3b68e617a0d59e17e8ca5e00a29761a8616c168b806a6555e73d17b67002074b18

          • memory/524-64-0x0000000000000000-mapping.dmp

          • memory/624-87-0x0000000000000000-mapping.dmp

          • memory/828-86-0x0000000000000000-mapping.dmp

          • memory/884-61-0x0000000000000000-mapping.dmp

          • memory/1012-76-0x0000000000000000-mapping.dmp

          • memory/1152-59-0x0000000000000000-mapping.dmp

          • memory/1292-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

            Filesize

            8KB

          • memory/1292-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1292-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1456-70-0x0000000000000000-mapping.dmp

          • memory/1732-62-0x0000000000000000-mapping.dmp

          • memory/1952-81-0x0000000000000000-mapping.dmp

          • memory/2000-80-0x0000000000000000-mapping.dmp

          • memory/2032-57-0x0000000000000000-mapping.dmp