Analysis

  • max time kernel
    47s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:31

General

  • Target

    26951c00e7e2fc91d7a934f73262731f77a7fc02a0f1aa0ac9005e76c55367f4.exe

  • Size

    602KB

  • MD5

    1829e6fab14e46baee23a6e3cc45b766

  • SHA1

    5eb2a4409d2e171d25e94b450eb7dba5395abdfa

  • SHA256

    26951c00e7e2fc91d7a934f73262731f77a7fc02a0f1aa0ac9005e76c55367f4

  • SHA512

    abaf3c52e6d5631d09caa32a6426657ef210bc281111f7e70853846976dbb19746c3e401b31e74ca60819d4b9b476ce7671db9102d3fa3284a4ac28f436503a9

  • SSDEEP

    12288:nIny5DYTjDbCEmj4BJ1lMJlfrzIwQ6TYC0tU9baSiwVrYB:vUTjDbOM9lMJi6Tl4Gb3C

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\26951c00e7e2fc91d7a934f73262731f77a7fc02a0f1aa0ac9005e76c55367f4.exe
    "C:\Users\Admin\AppData\Local\Temp\26951c00e7e2fc91d7a934f73262731f77a7fc02a0f1aa0ac9005e76c55367f4.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:948
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:888
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:572
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:524
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1584
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:484
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1572
        • 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:772
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1652
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1920
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:672
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1092

          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

            5ddd0479e8ac68c0c059d0abf81ca7a6

            SHA1

            f00126f922740b77ccd1a80bd6aac721b81f2ef9

            SHA256

            546cb18026c212f28db00361730082c1fb552e890778bc72414781dbefefaee4

            SHA512

            4d3fa933fd3cfe2e487c1ecff12d1ede34e3b4c51da175ac8cf7d01f072d138ddc7933d21f73c55bbfea9e76b582523d2129be073abcb336d5dedc7041a2c2b1

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

            241KB

            MD5

            a39d17ff9e4b581ebd819f51149e2d57

            SHA1

            b9610acad76fc00e64714246fc3a3fb7a9415bf1

            SHA256

            4935ed0cee44ebd28d688070104d326cf04a0a85b9540560c36f2e111a51a127

            SHA512

            7b55b9f6b859fc8a8534f04847947f03c8ccc91a8b74c4ad3e4c931cc20516c4020748b09aca17e4882b30666eaa7ca647b0e6d31c4f1a5775658a58cab99b7f

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

            108KB

            MD5

            e63faf2c2c7bffc984c7625e9ae4ebbe

            SHA1

            f653480ccef98617781285b6e1a16a553474f3f4

            SHA256

            df9dbbebd4468081a8f2b76a2ed4fea1de95cdfe12760251aa916d9fb09f7a10

            SHA512

            cf731396af33db8f08d4db306ca0818655fa7611793b71201f78927f3831d67c8838d0492b9093c43be499dd39fff27095f5d30a611811676f28d5c350052e33

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

            176KB

            MD5

            ea7a25ad8b89583d27ce58c1220fed92

            SHA1

            3e8afd4618b08e7361601f7e9ab61d3cf5b487b3

            SHA256

            2fc6a021c173c6980eb8451ab050d85439b430c09ea034a3c3819249d125cf35

            SHA512

            9270e2f6be781f6f7d74a0912f0ea26f8b0651afa6ded36f394f7f9621b2707547daa5643b513e0b74e9f66f1a6fb5c678f8dab9baf57bbead5de0b1fe07b166

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

            176KB

            MD5

            ea7a25ad8b89583d27ce58c1220fed92

            SHA1

            3e8afd4618b08e7361601f7e9ab61d3cf5b487b3

            SHA256

            2fc6a021c173c6980eb8451ab050d85439b430c09ea034a3c3819249d125cf35

            SHA512

            9270e2f6be781f6f7d74a0912f0ea26f8b0651afa6ded36f394f7f9621b2707547daa5643b513e0b74e9f66f1a6fb5c678f8dab9baf57bbead5de0b1fe07b166

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

            158KB

            MD5

            f57f39ca796ea790016771892c9eab6a

            SHA1

            941dd42554acccb994775dc90e8341fdafdae8c6

            SHA256

            e858262c65b399f249dc770cc907cbaee334991302d4003825af984787fd18b6

            SHA512

            f510c779eb3b7452d98282fc2a459d44b3cd4bd08bc4660651b0e0c8d0d110b5150546341f96c00892627eaca27b37b35bfab9814599f2a8be86a5b6c3cc69dc

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

            158KB

            MD5

            f57f39ca796ea790016771892c9eab6a

            SHA1

            941dd42554acccb994775dc90e8341fdafdae8c6

            SHA256

            e858262c65b399f249dc770cc907cbaee334991302d4003825af984787fd18b6

            SHA512

            f510c779eb3b7452d98282fc2a459d44b3cd4bd08bc4660651b0e0c8d0d110b5150546341f96c00892627eaca27b37b35bfab9814599f2a8be86a5b6c3cc69dc

