Analysis

  • max time kernel
    137s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 14:16

General

  • Target

    8dfa03ae7624872aabb255ef3bcbe82ce143823e0d8b17e6b298a43e65dc5338.exe

  • Size

    562KB

  • MD5

    b2823e21063c2a601efa066979157d53

  • SHA1

    b81fbf956a11c099bba4be043228a6c727cb31b8

  • SHA256

    8dfa03ae7624872aabb255ef3bcbe82ce143823e0d8b17e6b298a43e65dc5338

  • SHA512

    0a18904a14e6abbfe322e3e24ac4117b09900318bdde70df12a6d551b2988c679055baaa1915688cdf4ef8db6f66cc103660934657728c92b681fcaa46f51e5c

  • SSDEEP

    12288:/PRYzHbfwKIzWhz9dkHjbBixfJlO85L0M+tcLF+v4FGGfI:yz7fXIzWB9dkHjbExfJ/5wcF+v4Fxf

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8dfa03ae7624872aabb255ef3bcbe82ce143823e0d8b17e6b298a43e65dc5338.exe
    "C:\Users\Admin\AppData\Local\Temp\8dfa03ae7624872aabb255ef3bcbe82ce143823e0d8b17e6b298a43e65dc5338.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:1932
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4924
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4828
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4800
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1320
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4572
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1192
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4808
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:204
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:484
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3024
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4996
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4392
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3488

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsc8E5C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            48ff0138699d3a974bfa154592f3c33c

            SHA1

            1b4c73930a47f8fbb4c68f1225863d638a022b59

            SHA256

            02acfeb59ca5364eb7e76db97787c07760a46d0ec7ec648f5928551c1890b5bd

            SHA512

            1c205071932a9558125381a16f53f7e4173cac6d9b216b8436bffab6eb2944b8f6b395eaa473953d2328c7676a5097e46f458f93e2e9725b3b3aa3f9375c6a3e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            48ff0138699d3a974bfa154592f3c33c

            SHA1

            1b4c73930a47f8fbb4c68f1225863d638a022b59

            SHA256

            02acfeb59ca5364eb7e76db97787c07760a46d0ec7ec648f5928551c1890b5bd

            SHA512

            1c205071932a9558125381a16f53f7e4173cac6d9b216b8436bffab6eb2944b8f6b395eaa473953d2328c7676a5097e46f458f93e2e9725b3b3aa3f9375c6a3e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            48ff0138699d3a974bfa154592f3c33c

            SHA1

            1b4c73930a47f8fbb4c68f1225863d638a022b59

            SHA256

            02acfeb59ca5364eb7e76db97787c07760a46d0ec7ec648f5928551c1890b5bd

            SHA512

            1c205071932a9558125381a16f53f7e4173cac6d9b216b8436bffab6eb2944b8f6b395eaa473953d2328c7676a5097e46f458f93e2e9725b3b3aa3f9375c6a3e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            48ff0138699d3a974bfa154592f3c33c

            SHA1

            1b4c73930a47f8fbb4c68f1225863d638a022b59

            SHA256

            02acfeb59ca5364eb7e76db97787c07760a46d0ec7ec648f5928551c1890b5bd

            SHA512

            1c205071932a9558125381a16f53f7e4173cac6d9b216b8436bffab6eb2944b8f6b395eaa473953d2328c7676a5097e46f458f93e2e9725b3b3aa3f9375c6a3e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1f4f5dbc65945df9ec383605e12e5d37

            SHA1

            308c515c6c7e578978590119f9a152e1f980e5ad

            SHA256

            af87f755a5f3f0717921fd02aa687af5229c365664e19519b786600ddf7d0379

            SHA512

            29e84bb53b4d9873d75ea364bd6e330323eaf5f1c8b7c0942a8fd1b644bbb5a1389d41263a2ce0ce821fbe65e7388a7bea3f73f5368103d20e945d795353d8f5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1f4f5dbc65945df9ec383605e12e5d37

            SHA1

            308c515c6c7e578978590119f9a152e1f980e5ad

            SHA256

            af87f755a5f3f0717921fd02aa687af5229c365664e19519b786600ddf7d0379

            SHA512

            29e84bb53b4d9873d75ea364bd6e330323eaf5f1c8b7c0942a8fd1b644bbb5a1389d41263a2ce0ce821fbe65e7388a7bea3f73f5368103d20e945d795353d8f5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1f4f5dbc65945df9ec383605e12e5d37

            SHA1

            308c515c6c7e578978590119f9a152e1f980e5ad

            SHA256

            af87f755a5f3f0717921fd02aa687af5229c365664e19519b786600ddf7d0379

            SHA512

            29e84bb53b4d9873d75ea364bd6e330323eaf5f1c8b7c0942a8fd1b644bbb5a1389d41263a2ce0ce821fbe65e7388a7bea3f73f5368103d20e945d795353d8f5

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e67923159326e70a4142e7e08c7d92f3

            SHA1

            50762925e13286817774b40796190e89d97f19bd

            SHA256

            5b88ea755e58cd873d3c441ca7921afb825505d68c731a31ee2b4572b0d8f896

            SHA512

            b1931b0963d9e81bdb13c8d89ef0c080d1366d823b1ebc613de98e914c2c90a9f173af22ff79175dabb1f9eebecce6c14618edb0a0028c9c9efc73842633fd14

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e67923159326e70a4142e7e08c7d92f3

            SHA1

            50762925e13286817774b40796190e89d97f19bd

            SHA256

            5b88ea755e58cd873d3c441ca7921afb825505d68c731a31ee2b4572b0d8f896

            SHA512

            b1931b0963d9e81bdb13c8d89ef0c080d1366d823b1ebc613de98e914c2c90a9f173af22ff79175dabb1f9eebecce6c14618edb0a0028c9c9efc73842633fd14

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a57cda317acfc136c53bfb4a79799d42

            SHA1

            e668c9dd640860b9dd36d378ae45daed00ec5ba5

            SHA256

            e7bcb6ef3782ff715fe498df7d63b750599b4a740220f5a3830320897e0ac302

            SHA512

            379fde2f1e775eac590f426558728066dce550736778d2137170738dd666363ebc872114dcf6028fe9346035f75d7947ab1215c196c4667ec40952bfbf3b6479

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a57cda317acfc136c53bfb4a79799d42

            SHA1

            e668c9dd640860b9dd36d378ae45daed00ec5ba5

            SHA256

            e7bcb6ef3782ff715fe498df7d63b750599b4a740220f5a3830320897e0ac302

            SHA512

            379fde2f1e775eac590f426558728066dce550736778d2137170738dd666363ebc872114dcf6028fe9346035f75d7947ab1215c196c4667ec40952bfbf3b6479

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a57cda317acfc136c53bfb4a79799d42

            SHA1

            e668c9dd640860b9dd36d378ae45daed00ec5ba5

            SHA256

            e7bcb6ef3782ff715fe498df7d63b750599b4a740220f5a3830320897e0ac302

            SHA512

            379fde2f1e775eac590f426558728066dce550736778d2137170738dd666363ebc872114dcf6028fe9346035f75d7947ab1215c196c4667ec40952bfbf3b6479

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3ab7c16a1a86aa4317066d687beb3109

            SHA1

            bdcfb0003f1128453495c203000d4e5915e1b65f

            SHA256

            9c8d355e646a18815f0dfa8d8ca2af2d4eb477c4e511570c0bffcb321ed39a73

            SHA512

            bccf62ab9fe2885a476c6efee8457a91bdece7a9d39f1e8c6f463d08e97994d99d202569b34e25d0d3d8c9fb98e62f0c9660251abc47c6ee1dca9d90c14b26f1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3ab7c16a1a86aa4317066d687beb3109

            SHA1

            bdcfb0003f1128453495c203000d4e5915e1b65f

            SHA256

            9c8d355e646a18815f0dfa8d8ca2af2d4eb477c4e511570c0bffcb321ed39a73

            SHA512

            bccf62ab9fe2885a476c6efee8457a91bdece7a9d39f1e8c6f463d08e97994d99d202569b34e25d0d3d8c9fb98e62f0c9660251abc47c6ee1dca9d90c14b26f1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3ab7c16a1a86aa4317066d687beb3109

            SHA1

            bdcfb0003f1128453495c203000d4e5915e1b65f

            SHA256

            9c8d355e646a18815f0dfa8d8ca2af2d4eb477c4e511570c0bffcb321ed39a73

            SHA512

            bccf62ab9fe2885a476c6efee8457a91bdece7a9d39f1e8c6f463d08e97994d99d202569b34e25d0d3d8c9fb98e62f0c9660251abc47c6ee1dca9d90c14b26f1

          • memory/204-158-0x0000000000000000-mapping.dmp

          • memory/484-159-0x0000000000000000-mapping.dmp

          • memory/1192-147-0x0000000000000000-mapping.dmp

          • memory/1320-141-0x0000000000000000-mapping.dmp

          • memory/1932-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1932-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3024-165-0x0000000000000000-mapping.dmp

          • memory/4572-142-0x0000000000000000-mapping.dmp

          • memory/4800-140-0x0000000000000000-mapping.dmp

          • memory/4808-153-0x0000000000000000-mapping.dmp

          • memory/4828-137-0x0000000000000000-mapping.dmp

          • memory/4924-136-0x0000000000000000-mapping.dmp

          • memory/4996-166-0x0000000000000000-mapping.dmp