Analysis

  • max time kernel
    102s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:34

General

  • Target

    0c8b0e403562f99f87e33111801b8f54828e8a35b4d82d06e0aa3df969169d35.exe

  • Size

    603KB

  • MD5

    8f3b97b29093a8a1d16ad75d32c069d8

  • SHA1

    8ef20c9027db7e2e4f39faa600a5d1e18515789d

  • SHA256

    0c8b0e403562f99f87e33111801b8f54828e8a35b4d82d06e0aa3df969169d35

  • SHA512

    36dabe045de68db3a02cbfd9255d4eb375fbfac119506ea90a51fffd97d998b8b4e0568a22d659458cd45fddf8cca5f9138bdd4883dce6dd9173d5a791f30159

  • SSDEEP

    12288:BIny5DYTMI3vKSXjXcgn+89ZNUyryx7SLa2zFf9Cj5jR9mUWV:9UTMUvKSzMGLzUyryKnzF8j59AUW

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\0c8b0e403562f99f87e33111801b8f54828e8a35b4d82d06e0aa3df969169d35.exe
    "C:\Users\Admin\AppData\Local\Temp\0c8b0e403562f99f87e33111801b8f54828e8a35b4d82d06e0aa3df969169d35.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:1544
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1040
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:576
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1160
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1652
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1628
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:812
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:824
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1540
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:832
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1936
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:896
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:552
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1728

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            20f335d65b89b0961a993753b647a171

            SHA1

            3181b33f820167058c89635b88cd048544b72bd6

            SHA256

            9e5f75b416120d624964d3ae201204496ac92bb4a39047f23a1d295e6bd5489f

            SHA512

            c5a45dc0e6b3d7866a108f5b383852c4d9adfb95d8912de96efa482537a8dcb0300145e6ee4da6150fbbedd37ef4232e72ad1a5838c866f7533ec90291021e7c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e6e7b3554b2f9b119fe6bf72955ab492

            SHA1

            e37fc86bb9667f06108a256ca2d3b9ad21bb7ee3

            SHA256

            2d107bb896196bbc29c7ddb7cdef5202076bfae789d6b8cd3c7c11cb5c9497e7

            SHA512

            8b3ab544dc1fc2bdb7353fea88a9a9b8016dd99ea4bdd9c418d8b8db61dd36513693cd0d6a430fc890a6b0ad47bcdd584935c36dc9ef2099d4008696023e86bd

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            757f11e1becc15bc1dff4712fb6b4db7

            SHA1

            508df367a2f255c8080414c809767acc989218fb

            SHA256

            074058be174f5ba3d0157a824b60ba9b481467f56bd4af36305df67580b70345

            SHA512

            1ffe06085d79a5e5dfbd2e9ef06df40faf0d52c9a3b7583193cc07913869fb0ff81f68b6c19ab1b4747b19ca7229d96796cbdad4cf16b2dab5da7315876bb269

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            20b669742cf66697989b511b218ae47b

            SHA1

            4687b50de37aa35c92564ef5bbceff82a9ab0b7b

            SHA256

            a84f31e5140262ffba41cd8b4cc9aa2761a1f1e1798f07c993d0cb293c51874a

            SHA512

            e11fd4629682f39cc60091ae43b927d5ea838b2a11795208cc1f71f242df1951df6806082df30ae693b1bae88507fe6a7584610e72b118b92b9da929184bf1aa

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            20b669742cf66697989b511b218ae47b

            SHA1

            4687b50de37aa35c92564ef5bbceff82a9ab0b7b

            SHA256

            a84f31e5140262ffba41cd8b4cc9aa2761a1f1e1798f07c993d0cb293c51874a

            SHA512

            e11fd4629682f39cc60091ae43b927d5ea838b2a11795208cc1f71f242df1951df6806082df30ae693b1bae88507fe6a7584610e72b118b92b9da929184bf1aa

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1d88dfbc7ce15627249a5191fdc964f7

            SHA1

            e79dbcc644b85bde26fc03469f726e54c685446d

            SHA256

            e7a0197f106ded476743b7525860bd35944d26447561b44aff3e5cfd749fa1ba

            SHA512

            0940fce57698010d8b23065834da5bfbe781487e829fd089c8b116e4bdd17969edcd67b5b5a476bd9a25fece595acc9b2053030113d71ee0d090111d7de13f7e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1d88dfbc7ce15627249a5191fdc964f7

            SHA1

            e79dbcc644b85bde26fc03469f726e54c685446d

            SHA256

            e7a0197f106ded476743b7525860bd35944d26447561b44aff3e5cfd749fa1ba

            SHA512

            0940fce57698010d8b23065834da5bfbe781487e829fd089c8b116e4bdd17969edcd67b5b5a476bd9a25fece595acc9b2053030113d71ee0d090111d7de13f7e

