Analysis

  • max time kernel
    43s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:34

General

  • Target

    0821ddf8f66042b9eb53a97a9bbe05c583ee84f753fa15113b14015357d7da95.exe

  • Size

    603KB

  • MD5

    e378c7fabed8e3402c703a7ae11c8002

  • SHA1

    132938183af1f5ef810b08a036e5d325c0b8af7d

  • SHA256

    0821ddf8f66042b9eb53a97a9bbe05c583ee84f753fa15113b14015357d7da95

  • SHA512

    7fd928e228e28a2d08373dff9e72db230c5cf6ec51b125fcdf24da8494e1b7533ebb808728573d1d8dee01089946b765ab0cfff8494b2bb93974356f048e9e48

  • SSDEEP

    12288:AIny5DYTfIhwE16gPgwPZ2nK3PYnDFgwyhrXgzT:+UTf6n8glZUK/YD5yV0T

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\0821ddf8f66042b9eb53a97a9bbe05c583ee84f753fa15113b14015357d7da95.exe
    "C:\Users\Admin\AppData\Local\Temp\0821ddf8f66042b9eb53a97a9bbe05c583ee84f753fa15113b14015357d7da95.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:1228
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1332
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:332
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1776
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2036
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:572
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1816
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1988
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1888
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1160
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:688
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1952
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:436

          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

            f24b8a4a7528def8ea6fa9acdbef086b

            SHA1

            921e8875a389f80053d3018dca8317499f941202

            SHA256

            aa80ebf9e06994cfe44cf182d307d20cd9c0fa861772ef96d82cee1c318c60e7

            SHA512

            05bbfb8e1864eee0a2be4fb860224d9018d7fe7c487b0c54377b3c320eff5f8fd78018612e84cfb1d78bf670cda5735d3d68325bd9264ddf7178ad38b08e7627

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

            244KB

            MD5

            725980024b6c88c36527d412d93d7005

            SHA1

            083b50d40a23a21ca408cfb3bb634807b7c24a68

            SHA256

            82740fbf47574f7b4fa22214d79e268083e7ff9268fd7198ca595fbcac8ab464

            SHA512

            fb1974c07a9067dedd8caeb4ad0c78d0799e752eb0317abc2394693e454d29f03738a08bda428632ee812ab69bbe8ee63653819614df0185be25f380c198febb

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

            108KB

            MD5

            c2e14fcdde0c8b83392f9ca4be76f8b2

            SHA1

            02cc471f91a396cb9358e07832d61143cc6fc3fe

            SHA256

            f1a813c3a05a7d195302c876729188046a0daee20d78386edcc4a1b1fdc34435

            SHA512

            84d7de010b2547834559ee56452fa839dfd5d6a8705db9961c57760bc20bfc8b60231659cf36961c6875adecbc090a31c77b8e33c051adb624dcbbc22d21eea6

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

            176KB

            MD5

            d72868c942b541c3ef7b2419260ccf09

            SHA1

            a62795490b0802fe5166cec20cc915c2629edba4

            SHA256

            68cb72d3625ac4339013eb6cc79264d7914db90d87c2c701392ba6d1d23621b7

            SHA512

            60a724878d5d07abda8596dd02add204f7789be3fed62a02b1c8856358482988124b6d467494fcf82eae96c12ac8ca6dc923d930899e853cd156cfcb9f7ac12f

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

            176KB

            MD5

            d72868c942b541c3ef7b2419260ccf09

            SHA1

            a62795490b0802fe5166cec20cc915c2629edba4

            SHA256

            68cb72d3625ac4339013eb6cc79264d7914db90d87c2c701392ba6d1d23621b7

            SHA512

            60a724878d5d07abda8596dd02add204f7789be3fed62a02b1c8856358482988124b6d467494fcf82eae96c12ac8ca6dc923d930899e853cd156cfcb9f7ac12f

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

            158KB

            MD5

            a7faa299bc6270cef12c6e7ba8a6364f

            SHA1

            460822ace5152ccd19543006eb2868aa6b5491c3

            SHA256

            10919223300f48b55585e99a341d5d2dde8b64454aaa21c58ba7b491127d19a9

            SHA512

            8510bf3ea822f2a6bf322f40df0dc3443b039040c203123372cfdc08a5972f9d570f75211b16b04c437823e3a81e0d1a4009d16481ce1d4e49a8f3b70c3eded0

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

            158KB

            MD5

            a7faa299bc6270cef12c6e7ba8a6364f

            SHA1

            460822ace5152ccd19543006eb2868aa6b5491c3

            SHA256

            10919223300f48b55585e99a341d5d2dde8b64454aaa21c58ba7b491127d19a9

            SHA512

            8510bf3ea822f2a6bf322f40df0dc3443b039040c203123372cfdc08a5972f9d570f75211b16b04c437823e3a81e0d1a4009d16481ce1d4e49a8f3b70c3eded0

          • \Users\Admin\AppData\Local\Temp\nsy2964.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2964.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2964.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2964.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2964.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f24b8a4a7528def8ea6fa9acdbef086b

            SHA1

            921e8875a389f80053d3018dca8317499f941202

            SHA256

            aa80ebf9e06994cfe44cf182d307d20cd9c0fa861772ef96d82cee1c318c60e7

            SHA512

            05bbfb8e1864eee0a2be4fb860224d9018d7fe7c487b0c54377b3c320eff5f8fd78018612e84cfb1d78bf670cda5735d3d68325bd9264ddf7178ad38b08e7627

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f24b8a4a7528def8ea6fa9acdbef086b

            SHA1

            921e8875a389f80053d3018dca8317499f941202

            SHA256

            aa80ebf9e06994cfe44cf182d307d20cd9c0fa861772ef96d82cee1c318c60e7

            SHA512

            05bbfb8e1864eee0a2be4fb860224d9018d7fe7c487b0c54377b3c320eff5f8fd78018612e84cfb1d78bf670cda5735d3d68325bd9264ddf7178ad38b08e7627

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f24b8a4a7528def8ea6fa9acdbef086b

            SHA1

            921e8875a389f80053d3018dca8317499f941202

            SHA256

            aa80ebf9e06994cfe44cf182d307d20cd9c0fa861772ef96d82cee1c318c60e7

            SHA512

            05bbfb8e1864eee0a2be4fb860224d9018d7fe7c487b0c54377b3c320eff5f8fd78018612e84cfb1d78bf670cda5735d3d68325bd9264ddf7178ad38b08e7627

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            725980024b6c88c36527d412d93d7005

            SHA1

            083b50d40a23a21ca408cfb3bb634807b7c24a68

            SHA256

            82740fbf47574f7b4fa22214d79e268083e7ff9268fd7198ca595fbcac8ab464

            SHA512

            fb1974c07a9067dedd8caeb4ad0c78d0799e752eb0317abc2394693e454d29f03738a08bda428632ee812ab69bbe8ee63653819614df0185be25f380c198febb

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            725980024b6c88c36527d412d93d7005

            SHA1

            083b50d40a23a21ca408cfb3bb634807b7c24a68

            SHA256

            82740fbf47574f7b4fa22214d79e268083e7ff9268fd7198ca595fbcac8ab464

            SHA512

            fb1974c07a9067dedd8caeb4ad0c78d0799e752eb0317abc2394693e454d29f03738a08bda428632ee812ab69bbe8ee63653819614df0185be25f380c198febb

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            c2e14fcdde0c8b83392f9ca4be76f8b2

            SHA1

            02cc471f91a396cb9358e07832d61143cc6fc3fe

            SHA256

            f1a813c3a05a7d195302c876729188046a0daee20d78386edcc4a1b1fdc34435

            SHA512

            84d7de010b2547834559ee56452fa839dfd5d6a8705db9961c57760bc20bfc8b60231659cf36961c6875adecbc090a31c77b8e33c051adb624dcbbc22d21eea6

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            d72868c942b541c3ef7b2419260ccf09

            SHA1

            a62795490b0802fe5166cec20cc915c2629edba4

            SHA256

            68cb72d3625ac4339013eb6cc79264d7914db90d87c2c701392ba6d1d23621b7

            SHA512

            60a724878d5d07abda8596dd02add204f7789be3fed62a02b1c8856358482988124b6d467494fcf82eae96c12ac8ca6dc923d930899e853cd156cfcb9f7ac12f

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            a7faa299bc6270cef12c6e7ba8a6364f

            SHA1

            460822ace5152ccd19543006eb2868aa6b5491c3

            SHA256

            10919223300f48b55585e99a341d5d2dde8b64454aaa21c58ba7b491127d19a9

            SHA512

            8510bf3ea822f2a6bf322f40df0dc3443b039040c203123372cfdc08a5972f9d570f75211b16b04c437823e3a81e0d1a4009d16481ce1d4e49a8f3b70c3eded0

          • memory/332-61-0x0000000000000000-mapping.dmp
          • memory/572-70-0x0000000000000000-mapping.dmp
          • memory/688-87-0x0000000000000000-mapping.dmp
          • memory/1160-86-0x0000000000000000-mapping.dmp
          • memory/1228-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1228-54-0x0000000075A11000-0x0000000075A13000-memory.dmp
            Filesize

            8KB

          • memory/1228-58-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1332-59-0x0000000000000000-mapping.dmp
          • memory/1428-57-0x0000000000000000-mapping.dmp
          • memory/1776-62-0x0000000000000000-mapping.dmp
          • memory/1816-76-0x0000000000000000-mapping.dmp
          • memory/1888-81-0x0000000000000000-mapping.dmp
          • memory/1988-80-0x0000000000000000-mapping.dmp
          • memory/2036-64-0x0000000000000000-mapping.dmp