Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 15:07

General

  • Target

    36067a58a0b6aca2d63f2d587fdb61408a4cd1ec128238b2c77a945e64519a85.exe

  • Size

    562KB

  • MD5

    cd61d898ff4ce89c001043824a7914e9

  • SHA1

    4a921b38e74a09449ca0ef3c496987bc598edfd0

  • SHA256

    36067a58a0b6aca2d63f2d587fdb61408a4cd1ec128238b2c77a945e64519a85

  • SHA512

    34b14258b15c016431931f1f0d2b77a6230cf5f47b6cfc2a48e6547fed337a01ecb7017793670635891329b04f341bfbb504b812c56e787f3f1fe744c65e833e

  • SSDEEP

    12288:pPRYzHbfJYYb6L+oDp8t/7ncr/Gw3rsHO058sUwaMfgG:oz7fTEPFk/7cr/Gw3gHx5lUw/fgG

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\36067a58a0b6aca2d63f2d587fdb61408a4cd1ec128238b2c77a945e64519a85.exe
    "C:\Users\Admin\AppData\Local\Temp\36067a58a0b6aca2d63f2d587fdb61408a4cd1ec128238b2c77a945e64519a85.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:1600
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:936
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1772
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:928
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:520
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:656
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:304
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1644
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1456
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2004
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1512
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1228
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1192

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eb4e2c0179de37a6042e6d96c00c730

            SHA1

            3ef8544abcac1efc8d39920fb32735a537d40f9b

            SHA256

            334960ddf5557b951abe28f6524ff275530b19d932dc7c9e01977f1f6698a331

            SHA512

            79fe1e78540cc750eaa22d052fa567594ac6954a107bd656dc95bc05166e3fa3321bc8f1bcbf7acba81689741c39e4b2c8b2ceb4d05a009d223df5c734d73187

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2e49fe578aad6ef3b275c240ef1617ad

            SHA1

            d773087672b93aa854e5ed36bb70ff56a2db787e

            SHA256

            8c526e5e81132115236baa3e97d0bd88455bee2a9c4e2602cf9efc6ddb3f9e48

            SHA512

            d5770b9d9d3a2e7a636e7602bad386cb2edc46ff06d757948dd489ecec217c6cdb4aafb6e03c52bf57ef5b0b2c13cac02a4df91dc14dd5bca853baf707b0cd78

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            66352832763f704c89818f584f1e0429

            SHA1

            8bf9f03fffd850f1afdb9c2df44c53af544a0d35

            SHA256

            47fae9f83b48f43a3b197aac136d9af6bc26940cac134591aaf2e5c65d6a8869

            SHA512

            083ff6cc086cc2092354dc32c5bd7fd691708d5adb63e1348d46634e85966e201371b44d9feab02e45f4f21e2d40b6ce02f596bb5ca615e02b9373a38533410f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            886e280f910a7c1e90b349cd445d5a07

            SHA1

            02ded0c8cb0aa436f39c77dc6215d260d7b9c94d

            SHA256

            8c84cec1693bd4ec9fb524b341e5063e5652e6beacdbab0302f06deb293b82b3

            SHA512

            889d02699d8863fcb88db37e0d3dc63dc092f6b0382dfcbe08e354924d2fd6734ee9d548cdd7dedd4ed6122dccd8bfe23e94e30cd7f31b6122d0ccaec3304373

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            886e280f910a7c1e90b349cd445d5a07

            SHA1

            02ded0c8cb0aa436f39c77dc6215d260d7b9c94d

            SHA256

            8c84cec1693bd4ec9fb524b341e5063e5652e6beacdbab0302f06deb293b82b3

            SHA512

            889d02699d8863fcb88db37e0d3dc63dc092f6b0382dfcbe08e354924d2fd6734ee9d548cdd7dedd4ed6122dccd8bfe23e94e30cd7f31b6122d0ccaec3304373

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5614ae906f90d564dd7a01bfaf8c3086

            SHA1

            9eca059c5b46283739bdec4eb47f46fa2f26b594

            SHA256

            29694cf19f955db8e46ff0c0f97fe27edd97e1a4e98be2480ac29fa587a0a398

            SHA512

            48b47ef83f6c1b36d75cf1d1211ac961900beb8bd30487bd0fd3d4a5c2efc0805ee2a4265cdf5b8a58a710b108751746eb9f07862aa028a37dcc9b3083e98d60

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5614ae906f90d564dd7a01bfaf8c3086

            SHA1

            9eca059c5b46283739bdec4eb47f46fa2f26b594

            SHA256

            29694cf19f955db8e46ff0c0f97fe27edd97e1a4e98be2480ac29fa587a0a398

            SHA512

            48b47ef83f6c1b36d75cf1d1211ac961900beb8bd30487bd0fd3d4a5c2efc0805ee2a4265cdf5b8a58a710b108751746eb9f07862aa028a37dcc9b3083e98d60

