Analysis

  • max time kernel
    96s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:21

General

  • Target

    7db26ef8fbaf73c896cd714339d54c664f5ba3952ed552b99ffdeada37525b04.exe

  • Size

    603KB

  • MD5

    698cf513ac34399b89019159e9d510b1

  • SHA1

    7e9a22a6734bf259f05ab84c2ea4e7569886cc30

  • SHA256

    7db26ef8fbaf73c896cd714339d54c664f5ba3952ed552b99ffdeada37525b04

  • SHA512

    6de5f82596211ce8b23ef23c63d3f0a8bd252d0b11098bbf667fd5f2f1f3275fb7112171a84d6da792663ef1d4e04c57528aa395c412e491a3c5fd5a634f0e04

  • SSDEEP

    12288:aIny5DYTmIiDjwoCkpjeBkO/lti4uNFsGcM+vtMlUVG:8UTmxvLleBkO/ltaCtb0

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\7db26ef8fbaf73c896cd714339d54c664f5ba3952ed552b99ffdeada37525b04.exe
    "C:\Users\Admin\AppData\Local\Temp\7db26ef8fbaf73c896cd714339d54c664f5ba3952ed552b99ffdeada37525b04.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:1656
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1112
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1876
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1480
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1460
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1132
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:484
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:768
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:864
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:928
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1760
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1684
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:896

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e10b36494e3a5270751ee8b1fb2b7f5c

            SHA1

            2725f62aa78ad3fbcbb11684e25b205ab094a350

            SHA256

            e0116c5b2f2e2ee045f791dc8873d8b1c4fdbd2c7c1601c0fd614f6d20117552

            SHA512

            dbd628d0e76ad5d2f878f85e0d27ac309390ca116b05a68930d4797c60673727d057263b27076e95335f6d5a44c115cb4f5c5a3291db1b6a898e7fe0a4b71be2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1e89b35bccfc94970d64efbf8e28daa8

            SHA1

            835409c192b2ae90041d5a4da55738ba95345df6

            SHA256

            09aa6019223287f5fb864d850705a76478aae7ec86c7634eb862d6539c51d74b

            SHA512

            c7407176ebee708b875da8538dca5084d78fcd483d6620ff9696b968e3d4448aab35fa54794e5b8f184ba6e69ba08479712ab3563919231c904a13b9a894d339

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2c35733185ea468a3115e829afbcff6d

            SHA1

            f995002a90ad1834805e3456adecce6dc0db0bf5

            SHA256

            9c696af3de0af4dea93ea17f58d0a9aabc4da36ed62f3ae6e651e24932168f7c

            SHA512

            bdbe4bd9ffa51bee618bf1742e826ae9fbffd95d0f324a223dfda57a2ad78f942a19c65caee019b2d0fa79a8dd1aef1d76f57c79251dfac70d6fffa3b33ba592

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            66eb61663de8291052a58f70e44d522d

            SHA1

            4dba6ca6c9db0a666a74c63ff2cf66e16e5ee80e

            SHA256

            32fb430758654f9dbabcbf63e7f020a00c731eebd0a9c049b4620c62deb3cdca

            SHA512

            23a17e3aeb58411b70febb104eb148c4c20c9adbf3d548d043109b2386fe18d068422923176e823097ce84352b5ae85a2100d3f0b9b3b2e207eeb763fbdc5e6b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            66eb61663de8291052a58f70e44d522d

            SHA1

            4dba6ca6c9db0a666a74c63ff2cf66e16e5ee80e

            SHA256

            32fb430758654f9dbabcbf63e7f020a00c731eebd0a9c049b4620c62deb3cdca

            SHA512

            23a17e3aeb58411b70febb104eb148c4c20c9adbf3d548d043109b2386fe18d068422923176e823097ce84352b5ae85a2100d3f0b9b3b2e207eeb763fbdc5e6b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ebfcd39d61eaaf2d7fa030d78f72bd2b

            SHA1

            accd66acc3ecd2f96a13611638c4af6ce9058eb6

            SHA256

            f040bd23150719cdcd30748d60928ecf58cd7c6bd44a098312f251b07540b903

            SHA512

            921273047d29271c119fd2eb10ec4f30e1235d4c2c2768a560484a72d5155b040a1187a53acb78c6cf69da9092dfcf2c20cb4dece9552f72c23c0a188a273c93

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ebfcd39d61eaaf2d7fa030d78f72bd2b

            SHA1

            accd66acc3ecd2f96a13611638c4af6ce9058eb6

            SHA256

            f040bd23150719cdcd30748d60928ecf58cd7c6bd44a098312f251b07540b903

            SHA512

            921273047d29271c119fd2eb10ec4f30e1235d4c2c2768a560484a72d5155b040a1187a53acb78c6cf69da9092dfcf2c20cb4dece9552f72c23c0a188a273c93

