Analysis

  • max time kernel
    63s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:33

General

  • Target

    0f1dc21e5b45120f0c931424c37edecaa5c1859c8f8dd08d5c6b5a2e04466d16.exe

  • Size

    602KB

  • MD5

    613a24ebd3af0d3606a157b79f257451

  • SHA1

    1b2408ac920ff1e26b6c1c16780baa770b6e248b

  • SHA256

    0f1dc21e5b45120f0c931424c37edecaa5c1859c8f8dd08d5c6b5a2e04466d16

  • SHA512

    d4e6e17e29628efa540b5fcb9261999b575182cde00ee0b1c82d0a0446065dd3bcb40b253e0ec78c8107a65e1c70d50f08afa1532f6fe6c0f3da9f780fd5f5fb

  • SSDEEP

    12288:cIny5DYTSIvc4606gsVb4GdfZJGmRWcc2R0Kr0QAuqP6Ws:6UTSQcK64GgYWCCuWhs

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\0f1dc21e5b45120f0c931424c37edecaa5c1859c8f8dd08d5c6b5a2e04466d16.exe
    "C:\Users\Admin\AppData\Local\Temp\0f1dc21e5b45120f0c931424c37edecaa5c1859c8f8dd08d5c6b5a2e04466d16.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:1764
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1268
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:848
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:876
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:964
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1420
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:304
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:316
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:900
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1528
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1644
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1972

          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

            cce4bd21d18563079a13fcbf8e875d41

            SHA1

            43fab16b0e423d90b7ab0cb89f479b3f43fd703a

            SHA256

            944eb53e1e88e101ccdecec9a93055abe7bc14627c84a4f081b234f54134edd2

            SHA512

            d8af17071928aba94b8cc0977c2b6f61b60fa108ff20b3d47cd4cd6dc0b6f4245f99e0b3d5fa5d307bc84ea760b20858ad5da618e4cd44c978b4f3cd63d29be7

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

            243KB

            MD5

            13d59de789c21e99e1cb79f17b0731d4

            SHA1

            e8a509344738898da56850f2ae3cc5db52c9d601

            SHA256

            68691b506ed623c0fc8771803bcf474417b669c03992d2a684077415e4267a1a

            SHA512

            50564be25328acfcb2a34f5ba13e5a538adba4e3022d63d57c0668a8237b8d15a55be29a1c980e18df5c2d56bf075b5b5fc0d42892c883ef6fe05e76c8f3ab3c

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

            108KB

            MD5

            528c103eb26f721cb5181ebd47aae556

            SHA1

            ec229abf5a85a4506472ea3b2e8dedb691f56090

            SHA256

            31523245e60797f7d8a91e9eec031dbb81adacb3c2a9563c67ccbdac5178b0e9

            SHA512

            1690730a9d8486bbce3e5621cf50fdd2b9647da151ab9280098041a45bde4c59280d9f3e4c725a5f0bad4365a3be014282cfac7cb7f7317632ce3db49f952606

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

            176KB

            MD5

            d80ae83996a6c92923bd175519c725a8

            SHA1

            dc41fa22a36d28755cb20c7f357348976f322097

            SHA256

            b85bf591ba9a4ea847b3d14e2ef07e1d242550244a22f09d217a182e5d099151

            SHA512

            ad52db0f84d36d66be5a8194d98772951adf0704ddb32a2582de1a4addb2b85e9db3664c2576c5068f69de69ed3b93c1521a52a6e23fcc505c76f2a64c756b8b

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

            176KB

            MD5

            d80ae83996a6c92923bd175519c725a8

            SHA1

            dc41fa22a36d28755cb20c7f357348976f322097

            SHA256

            b85bf591ba9a4ea847b3d14e2ef07e1d242550244a22f09d217a182e5d099151

            SHA512

            ad52db0f84d36d66be5a8194d98772951adf0704ddb32a2582de1a4addb2b85e9db3664c2576c5068f69de69ed3b93c1521a52a6e23fcc505c76f2a64c756b8b

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

            159KB

            MD5

            d5c012640141e7b23306d4c11407b145

            SHA1

            aa2377d8e99e62a6e394789a4a1d349681ad66f4

            SHA256

            f7168e7c07de3896d0471003873d1b96ffd0a006fbbe983d93fc57126d3ce300

            SHA512

            986281dccb0bed56aafb4b9ee0e31dd7bb910ffc8a56c75cb05c2ca4db1af6290fe390838057a9a6867525919f51a8d3be5622c7ed1603bfb6fb29806bbc5ac3

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

            159KB

            MD5

            d5c012640141e7b23306d4c11407b145

            SHA1

            aa2377d8e99e62a6e394789a4a1d349681ad66f4

            SHA256

            f7168e7c07de3896d0471003873d1b96ffd0a006fbbe983d93fc57126d3ce300

            SHA512

            986281dccb0bed56aafb4b9ee0e31dd7bb910ffc8a56c75cb05c2ca4db1af6290fe390838057a9a6867525919f51a8d3be5622c7ed1603bfb6fb29806bbc5ac3

          • \Users\Admin\AppData\Local\Temp\nsi10F4.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsi10F4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi10F4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi10F4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi10F4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cce4bd21d18563079a13fcbf8e875d41

            SHA1

            43fab16b0e423d90b7ab0cb89f479b3f43fd703a

            SHA256

            944eb53e1e88e101ccdecec9a93055abe7bc14627c84a4f081b234f54134edd2

            SHA512

            d8af17071928aba94b8cc0977c2b6f61b60fa108ff20b3d47cd4cd6dc0b6f4245f99e0b3d5fa5d307bc84ea760b20858ad5da618e4cd44c978b4f3cd63d29be7

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cce4bd21d18563079a13fcbf8e875d41

            SHA1

            43fab16b0e423d90b7ab0cb89f479b3f43fd703a

            SHA256

            944eb53e1e88e101ccdecec9a93055abe7bc14627c84a4f081b234f54134edd2

            SHA512

            d8af17071928aba94b8cc0977c2b6f61b60fa108ff20b3d47cd4cd6dc0b6f4245f99e0b3d5fa5d307bc84ea760b20858ad5da618e4cd44c978b4f3cd63d29be7

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cce4bd21d18563079a13fcbf8e875d41

            SHA1

            43fab16b0e423d90b7ab0cb89f479b3f43fd703a

            SHA256

            944eb53e1e88e101ccdecec9a93055abe7bc14627c84a4f081b234f54134edd2

            SHA512

            d8af17071928aba94b8cc0977c2b6f61b60fa108ff20b3d47cd4cd6dc0b6f4245f99e0b3d5fa5d307bc84ea760b20858ad5da618e4cd44c978b4f3cd63d29be7

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            13d59de789c21e99e1cb79f17b0731d4

            SHA1

            e8a509344738898da56850f2ae3cc5db52c9d601

            SHA256

            68691b506ed623c0fc8771803bcf474417b669c03992d2a684077415e4267a1a

            SHA512

            50564be25328acfcb2a34f5ba13e5a538adba4e3022d63d57c0668a8237b8d15a55be29a1c980e18df5c2d56bf075b5b5fc0d42892c883ef6fe05e76c8f3ab3c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            13d59de789c21e99e1cb79f17b0731d4

            SHA1

            e8a509344738898da56850f2ae3cc5db52c9d601

            SHA256

            68691b506ed623c0fc8771803bcf474417b669c03992d2a684077415e4267a1a

            SHA512

            50564be25328acfcb2a34f5ba13e5a538adba4e3022d63d57c0668a8237b8d15a55be29a1c980e18df5c2d56bf075b5b5fc0d42892c883ef6fe05e76c8f3ab3c

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            528c103eb26f721cb5181ebd47aae556

            SHA1

            ec229abf5a85a4506472ea3b2e8dedb691f56090

            SHA256

            31523245e60797f7d8a91e9eec031dbb81adacb3c2a9563c67ccbdac5178b0e9

            SHA512

            1690730a9d8486bbce3e5621cf50fdd2b9647da151ab9280098041a45bde4c59280d9f3e4c725a5f0bad4365a3be014282cfac7cb7f7317632ce3db49f952606

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            d80ae83996a6c92923bd175519c725a8

            SHA1

            dc41fa22a36d28755cb20c7f357348976f322097

            SHA256

            b85bf591ba9a4ea847b3d14e2ef07e1d242550244a22f09d217a182e5d099151

            SHA512

            ad52db0f84d36d66be5a8194d98772951adf0704ddb32a2582de1a4addb2b85e9db3664c2576c5068f69de69ed3b93c1521a52a6e23fcc505c76f2a64c756b8b

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            d5c012640141e7b23306d4c11407b145

            SHA1

            aa2377d8e99e62a6e394789a4a1d349681ad66f4

            SHA256

            f7168e7c07de3896d0471003873d1b96ffd0a006fbbe983d93fc57126d3ce300

            SHA512

            986281dccb0bed56aafb4b9ee0e31dd7bb910ffc8a56c75cb05c2ca4db1af6290fe390838057a9a6867525919f51a8d3be5622c7ed1603bfb6fb29806bbc5ac3

          • memory/304-81-0x0000000000000000-mapping.dmp
          • memory/316-82-0x0000000000000000-mapping.dmp
          • memory/848-61-0x0000000000000000-mapping.dmp
          • memory/876-64-0x0000000000000000-mapping.dmp
          • memory/900-87-0x0000000000000000-mapping.dmp
          • memory/964-71-0x0000000000000000-mapping.dmp
          • memory/972-57-0x0000000000000000-mapping.dmp
          • memory/1268-58-0x0000000000000000-mapping.dmp
          • memory/1420-77-0x0000000000000000-mapping.dmp
          • memory/1472-60-0x0000000000000000-mapping.dmp
          • memory/1528-88-0x0000000000000000-mapping.dmp
          • memory/1764-54-0x0000000075001000-0x0000000075003000-memory.dmp
            Filesize

            8KB

          • memory/1764-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1764-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1764-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB