Analysis

  • max time kernel
    26s
  • max time network
    46s
  • 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

    3be9bf94f5d6fe13447e8d442ac8b98c4235d1b0ad1224b094e5f026db41cec6.exe

  • Size

    601KB

  • MD5

    d1cb5996dd5524a10ff346626be38d2c

  • SHA1

    5719424433e713dbec71b1e21b4cdde75f7e24ee

  • SHA256

    3be9bf94f5d6fe13447e8d442ac8b98c4235d1b0ad1224b094e5f026db41cec6

  • SHA512

    524bb8017c0c464cd84eadb0427ef42a608a8f54e8aa62675f230b6deae18395b21a7b4c6d7b18701e1df26d554e1afa74809b6c23fa97ebf02fda2f354d426f

  • SSDEEP

    12288:cIny5DYTDivcCy4i9rUSM8ZdfSXhuknmiUhEbmxlOJTHML1:6UTDiC4i9wSJdfqPbDolOJTsL1

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\3be9bf94f5d6fe13447e8d442ac8b98c4235d1b0ad1224b094e5f026db41cec6.exe
    "C:\Users\Admin\AppData\Local\Temp\3be9bf94f5d6fe13447e8d442ac8b98c4235d1b0ad1224b094e5f026db41cec6.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:1848
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1936
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1320
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2024
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1972
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1252
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:824
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1632
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:616
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1408
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1100
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1236
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1312

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c8d2a14b1c8147274e78c6b9849db1a6

            SHA1

            3d9a8625c8697613deb44fe85afb5d8a51663e8d

            SHA256

            b6b78f333bfe1770c137880cc5554b21542f7a56692352c8861b2aa234ad32b3

            SHA512

            b69431a35b8cb370d4e0581256fd18cf3369bbc12d470ab5484e7788d6f793bf1556f49cba719e824d12a9a298ca9fd6decbab12e1ffbffbd6a069268b199eda

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6c5fc369612231c72b1601c3481c31ec

            SHA1

            bcb5bc40f41ff6d12607727cf03c200db03405e0

            SHA256

            a6d21f6cfcdff5e1ce6c05163f08127201d670568523b20b3461378a5b30ae5b

            SHA512

            e6c40d3d735e5a91a319fb40e1720d054c627073cca10eceb6bb55f4c52a32748b4b056b8817166ca93596c4cc4e64db5df4226a01c55fc37aa6258272303878

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            eeb5d81143c9b1eec3d150e6bf450035

            SHA1

            f54eeacbd720cab5894fb50925f7878dee230979

            SHA256

            e3d020cd2ba217a608cea790541477361af5ad2825704e4d390b2f04255a60e3

            SHA512

            7cbd5282d4258eecd5ce7f80349cf389d40e9c24ddaed43696c28d041e48b51688d4ba88799b7e01b5e51686b9e79f52adf097d5354212bd7e4d086211d71a85

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ec071a8800c8f6c7d412f123e95debca

            SHA1

            4f1783a9a8a0d1f37b66a0e57ff9c15e7bf1f355

            SHA256

            7acabc10a012dedb3fd018c0d4dac4605e8e6c68837fbe83b23c7824a1139f5a

            SHA512

            d4e37e9b1ccf4ce266d41092b5ec37af43c2f8fc641dba872370734a49cbe974ce3521ec8ce738a899bfd2bb3eadb20f18477f169f32b070148edabdad0f8377

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ec071a8800c8f6c7d412f123e95debca

            SHA1

            4f1783a9a8a0d1f37b66a0e57ff9c15e7bf1f355

            SHA256

            7acabc10a012dedb3fd018c0d4dac4605e8e6c68837fbe83b23c7824a1139f5a

            SHA512

            d4e37e9b1ccf4ce266d41092b5ec37af43c2f8fc641dba872370734a49cbe974ce3521ec8ce738a899bfd2bb3eadb20f18477f169f32b070148edabdad0f8377

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            de113b33ceeeaa80697d3135a6e477b0

            SHA1

            da6f0b176f776e939442ff0a28bab1b20a917462

            SHA256

            274f570678e8b30517f51065c74c86019f10c2e6c42bfe9835041a656cda65ea

            SHA512

            0b005433bc1fcbb49b92181df529660a04d5edbf0039adf944899707974103a375aacef78512e890bb4a9a7555313d49183fc9b4724385883e60c05aec412b55

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            de113b33ceeeaa80697d3135a6e477b0

            SHA1

            da6f0b176f776e939442ff0a28bab1b20a917462

            SHA256

            274f570678e8b30517f51065c74c86019f10c2e6c42bfe9835041a656cda65ea

            SHA512

            0b005433bc1fcbb49b92181df529660a04d5edbf0039adf944899707974103a375aacef78512e890bb4a9a7555313d49183fc9b4724385883e60c05aec412b55

