Analysis

  • max time kernel
    41s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:12

General

  • Target

    caa901081326558e2a7975e0bf0acd9b9c77c746124c626e9d992b8d81740e30.exe

  • Size

    603KB

  • MD5

    b869f26a5a813b514d47c121064d462e

  • SHA1

    1e6b36c1855b386ada407e7744b9750a559233da

  • SHA256

    caa901081326558e2a7975e0bf0acd9b9c77c746124c626e9d992b8d81740e30

  • SHA512

    7aebcc08959b0a1421fb593e6b204266474d298167a0a0bc71a6d81b301bd53116e8759fe4101c6fa6fecd36482b2b6793df96ddc1fef4aaeb60116fcf056bd5

  • SSDEEP

    12288:6Iny5DYTfIgXjF657xv2yoSnD9pkdQTHqpZUHA9LLViQArHBF8:cUTfXZ65t+yo6xFHQesp2FF

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\caa901081326558e2a7975e0bf0acd9b9c77c746124c626e9d992b8d81740e30.exe
    "C:\Users\Admin\AppData\Local\Temp\caa901081326558e2a7975e0bf0acd9b9c77c746124c626e9d992b8d81740e30.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:2024
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1784
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:952
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1576
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1796
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1560
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1156
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1652
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1004
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1928
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1704

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            065171536f25cf6a1704e28e83fdeba6

            SHA1

            9811e8f24b0f6126bcb4efc5992af8adeac5d6ff

            SHA256

            5dcaabbbd4765af80c7e2ec6dac4da24df68fed71c074b94baff36baa593a9b5

            SHA512

            a1dbb32026e4dfb4e4d4e42d14634bb4844f826b16284d12ba37f35f818112588e8992577e2ca52b14608ad1d58e9d4bb3b9173e0dc9be7a24711d2bdcd31c26

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            094fb92c53e144fb0c54a18fcc8d570a

            SHA1

            62b34a204b7d74e0715e121f1d32e5a22d8bb930

            SHA256

            cf547f7ad4d48cb4bc17302e34c6d6efadd5acfc99d8bbfa2f6dd6d65911cb81

            SHA512

            e6f6d61e8a68508b19537c82915a1aa123182824f636615a8a2dc71e2dbc549200dfc461380cd3480289aa3b902686e13192d764ef3f7fc4e496c7dde365cb1c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            881b4283170fb7cbc3e3d60960f2bec6

            SHA1

            1e4d949887ed4438bda52c14fe6101fc37551b2d

            SHA256

            12a2912b42aac37fea642da790f313f44f30ad2b3c22fc27d7f0e429dde7fd64

            SHA512

            522e4f88f36be775e6d1627714f46c99871e766f31f5878e015cd7202a08629bba31df7dd4eb401cbe09b6529431add97268a0ba3df21ae64f582e10ea438315

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            11a8902f482669ad62b9bb24c2385808

            SHA1

            756d29fd6d904ac66e0d29604ed8e45eea7fc9fe

            SHA256

            05976265470ef11ee39bc578a84df717def91af26ebf0abb4ca8e9e27f25d82c

            SHA512

            4b3cbe2845f4c4aa143b4fea80f266ecc0ea16e7571f9f28245d51a94e0c2383742887500184a46f020d621e249d4ceec06ea165deb44bae633d56de92a5a18e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            11a8902f482669ad62b9bb24c2385808

            SHA1

            756d29fd6d904ac66e0d29604ed8e45eea7fc9fe

            SHA256

            05976265470ef11ee39bc578a84df717def91af26ebf0abb4ca8e9e27f25d82c

            SHA512

            4b3cbe2845f4c4aa143b4fea80f266ecc0ea16e7571f9f28245d51a94e0c2383742887500184a46f020d621e249d4ceec06ea165deb44bae633d56de92a5a18e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d3a5d15c9fb1d4277c1c188fc26f2ce1

            SHA1

            f74e6e99c429d476dce470a5c92a216a73778c7e

            SHA256

            4ca2cb5f09117062f437cd6fa7aadb10ca07d685440fb726fcc913e877d2050f

            SHA512

            aada7cf4777c3eefd79eacca9a135a8295d26ef01388f05e8dd37d3aac6e3a9786f5f3b895ae1d318fa881cb446cb62a84c4f8d86483a762b4d5cf8cc24c8c17

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d3a5d15c9fb1d4277c1c188fc26f2ce1

            SHA1

            f74e6e99c429d476dce470a5c92a216a73778c7e

            SHA256

            4ca2cb5f09117062f437cd6fa7aadb10ca07d685440fb726fcc913e877d2050f

            SHA512

            aada7cf4777c3eefd79eacca9a135a8295d26ef01388f05e8dd37d3aac6e3a9786f5f3b895ae1d318fa881cb446cb62a84c4f8d86483a762b4d5cf8cc24c8c17

          • \Users\Admin\AppData\Local\Temp\nsj41B5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj41B5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj41B5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj41B5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj41B5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            065171536f25cf6a1704e28e83fdeba6

