Analysis

  • max time kernel
    101s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:55

General

  • Target

    7c8d511a7cedbf9007f2facc3484e3647fb5d8bd17eb1c6bfcbae52f60f8c9f6.exe

  • Size

    446KB

  • MD5

    e1b045acd4958b17581e0efc4b6d88ae

  • SHA1

    b2ebf3f0237bdacaf1258abcd9704d63365a6306

  • SHA256

    7c8d511a7cedbf9007f2facc3484e3647fb5d8bd17eb1c6bfcbae52f60f8c9f6

  • SHA512

    7edafc14557cb9e7a87634828ab41ac8540aca8a003b6a666341eb4795b37f4d460518d1f67b7864a89329392c1db7af3956970df6f30c6d0f0312ee2fbbef93

  • SSDEEP

    12288:5kqUb1vztYsRiMo9RrZQfDlrOXV+KQK0zrx:5hAYsE9IB6XVYFzrx

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\7c8d511a7cedbf9007f2facc3484e3647fb5d8bd17eb1c6bfcbae52f60f8c9f6.exe
    "C:\Users\Admin\AppData\Local\Temp\7c8d511a7cedbf9007f2facc3484e3647fb5d8bd17eb1c6bfcbae52f60f8c9f6.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:1344
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1620
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:612
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1672
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:632
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:732
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:796
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1660
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1832
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2040
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1504
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1684
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:696
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1308

          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

            3edde722206c469b23bfd632688b5854

            SHA1

            94ff004d85eb32ffa530387cb27c83092d31d840

            SHA256

            a552cac66a0c3799bc97472ac8629fbe7b4407b0d0779d358d7a486c8caf9e8e

            SHA512

            e629c0ebe65299838c35e2f9111d60d6ef393bd5bf5a9663cc5344798e7a1fdc098c083046309dc3f7ae2149a50f424a10d57e99aca900d41e4235d2bc2bed20

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

            241KB

            MD5

            b2bf879e403f31f0b09a9fae3b7e2d15

            SHA1

            30d0c2353661a8fab3e81a4c5a8776ecac31eb07

            SHA256

            2b252306981cb94c8688eb6f02601507d05e8f1e496cd63bfcefe07344d3e896

            SHA512

            8d951402ca6aa31573ec0d13ba4ccc32af489898b3d2817736d9166a077e229497452e8fd544df7eba695563e5aa395669c9f8ff40153eb3bee7334ea1d860ca

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

            108KB

            MD5

            a8f641819e94b3ee4bad8d7537ee65b8

            SHA1

            e1f3ea0be10df2e801ec681204dd1300eaa91f6b

            SHA256

            7cf2a329c890f53fc916e6710559d0d395b6223f0b9f8e45d553f950527572dc

            SHA512

            02b498403c2ea1e009a5081e7a7fa50ecd0e6ac5d1fa6b7cb2585d2224b957ebd504130522fc91bd0f25cc8e2e2bf481e325ad821940575bf8125eb13dafff90

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

            176KB

            MD5

            12961ad8a354eb25634b970a4397f94d

            SHA1

            5e0a473eba52419452b19d392687811b250fd62e

            SHA256

            13dea89608555e419f0441dde40c2eb588a505f45d04e6e792bd9d68433752a1

            SHA512

            61e9fc27ede3b05255dd3fe0d7bf551d0167548ca642c11504599e1720a08f54b66c4a630c1a9c97a8930a9d2df758abdbfd834410159046ad48240edb839dc4

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

            176KB

            MD5

            12961ad8a354eb25634b970a4397f94d

            SHA1

            5e0a473eba52419452b19d392687811b250fd62e

            SHA256

            13dea89608555e419f0441dde40c2eb588a505f45d04e6e792bd9d68433752a1

            SHA512

            61e9fc27ede3b05255dd3fe0d7bf551d0167548ca642c11504599e1720a08f54b66c4a630c1a9c97a8930a9d2df758abdbfd834410159046ad48240edb839dc4

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

            159KB

            MD5

            fcba2ebce550b48409c179e579aa54b4

            SHA1

            ed010cb895f7561b81e261676bade732bfd7ca18

            SHA256

            2645803f6a08cdfe2eb5cef581b343c969938d9be3230eb7ebdb0d0fb74af98e

            SHA512

            5894c7e44ff9551f90f02e892bea2a097624407d2844790d0bef8484d4596b50847871493b079753bb30e658d9a9bcad5ea60e51adfa1a63d2be60dbbe277c89

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

            159KB

            MD5

            fcba2ebce550b48409c179e579aa54b4

            SHA1

            ed010cb895f7561b81e261676bade732bfd7ca18

            SHA256

            2645803f6a08cdfe2eb5cef581b343c969938d9be3230eb7ebdb0d0fb74af98e

            SHA512

            5894c7e44ff9551f90f02e892bea2a097624407d2844790d0bef8484d4596b50847871493b079753bb30e658d9a9bcad5ea60e51adfa1a63d2be60dbbe277c89

