Analysis

  • max time kernel
    153s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:28

General

  • Target

    40a73829880a4b5a39eac4861fb3ef171fd67254b49f1dbb112c48ea674c74d1.exe

  • Size

    601KB

  • MD5

    ca901021f29d72807019eb9d934767cf

  • SHA1

    be824d4c50453de541ad2192439a4ebe22d10be0

  • SHA256

    40a73829880a4b5a39eac4861fb3ef171fd67254b49f1dbb112c48ea674c74d1

  • SHA512

    648a9d43bfd9fd2dfac76b3038e250ca4a92c8866a4d1fb192bbe1e8fb5d89beb3f5cf10432b8f130e07fffb4c210f2c630215a91e1dbf8293a7f0b3db11fc34

  • SSDEEP

    12288:BIny5DYTamrGgTTen46eT7cRpPY2/h0k8zHYYiyq3wbjfc8Z:9UTamrG2THymkuHdfZ

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\40a73829880a4b5a39eac4861fb3ef171fd67254b49f1dbb112c48ea674c74d1.exe
    "C:\Users\Admin\AppData\Local\Temp\40a73829880a4b5a39eac4861fb3ef171fd67254b49f1dbb112c48ea674c74d1.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:3436
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3644
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:5052
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4980
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4924
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4296
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4368
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2600
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1628
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1572
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3340
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3692
          • 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:2508
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:112

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d5bd87d5f6030e01822e1bc6cd16b253

            SHA1

            f9cc9e4a7b338a5c41c1b5029c36208e4ff7650c

            SHA256

            501a56169194da5d78c67af61c32d29bbc1ecfedcb5475e1b327bbeaf32cc05a

            SHA512

            61804ae79b5bbe4246609c119d39b93418f505d00ff80cb7b53fc1b740cc00c1b6a0ee193946d8392d5bf7308dd05d95510d54363208a4759d3715720c53877c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d5bd87d5f6030e01822e1bc6cd16b253

            SHA1

            f9cc9e4a7b338a5c41c1b5029c36208e4ff7650c

            SHA256

            501a56169194da5d78c67af61c32d29bbc1ecfedcb5475e1b327bbeaf32cc05a

            SHA512

            61804ae79b5bbe4246609c119d39b93418f505d00ff80cb7b53fc1b740cc00c1b6a0ee193946d8392d5bf7308dd05d95510d54363208a4759d3715720c53877c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d5bd87d5f6030e01822e1bc6cd16b253

            SHA1

            f9cc9e4a7b338a5c41c1b5029c36208e4ff7650c

            SHA256

            501a56169194da5d78c67af61c32d29bbc1ecfedcb5475e1b327bbeaf32cc05a

            SHA512

            61804ae79b5bbe4246609c119d39b93418f505d00ff80cb7b53fc1b740cc00c1b6a0ee193946d8392d5bf7308dd05d95510d54363208a4759d3715720c53877c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d5bd87d5f6030e01822e1bc6cd16b253

            SHA1

            f9cc9e4a7b338a5c41c1b5029c36208e4ff7650c

            SHA256

            501a56169194da5d78c67af61c32d29bbc1ecfedcb5475e1b327bbeaf32cc05a

            SHA512

            61804ae79b5bbe4246609c119d39b93418f505d00ff80cb7b53fc1b740cc00c1b6a0ee193946d8392d5bf7308dd05d95510d54363208a4759d3715720c53877c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ddd30f69b8cce3acb15eb81015a9fc99

            SHA1

            06f774c809847241a860d55716c78b013296f877

            SHA256

            de21ee371d92590988912a014e41c4e79b5d47966b91a35f042156b1649dcdae

            SHA512

            6e90b1e750cbd9e040fb91542c1362eeb995076110ce343c64c368401e0315769d113200a56efe7b185dd276b3325cd34a49995784366666cff9f4af368bf4c9

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ddd30f69b8cce3acb15eb81015a9fc99

            SHA1

            06f774c809847241a860d55716c78b013296f877

            SHA256

            de21ee371d92590988912a014e41c4e79b5d47966b91a35f042156b1649dcdae

            SHA512

            6e90b1e750cbd9e040fb91542c1362eeb995076110ce343c64c368401e0315769d113200a56efe7b185dd276b3325cd34a49995784366666cff9f4af368bf4c9

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ddd30f69b8cce3acb15eb81015a9fc99

            SHA1

            06f774c809847241a860d55716c78b013296f877

            SHA256

            de21ee371d92590988912a014e41c4e79b5d47966b91a35f042156b1649dcdae

            SHA512

            6e90b1e750cbd9e040fb91542c1362eeb995076110ce343c64c368401e0315769d113200a56efe7b185dd276b3325cd34a49995784366666cff9f4af368bf4c9