            SHA1

            9811e8f24b0f6126bcb4efc5992af8adeac5d6ff

            SHA256

            5dcaabbbd4765af80c7e2ec6dac4da24df68fed71c074b94baff36baa593a9b5

            SHA512

            a1dbb32026e4dfb4e4d4e42d14634bb4844f826b16284d12ba37f35f818112588e8992577e2ca52b14608ad1d58e9d4bb3b9173e0dc9be7a24711d2bdcd31c26

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            065171536f25cf6a1704e28e83fdeba6

            SHA1

            9811e8f24b0f6126bcb4efc5992af8adeac5d6ff

            SHA256

            5dcaabbbd4765af80c7e2ec6dac4da24df68fed71c074b94baff36baa593a9b5

            SHA512

            a1dbb32026e4dfb4e4d4e42d14634bb4844f826b16284d12ba37f35f818112588e8992577e2ca52b14608ad1d58e9d4bb3b9173e0dc9be7a24711d2bdcd31c26

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            065171536f25cf6a1704e28e83fdeba6

            SHA1

            9811e8f24b0f6126bcb4efc5992af8adeac5d6ff

            SHA256

            5dcaabbbd4765af80c7e2ec6dac4da24df68fed71c074b94baff36baa593a9b5

            SHA512

            a1dbb32026e4dfb4e4d4e42d14634bb4844f826b16284d12ba37f35f818112588e8992577e2ca52b14608ad1d58e9d4bb3b9173e0dc9be7a24711d2bdcd31c26

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            094fb92c53e144fb0c54a18fcc8d570a

            SHA1

            62b34a204b7d74e0715e121f1d32e5a22d8bb930

            SHA256

            cf547f7ad4d48cb4bc17302e34c6d6efadd5acfc99d8bbfa2f6dd6d65911cb81

            SHA512

            e6f6d61e8a68508b19537c82915a1aa123182824f636615a8a2dc71e2dbc549200dfc461380cd3480289aa3b902686e13192d764ef3f7fc4e496c7dde365cb1c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            094fb92c53e144fb0c54a18fcc8d570a

            SHA1

            62b34a204b7d74e0715e121f1d32e5a22d8bb930

            SHA256

            cf547f7ad4d48cb4bc17302e34c6d6efadd5acfc99d8bbfa2f6dd6d65911cb81

            SHA512

            e6f6d61e8a68508b19537c82915a1aa123182824f636615a8a2dc71e2dbc549200dfc461380cd3480289aa3b902686e13192d764ef3f7fc4e496c7dde365cb1c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            881b4283170fb7cbc3e3d60960f2bec6

            SHA1

            1e4d949887ed4438bda52c14fe6101fc37551b2d

            SHA256

            12a2912b42aac37fea642da790f313f44f30ad2b3c22fc27d7f0e429dde7fd64

            SHA512

            522e4f88f36be775e6d1627714f46c99871e766f31f5878e015cd7202a08629bba31df7dd4eb401cbe09b6529431add97268a0ba3df21ae64f582e10ea438315

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            11a8902f482669ad62b9bb24c2385808

            SHA1

            756d29fd6d904ac66e0d29604ed8e45eea7fc9fe

            SHA256

            05976265470ef11ee39bc578a84df717def91af26ebf0abb4ca8e9e27f25d82c

            SHA512

            4b3cbe2845f4c4aa143b4fea80f266ecc0ea16e7571f9f28245d51a94e0c2383742887500184a46f020d621e249d4ceec06ea165deb44bae633d56de92a5a18e

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d3a5d15c9fb1d4277c1c188fc26f2ce1

            SHA1

            f74e6e99c429d476dce470a5c92a216a73778c7e

            SHA256

            4ca2cb5f09117062f437cd6fa7aadb10ca07d685440fb726fcc913e877d2050f

            SHA512

            aada7cf4777c3eefd79eacca9a135a8295d26ef01388f05e8dd37d3aac6e3a9786f5f3b895ae1d318fa881cb446cb62a84c4f8d86483a762b4d5cf8cc24c8c17

          • memory/952-58-0x0000000000000000-mapping.dmp

          • memory/1004-87-0x0000000000000000-mapping.dmp

          • memory/1156-81-0x0000000000000000-mapping.dmp

          • memory/1168-80-0x0000000000000000-mapping.dmp

          • memory/1560-70-0x0000000000000000-mapping.dmp

          • memory/1576-61-0x0000000000000000-mapping.dmp

          • memory/1644-60-0x0000000000000000-mapping.dmp

          • memory/1652-86-0x0000000000000000-mapping.dmp

          • memory/1688-76-0x0000000000000000-mapping.dmp

          • memory/1784-57-0x0000000000000000-mapping.dmp

          • memory/1796-64-0x0000000000000000-mapping.dmp

          • memory/2024-54-0x0000000075F81000-0x0000000075F83000-memory.dmp

            Filesize

            8KB

          • memory/2024-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2024-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB