Analysis

  • max time kernel
    65s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:58

General

  • Target

    304c6040bef264188218ba3d4fd27f22848b0b1be4a1036f4b707b56c334513c.exe

  • Size

    445KB

  • MD5

    fb2fe3c582b42729a84d5005d426b50b

  • SHA1

    22059d75dcc208d895dd50f7cd928d3f222bc6bd

  • SHA256

    304c6040bef264188218ba3d4fd27f22848b0b1be4a1036f4b707b56c334513c

  • SHA512

    29fd2f9f1b73ad9667761c9d0f31a244bc7c335949a1ee41f57e2ced11441f586c839f373fc5c9069fdc4c687d8036cfa6039e878241f82685a00ba1b9f79d24

  • SSDEEP

    6144:Xzf52LZeHCEZJ2y7l7djgkwoFZrM8X4z/fVeOwuPgeDs9yf0olc3kVHa0VwMitle:FQUC0JzriAZrEDkFJAsolchMjJp

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\304c6040bef264188218ba3d4fd27f22848b0b1be4a1036f4b707b56c334513c.exe
    "C:\Users\Admin\AppData\Local\Temp\304c6040bef264188218ba3d4fd27f22848b0b1be4a1036f4b707b56c334513c.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:884
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:472
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:944
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1924
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1788
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1160
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1912
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1844
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1428
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1672
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1896
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:296
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2036

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c5952c7f720b0021b797d942cf39182e

            SHA1

            19d04edf17c451c1db6ffc24afe295819bde19bf

            SHA256

            34a141e3c098e6efd611adf12b28c38a4f5ac7b31ea55954229f2e7957455597

            SHA512

            b0424e12a91bb28157d380959b89c09d2deff733ca1d6a76c735c18279b1f2e20a856bdf581c1b2ce603efd4521bca6d8b4d79cbcf355c91f452c3bcd1d9793b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5687ac0a2643c403bff7ed8a5dc901a1

            SHA1

            50fc90a47c578fa9797a6ea158d29e8ea9335402

            SHA256

            6520a6210e0470033383251c71eb62ac3d13021a47d154f359425f1c6c05e9ad

            SHA512

            9ca2e085f78f725f7c0e21dd4e82402de33c1223d72a592a6f5f27e38eec4d95b284ce867644dd446a90492624f33b6cb750cd931788a539a64cef849ca893b7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4083f709f18c172ad23c664e0087e315

            SHA1

            967cac958b7cb800f2b50f62729a0fe2b485b05d

            SHA256

            e82d4336e7aa79123c36c8a08b1c296ed776841ad3e8888b2aac5c036f5d5456

            SHA512

            b9a39544b55e61c4af23afa4c596ffabcf8903618d27f4b146b8dc90cb9760b71baab40a2256b40bdcec5f8fc74b77aaa80a739246f3f8b3c1aef049025eb36d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f7f037ab6f49d7bc063c20462dda5b39

            SHA1

            81763a1eeea983dfff45c8a4bb413c552a5e5975

            SHA256

            664a88567deb2afed435cb4004d818ce598e27d99a48dc4a15cf71c3dd32de01

            SHA512

            9d2d76eda85bc1446384b7b65bb645e0f1c51c0044a8741485abf668dab32a8c30cb5c50946e76bb6d1a36e6c4e83bce4af1d82a222996e586ccae3e9db6efb4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f7f037ab6f49d7bc063c20462dda5b39

            SHA1

            81763a1eeea983dfff45c8a4bb413c552a5e5975

            SHA256

            664a88567deb2afed435cb4004d818ce598e27d99a48dc4a15cf71c3dd32de01

            SHA512

            9d2d76eda85bc1446384b7b65bb645e0f1c51c0044a8741485abf668dab32a8c30cb5c50946e76bb6d1a36e6c4e83bce4af1d82a222996e586ccae3e9db6efb4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            696a4f799465126adfc901c254d33aa3

            SHA1

            2183e4153151917f712f06573dd7ab9fcbc50f54

            SHA256

            ebebf49dde9aaeb63312627f619cab928a62c42e33898cfdb88436a0f7d33bb9

            SHA512

            db32e3b4fdecd48fc17cfbcea8d24a129c59e02abb6259b17d04d7398b5900d31ce294d26968340ea6845c59c30d7745e38fc9fcebd972f1000f0418fc4d4b54

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            696a4f799465126adfc901c254d33aa3

            SHA1

            2183e4153151917f712f06573dd7ab9fcbc50f54

            SHA256

            ebebf49dde9aaeb63312627f619cab928a62c42e33898cfdb88436a0f7d33bb9

            SHA512

            db32e3b4fdecd48fc17cfbcea8d24a129c59e02abb6259b17d04d7398b5900d31ce294d26968340ea6845c59c30d7745e38fc9fcebd972f1000f0418fc4d4b54

