Analysis

  • max time kernel
    44s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:21

General

  • Target

    7df347f77f7cebbced2f4a1838dbf1f6e11c57e2533c801e64e5a0a6172a1eef.exe

  • Size

    602KB

  • MD5

    671d3263c7a5257449dae33a10fc0440

  • SHA1

    81bed15828da6c845848e91d7edbda7e0c219477

  • SHA256

    7df347f77f7cebbced2f4a1838dbf1f6e11c57e2533c801e64e5a0a6172a1eef

  • SHA512

    1193b26f56dcf3662583c073928ec2d007645b0b3529114a8bea1c03b936c79f72d8d07bfc3964d5bed9144cfaeeb3f1f47886b8d524bed54182996a3f928e82

  • SSDEEP

    12288:mIny5DYTWaak2dhoqIzRT86nIV4Up6j0VGbe74Zq:IUTWakKT8B4gY0Ub3Zq

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\7df347f77f7cebbced2f4a1838dbf1f6e11c57e2533c801e64e5a0a6172a1eef.exe
    "C:\Users\Admin\AppData\Local\Temp\7df347f77f7cebbced2f4a1838dbf1f6e11c57e2533c801e64e5a0a6172a1eef.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:1352
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1324
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1376
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:844
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1664
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1840
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:756
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1888
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:700
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1672
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1720
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1948

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d78bd256358f6256e23651080fd3ece9

            SHA1

            dbd1f5d778cdb87b6fa7d4b7ad9fa658053eae91

            SHA256

            a860e87f3631acdb5bda0ab9f6c6645eaf1eca2675717e42f63a76a25d85f318

            SHA512

            8943a50326e222951230a8205d722d5a9318b0132ea726008c39e9bc9c7f1b86864aa53fd71fd729fa56ed21fa077b0d75ada9a2b670213ff04e237b50c031c5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ee68b0fa25515b613d561093b7000bb8

            SHA1

            c3965796afaf75aec48f067d85c62f8c12613c09

            SHA256

            d201fa5ab1c93ea8101fcce935ef3dad7c6469a2b044887408229a50c326a5b5

            SHA512

            0eb80d07ec5f221e4df205e01ff7c689457ef6cdda1844ca8737204e091b6a61e2760bb51bde733d40b5c18c251e82eb1ace22bbdb34a84ed0a52c4b972e665c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            13980b0811ac22080325dd0186260fff

            SHA1

            71f7478abf65faf4b56f0cba3d743b3cfb473d56

            SHA256

            b0fe4ccaa3b3d0aecdecb510e8a1d630ddccee724505ee86fe3cef7017c7525f

            SHA512

            8202ce536d0779161a4f7935b43bdaddad243ef3d12bae45fecbcf9bdf6673c34cc67f5236300894de68f0a46ebfe284781c1a941b31b8fc0a363184384456b9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            91c77ff634da450c293c625b2da63960

            SHA1

            8746ab23c47bcaab064b48e327825c32912ffec3

            SHA256

            821cf5ba5c0261a0827ad039542883248745851b18c80956208d6af95b62ac5e

            SHA512

            95931377111b95738106e3017cf6f61df77da54f268569bcb8e50c4d6ced34c3dd758c8a698f22010ae03b6278c10807921a82eea3657b28e312dd5ee3659cc6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            91c77ff634da450c293c625b2da63960

            SHA1

            8746ab23c47bcaab064b48e327825c32912ffec3

            SHA256

            821cf5ba5c0261a0827ad039542883248745851b18c80956208d6af95b62ac5e

            SHA512

            95931377111b95738106e3017cf6f61df77da54f268569bcb8e50c4d6ced34c3dd758c8a698f22010ae03b6278c10807921a82eea3657b28e312dd5ee3659cc6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6211d2fd1aeae3f3eefbce628877d081

            SHA1

            13094ac7e48ebfb35fbccafd316361df4889a89c

            SHA256

            8feb87ff0f4a62958c06be5fabc05a25c4299a1bb163ffcf1ae3ae722f19685a

            SHA512

            a50933374bb18c460ddf23c98d7d005ac5dc4478074696a2501b376cfd25dba04a4961d0d01df7cf1d7256870204345265c867b27f5c92e40c7c78ae7f7565c5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6211d2fd1aeae3f3eefbce628877d081

            SHA1

            13094ac7e48ebfb35fbccafd316361df4889a89c

            SHA256

            8feb87ff0f4a62958c06be5fabc05a25c4299a1bb163ffcf1ae3ae722f19685a

            SHA512

            a50933374bb18c460ddf23c98d7d005ac5dc4478074696a2501b376cfd25dba04a4961d0d01df7cf1d7256870204345265c867b27f5c92e40c7c78ae7f7565c5

          • \Users\Admin\AppData\Local\Temp\nst3E4B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst3E4B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3E4B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3E4B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3E4B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d78bd256358f6256e23651080fd3ece9

