Analysis

  • max time kernel
    41s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

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

General

  • Target

    dfb85b9c793529dcc71eeccafd0dfdc62af2d27ac3883200a364f3bf41590f25.exe

  • Size

    603KB

  • MD5

    52cfc71a690a7b2b917fe84c43136f26

  • SHA1

    1ff6007987dc4322eff115f6192e7ce1e18ea352

  • SHA256

    dfb85b9c793529dcc71eeccafd0dfdc62af2d27ac3883200a364f3bf41590f25

  • SHA512

    5003afa0521198a215b0faf1b5d9f8c98d1ce4fed55ee70d561d3dad88f9ce8e1bad60cd6dc6543af6716e3882f0bc56b4749e7b14f43828f4716bafb4e70ec9

  • SSDEEP

    12288:bIny5DYT7PXCt+AFvpYA4/9GoxjKdiQfwb9iIYM/+OZl:jUTrXCttHloxjjji7M5n

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\dfb85b9c793529dcc71eeccafd0dfdc62af2d27ac3883200a364f3bf41590f25.exe
    "C:\Users\Admin\AppData\Local\Temp\dfb85b9c793529dcc71eeccafd0dfdc62af2d27ac3883200a364f3bf41590f25.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:2016
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:960
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2036
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1540
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1052
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1068
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1904
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1576
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1748
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:984
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1644
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:576

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c3d84c258e6eb920b0f6ed67d9439fa4

            SHA1

            8952f8b3605ee6241da4772120eb202edec9d0d6

            SHA256

            b0adde03e116fcd22a15b757492868cfa1018cadbd7c4536aa02f82f76d19996

            SHA512

            7e83a886fa89ecf230d7b43d1ec73cd611bafeaa081ca2bb853ec8d36980ff82de88606893d0fff8a4fc73e7cd1aef89528a249bac0c6cc170d8261621e89542

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            aa7f08bdb8867008bc05c14669ba06bc

            SHA1

            0b58435cbb2fd64db64cee34b62a1b0e85c72d0d

            SHA256

            ae328fecef14fdc0a3f71647bbbcb9efbf37e997738a5772f370ee8dc81a5bf4

            SHA512

            c52a1028c14fe8f79cea804f6546b76037355b9efe09ea0124f4669747adda3982efc80a40f3b42fef20732cdcc59c1459301e577d47a0d7009869097c37db9b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0fe4e9cfabbecff8c3987fd3136ad2ed

            SHA1

            92d071d7ed68af227a5a66496483716c8c882916

            SHA256

            87fe8af0de1f7b9cf67205afb217b0913f51d4621cfd97ac60b5b6c0863f28ef

            SHA512

            c7de03c792341302b8e291802b4d6182ea7528ff707d1c7ce4fa8556e9caf4e14aec1aa6ea66d814d466e457f5ae08160c372b4860f0eb0ec2fff2af5dd20ec7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            329e5fb0324976f79f7a6fca499a5b1b

            SHA1

            a6ce11a9461c6e9b8067c91869abdbaa355843ce

            SHA256

            de700dfe7b12f0f5c6fc3dbb5d78da885b92732f5042c1a456a96929f8b15688

            SHA512

            f8060140c7eb5ad5c0715d4f5dec1769340306bc69668665e35ee7fdbf84246fed6fe385bb899ec4ceb7e1d9017fe49abfa4062c278b6bb81f2faf8b679f0182

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            329e5fb0324976f79f7a6fca499a5b1b

            SHA1

            a6ce11a9461c6e9b8067c91869abdbaa355843ce

            SHA256

            de700dfe7b12f0f5c6fc3dbb5d78da885b92732f5042c1a456a96929f8b15688

            SHA512

            f8060140c7eb5ad5c0715d4f5dec1769340306bc69668665e35ee7fdbf84246fed6fe385bb899ec4ceb7e1d9017fe49abfa4062c278b6bb81f2faf8b679f0182

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d6c9a703892ca809d36c8fe52ec8861

            SHA1

            08aad4343c0f3587ab0144341dc2ff8677525b5b

            SHA256

            db88696fe17684178e44addbe3980c1bd2f4ae97b48693ed1c48960625b01d50

            SHA512

            1547428957de12d84b73d0a1d1633552a66f0f0d825203c1d1706c845ad7278fb34c8733a8f38bb366cfe253d176853d6a86df8d2fbde4a70df1f32cc70c28cc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d6c9a703892ca809d36c8fe52ec8861

            SHA1

            08aad4343c0f3587ab0144341dc2ff8677525b5b

            SHA256

            db88696fe17684178e44addbe3980c1bd2f4ae97b48693ed1c48960625b01d50

            SHA512

            1547428957de12d84b73d0a1d1633552a66f0f0d825203c1d1706c845ad7278fb34c8733a8f38bb366cfe253d176853d6a86df8d2fbde4a70df1f32cc70c28cc

