Analysis

  • max time kernel
    62s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    fd42e31180c40693aac7dea7d5ab693b802da47fb3b60e9e66faef2c09e53dc7.exe

  • Size

    602KB

  • MD5

    3c3553d2fa91a9144c79bc977c584813

  • SHA1

    57356fc6d089aae7b0a1feb36d01e4ce68c4e703

  • SHA256

    fd42e31180c40693aac7dea7d5ab693b802da47fb3b60e9e66faef2c09e53dc7

  • SHA512

    49766d04b17551f2fc685116ba3163adc77e991c9f9ac632631f99f309f83c0a18594fbc1097f3e11c2bf592c8f438876135c7eb8a52ec99ace5ae452e80ac52

  • SSDEEP

    12288:JIny5DYTW/KR7pI52SVCeNn939nUnN4NFKmyGbNDtXMCQX5DZ3f:lUTW/KDI5fVNN935UnoFt8CQXz3

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\fd42e31180c40693aac7dea7d5ab693b802da47fb3b60e9e66faef2c09e53dc7.exe
    "C:\Users\Admin\AppData\Local\Temp\fd42e31180c40693aac7dea7d5ab693b802da47fb3b60e9e66faef2c09e53dc7.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:1704
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:828
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:872
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:648
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1500
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:520
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1088
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1424
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:816
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:280
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1268
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1656
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:956
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1720

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            afb5f953a7baa129f1ee8f1ab6cbfec0

            SHA1

            b34688eb5b06f7a7c42578478369a9df88618bb1

            SHA256

            936d319ed6f5a87f4fa7069f161a15ade894f1b0faedd59542b8ce148deec776

            SHA512

            3cc12387d89f4246b722a3db96ab15c3056330a2c11e7f452dcc7c1bbd701bbc7ee93b4cdf401ac559348da7b58d7df792b9776759c5917b7f734499362f0a09

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ea5936069bc6de66489b61fb6976d304

            SHA1

            c5f563b502c2282af5b0beac6d6b5b2ef17d66d4

            SHA256

            5343fcf55bd445a107e9f459e78678fbe82e46a107cfcb3f9e762d005a55b83b

            SHA512

            1992bfea25a688b7e736cb04f7a7023a670af44f899bc4568dcc824c9ff5e4d578285ed8de05f49d51cc4ecbc0e6a88a56d21b3003c73094182b6567a2d88331

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b13d5bc29e053575dfd8345d70ac12cb

            SHA1

            4ca07b74eaab0d88cba7bb81fa4a9b51c59c6da7

            SHA256

            48a06d72bf1151f912f73515283386510ef19c3e8b9e05c3e5e67b6e7beb7d6c

            SHA512

            a98663b551439c3991affc3fbe3a8a28400ef234e7b5ff00f375ad89b9e45756647f978064bd2d2e7c06ba08db08940ca785b4db8b24be89fea550336ffe6116

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            540da2991c179c381b07f317545ee01a

            SHA1

            fc37cddf122223ae823134a4f526853bc52d6c59

            SHA256

            02398d639197595b2f2c246aeac98f951cd29c86d44fff017c52ef87baaf946a

            SHA512

            3261317f8dfd5e23db526fdd4810d3e495c6af09d05b6bd636c0cba38fa5432b58c36a4bf31d5af79abc49950401ad7d62ef02f7808d4cdcb4e6c72eea57755f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            540da2991c179c381b07f317545ee01a

            SHA1

            fc37cddf122223ae823134a4f526853bc52d6c59

            SHA256

            02398d639197595b2f2c246aeac98f951cd29c86d44fff017c52ef87baaf946a

            SHA512

            3261317f8dfd5e23db526fdd4810d3e495c6af09d05b6bd636c0cba38fa5432b58c36a4bf31d5af79abc49950401ad7d62ef02f7808d4cdcb4e6c72eea57755f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            14cc8c59307b067f0074091bd01ae9b8

            SHA1

            4f470b8abb61ed18df76cd6fcadd8b4d66f1baaf

            SHA256

            e9bf1a952d36301b8a6fca395829cdcd282cfd64663576fcdb13e993b67cb268

            SHA512

            12b01c5cdad8656c73047f87dfcf53dbbcd34acf1d558d849d282e18117fc61c6ff06c39b48e1c25c1439b859b96635759844882bec8d20a9c85e24bdd8c5bc7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            14cc8c59307b067f0074091bd01ae9b8

            SHA1

            4f470b8abb61ed18df76cd6fcadd8b4d66f1baaf

            SHA256

            e9bf1a952d36301b8a6fca395829cdcd282cfd64663576fcdb13e993b67cb268

            SHA512

            12b01c5cdad8656c73047f87dfcf53dbbcd34acf1d558d849d282e18117fc61c6ff06c39b48e1c25c1439b859b96635759844882bec8d20a9c85e24bdd8c5bc7