          • \Users\Admin\AppData\Local\Temp\nst4109.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst4109.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4109.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4109.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4109.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c8d2a14b1c8147274e78c6b9849db1a6

            SHA1

            3d9a8625c8697613deb44fe85afb5d8a51663e8d

            SHA256

            b6b78f333bfe1770c137880cc5554b21542f7a56692352c8861b2aa234ad32b3

            SHA512

            b69431a35b8cb370d4e0581256fd18cf3369bbc12d470ab5484e7788d6f793bf1556f49cba719e824d12a9a298ca9fd6decbab12e1ffbffbd6a069268b199eda

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c8d2a14b1c8147274e78c6b9849db1a6

            SHA1

            3d9a8625c8697613deb44fe85afb5d8a51663e8d

            SHA256

            b6b78f333bfe1770c137880cc5554b21542f7a56692352c8861b2aa234ad32b3

            SHA512

            b69431a35b8cb370d4e0581256fd18cf3369bbc12d470ab5484e7788d6f793bf1556f49cba719e824d12a9a298ca9fd6decbab12e1ffbffbd6a069268b199eda

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c8d2a14b1c8147274e78c6b9849db1a6

            SHA1

            3d9a8625c8697613deb44fe85afb5d8a51663e8d

            SHA256

            b6b78f333bfe1770c137880cc5554b21542f7a56692352c8861b2aa234ad32b3

            SHA512

            b69431a35b8cb370d4e0581256fd18cf3369bbc12d470ab5484e7788d6f793bf1556f49cba719e824d12a9a298ca9fd6decbab12e1ffbffbd6a069268b199eda

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6c5fc369612231c72b1601c3481c31ec

            SHA1

            bcb5bc40f41ff6d12607727cf03c200db03405e0

            SHA256

            a6d21f6cfcdff5e1ce6c05163f08127201d670568523b20b3461378a5b30ae5b

            SHA512

            e6c40d3d735e5a91a319fb40e1720d054c627073cca10eceb6bb55f4c52a32748b4b056b8817166ca93596c4cc4e64db5df4226a01c55fc37aa6258272303878

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6c5fc369612231c72b1601c3481c31ec

            SHA1

            bcb5bc40f41ff6d12607727cf03c200db03405e0

            SHA256

            a6d21f6cfcdff5e1ce6c05163f08127201d670568523b20b3461378a5b30ae5b

            SHA512

            e6c40d3d735e5a91a319fb40e1720d054c627073cca10eceb6bb55f4c52a32748b4b056b8817166ca93596c4cc4e64db5df4226a01c55fc37aa6258272303878

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            eeb5d81143c9b1eec3d150e6bf450035

            SHA1

            f54eeacbd720cab5894fb50925f7878dee230979

            SHA256

            e3d020cd2ba217a608cea790541477361af5ad2825704e4d390b2f04255a60e3

            SHA512

            7cbd5282d4258eecd5ce7f80349cf389d40e9c24ddaed43696c28d041e48b51688d4ba88799b7e01b5e51686b9e79f52adf097d5354212bd7e4d086211d71a85

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ec071a8800c8f6c7d412f123e95debca

            SHA1

            4f1783a9a8a0d1f37b66a0e57ff9c15e7bf1f355

            SHA256

            7acabc10a012dedb3fd018c0d4dac4605e8e6c68837fbe83b23c7824a1139f5a

            SHA512

            d4e37e9b1ccf4ce266d41092b5ec37af43c2f8fc641dba872370734a49cbe974ce3521ec8ce738a899bfd2bb3eadb20f18477f169f32b070148edabdad0f8377

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            de113b33ceeeaa80697d3135a6e477b0

            SHA1

            da6f0b176f776e939442ff0a28bab1b20a917462

            SHA256

            274f570678e8b30517f51065c74c86019f10c2e6c42bfe9835041a656cda65ea

            SHA512

            0b005433bc1fcbb49b92181df529660a04d5edbf0039adf944899707974103a375aacef78512e890bb4a9a7555313d49183fc9b4724385883e60c05aec412b55

          • memory/616-81-0x0000000000000000-mapping.dmp

          • memory/824-76-0x0000000000000000-mapping.dmp

          • memory/1100-87-0x0000000000000000-mapping.dmp

          • memory/1252-70-0x0000000000000000-mapping.dmp

          • memory/1320-58-0x0000000000000000-mapping.dmp

          • memory/1408-86-0x0000000000000000-mapping.dmp

          • memory/1632-80-0x0000000000000000-mapping.dmp

          • memory/1848-54-0x0000000075241000-0x0000000075243000-memory.dmp

            Filesize

            8KB

          • memory/1848-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1848-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1936-57-0x0000000000000000-mapping.dmp

          • memory/1972-64-0x0000000000000000-mapping.dmp

          • memory/2024-62-0x0000000000000000-mapping.dmp

          • memory/2028-61-0x0000000000000000-mapping.dmp