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Analysis

  • max time kernel
    67s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 06:02

General

  • Target

    a811157a4b682e6a2b50239221f6daa20b1540a1e1137e2ca6f1c1c22d8252ef.exe

  • Size

    695KB

  • MD5

    bba56ed3e186a8475e92d308a36c3a47

  • SHA1

    f22ecae35a7a7eb2f90423d286e83cc8e1381e9a

  • SHA256

    a811157a4b682e6a2b50239221f6daa20b1540a1e1137e2ca6f1c1c22d8252ef

  • SHA512

    68de4b170d1d724e5dba240cacd2958a511bf2ba334b304abb5f6db27f35cb9100646630ce5901d7d0e01181464852c938cd17eabe13840d6fe9a6293b020a3e

  • SSDEEP

    12288:1Abu3fQ+thk6Ez1bf/SS4AQnOhGPOnGrPfUHF9j4D9uyQNPOTgv:1AbuPPEzxfubnyGPzrPfUHFmYZ2TS

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\a811157a4b682e6a2b50239221f6daa20b1540a1e1137e2ca6f1c1c22d8252ef.exe
    "C:\Users\Admin\AppData\Local\Temp\a811157a4b682e6a2b50239221f6daa20b1540a1e1137e2ca6f1c1c22d8252ef.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:948
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:324
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:268
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1368
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1748
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1336
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:628
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2036
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:968
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1724
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1640
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1796
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:544
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1276

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16cbe27c22390ffbe62002daef575e8d

            SHA1

            6e0be79168a96576daf213d591648d97b79d6cd1

            SHA256

            b9048e64b1f24fd156711ab634485d441b246d61f73efb42cd9264ac3d7acd37

            SHA512

            22e6e8de22857d773f1814c7fb902fdbd8d06816440b1c0b9254438a16ffdcea2a1d9f9f5afbc50c43c110053428e4db22cc2bb2ce141105e798b49d14188a52

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1d9f98f579c26b1a6c560bfece6dd472

            SHA1

            f12a98b0547d4dcc2bbad3f0df319133d7a01bfa

            SHA256

            05358a50b18f060b53bd90d69fa6c8095ef7056e25d626901575bc1fff32aeb1

            SHA512

            eff2fcdfcabeba8cff37e8e2b9181da860135ebb781c47eac1a74f6914c868822cebe08c5c651ea8331b1c4048f30894a4b266fa30cf896a2c96f84968194783

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c3512888fcefab11df5b01e39a8e0f3b

            SHA1

            0561769a8342d2e56b64342c09818247efb120d8

            SHA256

            57445de862fb2087121521f2b1ac36284e92f2823a28c5fd27039a783045cb7c

            SHA512

            6357d1b31a900c1b069d6bad09a484673a3f30ffa1c713f4a6168881fd547002980c1c9312555c043cde92e6f34c127d96501177f2fc0e56c72c71a1576030c7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            714b40d7ae7bf7f349421fffc7a2b0ed

            SHA1

            66c9d1d9fcf6394664a1cfe3a2e0211d315e0cb4

            SHA256

            ab1e9009f28cb35768d4ecffb926ed3f8859b9c5a0dc63442b5338e76e2717d3

            SHA512

            d7f9e555f0572376c78fdb9ddaaff161adfc005eb1acbb6c746585538151c3e412a8c92e944473d7cb64b0cd62326e7dceaf703fe204db87cbf689a211cb34f6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            714b40d7ae7bf7f349421fffc7a2b0ed

            SHA1

            66c9d1d9fcf6394664a1cfe3a2e0211d315e0cb4

            SHA256

            ab1e9009f28cb35768d4ecffb926ed3f8859b9c5a0dc63442b5338e76e2717d3

            SHA512

            d7f9e555f0572376c78fdb9ddaaff161adfc005eb1acbb6c746585538151c3e412a8c92e944473d7cb64b0cd62326e7dceaf703fe204db87cbf689a211cb34f6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            71f60436e13eff992573a79ba93a63c5

            SHA1

            3d69f999272694547b960ff3220ab7a39c5e6f90

            SHA256

            046b7e9e84376eaa4c5925cebf2063ead8cc86e303f6f21f62d6c2eb1c4f587f

            SHA512

            c6f9e5b50700c4729247357c0daaa4e8b152e5465dd0b2c2df0c578c8b345d2addc36df47537bc200beaa7b3889c338e14f5c9f0f7792c0f2bfd321723d46fbf

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            71f60436e13eff992573a79ba93a63c5

            SHA1

            3d69f999272694547b960ff3220ab7a39c5e6f90

            SHA256

            046b7e9e84376eaa4c5925cebf2063ead8cc86e303f6f21f62d6c2eb1c4f587f

            SHA512

            c6f9e5b50700c4729247357c0daaa4e8b152e5465dd0b2c2df0c578c8b345d2addc36df47537bc200beaa7b3889c338e14f5c9f0f7792c0f2bfd321723d46fbf

          • \Users\Admin\AppData\Local\Temp\nse5C08.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nse5C08.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse5C08.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse5C08.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse5C08.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16cbe27c22390ffbe62002daef575e8d

            SHA1

            6e0be79168a96576daf213d591648d97b79d6cd1

            SHA256

            b9048e64b1f24fd156711ab634485d441b246d61f73efb42cd9264ac3d7acd37

            SHA512

            22e6e8de22857d773f1814c7fb902fdbd8d06816440b1c0b9254438a16ffdcea2a1d9f9f5afbc50c43c110053428e4db22cc2bb2ce141105e798b49d14188a52

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16cbe27c22390ffbe62002daef575e8d

            SHA1

            6e0be79168a96576daf213d591648d97b79d6cd1

            SHA256

            b9048e64b1f24fd156711ab634485d441b246d61f73efb42cd9264ac3d7acd37

            SHA512

            22e6e8de22857d773f1814c7fb902fdbd8d06816440b1c0b9254438a16ffdcea2a1d9f9f5afbc50c43c110053428e4db22cc2bb2ce141105e798b49d14188a52

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16cbe27c22390ffbe62002daef575e8d

            SHA1

            6e0be79168a96576daf213d591648d97b79d6cd1

            SHA256

            b9048e64b1f24fd156711ab634485d441b246d61f73efb42cd9264ac3d7acd37

            SHA512

            22e6e8de22857d773f1814c7fb902fdbd8d06816440b1c0b9254438a16ffdcea2a1d9f9f5afbc50c43c110053428e4db22cc2bb2ce141105e798b49d14188a52

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1d9f98f579c26b1a6c560bfece6dd472

            SHA1

            f12a98b0547d4dcc2bbad3f0df319133d7a01bfa

            SHA256

            05358a50b18f060b53bd90d69fa6c8095ef7056e25d626901575bc1fff32aeb1

            SHA512

            eff2fcdfcabeba8cff37e8e2b9181da860135ebb781c47eac1a74f6914c868822cebe08c5c651ea8331b1c4048f30894a4b266fa30cf896a2c96f84968194783

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1d9f98f579c26b1a6c560bfece6dd472

            SHA1

            f12a98b0547d4dcc2bbad3f0df319133d7a01bfa

            SHA256

            05358a50b18f060b53bd90d69fa6c8095ef7056e25d626901575bc1fff32aeb1

            SHA512

            eff2fcdfcabeba8cff37e8e2b9181da860135ebb781c47eac1a74f6914c868822cebe08c5c651ea8331b1c4048f30894a4b266fa30cf896a2c96f84968194783

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c3512888fcefab11df5b01e39a8e0f3b

            SHA1

            0561769a8342d2e56b64342c09818247efb120d8

            SHA256

            57445de862fb2087121521f2b1ac36284e92f2823a28c5fd27039a783045cb7c

            SHA512

            6357d1b31a900c1b069d6bad09a484673a3f30ffa1c713f4a6168881fd547002980c1c9312555c043cde92e6f34c127d96501177f2fc0e56c72c71a1576030c7

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            714b40d7ae7bf7f349421fffc7a2b0ed

            SHA1

            66c9d1d9fcf6394664a1cfe3a2e0211d315e0cb4

            SHA256

            ab1e9009f28cb35768d4ecffb926ed3f8859b9c5a0dc63442b5338e76e2717d3

            SHA512

            d7f9e555f0572376c78fdb9ddaaff161adfc005eb1acbb6c746585538151c3e412a8c92e944473d7cb64b0cd62326e7dceaf703fe204db87cbf689a211cb34f6

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            71f60436e13eff992573a79ba93a63c5

            SHA1

            3d69f999272694547b960ff3220ab7a39c5e6f90

            SHA256

            046b7e9e84376eaa4c5925cebf2063ead8cc86e303f6f21f62d6c2eb1c4f587f

            SHA512

            c6f9e5b50700c4729247357c0daaa4e8b152e5465dd0b2c2df0c578c8b345d2addc36df47537bc200beaa7b3889c338e14f5c9f0f7792c0f2bfd321723d46fbf

          • memory/948-91-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/948-59-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/948-79-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/948-54-0x00000000761E1000-0x00000000761E3000-memory.dmp

            Filesize

            8KB