          • \Users\Admin\AppData\Local\Temp\nstE063.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstE063.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE063.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE063.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstE063.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            afb5f953a7baa129f1ee8f1ab6cbfec0

            SHA1

            b34688eb5b06f7a7c42578478369a9df88618bb1

            SHA256

            936d319ed6f5a87f4fa7069f161a15ade894f1b0faedd59542b8ce148deec776

            SHA512

            3cc12387d89f4246b722a3db96ab15c3056330a2c11e7f452dcc7c1bbd701bbc7ee93b4cdf401ac559348da7b58d7df792b9776759c5917b7f734499362f0a09

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            afb5f953a7baa129f1ee8f1ab6cbfec0

            SHA1

            b34688eb5b06f7a7c42578478369a9df88618bb1

            SHA256

            936d319ed6f5a87f4fa7069f161a15ade894f1b0faedd59542b8ce148deec776

            SHA512

            3cc12387d89f4246b722a3db96ab15c3056330a2c11e7f452dcc7c1bbd701bbc7ee93b4cdf401ac559348da7b58d7df792b9776759c5917b7f734499362f0a09

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            afb5f953a7baa129f1ee8f1ab6cbfec0

            SHA1

            b34688eb5b06f7a7c42578478369a9df88618bb1

            SHA256

            936d319ed6f5a87f4fa7069f161a15ade894f1b0faedd59542b8ce148deec776

            SHA512

            3cc12387d89f4246b722a3db96ab15c3056330a2c11e7f452dcc7c1bbd701bbc7ee93b4cdf401ac559348da7b58d7df792b9776759c5917b7f734499362f0a09

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ea5936069bc6de66489b61fb6976d304

            SHA1

            c5f563b502c2282af5b0beac6d6b5b2ef17d66d4

            SHA256

            5343fcf55bd445a107e9f459e78678fbe82e46a107cfcb3f9e762d005a55b83b

            SHA512

            1992bfea25a688b7e736cb04f7a7023a670af44f899bc4568dcc824c9ff5e4d578285ed8de05f49d51cc4ecbc0e6a88a56d21b3003c73094182b6567a2d88331

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ea5936069bc6de66489b61fb6976d304

            SHA1

            c5f563b502c2282af5b0beac6d6b5b2ef17d66d4

            SHA256

            5343fcf55bd445a107e9f459e78678fbe82e46a107cfcb3f9e762d005a55b83b

            SHA512

            1992bfea25a688b7e736cb04f7a7023a670af44f899bc4568dcc824c9ff5e4d578285ed8de05f49d51cc4ecbc0e6a88a56d21b3003c73094182b6567a2d88331

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b13d5bc29e053575dfd8345d70ac12cb

            SHA1

            4ca07b74eaab0d88cba7bb81fa4a9b51c59c6da7

            SHA256

            48a06d72bf1151f912f73515283386510ef19c3e8b9e05c3e5e67b6e7beb7d6c

            SHA512

            a98663b551439c3991affc3fbe3a8a28400ef234e7b5ff00f375ad89b9e45756647f978064bd2d2e7c06ba08db08940ca785b4db8b24be89fea550336ffe6116

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            540da2991c179c381b07f317545ee01a

            SHA1

            fc37cddf122223ae823134a4f526853bc52d6c59

            SHA256

            02398d639197595b2f2c246aeac98f951cd29c86d44fff017c52ef87baaf946a

            SHA512

            3261317f8dfd5e23db526fdd4810d3e495c6af09d05b6bd636c0cba38fa5432b58c36a4bf31d5af79abc49950401ad7d62ef02f7808d4cdcb4e6c72eea57755f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            14cc8c59307b067f0074091bd01ae9b8

            SHA1

            4f470b8abb61ed18df76cd6fcadd8b4d66f1baaf

            SHA256

            e9bf1a952d36301b8a6fca395829cdcd282cfd64663576fcdb13e993b67cb268

            SHA512

            12b01c5cdad8656c73047f87dfcf53dbbcd34acf1d558d849d282e18117fc61c6ff06c39b48e1c25c1439b859b96635759844882bec8d20a9c85e24bdd8c5bc7

          • memory/280-81-0x0000000000000000-mapping.dmp

          • memory/520-64-0x0000000000000000-mapping.dmp

          • memory/648-60-0x0000000000000000-mapping.dmp

          • memory/816-80-0x0000000000000000-mapping.dmp

          • memory/828-57-0x0000000000000000-mapping.dmp

          • memory/872-58-0x0000000000000000-mapping.dmp

          • memory/1088-70-0x0000000000000000-mapping.dmp

          • memory/1268-86-0x0000000000000000-mapping.dmp

          • memory/1424-76-0x0000000000000000-mapping.dmp

          • memory/1500-61-0x0000000000000000-mapping.dmp

          • memory/1656-87-0x0000000000000000-mapping.dmp

          • memory/1704-54-0x0000000075591000-0x0000000075593000-memory.dmp

            Filesize

            8KB

          • memory/1704-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1704-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB