Analysis

  • max time kernel
    45s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:54

General

  • Target

    87f57caf17a4bd992e02baf47e504cfc3dc97871a1067c7707ae23de2a6bc4d3.exe

  • Size

    446KB

  • MD5

    11c1d8ae36e64c7cf309d1a1b14eb87d

  • SHA1

    e38b5c116c525a33b321cc05421c22643f9c7800

  • SHA256

    87f57caf17a4bd992e02baf47e504cfc3dc97871a1067c7707ae23de2a6bc4d3

  • SHA512

    3cce40d315724b413e4be6f6cf48cff2b3c3dc14fe809d798744f5b98530fb3147d3f37cf7a5f9eaacb85ca4ec243bae9fa3ea2d76b936831e19b93a65c8e3b7

  • SSDEEP

    6144:XzfHNwFEheig5DXURRxXt3mkpCuIt1928YJxjnR/B3v/v1AQKJlViXS/b:z8EhlgKnDCuW+VxjnlBdRKfJD

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\87f57caf17a4bd992e02baf47e504cfc3dc97871a1067c7707ae23de2a6bc4d3.exe
    "C:\Users\Admin\AppData\Local\Temp\87f57caf17a4bd992e02baf47e504cfc3dc97871a1067c7707ae23de2a6bc4d3.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:1368
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1984
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:932
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:528
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1872
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1072
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:560
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2024
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1880
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1816
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1600
          • 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:1392

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31f9b2e05be1b8762753dc4b0c339711

            SHA1

            ba5cafe4d3e6da8af453c9a51321e0ca8309934a

            SHA256

            b4feada71496e83cedc02b1d97734a3807f650d3d51f639225c1927e1135bfa1

            SHA512

            ae46129757127b7b2221f22800ebcdebef74403a083cc52e93dd23b01e4cf4f9c4cd6723506c7c1a81fcf573259fdfb5f8eb93f984ef8355a43bcb0c6ebb93b9

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            761e27c663b260d7b924ef31f9cb1b02

            SHA1

            94b766e7aa77f10b06396f8843854d6acb3324df

            SHA256

            4ff17f9e9a78e400bdc8330eaa2ab083a221066c5ca40500361534b62109b0d8

            SHA512

            6e75315574a24dfd7ec3191282f57c7a2f3320c4fa2c93c40d3cbb724c91675530d3324be5e69f1112218efec015b76d06133974a5e2f678ef019f28560c8155

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7f6a58037d42535e824609aeeecac139

            SHA1

            185129bc392da7a4081158ac54156df8b086a669

            SHA256

            07d339c3b8ea95a16f73ad1842a969bc04152929ce9c0bd0587677d3310da09c

            SHA512

            5915f47b04408506c50d6f99cf433b6b37ba386d3ca3e43bbe6dbe715269e2d4bd5b5ced3417bfd07b3435ec699615b6db2f10dbae45db2ed7c5970611200dd9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bcb29e9c9527055b5bcaf4b774a1e7bf

            SHA1

            cc8963952088e35dcf113b68f2553617c3dace85

            SHA256

            73914e9aaa93590e766957ffea95a7091a03fc566e8654680520e5715e4f6639

            SHA512

            e0a8f94f15d8016a222a66fc3916127835590f4cee76e99623c7528e8fc9881fc98e946fb703aad04d7d7944df34575d8d67071cbca630beaead413d6e8b9cdb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bcb29e9c9527055b5bcaf4b774a1e7bf

            SHA1

            cc8963952088e35dcf113b68f2553617c3dace85

            SHA256

            73914e9aaa93590e766957ffea95a7091a03fc566e8654680520e5715e4f6639

            SHA512

            e0a8f94f15d8016a222a66fc3916127835590f4cee76e99623c7528e8fc9881fc98e946fb703aad04d7d7944df34575d8d67071cbca630beaead413d6e8b9cdb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            67b936589d3c2de4a07cd5a1cf69464b

            SHA1

            fdea6ac1d5315e57a7c7a01b210aacd81d33c040

            SHA256

            cc35aff9da184a89a2d33e41cf9efceb0eb2f817494c4337ede7915f23d31d40

            SHA512

            c68032ff58e612a2b8845bff87d8bdad58775d81247ae6ed22b69d5f1c5105df8d7b07b0a8e3d957ae7f04d89f8da03484d1d14e6c11b8bb59d9d9f233828359

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            67b936589d3c2de4a07cd5a1cf69464b

            SHA1

            fdea6ac1d5315e57a7c7a01b210aacd81d33c040

            SHA256

            cc35aff9da184a89a2d33e41cf9efceb0eb2f817494c4337ede7915f23d31d40

            SHA512

            c68032ff58e612a2b8845bff87d8bdad58775d81247ae6ed22b69d5f1c5105df8d7b07b0a8e3d957ae7f04d89f8da03484d1d14e6c11b8bb59d9d9f233828359

          • \Users\Admin\AppData\Local\Temp\nst2ACB.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst2ACB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2ACB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2ACB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2ACB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31f9b2e05be1b8762753dc4b0c339711

            SHA1

            ba5cafe4d3e6da8af453c9a51321e0ca8309934a

            SHA256

            b4feada71496e83cedc02b1d97734a3807f650d3d51f639225c1927e1135bfa1

            SHA512

            ae46129757127b7b2221f22800ebcdebef74403a083cc52e93dd23b01e4cf4f9c4cd6723506c7c1a81fcf573259fdfb5f8eb93f984ef8355a43bcb0c6ebb93b9

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31f9b2e05be1b8762753dc4b0c339711

            SHA1

            ba5cafe4d3e6da8af453c9a51321e0ca8309934a

            SHA256

            b4feada71496e83cedc02b1d97734a3807f650d3d51f639225c1927e1135bfa1

            SHA512

            ae46129757127b7b2221f22800ebcdebef74403a083cc52e93dd23b01e4cf4f9c4cd6723506c7c1a81fcf573259fdfb5f8eb93f984ef8355a43bcb0c6ebb93b9

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            31f9b2e05be1b8762753dc4b0c339711

            SHA1

            ba5cafe4d3e6da8af453c9a51321e0ca8309934a

            SHA256

            b4feada71496e83cedc02b1d97734a3807f650d3d51f639225c1927e1135bfa1

            SHA512

            ae46129757127b7b2221f22800ebcdebef74403a083cc52e93dd23b01e4cf4f9c4cd6723506c7c1a81fcf573259fdfb5f8eb93f984ef8355a43bcb0c6ebb93b9

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            761e27c663b260d7b924ef31f9cb1b02

            SHA1

            94b766e7aa77f10b06396f8843854d6acb3324df

            SHA256

            4ff17f9e9a78e400bdc8330eaa2ab083a221066c5ca40500361534b62109b0d8

            SHA512

            6e75315574a24dfd7ec3191282f57c7a2f3320c4fa2c93c40d3cbb724c91675530d3324be5e69f1112218efec015b76d06133974a5e2f678ef019f28560c8155

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            761e27c663b260d7b924ef31f9cb1b02

            SHA1

            94b766e7aa77f10b06396f8843854d6acb3324df

            SHA256

            4ff17f9e9a78e400bdc8330eaa2ab083a221066c5ca40500361534b62109b0d8

            SHA512

            6e75315574a24dfd7ec3191282f57c7a2f3320c4fa2c93c40d3cbb724c91675530d3324be5e69f1112218efec015b76d06133974a5e2f678ef019f28560c8155

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7f6a58037d42535e824609aeeecac139

            SHA1

            185129bc392da7a4081158ac54156df8b086a669

            SHA256

            07d339c3b8ea95a16f73ad1842a969bc04152929ce9c0bd0587677d3310da09c

            SHA512

            5915f47b04408506c50d6f99cf433b6b37ba386d3ca3e43bbe6dbe715269e2d4bd5b5ced3417bfd07b3435ec699615b6db2f10dbae45db2ed7c5970611200dd9

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bcb29e9c9527055b5bcaf4b774a1e7bf

            SHA1

            cc8963952088e35dcf113b68f2553617c3dace85

            SHA256

            73914e9aaa93590e766957ffea95a7091a03fc566e8654680520e5715e4f6639

            SHA512

            e0a8f94f15d8016a222a66fc3916127835590f4cee76e99623c7528e8fc9881fc98e946fb703aad04d7d7944df34575d8d67071cbca630beaead413d6e8b9cdb

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            67b936589d3c2de4a07cd5a1cf69464b

            SHA1

            fdea6ac1d5315e57a7c7a01b210aacd81d33c040

            SHA256

            cc35aff9da184a89a2d33e41cf9efceb0eb2f817494c4337ede7915f23d31d40

            SHA512

            c68032ff58e612a2b8845bff87d8bdad58775d81247ae6ed22b69d5f1c5105df8d7b07b0a8e3d957ae7f04d89f8da03484d1d14e6c11b8bb59d9d9f233828359

          • memory/528-61-0x0000000000000000-mapping.dmp

          • memory/560-75-0x0000000000000000-mapping.dmp

          • memory/932-60-0x0000000000000000-mapping.dmp

          • memory/1072-69-0x0000000000000000-mapping.dmp

          • memory/1216-57-0x0000000000000000-mapping.dmp

          • memory/1368-54-0x0000000074E41000-0x0000000074E43000-memory.dmp

            Filesize

            8KB

          • memory/1600-86-0x0000000000000000-mapping.dmp

          • memory/1816-85-0x0000000000000000-mapping.dmp

          • memory/1872-63-0x0000000000000000-mapping.dmp

          • memory/1880-80-0x0000000000000000-mapping.dmp

          • memory/1984-58-0x0000000000000000-mapping.dmp

          • memory/2024-79-0x0000000000000000-mapping.dmp