          • \Users\Admin\AppData\Local\Temp\nsyFFF4.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyFFF4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFFF4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFFF4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFFF4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c3d84c258e6eb920b0f6ed67d9439fa4

            SHA1

            8952f8b3605ee6241da4772120eb202edec9d0d6

            SHA256

            b0adde03e116fcd22a15b757492868cfa1018cadbd7c4536aa02f82f76d19996

            SHA512

            7e83a886fa89ecf230d7b43d1ec73cd611bafeaa081ca2bb853ec8d36980ff82de88606893d0fff8a4fc73e7cd1aef89528a249bac0c6cc170d8261621e89542

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c3d84c258e6eb920b0f6ed67d9439fa4

            SHA1

            8952f8b3605ee6241da4772120eb202edec9d0d6

            SHA256

            b0adde03e116fcd22a15b757492868cfa1018cadbd7c4536aa02f82f76d19996

            SHA512

            7e83a886fa89ecf230d7b43d1ec73cd611bafeaa081ca2bb853ec8d36980ff82de88606893d0fff8a4fc73e7cd1aef89528a249bac0c6cc170d8261621e89542

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c3d84c258e6eb920b0f6ed67d9439fa4

            SHA1

            8952f8b3605ee6241da4772120eb202edec9d0d6

            SHA256

            b0adde03e116fcd22a15b757492868cfa1018cadbd7c4536aa02f82f76d19996

            SHA512

            7e83a886fa89ecf230d7b43d1ec73cd611bafeaa081ca2bb853ec8d36980ff82de88606893d0fff8a4fc73e7cd1aef89528a249bac0c6cc170d8261621e89542

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            aa7f08bdb8867008bc05c14669ba06bc

            SHA1

            0b58435cbb2fd64db64cee34b62a1b0e85c72d0d

            SHA256

            ae328fecef14fdc0a3f71647bbbcb9efbf37e997738a5772f370ee8dc81a5bf4

            SHA512

            c52a1028c14fe8f79cea804f6546b76037355b9efe09ea0124f4669747adda3982efc80a40f3b42fef20732cdcc59c1459301e577d47a0d7009869097c37db9b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            aa7f08bdb8867008bc05c14669ba06bc

            SHA1

            0b58435cbb2fd64db64cee34b62a1b0e85c72d0d

            SHA256

            ae328fecef14fdc0a3f71647bbbcb9efbf37e997738a5772f370ee8dc81a5bf4

            SHA512

            c52a1028c14fe8f79cea804f6546b76037355b9efe09ea0124f4669747adda3982efc80a40f3b42fef20732cdcc59c1459301e577d47a0d7009869097c37db9b

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0fe4e9cfabbecff8c3987fd3136ad2ed

            SHA1

            92d071d7ed68af227a5a66496483716c8c882916

            SHA256

            87fe8af0de1f7b9cf67205afb217b0913f51d4621cfd97ac60b5b6c0863f28ef

            SHA512

            c7de03c792341302b8e291802b4d6182ea7528ff707d1c7ce4fa8556e9caf4e14aec1aa6ea66d814d466e457f5ae08160c372b4860f0eb0ec2fff2af5dd20ec7

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            329e5fb0324976f79f7a6fca499a5b1b

            SHA1

            a6ce11a9461c6e9b8067c91869abdbaa355843ce

            SHA256

            de700dfe7b12f0f5c6fc3dbb5d78da885b92732f5042c1a456a96929f8b15688

            SHA512

            f8060140c7eb5ad5c0715d4f5dec1769340306bc69668665e35ee7fdbf84246fed6fe385bb899ec4ceb7e1d9017fe49abfa4062c278b6bb81f2faf8b679f0182

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d6c9a703892ca809d36c8fe52ec8861

            SHA1

            08aad4343c0f3587ab0144341dc2ff8677525b5b

            SHA256

            db88696fe17684178e44addbe3980c1bd2f4ae97b48693ed1c48960625b01d50

            SHA512

            1547428957de12d84b73d0a1d1633552a66f0f0d825203c1d1706c845ad7278fb34c8733a8f38bb366cfe253d176853d6a86df8d2fbde4a70df1f32cc70c28cc

          • memory/960-58-0x0000000000000000-mapping.dmp

          • memory/984-87-0x0000000000000000-mapping.dmp

          • memory/1052-70-0x0000000000000000-mapping.dmp

          • memory/1068-76-0x0000000000000000-mapping.dmp

          • memory/1204-57-0x0000000000000000-mapping.dmp

          • memory/1256-61-0x0000000000000000-mapping.dmp

          • memory/1540-64-0x0000000000000000-mapping.dmp

          • memory/1576-81-0x0000000000000000-mapping.dmp

          • memory/1748-86-0x0000000000000000-mapping.dmp

          • memory/1904-80-0x0000000000000000-mapping.dmp

          • memory/2016-54-0x0000000075661000-0x0000000075663000-memory.dmp

            Filesize

            8KB

          • memory/2016-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2016-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2036-62-0x0000000000000000-mapping.dmp