Analysis

  • max time kernel
    148s
  • max time network
    155s
  • 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 10:26

General

  • Target

    4d9c6950b4c5b2adba29399d79a55ac3062f7725eacb02b575b3c4a564f7652f.exe

  • Size

    603KB

  • MD5

    da1914a6c79c46e71689deed354f14eb

  • SHA1

    f9c3e42539761b55865113cac55222a86de80f1d

  • SHA256

    4d9c6950b4c5b2adba29399d79a55ac3062f7725eacb02b575b3c4a564f7652f

  • SHA512

    63402672deb7956e19fdc674afdbc8dbca5a626236c8402b3e569edc381975c386663af72a302bada85dc7846a615e5dd60176a41a7fba76370103ac7295d9ee

  • SSDEEP

    12288:1Iny5DYTmI2Ule9MHJ9LQwySHtP4QKKWaCTGDV824bNhkXho/:BUTmNUle8LQncPWU82SNh6C

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\4d9c6950b4c5b2adba29399d79a55ac3062f7725eacb02b575b3c4a564f7652f.exe
    "C:\Users\Admin\AppData\Local\Temp\4d9c6950b4c5b2adba29399d79a55ac3062f7725eacb02b575b3c4a564f7652f.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:4412
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1736
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3604
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2456
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5108
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1436
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4352
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3404
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4728
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3504
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:5036
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3264
          • 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:2248
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3740

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA47.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            02a6ef3bb216f221a50545c6cf94767a

            SHA1

            dc16c5f38d6ec017ac2681e1da82df9028a3f045

            SHA256

            8cdf658761538201cae209390f5709e6efeb0414a71ba705457e97acd186409f

            SHA512

            592a3aa9b27d1bd94df766a4a46027a36c4b24a7e7363e206fb237ff376d551ab3388a0903769ff451e4049434960762d98f1db805ef59d515c012f47fa1008d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            02a6ef3bb216f221a50545c6cf94767a

            SHA1

            dc16c5f38d6ec017ac2681e1da82df9028a3f045

            SHA256

            8cdf658761538201cae209390f5709e6efeb0414a71ba705457e97acd186409f

            SHA512

            592a3aa9b27d1bd94df766a4a46027a36c4b24a7e7363e206fb237ff376d551ab3388a0903769ff451e4049434960762d98f1db805ef59d515c012f47fa1008d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            02a6ef3bb216f221a50545c6cf94767a

            SHA1

            dc16c5f38d6ec017ac2681e1da82df9028a3f045

            SHA256

            8cdf658761538201cae209390f5709e6efeb0414a71ba705457e97acd186409f

            SHA512

            592a3aa9b27d1bd94df766a4a46027a36c4b24a7e7363e206fb237ff376d551ab3388a0903769ff451e4049434960762d98f1db805ef59d515c012f47fa1008d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            02a6ef3bb216f221a50545c6cf94767a

            SHA1

            dc16c5f38d6ec017ac2681e1da82df9028a3f045

            SHA256

            8cdf658761538201cae209390f5709e6efeb0414a71ba705457e97acd186409f

            SHA512

            592a3aa9b27d1bd94df766a4a46027a36c4b24a7e7363e206fb237ff376d551ab3388a0903769ff451e4049434960762d98f1db805ef59d515c012f47fa1008d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            704b0537c0aea78d25c3545657b18e34

            SHA1

            1e45352377b5c47394eaf062e489547dc0417f00

            SHA256

            b8e1978d80f8868ebc973dff5e14d1e8354431a12ab0ff4143477d9aca14849b

            SHA512

            7a559d2bbf8484cd3b5b8c3d6068deeffbe87fd73d996fb4585cd8642b6bd9eb7c667d4aee568c71beaa2741890b8c8124292b1f37331a03da1ef5ed8af222e8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            704b0537c0aea78d25c3545657b18e34

            SHA1

            1e45352377b5c47394eaf062e489547dc0417f00

            SHA256

            b8e1978d80f8868ebc973dff5e14d1e8354431a12ab0ff4143477d9aca14849b

            SHA512

            7a559d2bbf8484cd3b5b8c3d6068deeffbe87fd73d996fb4585cd8642b6bd9eb7c667d4aee568c71beaa2741890b8c8124292b1f37331a03da1ef5ed8af222e8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            704b0537c0aea78d25c3545657b18e34

            SHA1

            1e45352377b5c47394eaf062e489547dc0417f00

            SHA256

            b8e1978d80f8868ebc973dff5e14d1e8354431a12ab0ff4143477d9aca14849b

            SHA512

            7a559d2bbf8484cd3b5b8c3d6068deeffbe87fd73d996fb4585cd8642b6bd9eb7c667d4aee568c71beaa2741890b8c8124292b1f37331a03da1ef5ed8af222e8