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2e221a95dbefe0548cec7922463405bb

            SHA1

            9c7d913db931c0cfc9ba9a6458b1ed2c658dce6e

            SHA256

            83e26ccf9e8f837ee14ba296833a98fe4c1a1448914739815533721b0edafe8a

            SHA512

            637ebff7749c14de5103fd26b3137e5731be0d09605d73e9742b3a4112e2f641c93294a923de752722b58b991bbcf2e79338e8df492e7552f9d6e7ec4cbed95d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2e221a95dbefe0548cec7922463405bb

            SHA1

            9c7d913db931c0cfc9ba9a6458b1ed2c658dce6e

            SHA256

            83e26ccf9e8f837ee14ba296833a98fe4c1a1448914739815533721b0edafe8a

            SHA512

            637ebff7749c14de5103fd26b3137e5731be0d09605d73e9742b3a4112e2f641c93294a923de752722b58b991bbcf2e79338e8df492e7552f9d6e7ec4cbed95d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5c7f3f1b1fad2d9c79ddc712efd043a3

            SHA1

            9034df2aabce799facd22c20cf9e8b962314e283

            SHA256

            f96114d39299a632250e67ed4c927f9ea44162688f7f46beb3a0d606ed215aa1

            SHA512

            3fedb92205cde5456c329a4207a568047bcc78010f50bddbad1a7343816f81c091ed854f847f33ef3d72820a8778afd8c1d403267169d56134186da415a5182e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5c7f3f1b1fad2d9c79ddc712efd043a3

            SHA1

            9034df2aabce799facd22c20cf9e8b962314e283

            SHA256

            f96114d39299a632250e67ed4c927f9ea44162688f7f46beb3a0d606ed215aa1

            SHA512

            3fedb92205cde5456c329a4207a568047bcc78010f50bddbad1a7343816f81c091ed854f847f33ef3d72820a8778afd8c1d403267169d56134186da415a5182e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5c7f3f1b1fad2d9c79ddc712efd043a3

            SHA1

            9034df2aabce799facd22c20cf9e8b962314e283

            SHA256

            f96114d39299a632250e67ed4c927f9ea44162688f7f46beb3a0d606ed215aa1

            SHA512

            3fedb92205cde5456c329a4207a568047bcc78010f50bddbad1a7343816f81c091ed854f847f33ef3d72820a8778afd8c1d403267169d56134186da415a5182e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            13b56c7e4a6a614fbde1929a2980c60c

            SHA1

            a303b435f2ce44c2cf865421347c28fa4b27afdc

            SHA256

            dc54cc9065f7da89b77d0d2ec692e280dce480ec3d840cfc4f5d31d504f7704a

            SHA512

            edda6a3171bd05e6cf04b9589dcdba22cb28c4c1338f8ac15ac58da01147466f11a3f69be731520bfc85b777c85ddce02f6459c55f86dc77e543b738ad6e3f06

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            13b56c7e4a6a614fbde1929a2980c60c

            SHA1

            a303b435f2ce44c2cf865421347c28fa4b27afdc

            SHA256

            dc54cc9065f7da89b77d0d2ec692e280dce480ec3d840cfc4f5d31d504f7704a

            SHA512

            edda6a3171bd05e6cf04b9589dcdba22cb28c4c1338f8ac15ac58da01147466f11a3f69be731520bfc85b777c85ddce02f6459c55f86dc77e543b738ad6e3f06

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            13b56c7e4a6a614fbde1929a2980c60c

            SHA1

            a303b435f2ce44c2cf865421347c28fa4b27afdc

            SHA256

            dc54cc9065f7da89b77d0d2ec692e280dce480ec3d840cfc4f5d31d504f7704a

            SHA512

            edda6a3171bd05e6cf04b9589dcdba22cb28c4c1338f8ac15ac58da01147466f11a3f69be731520bfc85b777c85ddce02f6459c55f86dc77e543b738ad6e3f06

          • memory/1572-159-0x0000000000000000-mapping.dmp

          • memory/1628-158-0x0000000000000000-mapping.dmp

          • memory/2600-153-0x0000000000000000-mapping.dmp

          • memory/3340-165-0x0000000000000000-mapping.dmp

          • memory/3436-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3436-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3644-136-0x0000000000000000-mapping.dmp

          • memory/3692-166-0x0000000000000000-mapping.dmp

          • memory/4296-142-0x0000000000000000-mapping.dmp

          • memory/4368-147-0x0000000000000000-mapping.dmp

          • memory/4924-141-0x0000000000000000-mapping.dmp

          • memory/4980-140-0x0000000000000000-mapping.dmp

          • memory/5052-137-0x0000000000000000-mapping.dmp