            SHA1

            dbd1f5d778cdb87b6fa7d4b7ad9fa658053eae91

            SHA256

            a860e87f3631acdb5bda0ab9f6c6645eaf1eca2675717e42f63a76a25d85f318

            SHA512

            8943a50326e222951230a8205d722d5a9318b0132ea726008c39e9bc9c7f1b86864aa53fd71fd729fa56ed21fa077b0d75ada9a2b670213ff04e237b50c031c5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d78bd256358f6256e23651080fd3ece9

            SHA1

            dbd1f5d778cdb87b6fa7d4b7ad9fa658053eae91

            SHA256

            a860e87f3631acdb5bda0ab9f6c6645eaf1eca2675717e42f63a76a25d85f318

            SHA512

            8943a50326e222951230a8205d722d5a9318b0132ea726008c39e9bc9c7f1b86864aa53fd71fd729fa56ed21fa077b0d75ada9a2b670213ff04e237b50c031c5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d78bd256358f6256e23651080fd3ece9

            SHA1

            dbd1f5d778cdb87b6fa7d4b7ad9fa658053eae91

            SHA256

            a860e87f3631acdb5bda0ab9f6c6645eaf1eca2675717e42f63a76a25d85f318

            SHA512

            8943a50326e222951230a8205d722d5a9318b0132ea726008c39e9bc9c7f1b86864aa53fd71fd729fa56ed21fa077b0d75ada9a2b670213ff04e237b50c031c5

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ee68b0fa25515b613d561093b7000bb8

            SHA1

            c3965796afaf75aec48f067d85c62f8c12613c09

            SHA256

            d201fa5ab1c93ea8101fcce935ef3dad7c6469a2b044887408229a50c326a5b5

            SHA512

            0eb80d07ec5f221e4df205e01ff7c689457ef6cdda1844ca8737204e091b6a61e2760bb51bde733d40b5c18c251e82eb1ace22bbdb34a84ed0a52c4b972e665c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ee68b0fa25515b613d561093b7000bb8

            SHA1

            c3965796afaf75aec48f067d85c62f8c12613c09

            SHA256

            d201fa5ab1c93ea8101fcce935ef3dad7c6469a2b044887408229a50c326a5b5

            SHA512

            0eb80d07ec5f221e4df205e01ff7c689457ef6cdda1844ca8737204e091b6a61e2760bb51bde733d40b5c18c251e82eb1ace22bbdb34a84ed0a52c4b972e665c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            13980b0811ac22080325dd0186260fff

            SHA1

            71f7478abf65faf4b56f0cba3d743b3cfb473d56

            SHA256

            b0fe4ccaa3b3d0aecdecb510e8a1d630ddccee724505ee86fe3cef7017c7525f

            SHA512

            8202ce536d0779161a4f7935b43bdaddad243ef3d12bae45fecbcf9bdf6673c34cc67f5236300894de68f0a46ebfe284781c1a941b31b8fc0a363184384456b9

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            91c77ff634da450c293c625b2da63960

            SHA1

            8746ab23c47bcaab064b48e327825c32912ffec3

            SHA256

            821cf5ba5c0261a0827ad039542883248745851b18c80956208d6af95b62ac5e

            SHA512

            95931377111b95738106e3017cf6f61df77da54f268569bcb8e50c4d6ced34c3dd758c8a698f22010ae03b6278c10807921a82eea3657b28e312dd5ee3659cc6

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6211d2fd1aeae3f3eefbce628877d081

            SHA1

            13094ac7e48ebfb35fbccafd316361df4889a89c

            SHA256

            8feb87ff0f4a62958c06be5fabc05a25c4299a1bb163ffcf1ae3ae722f19685a

            SHA512

            a50933374bb18c460ddf23c98d7d005ac5dc4478074696a2501b376cfd25dba04a4961d0d01df7cf1d7256870204345265c867b27f5c92e40c7c78ae7f7565c5

          • memory/700-86-0x0000000000000000-mapping.dmp

          • memory/756-80-0x0000000000000000-mapping.dmp

          • memory/844-64-0x0000000000000000-mapping.dmp

          • memory/1112-58-0x0000000000000000-mapping.dmp

          • memory/1324-57-0x0000000000000000-mapping.dmp

          • memory/1352-54-0x0000000075B51000-0x0000000075B53000-memory.dmp

            Filesize

            8KB

          • memory/1352-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1352-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1376-62-0x0000000000000000-mapping.dmp

          • memory/1664-70-0x0000000000000000-mapping.dmp

          • memory/1672-87-0x0000000000000000-mapping.dmp

          • memory/1840-76-0x0000000000000000-mapping.dmp

          • memory/1888-81-0x0000000000000000-mapping.dmp

          • memory/2024-61-0x0000000000000000-mapping.dmp