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ade38e3439e9a654bbf41694d453990a

            SHA1

            58184b3665958a2aa9f05f16b2857364bb42f34c

            SHA256

            82d3ff2b46e76c2fc7ec61a76e323f294c596b445661be2e443dfb806670fc24

            SHA512

            57bcd58eacc2e39092668af7b93e37a0342c8b408a4117bfbf97fafc2bbd25d44d4f65dbf82fad8590eac736b0538d8d4f981a9b9a649be7a5b94e2716475d01

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ade38e3439e9a654bbf41694d453990a

            SHA1

            58184b3665958a2aa9f05f16b2857364bb42f34c

            SHA256

            82d3ff2b46e76c2fc7ec61a76e323f294c596b445661be2e443dfb806670fc24

            SHA512

            57bcd58eacc2e39092668af7b93e37a0342c8b408a4117bfbf97fafc2bbd25d44d4f65dbf82fad8590eac736b0538d8d4f981a9b9a649be7a5b94e2716475d01

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f38dbd9c359fbcbed89f891ecf242bb

            SHA1

            c4651abed98f7f585c1fb0a59705046a3f7f643a

            SHA256

            76553f326a16581af84668cd43a23dd6f6ddbef8d9467190d0f0ce07611468f7

            SHA512

            86d618b154a556f8ab3484b5cf2337c703d29d8bf9e5428bbac3d7642bb587dd0ce05a5486d0c3f903c215b8802d194f0c6d861968ef91a3b6547c9e8251b4fd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f38dbd9c359fbcbed89f891ecf242bb

            SHA1

            c4651abed98f7f585c1fb0a59705046a3f7f643a

            SHA256

            76553f326a16581af84668cd43a23dd6f6ddbef8d9467190d0f0ce07611468f7

            SHA512

            86d618b154a556f8ab3484b5cf2337c703d29d8bf9e5428bbac3d7642bb587dd0ce05a5486d0c3f903c215b8802d194f0c6d861968ef91a3b6547c9e8251b4fd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f38dbd9c359fbcbed89f891ecf242bb

            SHA1

            c4651abed98f7f585c1fb0a59705046a3f7f643a

            SHA256

            76553f326a16581af84668cd43a23dd6f6ddbef8d9467190d0f0ce07611468f7

            SHA512

            86d618b154a556f8ab3484b5cf2337c703d29d8bf9e5428bbac3d7642bb587dd0ce05a5486d0c3f903c215b8802d194f0c6d861968ef91a3b6547c9e8251b4fd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            77df2e32a507e02e6977ab4a30a0119d

            SHA1

            c1988eb80fc1baea8aa0defdce41e7eebaaa642b

            SHA256

            c7397fa0746c82f4189d6f020b351e049e8098cfadc77a8ff29defeabdced745

            SHA512

            8d1f79b3d2d080950048a901ca2e14361b143d924373db1e2b57863a5ef4fbff21c0cb39979119f938a32623746e9e56d3379a3e35c2a21a7ab486eb7642cf68

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            77df2e32a507e02e6977ab4a30a0119d

            SHA1

            c1988eb80fc1baea8aa0defdce41e7eebaaa642b

            SHA256

            c7397fa0746c82f4189d6f020b351e049e8098cfadc77a8ff29defeabdced745

            SHA512

            8d1f79b3d2d080950048a901ca2e14361b143d924373db1e2b57863a5ef4fbff21c0cb39979119f938a32623746e9e56d3379a3e35c2a21a7ab486eb7642cf68

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            77df2e32a507e02e6977ab4a30a0119d

            SHA1

            c1988eb80fc1baea8aa0defdce41e7eebaaa642b

            SHA256

            c7397fa0746c82f4189d6f020b351e049e8098cfadc77a8ff29defeabdced745

            SHA512

            8d1f79b3d2d080950048a901ca2e14361b143d924373db1e2b57863a5ef4fbff21c0cb39979119f938a32623746e9e56d3379a3e35c2a21a7ab486eb7642cf68

          • memory/1436-142-0x0000000000000000-mapping.dmp

          • memory/1736-136-0x0000000000000000-mapping.dmp

          • memory/2456-140-0x0000000000000000-mapping.dmp

          • memory/3264-166-0x0000000000000000-mapping.dmp

          • memory/3404-153-0x0000000000000000-mapping.dmp

          • memory/3504-159-0x0000000000000000-mapping.dmp

          • memory/3604-137-0x0000000000000000-mapping.dmp

          • memory/4352-147-0x0000000000000000-mapping.dmp

          • memory/4412-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4412-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4728-158-0x0000000000000000-mapping.dmp

          • memory/5036-165-0x0000000000000000-mapping.dmp

          • memory/5108-141-0x0000000000000000-mapping.dmp