          • \Users\Admin\AppData\Local\Temp\nsj2771.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj2771.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2771.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2771.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2771.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c5952c7f720b0021b797d942cf39182e

            SHA1

            19d04edf17c451c1db6ffc24afe295819bde19bf

            SHA256

            34a141e3c098e6efd611adf12b28c38a4f5ac7b31ea55954229f2e7957455597

            SHA512

            b0424e12a91bb28157d380959b89c09d2deff733ca1d6a76c735c18279b1f2e20a856bdf581c1b2ce603efd4521bca6d8b4d79cbcf355c91f452c3bcd1d9793b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c5952c7f720b0021b797d942cf39182e

            SHA1

            19d04edf17c451c1db6ffc24afe295819bde19bf

            SHA256

            34a141e3c098e6efd611adf12b28c38a4f5ac7b31ea55954229f2e7957455597

            SHA512

            b0424e12a91bb28157d380959b89c09d2deff733ca1d6a76c735c18279b1f2e20a856bdf581c1b2ce603efd4521bca6d8b4d79cbcf355c91f452c3bcd1d9793b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c5952c7f720b0021b797d942cf39182e

            SHA1

            19d04edf17c451c1db6ffc24afe295819bde19bf

            SHA256

            34a141e3c098e6efd611adf12b28c38a4f5ac7b31ea55954229f2e7957455597

            SHA512

            b0424e12a91bb28157d380959b89c09d2deff733ca1d6a76c735c18279b1f2e20a856bdf581c1b2ce603efd4521bca6d8b4d79cbcf355c91f452c3bcd1d9793b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5687ac0a2643c403bff7ed8a5dc901a1

            SHA1

            50fc90a47c578fa9797a6ea158d29e8ea9335402

            SHA256

            6520a6210e0470033383251c71eb62ac3d13021a47d154f359425f1c6c05e9ad

            SHA512

            9ca2e085f78f725f7c0e21dd4e82402de33c1223d72a592a6f5f27e38eec4d95b284ce867644dd446a90492624f33b6cb750cd931788a539a64cef849ca893b7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5687ac0a2643c403bff7ed8a5dc901a1

            SHA1

            50fc90a47c578fa9797a6ea158d29e8ea9335402

            SHA256

            6520a6210e0470033383251c71eb62ac3d13021a47d154f359425f1c6c05e9ad

            SHA512

            9ca2e085f78f725f7c0e21dd4e82402de33c1223d72a592a6f5f27e38eec4d95b284ce867644dd446a90492624f33b6cb750cd931788a539a64cef849ca893b7

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4083f709f18c172ad23c664e0087e315

            SHA1

            967cac958b7cb800f2b50f62729a0fe2b485b05d

            SHA256

            e82d4336e7aa79123c36c8a08b1c296ed776841ad3e8888b2aac5c036f5d5456

            SHA512

            b9a39544b55e61c4af23afa4c596ffabcf8903618d27f4b146b8dc90cb9760b71baab40a2256b40bdcec5f8fc74b77aaa80a739246f3f8b3c1aef049025eb36d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f7f037ab6f49d7bc063c20462dda5b39

            SHA1

            81763a1eeea983dfff45c8a4bb413c552a5e5975

            SHA256

            664a88567deb2afed435cb4004d818ce598e27d99a48dc4a15cf71c3dd32de01

            SHA512

            9d2d76eda85bc1446384b7b65bb645e0f1c51c0044a8741485abf668dab32a8c30cb5c50946e76bb6d1a36e6c4e83bce4af1d82a222996e586ccae3e9db6efb4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            696a4f799465126adfc901c254d33aa3

            SHA1

            2183e4153151917f712f06573dd7ab9fcbc50f54

            SHA256

            ebebf49dde9aaeb63312627f619cab928a62c42e33898cfdb88436a0f7d33bb9

            SHA512

            db32e3b4fdecd48fc17cfbcea8d24a129c59e02abb6259b17d04d7398b5900d31ce294d26968340ea6845c59c30d7745e38fc9fcebd972f1000f0418fc4d4b54

          • memory/472-58-0x0000000000000000-mapping.dmp

          • memory/884-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

            Filesize

            8KB

          • memory/944-60-0x0000000000000000-mapping.dmp

          • memory/1160-69-0x0000000000000000-mapping.dmp

          • memory/1428-80-0x0000000000000000-mapping.dmp

          • memory/1464-57-0x0000000000000000-mapping.dmp

          • memory/1672-85-0x0000000000000000-mapping.dmp

          • memory/1788-63-0x0000000000000000-mapping.dmp

          • memory/1844-79-0x0000000000000000-mapping.dmp

          • memory/1896-86-0x0000000000000000-mapping.dmp

          • memory/1912-75-0x0000000000000000-mapping.dmp

          • memory/1924-61-0x0000000000000000-mapping.dmp