Analysis

  • max time kernel
    48s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f70b7df89dc38d8b99ee19e04d41b22efa6d53fc32e1153826b5fdfd21b2988b.exe

  • Size

    602KB

  • MD5

    d6e4c19549062c2930c021d578398a8a

  • SHA1

    d25dedceb66ebc45dd3a7476f9ea2c9ffb5af937

  • SHA256

    f70b7df89dc38d8b99ee19e04d41b22efa6d53fc32e1153826b5fdfd21b2988b

  • SHA512

    6f2d9d146548cdaefb0016af88456ee5ad3fe4c6f51c1ec86c62eb2e7a452baba552f88fbd47fa744a261c6c76ac82042c28f9c0841f395ea5ff4ab94f7d67cc

  • SSDEEP

    12288:OIny5DYTWp/4rVndaCMN6sDJN8BBlheb96G6mRjP37oLvy0ZGm:QUTWNGIFVN87eoG6mRjP3cTP

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\f70b7df89dc38d8b99ee19e04d41b22efa6d53fc32e1153826b5fdfd21b2988b.exe
    "C:\Users\Admin\AppData\Local\Temp\f70b7df89dc38d8b99ee19e04d41b22efa6d53fc32e1153826b5fdfd21b2988b.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:1996
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1644
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:556
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1044
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:268
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1496
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1328
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1768
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:840
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1164
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1008
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:628
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1672
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:964

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            188be6243e28071672a1da6594173817

            SHA1

            4500588b694c66387d949104efa3c122da8be43d

            SHA256

            137334ee8027bcac4023f165e011a44e6d28115e42af855981a5c898f6d23797

            SHA512

            b11bae1e0f6f5fb25ca38ad5f3a70d23ca86f6febdbf5f17585477ce2ff97e80c148802ff9c3389558434447b3d6b785b7200c1f6079548032a6d896cda69aab

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            d1b10e50e1dd70be455b4067591c00b1

            SHA1

            e1a6053611c193a47190e7e396162b82b5264fda

            SHA256

            aef99132793607d405aa698190fadf87af52b75c305b07d1f870dc9440d8e149

            SHA512

            950ff98a75eb5082c161fb5a92a799c8afe94b4d6cd20b3f0f4409a689446dbe4acce7d65cb0de166af630a7e0f4462e9e882ba81e48f74f643123e2e4e11c6e

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            dbe340e810929d112807dbde9c1c532e

            SHA1

            c1bf1bc0e1317a6d9cef47183ee08f0b6a7f38e7

            SHA256

            1401878685bcb11b93b7276a54fa21420d3a55622a7cb5cd5e193611c9c646c8

            SHA512

            2334794f596953427239eed495ff52f5ca56a035dd89e5141030cd24ad948d13e31c701b1e252e9a38ec049ed7b778e5db26728310959795081ebcf4f9ccf927

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            9e2512c87e088258121da558949b38d8

            SHA1

            ff8c1a0a9a6e1bb42d054ce6b38be8187ab2ecb3

            SHA256

            d4f0d908377a3780afbad012538067251835c96dffd6a2b587804c0bd3b1ba58

            SHA512

            75774fe33a9a9b1e2bd7a2fb62e365a3d6107e2a564b9ebbd5c30e99406426998cacf192362f3206fee798107a7df3d9a5cc73eb8936d03e5031e9d1071a629c

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            9e2512c87e088258121da558949b38d8

            SHA1

            ff8c1a0a9a6e1bb42d054ce6b38be8187ab2ecb3

            SHA256

            d4f0d908377a3780afbad012538067251835c96dffd6a2b587804c0bd3b1ba58

            SHA512

            75774fe33a9a9b1e2bd7a2fb62e365a3d6107e2a564b9ebbd5c30e99406426998cacf192362f3206fee798107a7df3d9a5cc73eb8936d03e5031e9d1071a629c

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            d107dd7c95a3e976cb0150305b85d9bd

            SHA1

            4f7e75c1ff9a39ff0dc939c88dfd7c2fb17847f2

            SHA256

            24b911f8c9afa35db31fedccf5156212f8cb7847bcaedc596d559b3d2b8d7fad

            SHA512

            bd4541afea77063285d433b7d10ba331eda9c7cc7631ae0e5bfef0e2c6fca5c3299964ffeafa62155f1fcf9182c7ca4a589107b2250b740eab02314d0318bc4c

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            d107dd7c95a3e976cb0150305b85d9bd

            SHA1

            4f7e75c1ff9a39ff0dc939c88dfd7c2fb17847f2

            SHA256

            24b911f8c9afa35db31fedccf5156212f8cb7847bcaedc596d559b3d2b8d7fad

            SHA512

            bd4541afea77063285d433b7d10ba331eda9c7cc7631ae0e5bfef0e2c6fca5c3299964ffeafa62155f1fcf9182c7ca4a589107b2250b740eab02314d0318bc4c

          • \Users\Admin\AppData\Local\Temp\nstC4F7.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstC4F7.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstC4F7.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstC4F7.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstC4F7.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            188be6243e28071672a1da6594173817

            SHA1

            4500588b694c66387d949104efa3c122da8be43d

            SHA256

            137334ee8027bcac4023f165e011a44e6d28115e42af855981a5c898f6d23797

            SHA512

            b11bae1e0f6f5fb25ca38ad5f3a70d23ca86f6febdbf5f17585477ce2ff97e80c148802ff9c3389558434447b3d6b785b7200c1f6079548032a6d896cda69aab

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            188be6243e28071672a1da6594173817

            SHA1

            4500588b694c66387d949104efa3c122da8be43d

            SHA256

            137334ee8027bcac4023f165e011a44e6d28115e42af855981a5c898f6d23797

            SHA512

            b11bae1e0f6f5fb25ca38ad5f3a70d23ca86f6febdbf5f17585477ce2ff97e80c148802ff9c3389558434447b3d6b785b7200c1f6079548032a6d896cda69aab

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            188be6243e28071672a1da6594173817

            SHA1

            4500588b694c66387d949104efa3c122da8be43d

            SHA256

            137334ee8027bcac4023f165e011a44e6d28115e42af855981a5c898f6d23797

            SHA512

            b11bae1e0f6f5fb25ca38ad5f3a70d23ca86f6febdbf5f17585477ce2ff97e80c148802ff9c3389558434447b3d6b785b7200c1f6079548032a6d896cda69aab

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            d1b10e50e1dd70be455b4067591c00b1

            SHA1

            e1a6053611c193a47190e7e396162b82b5264fda

            SHA256

            aef99132793607d405aa698190fadf87af52b75c305b07d1f870dc9440d8e149

            SHA512

            950ff98a75eb5082c161fb5a92a799c8afe94b4d6cd20b3f0f4409a689446dbe4acce7d65cb0de166af630a7e0f4462e9e882ba81e48f74f643123e2e4e11c6e

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            d1b10e50e1dd70be455b4067591c00b1

            SHA1

            e1a6053611c193a47190e7e396162b82b5264fda

            SHA256

            aef99132793607d405aa698190fadf87af52b75c305b07d1f870dc9440d8e149

            SHA512

            950ff98a75eb5082c161fb5a92a799c8afe94b4d6cd20b3f0f4409a689446dbe4acce7d65cb0de166af630a7e0f4462e9e882ba81e48f74f643123e2e4e11c6e

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            dbe340e810929d112807dbde9c1c532e

            SHA1

            c1bf1bc0e1317a6d9cef47183ee08f0b6a7f38e7

            SHA256

            1401878685bcb11b93b7276a54fa21420d3a55622a7cb5cd5e193611c9c646c8

            SHA512

            2334794f596953427239eed495ff52f5ca56a035dd89e5141030cd24ad948d13e31c701b1e252e9a38ec049ed7b778e5db26728310959795081ebcf4f9ccf927

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            9e2512c87e088258121da558949b38d8

            SHA1

            ff8c1a0a9a6e1bb42d054ce6b38be8187ab2ecb3

            SHA256

            d4f0d908377a3780afbad012538067251835c96dffd6a2b587804c0bd3b1ba58

            SHA512

            75774fe33a9a9b1e2bd7a2fb62e365a3d6107e2a564b9ebbd5c30e99406426998cacf192362f3206fee798107a7df3d9a5cc73eb8936d03e5031e9d1071a629c

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            d107dd7c95a3e976cb0150305b85d9bd

            SHA1

            4f7e75c1ff9a39ff0dc939c88dfd7c2fb17847f2

            SHA256

            24b911f8c9afa35db31fedccf5156212f8cb7847bcaedc596d559b3d2b8d7fad

            SHA512

            bd4541afea77063285d433b7d10ba331eda9c7cc7631ae0e5bfef0e2c6fca5c3299964ffeafa62155f1fcf9182c7ca4a589107b2250b740eab02314d0318bc4c

          • memory/268-61-0x0000000000000000-mapping.dmp
          • memory/556-58-0x0000000000000000-mapping.dmp
          • memory/628-88-0x0000000000000000-mapping.dmp
          • memory/840-81-0x0000000000000000-mapping.dmp
          • memory/1008-87-0x0000000000000000-mapping.dmp
          • memory/1044-60-0x0000000000000000-mapping.dmp
          • memory/1164-82-0x0000000000000000-mapping.dmp
          • memory/1328-71-0x0000000000000000-mapping.dmp
          • memory/1496-65-0x0000000000000000-mapping.dmp
          • memory/1644-57-0x0000000000000000-mapping.dmp
          • memory/1768-77-0x0000000000000000-mapping.dmp
          • memory/1996-63-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1996-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1996-54-0x0000000075D61000-0x0000000075D63000-memory.dmp
            Filesize

            8KB

          • memory/1996-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB