Analysis

  • max time kernel
    43s
  • 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 10:32

General

  • Target

    1bf4ca600486280d90dd60e5a52d7aca2fbb8da9cea3cedeced80499b27d754e.exe

  • Size

    603KB

  • MD5

    00d40c14b2ae7f9ea1a29cbfa3843840

  • SHA1

    5851f452fcae14c096478bee206baf98cd40060e

  • SHA256

    1bf4ca600486280d90dd60e5a52d7aca2fbb8da9cea3cedeced80499b27d754e

  • SHA512

    9d8921f2e40ccd19e118f52d81f7ba482c5787578fb1a6951dd2fbea214d3f303d6b2a42d20bf9ea3e492d2fb6b8703fa58fbe8f6e440d7ad572ef42b3dabf5f

  • SSDEEP

    12288:TIny5DYTmI+J22sTnCU+eA09cnuKmHlWa/rkvOavOhHYAZbt0KW:7UTmxJB6nC73Ecn6lb/OFOZWK

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\1bf4ca600486280d90dd60e5a52d7aca2fbb8da9cea3cedeced80499b27d754e.exe
    "C:\Users\Admin\AppData\Local\Temp\1bf4ca600486280d90dd60e5a52d7aca2fbb8da9cea3cedeced80499b27d754e.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:1672
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1224
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:956
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1644
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:624
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1792
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1908
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:584
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1220
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1344
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1324
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:824
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:564

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eacb79e1ffd7993a3aafbe75e26f78a

            SHA1

            2b2e5025d03f6d27459c7930fa7b6d244ee4620c

            SHA256

            0c43c1c601e19c195b6f6aba07cf7c90aa5ce47ff4e3a2676aafa8dc98b5a86d

            SHA512

            0c60c07ba828e357dbb8f026579ede3d42b4f3616471d8ec518f2bee3e75a78a44b4c52edc5a44b3e5b9640ab44bb57a159f1c6f0367e82e228af887e16270f8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            554ffcd79a26adcc95abf8402afc153e

            SHA1

            f05bf62cea0a23a5d67ce14d74ce2ef633c67401

            SHA256

            56de05b1d50843ceb797e0e0c855f20b80dcfa7235858e58e0267ca265b2140c

            SHA512

            0047c859ecb29dab86b5bef29d9e1de66ba1ff7c2a5476817cd2b3d3eaa5ecbd98b5fd356f2d3a8d1f84cd99d419ab8d7fe025dbbba324cad4a285c6c858584c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b1dfd6846b7f882964b267cd16f68ad7

            SHA1

            3602746de739dbf3c1b834d774705fb3f9a2b66b

            SHA256

            498fe344a6771831be9a574a0e70e01636f84eeb7f61ffcd67b48cffaa9b1a83

            SHA512

            2eb6286a0f9c83ea1c3d323045e69ce7a11d53de068fef33dc71e0b2482abab0b39cd64a8a4c416925aafa3a49fef1f4e6c4f7a683e817e2f592503afd14539b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aeddb91e2f554ccdf508195ff1fd9526

            SHA1

            3094dfae74a7db94ea5dd1c2f4882b02500a824a

            SHA256

            28ef7a9ce37b33cb27d600a69aea074bca2ddbd9af9bf5cdf9f1f22af7d6888c

            SHA512

            c1d527668d95a0d213cfe141eb8c1d70589a7fb140c0837ea289360e2f35e57248253078affa57a4791e23287a95733bfd7677c20cdf356552c5fea4a0c7a5a2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aeddb91e2f554ccdf508195ff1fd9526

            SHA1

            3094dfae74a7db94ea5dd1c2f4882b02500a824a

            SHA256

            28ef7a9ce37b33cb27d600a69aea074bca2ddbd9af9bf5cdf9f1f22af7d6888c

            SHA512

            c1d527668d95a0d213cfe141eb8c1d70589a7fb140c0837ea289360e2f35e57248253078affa57a4791e23287a95733bfd7677c20cdf356552c5fea4a0c7a5a2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            10eca07416f32cb1f417ebfc429764e8

            SHA1

            c84fb262ccd94868b53d28521e85e02bc84d61bf

            SHA256

            913b104fae3f287c1df045ecdd344817388b560658cc3c3e72544951937ed226

            SHA512

            1e53892d8e42f3b764ae108e06a419034f6aab48c28dad88519f544d8db87858a7cc9b2c1de5f2a1041c86e9f6562f4969d8561ac07281d39a34a6c3109cc432

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            10eca07416f32cb1f417ebfc429764e8

            SHA1

            c84fb262ccd94868b53d28521e85e02bc84d61bf

            SHA256

            913b104fae3f287c1df045ecdd344817388b560658cc3c3e72544951937ed226

            SHA512

            1e53892d8e42f3b764ae108e06a419034f6aab48c28dad88519f544d8db87858a7cc9b2c1de5f2a1041c86e9f6562f4969d8561ac07281d39a34a6c3109cc432

          • \Users\Admin\AppData\Local\Temp\nst16AF.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst16AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst16AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst16AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst16AF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eacb79e1ffd7993a3aafbe75e26f78a

            SHA1

            2b2e5025d03f6d27459c7930fa7b6d244ee4620c

            SHA256

            0c43c1c601e19c195b6f6aba07cf7c90aa5ce47ff4e3a2676aafa8dc98b5a86d

            SHA512

            0c60c07ba828e357dbb8f026579ede3d42b4f3616471d8ec518f2bee3e75a78a44b4c52edc5a44b3e5b9640ab44bb57a159f1c6f0367e82e228af887e16270f8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eacb79e1ffd7993a3aafbe75e26f78a

            SHA1

            2b2e5025d03f6d27459c7930fa7b6d244ee4620c

            SHA256

            0c43c1c601e19c195b6f6aba07cf7c90aa5ce47ff4e3a2676aafa8dc98b5a86d

            SHA512

            0c60c07ba828e357dbb8f026579ede3d42b4f3616471d8ec518f2bee3e75a78a44b4c52edc5a44b3e5b9640ab44bb57a159f1c6f0367e82e228af887e16270f8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7eacb79e1ffd7993a3aafbe75e26f78a

            SHA1

            2b2e5025d03f6d27459c7930fa7b6d244ee4620c

            SHA256

            0c43c1c601e19c195b6f6aba07cf7c90aa5ce47ff4e3a2676aafa8dc98b5a86d

            SHA512

            0c60c07ba828e357dbb8f026579ede3d42b4f3616471d8ec518f2bee3e75a78a44b4c52edc5a44b3e5b9640ab44bb57a159f1c6f0367e82e228af887e16270f8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            554ffcd79a26adcc95abf8402afc153e

            SHA1

            f05bf62cea0a23a5d67ce14d74ce2ef633c67401

            SHA256

            56de05b1d50843ceb797e0e0c855f20b80dcfa7235858e58e0267ca265b2140c

            SHA512

            0047c859ecb29dab86b5bef29d9e1de66ba1ff7c2a5476817cd2b3d3eaa5ecbd98b5fd356f2d3a8d1f84cd99d419ab8d7fe025dbbba324cad4a285c6c858584c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            554ffcd79a26adcc95abf8402afc153e

            SHA1

            f05bf62cea0a23a5d67ce14d74ce2ef633c67401

            SHA256

            56de05b1d50843ceb797e0e0c855f20b80dcfa7235858e58e0267ca265b2140c

            SHA512

            0047c859ecb29dab86b5bef29d9e1de66ba1ff7c2a5476817cd2b3d3eaa5ecbd98b5fd356f2d3a8d1f84cd99d419ab8d7fe025dbbba324cad4a285c6c858584c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b1dfd6846b7f882964b267cd16f68ad7

            SHA1

            3602746de739dbf3c1b834d774705fb3f9a2b66b

            SHA256

            498fe344a6771831be9a574a0e70e01636f84eeb7f61ffcd67b48cffaa9b1a83

            SHA512

            2eb6286a0f9c83ea1c3d323045e69ce7a11d53de068fef33dc71e0b2482abab0b39cd64a8a4c416925aafa3a49fef1f4e6c4f7a683e817e2f592503afd14539b

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aeddb91e2f554ccdf508195ff1fd9526

            SHA1

            3094dfae74a7db94ea5dd1c2f4882b02500a824a

            SHA256

            28ef7a9ce37b33cb27d600a69aea074bca2ddbd9af9bf5cdf9f1f22af7d6888c

            SHA512

            c1d527668d95a0d213cfe141eb8c1d70589a7fb140c0837ea289360e2f35e57248253078affa57a4791e23287a95733bfd7677c20cdf356552c5fea4a0c7a5a2

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            10eca07416f32cb1f417ebfc429764e8

            SHA1

            c84fb262ccd94868b53d28521e85e02bc84d61bf

            SHA256

            913b104fae3f287c1df045ecdd344817388b560658cc3c3e72544951937ed226

            SHA512

            1e53892d8e42f3b764ae108e06a419034f6aab48c28dad88519f544d8db87858a7cc9b2c1de5f2a1041c86e9f6562f4969d8561ac07281d39a34a6c3109cc432

          • memory/584-81-0x0000000000000000-mapping.dmp

          • memory/624-64-0x0000000000000000-mapping.dmp

          • memory/956-61-0x0000000000000000-mapping.dmp

          • memory/1220-82-0x0000000000000000-mapping.dmp

          • memory/1224-59-0x0000000000000000-mapping.dmp

          • memory/1324-88-0x0000000000000000-mapping.dmp

          • memory/1344-87-0x0000000000000000-mapping.dmp

          • memory/1644-62-0x0000000000000000-mapping.dmp

          • memory/1672-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1672-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1672-54-0x0000000075201000-0x0000000075203000-memory.dmp

            Filesize

            8KB

          • memory/1672-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1696-57-0x0000000000000000-mapping.dmp

          • memory/1792-71-0x0000000000000000-mapping.dmp

          • memory/1908-77-0x0000000000000000-mapping.dmp