Analysis

  • max time kernel
    139s
  • max time network
    157s
  • 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 10:49

General

  • Target

    f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe

  • Size

    447KB

  • MD5

    3102cf05fd14e432719f8fe240ba8e41

  • SHA1

    93d85cd263fa122cad27a2c126da63072a9422e6

  • SHA256

    f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1

  • SHA512

    a5587a3aab89559efde084b715d9f7050cf111a3d51bde0319517386ac39b9f98ae0c3519b0294f56fd9bfda31920e96629f8b25ad7c09cd2c6e8fd30e9dd9ef

  • SSDEEP

    12288:VKyDSUAySxbmZVBjLt6LNAHoWd6o6dEAbhB3p:V3DqEBjsButAEohT

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\f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe
    "C:\Users\Admin\AppData\Local\Temp\f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.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:808
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3776
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2228
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3028
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1980
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:508
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4724
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4928
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2020
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4632
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:228
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3260
          • 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:4600
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4224

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst91C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a64a469f862eff1d120094ee3bb14078

            SHA1

            cbd37cb89ce58ef7d25719fdd3f30831d393a545

            SHA256

            4d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe

            SHA512

            d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a64a469f862eff1d120094ee3bb14078

            SHA1

            cbd37cb89ce58ef7d25719fdd3f30831d393a545

            SHA256

            4d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe

            SHA512

            d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a64a469f862eff1d120094ee3bb14078

            SHA1

            cbd37cb89ce58ef7d25719fdd3f30831d393a545

            SHA256

            4d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe

            SHA512

            d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a64a469f862eff1d120094ee3bb14078

            SHA1

            cbd37cb89ce58ef7d25719fdd3f30831d393a545

            SHA256

            4d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe

            SHA512

            d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            de784ba59cf5c3a087c59db32839c3a4

            SHA1

            4b0cfb500d9eae9b467a6c3185671bfe73221df4

            SHA256

            c1a24742d38ea000220d5121990008133538978443146220d96769463038e931

            SHA512

            c661b2f19800fc0aaf1bf6eaeee687662044d6cd254736b8e4c7ce9ff6d15befd050d81d0e18ddb40722bb37b85c1073715c9376dc3a74ad686be800d1ebba1d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            de784ba59cf5c3a087c59db32839c3a4

            SHA1

            4b0cfb500d9eae9b467a6c3185671bfe73221df4

            SHA256

            c1a24742d38ea000220d5121990008133538978443146220d96769463038e931

            SHA512

            c661b2f19800fc0aaf1bf6eaeee687662044d6cd254736b8e4c7ce9ff6d15befd050d81d0e18ddb40722bb37b85c1073715c9376dc3a74ad686be800d1ebba1d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            de784ba59cf5c3a087c59db32839c3a4

            SHA1

            4b0cfb500d9eae9b467a6c3185671bfe73221df4

            SHA256

            c1a24742d38ea000220d5121990008133538978443146220d96769463038e931

            SHA512

            c661b2f19800fc0aaf1bf6eaeee687662044d6cd254736b8e4c7ce9ff6d15befd050d81d0e18ddb40722bb37b85c1073715c9376dc3a74ad686be800d1ebba1d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            efd1cf1d709490dbae67b5eb9e26eeed

            SHA1

            6bb6972fb35b7e42af6cbee60d2abc1f855ca422

            SHA256

            5e1afa1eda4a6d541854591691eb6bbeb3fea3bd735baf9d238cbfe934eadba8

            SHA512

            1ea351d88b20c29ad0e742db13e890017462dfa3842b3e5d2882b11e85ae6d08283315bb461537c260d79febc955745adbdc618160ccb18f7897c417e1c7d7b9

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            efd1cf1d709490dbae67b5eb9e26eeed

            SHA1

            6bb6972fb35b7e42af6cbee60d2abc1f855ca422

            SHA256

            5e1afa1eda4a6d541854591691eb6bbeb3fea3bd735baf9d238cbfe934eadba8

            SHA512

            1ea351d88b20c29ad0e742db13e890017462dfa3842b3e5d2882b11e85ae6d08283315bb461537c260d79febc955745adbdc618160ccb18f7897c417e1c7d7b9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            562cef5f0926cb7679eb921875a63cd3

            SHA1

            90a6bfc90fd80db76bb2a80a3d4cb0c9ad485368

            SHA256

            fcee6989e0c72f938b59d30b55c7f88fd786368907251f821bb76588ebee1ee5

            SHA512

            86d8705f799177622d544857e68d3e15d0657f860c8da2956113b21834dec45740cc17c72afcd100b5d9fc67bfd4e3f94c418d175d832717d30f2474bbe979a1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            562cef5f0926cb7679eb921875a63cd3

            SHA1

            90a6bfc90fd80db76bb2a80a3d4cb0c9ad485368

            SHA256

            fcee6989e0c72f938b59d30b55c7f88fd786368907251f821bb76588ebee1ee5

            SHA512

            86d8705f799177622d544857e68d3e15d0657f860c8da2956113b21834dec45740cc17c72afcd100b5d9fc67bfd4e3f94c418d175d832717d30f2474bbe979a1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            562cef5f0926cb7679eb921875a63cd3

            SHA1

            90a6bfc90fd80db76bb2a80a3d4cb0c9ad485368

            SHA256

            fcee6989e0c72f938b59d30b55c7f88fd786368907251f821bb76588ebee1ee5

            SHA512

            86d8705f799177622d544857e68d3e15d0657f860c8da2956113b21834dec45740cc17c72afcd100b5d9fc67bfd4e3f94c418d175d832717d30f2474bbe979a1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5b9713bc6caba9cc624402660832d676

            SHA1

            b4b336cd59cac20fe4265d55a2c8da033dc4ac6d

            SHA256

            215d4886e84426be5989e1bdcce54c57f9facdae643edead85c3ab21a48b867a

            SHA512

            219361b7d132aacae58a5de58977c86ba10a029c3cd7ce24845dae6b5091c339a4d28677d8043cdeec38f4900accaebd8f844f4c31a42a9a305108497ffd70ce

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5b9713bc6caba9cc624402660832d676

            SHA1

            b4b336cd59cac20fe4265d55a2c8da033dc4ac6d

            SHA256

            215d4886e84426be5989e1bdcce54c57f9facdae643edead85c3ab21a48b867a

            SHA512

            219361b7d132aacae58a5de58977c86ba10a029c3cd7ce24845dae6b5091c339a4d28677d8043cdeec38f4900accaebd8f844f4c31a42a9a305108497ffd70ce

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5b9713bc6caba9cc624402660832d676

            SHA1

            b4b336cd59cac20fe4265d55a2c8da033dc4ac6d

            SHA256

            215d4886e84426be5989e1bdcce54c57f9facdae643edead85c3ab21a48b867a

            SHA512

            219361b7d132aacae58a5de58977c86ba10a029c3cd7ce24845dae6b5091c339a4d28677d8043cdeec38f4900accaebd8f844f4c31a42a9a305108497ffd70ce

          • memory/228-164-0x0000000000000000-mapping.dmp

          • memory/508-141-0x0000000000000000-mapping.dmp

          • memory/1980-140-0x0000000000000000-mapping.dmp

          • memory/2020-157-0x0000000000000000-mapping.dmp

          • memory/2228-136-0x0000000000000000-mapping.dmp

          • memory/3028-139-0x0000000000000000-mapping.dmp

          • memory/3260-165-0x0000000000000000-mapping.dmp

          • memory/3776-135-0x0000000000000000-mapping.dmp

          • memory/4632-158-0x0000000000000000-mapping.dmp

          • memory/4724-146-0x0000000000000000-mapping.dmp

          • memory/4928-152-0x0000000000000000-mapping.dmp