Analysis

  • max time kernel
    148s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:57

General

  • Target

    4783ec93043f66b50b93665d60ab8e270e5c382e7d8275df94bb25d63ed9f5c8.exe

  • Size

    446KB

  • MD5

    9c3b396e1efc3b65c5c304f12a63c38e

  • SHA1

    4e1bf6ac8c6aba0ba288d112e55c0b663e343cf0

  • SHA256

    4783ec93043f66b50b93665d60ab8e270e5c382e7d8275df94bb25d63ed9f5c8

  • SHA512

    e09d1003550678a73ad9a8112b118a2ea0173d46d9576e05c8d24b12fbb26b48ebc7d48bebdfa6ec558535a90d506d182e086d561859f43654d86430edbb312a

  • SSDEEP

    12288:ndXCgfUFIqz8WZvVQwTjRvWW1KFK/H3Lh:ndXpMBz8WZ+wTjRbiK/XLh

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4783ec93043f66b50b93665d60ab8e270e5c382e7d8275df94bb25d63ed9f5c8.exe
    "C:\Users\Admin\AppData\Local\Temp\4783ec93043f66b50b93665d60ab8e270e5c382e7d8275df94bb25d63ed9f5c8.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:3848
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3004
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4812
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4828
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2280
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4348
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2912
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4156
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1488
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1684
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4436
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4048
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:3972
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:376

          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:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nswAC0.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            106KB

            MD5

            c85067a4fc81e51016a74793c06124e0

            SHA1

            3150842f5474176b3d9f17a59eb05daa228d9263

            SHA256

            91b76c7351405ea1148baa9ff58e0ab87b85b27eed34e1843cbbc572af125dce

            SHA512

            763294f711d392c706d8a9d7d82df551fa1c535c1b33ac8925f20b1679daa42393d8f6eb34b883d43d712dae33796e0ce504357c76c153d13a8b1d6b0fb524c1

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

            106KB

            MD5

            c85067a4fc81e51016a74793c06124e0

            SHA1

            3150842f5474176b3d9f17a59eb05daa228d9263

            SHA256

            91b76c7351405ea1148baa9ff58e0ab87b85b27eed34e1843cbbc572af125dce

            SHA512

            763294f711d392c706d8a9d7d82df551fa1c535c1b33ac8925f20b1679daa42393d8f6eb34b883d43d712dae33796e0ce504357c76c153d13a8b1d6b0fb524c1

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

            106KB

            MD5

            c85067a4fc81e51016a74793c06124e0

            SHA1

            3150842f5474176b3d9f17a59eb05daa228d9263

            SHA256

            91b76c7351405ea1148baa9ff58e0ab87b85b27eed34e1843cbbc572af125dce

            SHA512

            763294f711d392c706d8a9d7d82df551fa1c535c1b33ac8925f20b1679daa42393d8f6eb34b883d43d712dae33796e0ce504357c76c153d13a8b1d6b0fb524c1

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

            106KB

            MD5

            c85067a4fc81e51016a74793c06124e0

            SHA1

            3150842f5474176b3d9f17a59eb05daa228d9263

            SHA256

            91b76c7351405ea1148baa9ff58e0ab87b85b27eed34e1843cbbc572af125dce

            SHA512

            763294f711d392c706d8a9d7d82df551fa1c535c1b33ac8925f20b1679daa42393d8f6eb34b883d43d712dae33796e0ce504357c76c153d13a8b1d6b0fb524c1

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

            241KB

            MD5

            89e93e618b1b6ef92823697898b1cd66

            SHA1

            8addbd8f1aba3c2eff7ff5632f40513ba1448ced

            SHA256

            9ca70b2fb2f04fb59e7926a886f15bef2cae259f8bb9ed1c780323c1d6f0ccd7

            SHA512

            cb1d4e448a5be1f2abbc57066e3fcba124e0ff6b3979ed1fd5ff545af2d7d25c8307dbac3ce48913d8dd9cee5dfe502a19932e937cae8eba15591eaec3ccee7b

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

            241KB

            MD5

            89e93e618b1b6ef92823697898b1cd66

            SHA1

            8addbd8f1aba3c2eff7ff5632f40513ba1448ced

            SHA256

            9ca70b2fb2f04fb59e7926a886f15bef2cae259f8bb9ed1c780323c1d6f0ccd7

            SHA512

            cb1d4e448a5be1f2abbc57066e3fcba124e0ff6b3979ed1fd5ff545af2d7d25c8307dbac3ce48913d8dd9cee5dfe502a19932e937cae8eba15591eaec3ccee7b

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

            241KB

            MD5

            89e93e618b1b6ef92823697898b1cd66

            SHA1

            8addbd8f1aba3c2eff7ff5632f40513ba1448ced

            SHA256

            9ca70b2fb2f04fb59e7926a886f15bef2cae259f8bb9ed1c780323c1d6f0ccd7

            SHA512

            cb1d4e448a5be1f2abbc57066e3fcba124e0ff6b3979ed1fd5ff545af2d7d25c8307dbac3ce48913d8dd9cee5dfe502a19932e937cae8eba15591eaec3ccee7b

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

            108KB

            MD5

            45b20a946398e5a38093d328a018c647

            SHA1

            326ef7f60a1fb2e06a194451f25ddb91851c54a7

            SHA256

            83b89ab899e91734b7018d2402744b74b7ed486bc4502c43e37996a760f46a9b

            SHA512

            3f82b7e1109f1e14d07d47075493486ec05c01d2fa24df001f5d116bffae246a10109785cb6f670234e18fbe04d38c4968718b64eb96d52927212afb0c3dbbff

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

            108KB

            MD5

            45b20a946398e5a38093d328a018c647

            SHA1

            326ef7f60a1fb2e06a194451f25ddb91851c54a7

            SHA256

            83b89ab899e91734b7018d2402744b74b7ed486bc4502c43e37996a760f46a9b

            SHA512

            3f82b7e1109f1e14d07d47075493486ec05c01d2fa24df001f5d116bffae246a10109785cb6f670234e18fbe04d38c4968718b64eb96d52927212afb0c3dbbff

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

            176KB

            MD5

            f8e01fa62ca557f2a57d244b589ebd0f

            SHA1

            5907438b000545edc6e052e1acefaa68a7bf4878

            SHA256

            f60e3bfb54e3bfcae466437cb1afb383158e369c799534488373a5a417334320

            SHA512

            ac040c5f961499f8d881ae693bbbd2d3d2ee889f4843f0b02f968598b2b94df4cffd58fd73e97c68eb9a16e7c39857c03d7f0639d92b07ed1006ce2893e01020

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

            176KB

            MD5

            f8e01fa62ca557f2a57d244b589ebd0f

            SHA1

            5907438b000545edc6e052e1acefaa68a7bf4878

            SHA256

            f60e3bfb54e3bfcae466437cb1afb383158e369c799534488373a5a417334320

            SHA512

            ac040c5f961499f8d881ae693bbbd2d3d2ee889f4843f0b02f968598b2b94df4cffd58fd73e97c68eb9a16e7c39857c03d7f0639d92b07ed1006ce2893e01020

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

            176KB

            MD5

            f8e01fa62ca557f2a57d244b589ebd0f

            SHA1

            5907438b000545edc6e052e1acefaa68a7bf4878

            SHA256

            f60e3bfb54e3bfcae466437cb1afb383158e369c799534488373a5a417334320

            SHA512

            ac040c5f961499f8d881ae693bbbd2d3d2ee889f4843f0b02f968598b2b94df4cffd58fd73e97c68eb9a16e7c39857c03d7f0639d92b07ed1006ce2893e01020

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

            158KB

            MD5

            afabb7c4315409460e11d1d3349ecab6

            SHA1

            f3d9befa759526708217727ca578dd1a8890d2d0

            SHA256

            aad7df19d317c912b78205d0c5a62b6a0efc243eced066646b468452a9bc40d7

            SHA512

            659ad2c85b5a62b372d27ba07d571d333e88005f6305e91c2c99fa80458245ffdc39b878f3f2ccb292ffd3352c7e096eeeceb72f60651ea1845ecf4396182112

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

            158KB

            MD5

            afabb7c4315409460e11d1d3349ecab6

            SHA1

            f3d9befa759526708217727ca578dd1a8890d2d0

            SHA256

            aad7df19d317c912b78205d0c5a62b6a0efc243eced066646b468452a9bc40d7

            SHA512

            659ad2c85b5a62b372d27ba07d571d333e88005f6305e91c2c99fa80458245ffdc39b878f3f2ccb292ffd3352c7e096eeeceb72f60651ea1845ecf4396182112

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

            158KB

            MD5

            afabb7c4315409460e11d1d3349ecab6

            SHA1

            f3d9befa759526708217727ca578dd1a8890d2d0

            SHA256

            aad7df19d317c912b78205d0c5a62b6a0efc243eced066646b468452a9bc40d7

            SHA512

            659ad2c85b5a62b372d27ba07d571d333e88005f6305e91c2c99fa80458245ffdc39b878f3f2ccb292ffd3352c7e096eeeceb72f60651ea1845ecf4396182112

          • memory/1488-157-0x0000000000000000-mapping.dmp
          • memory/1684-158-0x0000000000000000-mapping.dmp
          • memory/2280-140-0x0000000000000000-mapping.dmp
          • memory/2912-146-0x0000000000000000-mapping.dmp
          • memory/3004-135-0x0000000000000000-mapping.dmp
          • memory/4048-165-0x0000000000000000-mapping.dmp
          • memory/4156-152-0x0000000000000000-mapping.dmp
          • memory/4348-141-0x0000000000000000-mapping.dmp
          • memory/4436-164-0x0000000000000000-mapping.dmp
          • memory/4812-136-0x0000000000000000-mapping.dmp
          • memory/4828-139-0x0000000000000000-mapping.dmp