Analysis

  • max time kernel
    41s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 05:40

General

  • Target

    5736cebf874914caba4812d618bc8562f171fa1dc39b7ecee69fe6631a5809e6.exe

  • Size

    601KB

  • MD5

    2475addba1eda6b3cdbe84c126434e32

  • SHA1

    89c030db9d40db218ad2a81e1e00229b947fbfc4

  • SHA256

    5736cebf874914caba4812d618bc8562f171fa1dc39b7ecee69fe6631a5809e6

  • SHA512

    8f2c61d5e799ecda6387c1d9c019400e51dfba43700e539a9cc642af0eb4e8d8e31d295c1a4a7dcf4e847ccf5df34c93cfad61abeebde6cb4c354afd69ac1724

  • SSDEEP

    12288:NIny5DYTg56xU0K2/20VatfdS0Z+3pOS/zB8jOmJqv3gxqM9zCX7gia2c:ZUTg56/H/20iLZ+3Yp5Jqv3gxH9zCX7/

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\5736cebf874914caba4812d618bc8562f171fa1dc39b7ecee69fe6631a5809e6.exe
    "C:\Users\Admin\AppData\Local\Temp\5736cebf874914caba4812d618bc8562f171fa1dc39b7ecee69fe6631a5809e6.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:2044
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1784
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1656
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1800
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1608
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1796
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1560
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1156
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:668
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:960
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1928
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1876

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            47500f8467335a6a1a2096ee957da50e

            SHA1

            a1416d8229f3e4a82c567f7096dc35abac7b680d

            SHA256

            b29133c43a5a1e6a825cb3763c9e6a1fac43e445b4ca01019244ead05cdf9dfb

            SHA512

            3d3f47d892a95cd784cc436c1f6d17fb0b1caf240bd2efb7f1ac1757c97201e8c6279e46e782910846f6af5726df3eb94d17c49064c9c940d5b8d06660838ec0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5b2bdab58a5e5184a049d8c34fc26fce

            SHA1

            515fb05c8cf8ee2ecb666be9e57cf2efc60e5b23

            SHA256

            e19298b94364fabdc48cef5ac6583e993cdf1a7709c0fc8c796fa43c5a58d8ac

            SHA512

            7bd5b3f167c969f7cc101cd31998e302c6e6341dc30fea017f70f1bc7b0cdc6e0a325b155a9ea24cf4a0fe12cad7331bad206cb3e5345e1a9781ba2dbd2f40c8

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            16186d23190fcdda8a73bdedc95d24bf

            SHA1

            6e4515861865a51e429039af427968b31abbfa23

            SHA256

            4896da6fb580047d7327ab9a667d6eef688c27518011c0215861c73de84d5d4a

            SHA512

            ac29dfc451028121f8e8897b6d4fd95912369fd8b0d5ea7c7cdaead7b9da3dcde0047e777fdea8843d3f5de8056c1b6a56bdf86e4f23e2101ef98486864acd06

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2f6942ac165a6e8ac96f155fdcb2c7d1

            SHA1

            0da83a1e3da2a5c45e8c7ef046e636a9329d8a64

            SHA256

            10eae3b79bae38d3b521a9980fbbe783da2520cfedb1b1770684e12950cc4cc4

            SHA512

            c5b75370c5adb9396dd0ee8306fab4a3f150af7e40904c75c748214471a79db11ad57f671191225e6816d46668ded4e01fe5a6b0effc93be913c0a688ce9d8be

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2f6942ac165a6e8ac96f155fdcb2c7d1

            SHA1

            0da83a1e3da2a5c45e8c7ef046e636a9329d8a64

            SHA256

            10eae3b79bae38d3b521a9980fbbe783da2520cfedb1b1770684e12950cc4cc4

            SHA512

            c5b75370c5adb9396dd0ee8306fab4a3f150af7e40904c75c748214471a79db11ad57f671191225e6816d46668ded4e01fe5a6b0effc93be913c0a688ce9d8be

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            df3e1fac8d9d95b78ceacd2ab10bc3f2

            SHA1

            c4ee946e21c9b3f9238dae7d73a655c6e1e4b73d

            SHA256

            0097e3d7bb53e3fab0b372b74f64dd739380e58946618983a62cc25bc520af94

            SHA512

            a983e8060a6c7b46689e8b63132cfaad733988ed80c2252b28bb863eead58eab88f500190fbeb113dceb01667fe433f43047c62310204259bcbc47668d366069

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            df3e1fac8d9d95b78ceacd2ab10bc3f2

            SHA1

            c4ee946e21c9b3f9238dae7d73a655c6e1e4b73d

            SHA256

            0097e3d7bb53e3fab0b372b74f64dd739380e58946618983a62cc25bc520af94

            SHA512

            a983e8060a6c7b46689e8b63132cfaad733988ed80c2252b28bb863eead58eab88f500190fbeb113dceb01667fe433f43047c62310204259bcbc47668d366069

          • \Users\Admin\AppData\Local\Temp\nst43C7.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst43C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst43C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst43C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst43C7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            47500f8467335a6a1a2096ee957da50e

            SHA1

            a1416d8229f3e4a82c567f7096dc35abac7b680d

            SHA256

            b29133c43a5a1e6a825cb3763c9e6a1fac43e445b4ca01019244ead05cdf9dfb

            SHA512

            3d3f47d892a95cd784cc436c1f6d17fb0b1caf240bd2efb7f1ac1757c97201e8c6279e46e782910846f6af5726df3eb94d17c49064c9c940d5b8d06660838ec0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            47500f8467335a6a1a2096ee957da50e

            SHA1

            a1416d8229f3e4a82c567f7096dc35abac7b680d

            SHA256

            b29133c43a5a1e6a825cb3763c9e6a1fac43e445b4ca01019244ead05cdf9dfb

            SHA512

            3d3f47d892a95cd784cc436c1f6d17fb0b1caf240bd2efb7f1ac1757c97201e8c6279e46e782910846f6af5726df3eb94d17c49064c9c940d5b8d06660838ec0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            47500f8467335a6a1a2096ee957da50e

            SHA1

            a1416d8229f3e4a82c567f7096dc35abac7b680d

            SHA256

            b29133c43a5a1e6a825cb3763c9e6a1fac43e445b4ca01019244ead05cdf9dfb

            SHA512

            3d3f47d892a95cd784cc436c1f6d17fb0b1caf240bd2efb7f1ac1757c97201e8c6279e46e782910846f6af5726df3eb94d17c49064c9c940d5b8d06660838ec0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5b2bdab58a5e5184a049d8c34fc26fce

            SHA1

            515fb05c8cf8ee2ecb666be9e57cf2efc60e5b23

            SHA256

            e19298b94364fabdc48cef5ac6583e993cdf1a7709c0fc8c796fa43c5a58d8ac

            SHA512

            7bd5b3f167c969f7cc101cd31998e302c6e6341dc30fea017f70f1bc7b0cdc6e0a325b155a9ea24cf4a0fe12cad7331bad206cb3e5345e1a9781ba2dbd2f40c8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5b2bdab58a5e5184a049d8c34fc26fce

            SHA1

            515fb05c8cf8ee2ecb666be9e57cf2efc60e5b23

            SHA256

            e19298b94364fabdc48cef5ac6583e993cdf1a7709c0fc8c796fa43c5a58d8ac

            SHA512

            7bd5b3f167c969f7cc101cd31998e302c6e6341dc30fea017f70f1bc7b0cdc6e0a325b155a9ea24cf4a0fe12cad7331bad206cb3e5345e1a9781ba2dbd2f40c8

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            16186d23190fcdda8a73bdedc95d24bf

            SHA1

            6e4515861865a51e429039af427968b31abbfa23

            SHA256

            4896da6fb580047d7327ab9a667d6eef688c27518011c0215861c73de84d5d4a

            SHA512

            ac29dfc451028121f8e8897b6d4fd95912369fd8b0d5ea7c7cdaead7b9da3dcde0047e777fdea8843d3f5de8056c1b6a56bdf86e4f23e2101ef98486864acd06

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2f6942ac165a6e8ac96f155fdcb2c7d1

            SHA1

            0da83a1e3da2a5c45e8c7ef046e636a9329d8a64

            SHA256

            10eae3b79bae38d3b521a9980fbbe783da2520cfedb1b1770684e12950cc4cc4

            SHA512

            c5b75370c5adb9396dd0ee8306fab4a3f150af7e40904c75c748214471a79db11ad57f671191225e6816d46668ded4e01fe5a6b0effc93be913c0a688ce9d8be

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            df3e1fac8d9d95b78ceacd2ab10bc3f2

            SHA1

            c4ee946e21c9b3f9238dae7d73a655c6e1e4b73d

            SHA256

            0097e3d7bb53e3fab0b372b74f64dd739380e58946618983a62cc25bc520af94

            SHA512

            a983e8060a6c7b46689e8b63132cfaad733988ed80c2252b28bb863eead58eab88f500190fbeb113dceb01667fe433f43047c62310204259bcbc47668d366069

          • memory/668-86-0x0000000000000000-mapping.dmp

          • memory/960-87-0x0000000000000000-mapping.dmp

          • memory/1156-81-0x0000000000000000-mapping.dmp

          • memory/1168-80-0x0000000000000000-mapping.dmp

          • memory/1560-70-0x0000000000000000-mapping.dmp

          • memory/1608-62-0x0000000000000000-mapping.dmp

          • memory/1656-59-0x0000000000000000-mapping.dmp

          • memory/1688-76-0x0000000000000000-mapping.dmp

          • memory/1784-57-0x0000000000000000-mapping.dmp

          • memory/1796-64-0x0000000000000000-mapping.dmp

          • memory/1800-61-0x0000000000000000-mapping.dmp

          • memory/2044-54-0x0000000075F81000-0x0000000075F83000-memory.dmp

            Filesize

            8KB

          • memory/2044-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2044-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB