Analysis

  • max time kernel
    48s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25/11/2022, 20:59

General

  • Target

    c2f8c68b9da3ec34c38920aae7868a2104b410e1854ad7cb0e1df86922ddf311.exe

  • Size

    562KB

  • MD5

    88311a93f019a4d98c78e5575138c3aa

  • SHA1

    a27ed197af3fd049aaf9534df67ced0ca0ee23ae

  • SHA256

    c2f8c68b9da3ec34c38920aae7868a2104b410e1854ad7cb0e1df86922ddf311

  • SHA512

    db7f9503f2ff76e3fc7d5ead91db767ef15802eb17161d099352faefba828857853fe64d92112759c60aa414bb3d50137ee9a957c31cc3b787c2f1777d42b625

  • SSDEEP

    12288:TPRYzHbf7jetRfL0b66FN+806OgWAZJWHAoFvwG9evcX:Oz7f/GT0bTNd/h7WgnG9kc

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\c2f8c68b9da3ec34c38920aae7868a2104b410e1854ad7cb0e1df86922ddf311.exe
    "C:\Users\Admin\AppData\Local\Temp\c2f8c68b9da3ec34c38920aae7868a2104b410e1854ad7cb0e1df86922ddf311.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:1544
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1720
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:536
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:700
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1660
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1732
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:784
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1956
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1272
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:988

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f53bd78c9c944ebb26955fcb61a85f2

            SHA1

            24a0dd0fa0f8b2cc5c325c9313284a96b434cfff

            SHA256

            75e47069938963f38791fc82edebd111e292b52b8187afe776443a0e163b2019

            SHA512

            f6ce8b9816e7ee688dc32f7b2487fe7a41097bfe61065be46ea6d91e961c3dc7faed87d750196bb17a9a707a6240f2365b797cacc857bbe86b972a4bffcc3333

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ebd4f81266d702f302d279b5dd9c43fe

            SHA1

            6ca106e469dd61e589ff7755963835c658580312

            SHA256

            87624ebaf5330730aa9a07590b19bfb53ee1e1f41c06cac485bd6663fd0d94e7

            SHA512

            569626e450a8b0f90e707de1e6ad0626116c03a60289c7959b920ec163624f4f53971bbfdbea54e799e1c48491b3bf7a8039ff3e3608c37620a76bb14dd418bf

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2d7fd7b67ebad388cd6f8cafe61b2205

            SHA1

            b883565a8c9362dfcd536e837737b175ec738c8b

            SHA256

            956cff26c6efcfdc14f2a85c7112331f97d772bcde821c8922f413328ea2e532

            SHA512

            19b8afa682e44b7aec2c9f1284cfddc10d95f2152f4ab20b42aedc4aedc44eb661ece1c7f898d5e9e4576f6d00257449dbbfe5cc4f1253b4d18fb34c483aa75b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5199c5a806c0f37cf5621e4f2484ebdf

            SHA1

            c206bb63783650da8a4b24af0b119b038cb2b87f

            SHA256

            5200572d735b430cb107e5ec6d8823bcab9acb97d759c90364aa9bd456f18cae

            SHA512

            699a06b980dcaa0519c5553b496cc6c0cbd974d061b23e3e4802fc3b36ebc29e4744388f260b4ac1f2aba01c1b88dd05ac14e3c3f2dc73215b3207ee85bc06c4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5199c5a806c0f37cf5621e4f2484ebdf

            SHA1

            c206bb63783650da8a4b24af0b119b038cb2b87f

            SHA256

            5200572d735b430cb107e5ec6d8823bcab9acb97d759c90364aa9bd456f18cae

            SHA512

            699a06b980dcaa0519c5553b496cc6c0cbd974d061b23e3e4802fc3b36ebc29e4744388f260b4ac1f2aba01c1b88dd05ac14e3c3f2dc73215b3207ee85bc06c4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            bd446275605e90ce7d006ac0e9797f57

            SHA1

            f4e79c41e295542cf9322f2793a5abbf3d1300b0

            SHA256

            055d1f286a0cd80a77cdbcbfc8ebf4c61c31af27db0b75106540282dbf8065d4

            SHA512

            d4f9a423f8b6645859e107ead2abf1ac335c5ad95e59b2faf6d39722f5f81ee77fab4f18ca13d8dd6a00e9552b2e35d2ab8c42b08b7cc3fd34b57a4ce940dcf3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            bd446275605e90ce7d006ac0e9797f57

            SHA1

            f4e79c41e295542cf9322f2793a5abbf3d1300b0

            SHA256

            055d1f286a0cd80a77cdbcbfc8ebf4c61c31af27db0b75106540282dbf8065d4

            SHA512

            d4f9a423f8b6645859e107ead2abf1ac335c5ad95e59b2faf6d39722f5f81ee77fab4f18ca13d8dd6a00e9552b2e35d2ab8c42b08b7cc3fd34b57a4ce940dcf3

          • \Users\Admin\AppData\Local\Temp\nsj2BC5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj2BC5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2BC5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2BC5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2BC5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f53bd78c9c944ebb26955fcb61a85f2

            SHA1

            24a0dd0fa0f8b2cc5c325c9313284a96b434cfff

            SHA256

            75e47069938963f38791fc82edebd111e292b52b8187afe776443a0e163b2019

            SHA512

            f6ce8b9816e7ee688dc32f7b2487fe7a41097bfe61065be46ea6d91e961c3dc7faed87d750196bb17a9a707a6240f2365b797cacc857bbe86b972a4bffcc3333

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f53bd78c9c944ebb26955fcb61a85f2

            SHA1

            24a0dd0fa0f8b2cc5c325c9313284a96b434cfff

            SHA256

            75e47069938963f38791fc82edebd111e292b52b8187afe776443a0e163b2019

            SHA512

            f6ce8b9816e7ee688dc32f7b2487fe7a41097bfe61065be46ea6d91e961c3dc7faed87d750196bb17a9a707a6240f2365b797cacc857bbe86b972a4bffcc3333

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f53bd78c9c944ebb26955fcb61a85f2

            SHA1

            24a0dd0fa0f8b2cc5c325c9313284a96b434cfff

            SHA256

            75e47069938963f38791fc82edebd111e292b52b8187afe776443a0e163b2019

            SHA512

            f6ce8b9816e7ee688dc32f7b2487fe7a41097bfe61065be46ea6d91e961c3dc7faed87d750196bb17a9a707a6240f2365b797cacc857bbe86b972a4bffcc3333

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ebd4f81266d702f302d279b5dd9c43fe

            SHA1

            6ca106e469dd61e589ff7755963835c658580312

            SHA256

            87624ebaf5330730aa9a07590b19bfb53ee1e1f41c06cac485bd6663fd0d94e7

            SHA512

            569626e450a8b0f90e707de1e6ad0626116c03a60289c7959b920ec163624f4f53971bbfdbea54e799e1c48491b3bf7a8039ff3e3608c37620a76bb14dd418bf

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ebd4f81266d702f302d279b5dd9c43fe

            SHA1

            6ca106e469dd61e589ff7755963835c658580312

            SHA256

            87624ebaf5330730aa9a07590b19bfb53ee1e1f41c06cac485bd6663fd0d94e7

            SHA512

            569626e450a8b0f90e707de1e6ad0626116c03a60289c7959b920ec163624f4f53971bbfdbea54e799e1c48491b3bf7a8039ff3e3608c37620a76bb14dd418bf

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2d7fd7b67ebad388cd6f8cafe61b2205

            SHA1

            b883565a8c9362dfcd536e837737b175ec738c8b

            SHA256

            956cff26c6efcfdc14f2a85c7112331f97d772bcde821c8922f413328ea2e532

            SHA512

            19b8afa682e44b7aec2c9f1284cfddc10d95f2152f4ab20b42aedc4aedc44eb661ece1c7f898d5e9e4576f6d00257449dbbfe5cc4f1253b4d18fb34c483aa75b

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5199c5a806c0f37cf5621e4f2484ebdf

            SHA1

            c206bb63783650da8a4b24af0b119b038cb2b87f

            SHA256

            5200572d735b430cb107e5ec6d8823bcab9acb97d759c90364aa9bd456f18cae

            SHA512

            699a06b980dcaa0519c5553b496cc6c0cbd974d061b23e3e4802fc3b36ebc29e4744388f260b4ac1f2aba01c1b88dd05ac14e3c3f2dc73215b3207ee85bc06c4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            bd446275605e90ce7d006ac0e9797f57

            SHA1

            f4e79c41e295542cf9322f2793a5abbf3d1300b0

            SHA256

            055d1f286a0cd80a77cdbcbfc8ebf4c61c31af27db0b75106540282dbf8065d4

            SHA512

            d4f9a423f8b6645859e107ead2abf1ac335c5ad95e59b2faf6d39722f5f81ee77fab4f18ca13d8dd6a00e9552b2e35d2ab8c42b08b7cc3fd34b57a4ce940dcf3

          • memory/1544-54-0x0000000075681000-0x0000000075683000-memory.dmp

            Filesize

            8KB

          • memory/1544-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1544-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB