Analysis

  • max time kernel
    43s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:51

General

  • Target

    d4ac2f3949c2884d811e614b7062968e2e85bcf063e3345716aa0f2a5b442b38.exe

  • Size

    445KB

  • MD5

    7ffed99a92c60bcf354c82af6bb642e8

  • SHA1

    8a3453d47f00b81760513a68e24d48282a927401

  • SHA256

    d4ac2f3949c2884d811e614b7062968e2e85bcf063e3345716aa0f2a5b442b38

  • SHA512

    b65f0aaa7e496de3eb3ebc5a01c5950f883ea402912ff1e9d1e7125c67a21f86a1476c8aa75ec27eb4f8d918b589bdd7b37e8b52e76ef7ee5c4e1f1d5dea6e00

  • SSDEEP

    12288:AP+S3rxSDDc9GVrW4kfks9V/lbGgUyiGTL/v9JzcY:AP+SbYHJVrW4TUV9b/+Uv3YY

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\d4ac2f3949c2884d811e614b7062968e2e85bcf063e3345716aa0f2a5b442b38.exe
    "C:\Users\Admin\AppData\Local\Temp\d4ac2f3949c2884d811e614b7062968e2e85bcf063e3345716aa0f2a5b442b38.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:1584
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:552
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1620
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:516
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1684
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1064
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1280
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1296
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:316
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1380
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1092
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1364

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6095ce5297642db100d075e868eac8c4

            SHA1

            4d2b6ec487aab91765923003f30bf6d403f72df8

            SHA256

            4a80976682c95d5895055f6c7ce202fb635b16242f1d5bb40bae70ce2d72e2e2

            SHA512

            196a4bf17debdc856b986da79b0a7219eb10de72071bf26e1cd78c472b81d4c7903cca88df6d456afb129a53e6277d4dd089d56585d62d79110a8151c7e466df

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            f065976e98b686dc97349b64462a1829

            SHA1

            a4c351f4de023d392ecec1aece359c2e385f522a

            SHA256

            4b6b23842056063dfa64d0ffd36d4459224c3a28b637d76d901e5bea464db220

            SHA512

            ec7da8d7acbad993f039c827882936e74e4f35a0890cddbbbf6f655a60a4498f4f35a9775c952c4974effaee4eeaea54780aaabe75b918eef5b87b741b48c5f6

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            715bbf60b194da0b4cb60979cf870135

            SHA1

            1873e51bc48009a51b40ab1948b8b1511107b3a7

            SHA256

            df2d4627331b04629c15a5d30f9ae3c99ae71b552fc14517f516cb2f45e7d230

            SHA512

            b1e01b0a4290625955ec67966fce78f67b3a0f6041437b28c9e737b2a8ab3b5a4ea7b123fcd01e96f0e1e183afa0d6daf259be3f33f5b3b442ae5d73df48f109

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            24f5fb522ec7eb072c8b32dc8eccfa75

            SHA1

            43c0c9bfa70ea46dab4e3ac362caf2f1cde67032

            SHA256

            f578826e86402e0faf069f40afb34aba788856727fbf30bfdfb6133ec46cdfaa

            SHA512

            a94db4bd04be6ac5f9a65cd086901bcff9f4c00151418052b059af8ba0ff6fac5019b68421b1eb72cb02b9d673d01cfaae50d4517efb5c4844282e307a537595

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            24f5fb522ec7eb072c8b32dc8eccfa75

            SHA1

            43c0c9bfa70ea46dab4e3ac362caf2f1cde67032

            SHA256

            f578826e86402e0faf069f40afb34aba788856727fbf30bfdfb6133ec46cdfaa

            SHA512

            a94db4bd04be6ac5f9a65cd086901bcff9f4c00151418052b059af8ba0ff6fac5019b68421b1eb72cb02b9d673d01cfaae50d4517efb5c4844282e307a537595

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            61071887c687f87eaf8ced0d200339e2

            SHA1

            5e046ee36a0641d24ed4629439e979b10dc4c1f1

            SHA256

            9c15f4a365e773dffc805dc8d835a5bb4a47e2142f9c30f3e4359d3dd495c924

            SHA512

            a63f29f1cc8789f4daaae783fcc7aaf8380925bf70690eb43b72e4d57d90a90f1329ab1db7f6f26e17f8b13b7bd609de9084e91a7eaf5ff53f856762c60cc6d8

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            61071887c687f87eaf8ced0d200339e2

            SHA1

            5e046ee36a0641d24ed4629439e979b10dc4c1f1

            SHA256

            9c15f4a365e773dffc805dc8d835a5bb4a47e2142f9c30f3e4359d3dd495c924

            SHA512

            a63f29f1cc8789f4daaae783fcc7aaf8380925bf70690eb43b72e4d57d90a90f1329ab1db7f6f26e17f8b13b7bd609de9084e91a7eaf5ff53f856762c60cc6d8

          • \Users\Admin\AppData\Local\Temp\nsj1A19.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj1A19.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1A19.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1A19.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1A19.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6095ce5297642db100d075e868eac8c4

            SHA1

            4d2b6ec487aab91765923003f30bf6d403f72df8

            SHA256

            4a80976682c95d5895055f6c7ce202fb635b16242f1d5bb40bae70ce2d72e2e2

            SHA512

            196a4bf17debdc856b986da79b0a7219eb10de72071bf26e1cd78c472b81d4c7903cca88df6d456afb129a53e6277d4dd089d56585d62d79110a8151c7e466df

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6095ce5297642db100d075e868eac8c4

            SHA1

            4d2b6ec487aab91765923003f30bf6d403f72df8

            SHA256

            4a80976682c95d5895055f6c7ce202fb635b16242f1d5bb40bae70ce2d72e2e2

            SHA512

            196a4bf17debdc856b986da79b0a7219eb10de72071bf26e1cd78c472b81d4c7903cca88df6d456afb129a53e6277d4dd089d56585d62d79110a8151c7e466df

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6095ce5297642db100d075e868eac8c4

            SHA1

            4d2b6ec487aab91765923003f30bf6d403f72df8

            SHA256

            4a80976682c95d5895055f6c7ce202fb635b16242f1d5bb40bae70ce2d72e2e2

            SHA512

            196a4bf17debdc856b986da79b0a7219eb10de72071bf26e1cd78c472b81d4c7903cca88df6d456afb129a53e6277d4dd089d56585d62d79110a8151c7e466df

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            f065976e98b686dc97349b64462a1829

            SHA1

            a4c351f4de023d392ecec1aece359c2e385f522a

            SHA256

            4b6b23842056063dfa64d0ffd36d4459224c3a28b637d76d901e5bea464db220

            SHA512

            ec7da8d7acbad993f039c827882936e74e4f35a0890cddbbbf6f655a60a4498f4f35a9775c952c4974effaee4eeaea54780aaabe75b918eef5b87b741b48c5f6

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            f065976e98b686dc97349b64462a1829

            SHA1

            a4c351f4de023d392ecec1aece359c2e385f522a

            SHA256

            4b6b23842056063dfa64d0ffd36d4459224c3a28b637d76d901e5bea464db220

            SHA512

            ec7da8d7acbad993f039c827882936e74e4f35a0890cddbbbf6f655a60a4498f4f35a9775c952c4974effaee4eeaea54780aaabe75b918eef5b87b741b48c5f6

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            715bbf60b194da0b4cb60979cf870135

            SHA1

            1873e51bc48009a51b40ab1948b8b1511107b3a7

            SHA256

            df2d4627331b04629c15a5d30f9ae3c99ae71b552fc14517f516cb2f45e7d230

            SHA512

            b1e01b0a4290625955ec67966fce78f67b3a0f6041437b28c9e737b2a8ab3b5a4ea7b123fcd01e96f0e1e183afa0d6daf259be3f33f5b3b442ae5d73df48f109

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            24f5fb522ec7eb072c8b32dc8eccfa75

            SHA1

            43c0c9bfa70ea46dab4e3ac362caf2f1cde67032

            SHA256

            f578826e86402e0faf069f40afb34aba788856727fbf30bfdfb6133ec46cdfaa

            SHA512

            a94db4bd04be6ac5f9a65cd086901bcff9f4c00151418052b059af8ba0ff6fac5019b68421b1eb72cb02b9d673d01cfaae50d4517efb5c4844282e307a537595

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            61071887c687f87eaf8ced0d200339e2

            SHA1

            5e046ee36a0641d24ed4629439e979b10dc4c1f1

            SHA256

            9c15f4a365e773dffc805dc8d835a5bb4a47e2142f9c30f3e4359d3dd495c924

            SHA512

            a63f29f1cc8789f4daaae783fcc7aaf8380925bf70690eb43b72e4d57d90a90f1329ab1db7f6f26e17f8b13b7bd609de9084e91a7eaf5ff53f856762c60cc6d8

          • memory/316-85-0x0000000000000000-mapping.dmp
          • memory/516-63-0x0000000000000000-mapping.dmp
          • memory/552-58-0x0000000000000000-mapping.dmp
          • memory/584-60-0x0000000000000000-mapping.dmp
          • memory/1064-75-0x0000000000000000-mapping.dmp
          • memory/1280-79-0x0000000000000000-mapping.dmp
          • memory/1296-80-0x0000000000000000-mapping.dmp
          • memory/1380-86-0x0000000000000000-mapping.dmp
          • memory/1584-57-0x0000000000000000-mapping.dmp
          • memory/1620-61-0x0000000000000000-mapping.dmp
          • memory/1672-54-0x0000000075111000-0x0000000075113000-memory.dmp
            Filesize

            8KB

          • memory/1684-69-0x0000000000000000-mapping.dmp