Analysis

  • max time kernel
    45s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:28

General

  • Target

    3a756bc1cb7563b0d44c00215a80c627637c4c99040f6f177daef6132d39ae55.exe

  • Size

    603KB

  • MD5

    6749d3c09f3e27498c6af0ae0c076f92

  • SHA1

    c7558d504f29ccfd5ea84f6152288770d81daf88

  • SHA256

    3a756bc1cb7563b0d44c00215a80c627637c4c99040f6f177daef6132d39ae55

  • SHA512

    e393a5ce75dcd6a8dbb14d710bfb4bb5391a0e716a0e3efccf8a74890ed4d9968d97ec7a14ffe815fa8381a06673c6dbd6d6e3ecce6de567d984376fb63a6a42

  • SSDEEP

    12288:9Iny5DYTMI/400kbzxWpv0qv1mW+LFjtuEIyN8vvhtSLQoU0qb92V:pUTM4gkbMpvB1m7FRufy4vqsopqb0

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\3a756bc1cb7563b0d44c00215a80c627637c4c99040f6f177daef6132d39ae55.exe
    "C:\Users\Admin\AppData\Local\Temp\3a756bc1cb7563b0d44c00215a80c627637c4c99040f6f177daef6132d39ae55.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:1896
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1264
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1136
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1276
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1720
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1432
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1096
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:896
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:568
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1552
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2024
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1996
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:564

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f04fb0b1511172872be576718998ecf

            SHA1

            54b007a68423e9334cbf37b0eb5f11f98e4cdc1e

            SHA256

            52cb150e16e8abafe95c9b58b423d4d1518edc6c4c1eb6f7a4a1fd5e35e83f1d

            SHA512

            15663eee0184b9bb422d3a91fda985b14ab655c2ca71cba26f8ef37a106d176eabea8e983b34f5949834f13fe83342092a12dff7089c2ede9f1753643d633b49

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            67b7a6b4e14b862cd1db82db91853d1a

            SHA1

            58f0103b5aaaea704d2743f13e9bcb3ab099cba8

            SHA256

            49dbc2c05309dbef10b673ec759c4099e3c129fc18e9486a5d7c7934cbb0837f

            SHA512

            96eed111ba95f40b308c2fcf4b33dc0ec5c0f8478ac1c2084b7211b3201bb97fd0c04bad361244a4a041288b1094d77859c8c03dd9f7105c9c2cf0146bb0a7ed

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7588d0f58e316a13cf3912d5da700c42

            SHA1

            7dcf98b94e91cba0279e2b7d126a62ef51798a6b

            SHA256

            e957b5d5c158109bb5b859f95aead163ddf9b1cd395ec63c98d1697b0f81e22a

            SHA512

            3dbfff5a04634e49fb2625c7a53be8bbafb22a7f03a45ce4c0fec1fdb45e5758498a905da5d0705adecdffddc6c55afd5a4535ff0db9757229fdb7b39ec40224

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c11e5addc729e8c07f66e1570552eed8

            SHA1

            80af4e9f773db45db7c566b02d6a52a4e355e033

            SHA256

            eee011c12b1ce947c8ba5cf23c33d0376680c7c9e9a4d9fa22eebd616885bdfa

            SHA512

            6c38dd34d617d567814ba67d7bbc430f65b62d8fb8b4c902ff709a19b2d054b03125d179e135a213e63e84fee3ed935dc0e41770879fcd385823b33c4d5dd67c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c11e5addc729e8c07f66e1570552eed8

            SHA1

            80af4e9f773db45db7c566b02d6a52a4e355e033

            SHA256

            eee011c12b1ce947c8ba5cf23c33d0376680c7c9e9a4d9fa22eebd616885bdfa

            SHA512

            6c38dd34d617d567814ba67d7bbc430f65b62d8fb8b4c902ff709a19b2d054b03125d179e135a213e63e84fee3ed935dc0e41770879fcd385823b33c4d5dd67c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e1bbcc00602da24eed4a730ee31ce2bb

            SHA1

            b42f5235f5486c7e76fff9be7c1c3f99db8e17bc

            SHA256

            dc3b2e7f3b98c69b5566f0c0c680d06245d4f4403c552df20033bdc2ab88caf5

            SHA512

            70f0713f609757e0efca63a4719829d45133a5b4097b54cb3ddc264bd626a688b9cb0509dfa7874951b4f60bc979cc44f41406212ce276be7a48f71560bc7c52

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e1bbcc00602da24eed4a730ee31ce2bb

            SHA1

            b42f5235f5486c7e76fff9be7c1c3f99db8e17bc

            SHA256

            dc3b2e7f3b98c69b5566f0c0c680d06245d4f4403c552df20033bdc2ab88caf5

            SHA512

            70f0713f609757e0efca63a4719829d45133a5b4097b54cb3ddc264bd626a688b9cb0509dfa7874951b4f60bc979cc44f41406212ce276be7a48f71560bc7c52