          • \Users\Admin\AppData\Local\Temp\nso2DA8.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso2DA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso2DA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso2DA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso2DA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            20f335d65b89b0961a993753b647a171

            SHA1

            3181b33f820167058c89635b88cd048544b72bd6

            SHA256

            9e5f75b416120d624964d3ae201204496ac92bb4a39047f23a1d295e6bd5489f

            SHA512

            c5a45dc0e6b3d7866a108f5b383852c4d9adfb95d8912de96efa482537a8dcb0300145e6ee4da6150fbbedd37ef4232e72ad1a5838c866f7533ec90291021e7c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            20f335d65b89b0961a993753b647a171

            SHA1

            3181b33f820167058c89635b88cd048544b72bd6

            SHA256

            9e5f75b416120d624964d3ae201204496ac92bb4a39047f23a1d295e6bd5489f

            SHA512

            c5a45dc0e6b3d7866a108f5b383852c4d9adfb95d8912de96efa482537a8dcb0300145e6ee4da6150fbbedd37ef4232e72ad1a5838c866f7533ec90291021e7c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            20f335d65b89b0961a993753b647a171

            SHA1

            3181b33f820167058c89635b88cd048544b72bd6

            SHA256

            9e5f75b416120d624964d3ae201204496ac92bb4a39047f23a1d295e6bd5489f

            SHA512

            c5a45dc0e6b3d7866a108f5b383852c4d9adfb95d8912de96efa482537a8dcb0300145e6ee4da6150fbbedd37ef4232e72ad1a5838c866f7533ec90291021e7c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e6e7b3554b2f9b119fe6bf72955ab492

            SHA1

            e37fc86bb9667f06108a256ca2d3b9ad21bb7ee3

            SHA256

            2d107bb896196bbc29c7ddb7cdef5202076bfae789d6b8cd3c7c11cb5c9497e7

            SHA512

            8b3ab544dc1fc2bdb7353fea88a9a9b8016dd99ea4bdd9c418d8b8db61dd36513693cd0d6a430fc890a6b0ad47bcdd584935c36dc9ef2099d4008696023e86bd

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e6e7b3554b2f9b119fe6bf72955ab492

            SHA1

            e37fc86bb9667f06108a256ca2d3b9ad21bb7ee3

            SHA256

            2d107bb896196bbc29c7ddb7cdef5202076bfae789d6b8cd3c7c11cb5c9497e7

            SHA512

            8b3ab544dc1fc2bdb7353fea88a9a9b8016dd99ea4bdd9c418d8b8db61dd36513693cd0d6a430fc890a6b0ad47bcdd584935c36dc9ef2099d4008696023e86bd

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            757f11e1becc15bc1dff4712fb6b4db7

            SHA1

            508df367a2f255c8080414c809767acc989218fb

            SHA256

            074058be174f5ba3d0157a824b60ba9b481467f56bd4af36305df67580b70345

            SHA512

            1ffe06085d79a5e5dfbd2e9ef06df40faf0d52c9a3b7583193cc07913869fb0ff81f68b6c19ab1b4747b19ca7229d96796cbdad4cf16b2dab5da7315876bb269

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            20b669742cf66697989b511b218ae47b

            SHA1

            4687b50de37aa35c92564ef5bbceff82a9ab0b7b

            SHA256

            a84f31e5140262ffba41cd8b4cc9aa2761a1f1e1798f07c993d0cb293c51874a

            SHA512

            e11fd4629682f39cc60091ae43b927d5ea838b2a11795208cc1f71f242df1951df6806082df30ae693b1bae88507fe6a7584610e72b118b92b9da929184bf1aa

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1d88dfbc7ce15627249a5191fdc964f7

            SHA1

            e79dbcc644b85bde26fc03469f726e54c685446d

            SHA256

            e7a0197f106ded476743b7525860bd35944d26447561b44aff3e5cfd749fa1ba

            SHA512

            0940fce57698010d8b23065834da5bfbe781487e829fd089c8b116e4bdd17969edcd67b5b5a476bd9a25fece595acc9b2053030113d71ee0d090111d7de13f7e

          • memory/576-59-0x0000000000000000-mapping.dmp

          • memory/812-70-0x0000000000000000-mapping.dmp

          • memory/824-77-0x0000000000000000-mapping.dmp

          • memory/832-82-0x0000000000000000-mapping.dmp

          • memory/896-88-0x0000000000000000-mapping.dmp

          • memory/1040-58-0x0000000000000000-mapping.dmp

          • memory/1160-61-0x0000000000000000-mapping.dmp

          • memory/1540-81-0x0000000000000000-mapping.dmp

          • memory/1544-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1544-54-0x0000000075611000-0x0000000075613000-memory.dmp

            Filesize

            8KB

          • memory/1544-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1544-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1628-64-0x0000000000000000-mapping.dmp

          • memory/1652-62-0x0000000000000000-mapping.dmp

          • memory/1936-87-0x0000000000000000-mapping.dmp