          • \Users\Admin\AppData\Local\Temp\nsyB3A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyB3A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyB3A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyB3A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyB3A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eb4e2c0179de37a6042e6d96c00c730

            SHA1

            3ef8544abcac1efc8d39920fb32735a537d40f9b

            SHA256

            334960ddf5557b951abe28f6524ff275530b19d932dc7c9e01977f1f6698a331

            SHA512

            79fe1e78540cc750eaa22d052fa567594ac6954a107bd656dc95bc05166e3fa3321bc8f1bcbf7acba81689741c39e4b2c8b2ceb4d05a009d223df5c734d73187

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eb4e2c0179de37a6042e6d96c00c730

            SHA1

            3ef8544abcac1efc8d39920fb32735a537d40f9b

            SHA256

            334960ddf5557b951abe28f6524ff275530b19d932dc7c9e01977f1f6698a331

            SHA512

            79fe1e78540cc750eaa22d052fa567594ac6954a107bd656dc95bc05166e3fa3321bc8f1bcbf7acba81689741c39e4b2c8b2ceb4d05a009d223df5c734d73187

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eb4e2c0179de37a6042e6d96c00c730

            SHA1

            3ef8544abcac1efc8d39920fb32735a537d40f9b

            SHA256

            334960ddf5557b951abe28f6524ff275530b19d932dc7c9e01977f1f6698a331

            SHA512

            79fe1e78540cc750eaa22d052fa567594ac6954a107bd656dc95bc05166e3fa3321bc8f1bcbf7acba81689741c39e4b2c8b2ceb4d05a009d223df5c734d73187

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2e49fe578aad6ef3b275c240ef1617ad

            SHA1

            d773087672b93aa854e5ed36bb70ff56a2db787e

            SHA256

            8c526e5e81132115236baa3e97d0bd88455bee2a9c4e2602cf9efc6ddb3f9e48

            SHA512

            d5770b9d9d3a2e7a636e7602bad386cb2edc46ff06d757948dd489ecec217c6cdb4aafb6e03c52bf57ef5b0b2c13cac02a4df91dc14dd5bca853baf707b0cd78

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2e49fe578aad6ef3b275c240ef1617ad

            SHA1

            d773087672b93aa854e5ed36bb70ff56a2db787e

            SHA256

            8c526e5e81132115236baa3e97d0bd88455bee2a9c4e2602cf9efc6ddb3f9e48

            SHA512

            d5770b9d9d3a2e7a636e7602bad386cb2edc46ff06d757948dd489ecec217c6cdb4aafb6e03c52bf57ef5b0b2c13cac02a4df91dc14dd5bca853baf707b0cd78

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            66352832763f704c89818f584f1e0429

            SHA1

            8bf9f03fffd850f1afdb9c2df44c53af544a0d35

            SHA256

            47fae9f83b48f43a3b197aac136d9af6bc26940cac134591aaf2e5c65d6a8869

            SHA512

            083ff6cc086cc2092354dc32c5bd7fd691708d5adb63e1348d46634e85966e201371b44d9feab02e45f4f21e2d40b6ce02f596bb5ca615e02b9373a38533410f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            886e280f910a7c1e90b349cd445d5a07

            SHA1

            02ded0c8cb0aa436f39c77dc6215d260d7b9c94d

            SHA256

            8c84cec1693bd4ec9fb524b341e5063e5652e6beacdbab0302f06deb293b82b3

            SHA512

            889d02699d8863fcb88db37e0d3dc63dc092f6b0382dfcbe08e354924d2fd6734ee9d548cdd7dedd4ed6122dccd8bfe23e94e30cd7f31b6122d0ccaec3304373

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5614ae906f90d564dd7a01bfaf8c3086

            SHA1

            9eca059c5b46283739bdec4eb47f46fa2f26b594

            SHA256

            29694cf19f955db8e46ff0c0f97fe27edd97e1a4e98be2480ac29fa587a0a398

            SHA512

            48b47ef83f6c1b36d75cf1d1211ac961900beb8bd30487bd0fd3d4a5c2efc0805ee2a4265cdf5b8a58a710b108751746eb9f07862aa028a37dcc9b3083e98d60

          • memory/304-70-0x0000000000000000-mapping.dmp

          • memory/520-62-0x0000000000000000-mapping.dmp

          • memory/656-64-0x0000000000000000-mapping.dmp

          • memory/928-61-0x0000000000000000-mapping.dmp

          • memory/936-57-0x0000000000000000-mapping.dmp

          • memory/1456-80-0x0000000000000000-mapping.dmp

          • memory/1512-87-0x0000000000000000-mapping.dmp

          • memory/1600-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1600-54-0x0000000076461000-0x0000000076463000-memory.dmp

            Filesize

            8KB

          • memory/1600-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1644-76-0x0000000000000000-mapping.dmp

          • memory/1772-58-0x0000000000000000-mapping.dmp

          • memory/1964-81-0x0000000000000000-mapping.dmp

          • memory/2004-86-0x0000000000000000-mapping.dmp