          • \Users\Admin\AppData\Local\Temp\nsdE765.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdE765.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdE765.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdE765.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdE765.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f04fb0b1511172872be576718998ecf

            SHA1

            54b007a68423e9334cbf37b0eb5f11f98e4cdc1e

            SHA256

            52cb150e16e8abafe95c9b58b423d4d1518edc6c4c1eb6f7a4a1fd5e35e83f1d

            SHA512

            15663eee0184b9bb422d3a91fda985b14ab655c2ca71cba26f8ef37a106d176eabea8e983b34f5949834f13fe83342092a12dff7089c2ede9f1753643d633b49

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f04fb0b1511172872be576718998ecf

            SHA1

            54b007a68423e9334cbf37b0eb5f11f98e4cdc1e

            SHA256

            52cb150e16e8abafe95c9b58b423d4d1518edc6c4c1eb6f7a4a1fd5e35e83f1d

            SHA512

            15663eee0184b9bb422d3a91fda985b14ab655c2ca71cba26f8ef37a106d176eabea8e983b34f5949834f13fe83342092a12dff7089c2ede9f1753643d633b49

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f04fb0b1511172872be576718998ecf

            SHA1

            54b007a68423e9334cbf37b0eb5f11f98e4cdc1e

            SHA256

            52cb150e16e8abafe95c9b58b423d4d1518edc6c4c1eb6f7a4a1fd5e35e83f1d

            SHA512

            15663eee0184b9bb422d3a91fda985b14ab655c2ca71cba26f8ef37a106d176eabea8e983b34f5949834f13fe83342092a12dff7089c2ede9f1753643d633b49

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            67b7a6b4e14b862cd1db82db91853d1a

            SHA1

            58f0103b5aaaea704d2743f13e9bcb3ab099cba8

            SHA256

            49dbc2c05309dbef10b673ec759c4099e3c129fc18e9486a5d7c7934cbb0837f

            SHA512

            96eed111ba95f40b308c2fcf4b33dc0ec5c0f8478ac1c2084b7211b3201bb97fd0c04bad361244a4a041288b1094d77859c8c03dd9f7105c9c2cf0146bb0a7ed

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            67b7a6b4e14b862cd1db82db91853d1a

            SHA1

            58f0103b5aaaea704d2743f13e9bcb3ab099cba8

            SHA256

            49dbc2c05309dbef10b673ec759c4099e3c129fc18e9486a5d7c7934cbb0837f

            SHA512

            96eed111ba95f40b308c2fcf4b33dc0ec5c0f8478ac1c2084b7211b3201bb97fd0c04bad361244a4a041288b1094d77859c8c03dd9f7105c9c2cf0146bb0a7ed

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7588d0f58e316a13cf3912d5da700c42

            SHA1

            7dcf98b94e91cba0279e2b7d126a62ef51798a6b

            SHA256

            e957b5d5c158109bb5b859f95aead163ddf9b1cd395ec63c98d1697b0f81e22a

            SHA512

            3dbfff5a04634e49fb2625c7a53be8bbafb22a7f03a45ce4c0fec1fdb45e5758498a905da5d0705adecdffddc6c55afd5a4535ff0db9757229fdb7b39ec40224

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c11e5addc729e8c07f66e1570552eed8

            SHA1

            80af4e9f773db45db7c566b02d6a52a4e355e033

            SHA256

            eee011c12b1ce947c8ba5cf23c33d0376680c7c9e9a4d9fa22eebd616885bdfa

            SHA512

            6c38dd34d617d567814ba67d7bbc430f65b62d8fb8b4c902ff709a19b2d054b03125d179e135a213e63e84fee3ed935dc0e41770879fcd385823b33c4d5dd67c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e1bbcc00602da24eed4a730ee31ce2bb

            SHA1

            b42f5235f5486c7e76fff9be7c1c3f99db8e17bc

            SHA256

            dc3b2e7f3b98c69b5566f0c0c680d06245d4f4403c552df20033bdc2ab88caf5

            SHA512

            70f0713f609757e0efca63a4719829d45133a5b4097b54cb3ddc264bd626a688b9cb0509dfa7874951b4f60bc979cc44f41406212ce276be7a48f71560bc7c52

          • memory/568-81-0x0000000000000000-mapping.dmp

          • memory/788-57-0x0000000000000000-mapping.dmp

          • memory/896-80-0x0000000000000000-mapping.dmp

          • memory/1096-76-0x0000000000000000-mapping.dmp

          • memory/1136-61-0x0000000000000000-mapping.dmp

          • memory/1264-58-0x0000000000000000-mapping.dmp

          • memory/1276-62-0x0000000000000000-mapping.dmp

          • memory/1432-70-0x0000000000000000-mapping.dmp

          • memory/1552-86-0x0000000000000000-mapping.dmp

          • memory/1720-64-0x0000000000000000-mapping.dmp

          • memory/1896-54-0x0000000076181000-0x0000000076183000-memory.dmp

            Filesize

            8KB

          • memory/1896-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1896-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2024-87-0x0000000000000000-mapping.dmp