          • \Users\Admin\AppData\Local\Temp\nsiF366.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsiF366.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiF366.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiF366.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiF366.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            5ddd0479e8ac68c0c059d0abf81ca7a6

            SHA1

            f00126f922740b77ccd1a80bd6aac721b81f2ef9

            SHA256

            546cb18026c212f28db00361730082c1fb552e890778bc72414781dbefefaee4

            SHA512

            4d3fa933fd3cfe2e487c1ecff12d1ede34e3b4c51da175ac8cf7d01f072d138ddc7933d21f73c55bbfea9e76b582523d2129be073abcb336d5dedc7041a2c2b1

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            5ddd0479e8ac68c0c059d0abf81ca7a6

            SHA1

            f00126f922740b77ccd1a80bd6aac721b81f2ef9

            SHA256

            546cb18026c212f28db00361730082c1fb552e890778bc72414781dbefefaee4

            SHA512

            4d3fa933fd3cfe2e487c1ecff12d1ede34e3b4c51da175ac8cf7d01f072d138ddc7933d21f73c55bbfea9e76b582523d2129be073abcb336d5dedc7041a2c2b1

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            5ddd0479e8ac68c0c059d0abf81ca7a6

            SHA1

            f00126f922740b77ccd1a80bd6aac721b81f2ef9

            SHA256

            546cb18026c212f28db00361730082c1fb552e890778bc72414781dbefefaee4

            SHA512

            4d3fa933fd3cfe2e487c1ecff12d1ede34e3b4c51da175ac8cf7d01f072d138ddc7933d21f73c55bbfea9e76b582523d2129be073abcb336d5dedc7041a2c2b1

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            a39d17ff9e4b581ebd819f51149e2d57

            SHA1

            b9610acad76fc00e64714246fc3a3fb7a9415bf1

            SHA256

            4935ed0cee44ebd28d688070104d326cf04a0a85b9540560c36f2e111a51a127

            SHA512

            7b55b9f6b859fc8a8534f04847947f03c8ccc91a8b74c4ad3e4c931cc20516c4020748b09aca17e4882b30666eaa7ca647b0e6d31c4f1a5775658a58cab99b7f

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            a39d17ff9e4b581ebd819f51149e2d57

            SHA1

            b9610acad76fc00e64714246fc3a3fb7a9415bf1

            SHA256

            4935ed0cee44ebd28d688070104d326cf04a0a85b9540560c36f2e111a51a127

            SHA512

            7b55b9f6b859fc8a8534f04847947f03c8ccc91a8b74c4ad3e4c931cc20516c4020748b09aca17e4882b30666eaa7ca647b0e6d31c4f1a5775658a58cab99b7f

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            e63faf2c2c7bffc984c7625e9ae4ebbe

            SHA1

            f653480ccef98617781285b6e1a16a553474f3f4

            SHA256

            df9dbbebd4468081a8f2b76a2ed4fea1de95cdfe12760251aa916d9fb09f7a10

            SHA512

            cf731396af33db8f08d4db306ca0818655fa7611793b71201f78927f3831d67c8838d0492b9093c43be499dd39fff27095f5d30a611811676f28d5c350052e33

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ea7a25ad8b89583d27ce58c1220fed92

            SHA1

            3e8afd4618b08e7361601f7e9ab61d3cf5b487b3

            SHA256

            2fc6a021c173c6980eb8451ab050d85439b430c09ea034a3c3819249d125cf35

            SHA512

            9270e2f6be781f6f7d74a0912f0ea26f8b0651afa6ded36f394f7f9621b2707547daa5643b513e0b74e9f66f1a6fb5c678f8dab9baf57bbead5de0b1fe07b166

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            f57f39ca796ea790016771892c9eab6a

            SHA1

            941dd42554acccb994775dc90e8341fdafdae8c6

            SHA256

            e858262c65b399f249dc770cc907cbaee334991302d4003825af984787fd18b6

            SHA512

            f510c779eb3b7452d98282fc2a459d44b3cd4bd08bc4660651b0e0c8d0d110b5150546341f96c00892627eaca27b37b35bfab9814599f2a8be86a5b6c3cc69dc

          • memory/112-58-0x0000000000000000-mapping.dmp
          • memory/484-70-0x0000000000000000-mapping.dmp
          • memory/524-62-0x0000000000000000-mapping.dmp
          • memory/572-61-0x0000000000000000-mapping.dmp
          • memory/772-81-0x0000000000000000-mapping.dmp
          • memory/888-57-0x0000000000000000-mapping.dmp
          • memory/948-54-0x0000000076961000-0x0000000076963000-memory.dmp
            Filesize

            8KB

          • memory/948-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/948-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1572-76-0x0000000000000000-mapping.dmp
          • memory/1584-64-0x0000000000000000-mapping.dmp
          • memory/1652-86-0x0000000000000000-mapping.dmp
          • memory/1920-87-0x0000000000000000-mapping.dmp
          • memory/2020-80-0x0000000000000000-mapping.dmp