          • \Users\Admin\AppData\Local\Temp\nst2281.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst2281.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2281.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2281.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2281.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            3edde722206c469b23bfd632688b5854

            SHA1

            94ff004d85eb32ffa530387cb27c83092d31d840

            SHA256

            a552cac66a0c3799bc97472ac8629fbe7b4407b0d0779d358d7a486c8caf9e8e

            SHA512

            e629c0ebe65299838c35e2f9111d60d6ef393bd5bf5a9663cc5344798e7a1fdc098c083046309dc3f7ae2149a50f424a10d57e99aca900d41e4235d2bc2bed20

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            3edde722206c469b23bfd632688b5854

            SHA1

            94ff004d85eb32ffa530387cb27c83092d31d840

            SHA256

            a552cac66a0c3799bc97472ac8629fbe7b4407b0d0779d358d7a486c8caf9e8e

            SHA512

            e629c0ebe65299838c35e2f9111d60d6ef393bd5bf5a9663cc5344798e7a1fdc098c083046309dc3f7ae2149a50f424a10d57e99aca900d41e4235d2bc2bed20

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            3edde722206c469b23bfd632688b5854

            SHA1

            94ff004d85eb32ffa530387cb27c83092d31d840

            SHA256

            a552cac66a0c3799bc97472ac8629fbe7b4407b0d0779d358d7a486c8caf9e8e

            SHA512

            e629c0ebe65299838c35e2f9111d60d6ef393bd5bf5a9663cc5344798e7a1fdc098c083046309dc3f7ae2149a50f424a10d57e99aca900d41e4235d2bc2bed20

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b2bf879e403f31f0b09a9fae3b7e2d15

            SHA1

            30d0c2353661a8fab3e81a4c5a8776ecac31eb07

            SHA256

            2b252306981cb94c8688eb6f02601507d05e8f1e496cd63bfcefe07344d3e896

            SHA512

            8d951402ca6aa31573ec0d13ba4ccc32af489898b3d2817736d9166a077e229497452e8fd544df7eba695563e5aa395669c9f8ff40153eb3bee7334ea1d860ca

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b2bf879e403f31f0b09a9fae3b7e2d15

            SHA1

            30d0c2353661a8fab3e81a4c5a8776ecac31eb07

            SHA256

            2b252306981cb94c8688eb6f02601507d05e8f1e496cd63bfcefe07344d3e896

            SHA512

            8d951402ca6aa31573ec0d13ba4ccc32af489898b3d2817736d9166a077e229497452e8fd544df7eba695563e5aa395669c9f8ff40153eb3bee7334ea1d860ca

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            a8f641819e94b3ee4bad8d7537ee65b8

            SHA1

            e1f3ea0be10df2e801ec681204dd1300eaa91f6b

            SHA256

            7cf2a329c890f53fc916e6710559d0d395b6223f0b9f8e45d553f950527572dc

            SHA512

            02b498403c2ea1e009a5081e7a7fa50ecd0e6ac5d1fa6b7cb2585d2224b957ebd504130522fc91bd0f25cc8e2e2bf481e325ad821940575bf8125eb13dafff90

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            12961ad8a354eb25634b970a4397f94d

            SHA1

            5e0a473eba52419452b19d392687811b250fd62e

            SHA256

            13dea89608555e419f0441dde40c2eb588a505f45d04e6e792bd9d68433752a1

            SHA512

            61e9fc27ede3b05255dd3fe0d7bf551d0167548ca642c11504599e1720a08f54b66c4a630c1a9c97a8930a9d2df758abdbfd834410159046ad48240edb839dc4

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            fcba2ebce550b48409c179e579aa54b4

            SHA1

            ed010cb895f7561b81e261676bade732bfd7ca18

            SHA256

            2645803f6a08cdfe2eb5cef581b343c969938d9be3230eb7ebdb0d0fb74af98e

            SHA512

            5894c7e44ff9551f90f02e892bea2a097624407d2844790d0bef8484d4596b50847871493b079753bb30e658d9a9bcad5ea60e51adfa1a63d2be60dbbe277c89

          • memory/612-58-0x0000000000000000-mapping.dmp
          • memory/632-61-0x0000000000000000-mapping.dmp
          • memory/732-63-0x0000000000000000-mapping.dmp
          • memory/796-69-0x0000000000000000-mapping.dmp
          • memory/1344-54-0x0000000075B61000-0x0000000075B63000-memory.dmp
            Filesize

            8KB

          • memory/1504-85-0x0000000000000000-mapping.dmp
          • memory/1620-57-0x0000000000000000-mapping.dmp
          • memory/1660-75-0x0000000000000000-mapping.dmp
          • memory/1672-60-0x0000000000000000-mapping.dmp
          • memory/1684-86-0x0000000000000000-mapping.dmp
          • memory/1832-79-0x0000000000000000-mapping.dmp
          • memory/2040-80-0x0000000000000000-mapping.dmp