Analysis

  • max time kernel
    22s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    ab7f04302b20217418f6c4780161bd06a7e4376f5903edb46487823c3b0aea11.exe

  • Size

    602KB

  • MD5

    83552a277e7339b1d3b475e55448fadb

  • SHA1

    dcc2e28910496387eec41bb216d906eedef9fa6f

  • SHA256

    ab7f04302b20217418f6c4780161bd06a7e4376f5903edb46487823c3b0aea11

  • SHA512

    d094e44d426de6755525efe361c643715a660fbd3411c488dea08e534149a68e248e026f284ec3169cf6d017ac0a72e703c1148e373c6de348594cd67c76e731

  • SSDEEP

    12288:RIny5DYTgKTneaiFQlSjU5FTVY7txWO4QkIcFsD:tUTgeea986Fu7D4QeCD

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\ab7f04302b20217418f6c4780161bd06a7e4376f5903edb46487823c3b0aea11.exe
    "C:\Users\Admin\AppData\Local\Temp\ab7f04302b20217418f6c4780161bd06a7e4376f5903edb46487823c3b0aea11.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:860
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1284
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1828
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2032
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:288
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1172
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1624
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1156
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1744
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1736
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1608
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1772
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1420

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            897c2d6026046da15b145308b8d49b11

            SHA1

            4f065a4959c14869074fdc21e29e509d5314089d

            SHA256

            c264f87a63e69dba3a79aea78e1b7b121977df1ea88a57269e58449638e65ca6

            SHA512

            4e055f28117f78de909ba1e83125bbd08a885ddb985867d9fa5b154a4e4d054ab3d6bbe55a16f016e8f0e4e13de94b22c4829355e00460f587c4227c405f8449

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b01cd365e30232c46e339dc3dda43bca

            SHA1

            bd8fdf2f7911cd4ad36d707aff5c73b20edf6931

            SHA256

            d1b3d1fc04bd4b6fe9f482c4896819881682e0cc7ff03f609c524bfdc0ea684b

            SHA512

            1324eb17547c624dc2a34084bc7fa8fbe02e4e6fca809294e0bb6f58106f2ff01555a18bd2be6e4460579e95447549425393f712258e8456194fcd285f57a719

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3dce1caf75cfb89addd708983662fd01

            SHA1

            5d6bade3a00aae5142c6bfb5148bdfa8bbe3ffea

            SHA256

            fec2987760a9da1639708cb6e1385a0e7865a07c85ac471afdff17325a4a8fa6

            SHA512

            721a015e0c28d790c337a999ef7a686f0fce7b56715e9a0c59eb9a20fda512364989aef08df3335a83e2276a1ef9c9497717df8b60ba35b8d2771704e839c34e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            eedb9210bd9e3225c8c4b36a1b51b420

            SHA1

            e3a4d20dbdfd1399072b0dd976c3d848e6dd8a43

            SHA256

            e4b82c972cc65a3b154c22846f204eb63cdea0ccb6a805e882316bcdd76682e4

            SHA512

            9bf1d3b2d319bbbe13b63f116a8c0dbd289f04844f9dbc99a73fda007bdcedc84a24b62bee6afa214c17f6c0baec6ec513f036f6deafa6cc735895a156ff8372

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            eedb9210bd9e3225c8c4b36a1b51b420

            SHA1

            e3a4d20dbdfd1399072b0dd976c3d848e6dd8a43

            SHA256

            e4b82c972cc65a3b154c22846f204eb63cdea0ccb6a805e882316bcdd76682e4

            SHA512

            9bf1d3b2d319bbbe13b63f116a8c0dbd289f04844f9dbc99a73fda007bdcedc84a24b62bee6afa214c17f6c0baec6ec513f036f6deafa6cc735895a156ff8372

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            bc4982a42a5581db5f137758f16546a3

            SHA1

            6cf2067f4b5c480ac3e06e53d486b7584944c7c2

            SHA256

            77b32f076945c5b4b0ae0ce61c147421a4e9892a430f07206a21239663842f29

            SHA512

            1e9a00b5e178a04b2378828bf18be9f44c36b5f472a7a96a8de44e6a05db87a10005dc1672538d7acfc02bcb9615692c5514343b1c8545237bc6dccca67401be

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            bc4982a42a5581db5f137758f16546a3

            SHA1

            6cf2067f4b5c480ac3e06e53d486b7584944c7c2

            SHA256

            77b32f076945c5b4b0ae0ce61c147421a4e9892a430f07206a21239663842f29

            SHA512

            1e9a00b5e178a04b2378828bf18be9f44c36b5f472a7a96a8de44e6a05db87a10005dc1672538d7acfc02bcb9615692c5514343b1c8545237bc6dccca67401be

          • \Users\Admin\AppData\Local\Temp\nst82D9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst82D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst82D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst82D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst82D9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            897c2d6026046da15b145308b8d49b11

            SHA1

            4f065a4959c14869074fdc21e29e509d5314089d

            SHA256

            c264f87a63e69dba3a79aea78e1b7b121977df1ea88a57269e58449638e65ca6

            SHA512

            4e055f28117f78de909ba1e83125bbd08a885ddb985867d9fa5b154a4e4d054ab3d6bbe55a16f016e8f0e4e13de94b22c4829355e00460f587c4227c405f8449

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            897c2d6026046da15b145308b8d49b11

            SHA1

            4f065a4959c14869074fdc21e29e509d5314089d

            SHA256

            c264f87a63e69dba3a79aea78e1b7b121977df1ea88a57269e58449638e65ca6

            SHA512

            4e055f28117f78de909ba1e83125bbd08a885ddb985867d9fa5b154a4e4d054ab3d6bbe55a16f016e8f0e4e13de94b22c4829355e00460f587c4227c405f8449

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            897c2d6026046da15b145308b8d49b11

            SHA1

            4f065a4959c14869074fdc21e29e509d5314089d

            SHA256

            c264f87a63e69dba3a79aea78e1b7b121977df1ea88a57269e58449638e65ca6

            SHA512

            4e055f28117f78de909ba1e83125bbd08a885ddb985867d9fa5b154a4e4d054ab3d6bbe55a16f016e8f0e4e13de94b22c4829355e00460f587c4227c405f8449

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b01cd365e30232c46e339dc3dda43bca

            SHA1

            bd8fdf2f7911cd4ad36d707aff5c73b20edf6931

            SHA256

            d1b3d1fc04bd4b6fe9f482c4896819881682e0cc7ff03f609c524bfdc0ea684b

            SHA512

            1324eb17547c624dc2a34084bc7fa8fbe02e4e6fca809294e0bb6f58106f2ff01555a18bd2be6e4460579e95447549425393f712258e8456194fcd285f57a719

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b01cd365e30232c46e339dc3dda43bca

            SHA1

            bd8fdf2f7911cd4ad36d707aff5c73b20edf6931

            SHA256

            d1b3d1fc04bd4b6fe9f482c4896819881682e0cc7ff03f609c524bfdc0ea684b

            SHA512

            1324eb17547c624dc2a34084bc7fa8fbe02e4e6fca809294e0bb6f58106f2ff01555a18bd2be6e4460579e95447549425393f712258e8456194fcd285f57a719

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3dce1caf75cfb89addd708983662fd01

            SHA1

            5d6bade3a00aae5142c6bfb5148bdfa8bbe3ffea

            SHA256

            fec2987760a9da1639708cb6e1385a0e7865a07c85ac471afdff17325a4a8fa6

            SHA512

            721a015e0c28d790c337a999ef7a686f0fce7b56715e9a0c59eb9a20fda512364989aef08df3335a83e2276a1ef9c9497717df8b60ba35b8d2771704e839c34e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            eedb9210bd9e3225c8c4b36a1b51b420

            SHA1

            e3a4d20dbdfd1399072b0dd976c3d848e6dd8a43

            SHA256

            e4b82c972cc65a3b154c22846f204eb63cdea0ccb6a805e882316bcdd76682e4

            SHA512

            9bf1d3b2d319bbbe13b63f116a8c0dbd289f04844f9dbc99a73fda007bdcedc84a24b62bee6afa214c17f6c0baec6ec513f036f6deafa6cc735895a156ff8372

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            bc4982a42a5581db5f137758f16546a3

            SHA1

            6cf2067f4b5c480ac3e06e53d486b7584944c7c2

            SHA256

            77b32f076945c5b4b0ae0ce61c147421a4e9892a430f07206a21239663842f29

            SHA512

            1e9a00b5e178a04b2378828bf18be9f44c36b5f472a7a96a8de44e6a05db87a10005dc1672538d7acfc02bcb9615692c5514343b1c8545237bc6dccca67401be

          • memory/288-64-0x0000000000000000-mapping.dmp

          • memory/860-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/860-54-0x0000000075071000-0x0000000075073000-memory.dmp

            Filesize

            8KB

          • memory/860-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1156-80-0x0000000000000000-mapping.dmp

          • memory/1172-70-0x0000000000000000-mapping.dmp

          • memory/1284-58-0x0000000000000000-mapping.dmp

          • memory/1608-87-0x0000000000000000-mapping.dmp

          • memory/1624-76-0x0000000000000000-mapping.dmp

          • memory/1736-86-0x0000000000000000-mapping.dmp

          • memory/1744-81-0x0000000000000000-mapping.dmp

          • memory/1828-60-0x0000000000000000-mapping.dmp

          • memory/2028-57-0x0000000000000000-mapping.dmp

          • memory/2032-61-0x0000000000000000-mapping.dmp