          • \Users\Admin\AppData\Local\Temp\nst9AEB.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst9AEB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9AEB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9AEB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9AEB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e10b36494e3a5270751ee8b1fb2b7f5c

            SHA1

            2725f62aa78ad3fbcbb11684e25b205ab094a350

            SHA256

            e0116c5b2f2e2ee045f791dc8873d8b1c4fdbd2c7c1601c0fd614f6d20117552

            SHA512

            dbd628d0e76ad5d2f878f85e0d27ac309390ca116b05a68930d4797c60673727d057263b27076e95335f6d5a44c115cb4f5c5a3291db1b6a898e7fe0a4b71be2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e10b36494e3a5270751ee8b1fb2b7f5c

            SHA1

            2725f62aa78ad3fbcbb11684e25b205ab094a350

            SHA256

            e0116c5b2f2e2ee045f791dc8873d8b1c4fdbd2c7c1601c0fd614f6d20117552

            SHA512

            dbd628d0e76ad5d2f878f85e0d27ac309390ca116b05a68930d4797c60673727d057263b27076e95335f6d5a44c115cb4f5c5a3291db1b6a898e7fe0a4b71be2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e10b36494e3a5270751ee8b1fb2b7f5c

            SHA1

            2725f62aa78ad3fbcbb11684e25b205ab094a350

            SHA256

            e0116c5b2f2e2ee045f791dc8873d8b1c4fdbd2c7c1601c0fd614f6d20117552

            SHA512

            dbd628d0e76ad5d2f878f85e0d27ac309390ca116b05a68930d4797c60673727d057263b27076e95335f6d5a44c115cb4f5c5a3291db1b6a898e7fe0a4b71be2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1e89b35bccfc94970d64efbf8e28daa8

            SHA1

            835409c192b2ae90041d5a4da55738ba95345df6

            SHA256

            09aa6019223287f5fb864d850705a76478aae7ec86c7634eb862d6539c51d74b

            SHA512

            c7407176ebee708b875da8538dca5084d78fcd483d6620ff9696b968e3d4448aab35fa54794e5b8f184ba6e69ba08479712ab3563919231c904a13b9a894d339

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1e89b35bccfc94970d64efbf8e28daa8

            SHA1

            835409c192b2ae90041d5a4da55738ba95345df6

            SHA256

            09aa6019223287f5fb864d850705a76478aae7ec86c7634eb862d6539c51d74b

            SHA512

            c7407176ebee708b875da8538dca5084d78fcd483d6620ff9696b968e3d4448aab35fa54794e5b8f184ba6e69ba08479712ab3563919231c904a13b9a894d339

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2c35733185ea468a3115e829afbcff6d

            SHA1

            f995002a90ad1834805e3456adecce6dc0db0bf5

            SHA256

            9c696af3de0af4dea93ea17f58d0a9aabc4da36ed62f3ae6e651e24932168f7c

            SHA512

            bdbe4bd9ffa51bee618bf1742e826ae9fbffd95d0f324a223dfda57a2ad78f942a19c65caee019b2d0fa79a8dd1aef1d76f57c79251dfac70d6fffa3b33ba592

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            66eb61663de8291052a58f70e44d522d

            SHA1

            4dba6ca6c9db0a666a74c63ff2cf66e16e5ee80e

            SHA256

            32fb430758654f9dbabcbf63e7f020a00c731eebd0a9c049b4620c62deb3cdca

            SHA512

            23a17e3aeb58411b70febb104eb148c4c20c9adbf3d548d043109b2386fe18d068422923176e823097ce84352b5ae85a2100d3f0b9b3b2e207eeb763fbdc5e6b

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ebfcd39d61eaaf2d7fa030d78f72bd2b

            SHA1

            accd66acc3ecd2f96a13611638c4af6ce9058eb6

            SHA256

            f040bd23150719cdcd30748d60928ecf58cd7c6bd44a098312f251b07540b903

            SHA512

            921273047d29271c119fd2eb10ec4f30e1235d4c2c2768a560484a72d5155b040a1187a53acb78c6cf69da9092dfcf2c20cb4dece9552f72c23c0a188a273c93

          • memory/484-70-0x0000000000000000-mapping.dmp

          • memory/768-76-0x0000000000000000-mapping.dmp

          • memory/864-82-0x0000000000000000-mapping.dmp

          • memory/928-87-0x0000000000000000-mapping.dmp

          • memory/1112-57-0x0000000000000000-mapping.dmp

          • memory/1132-64-0x0000000000000000-mapping.dmp

          • memory/1460-62-0x0000000000000000-mapping.dmp

          • memory/1480-61-0x0000000000000000-mapping.dmp

          • memory/1656-54-0x0000000076221000-0x0000000076223000-memory.dmp

            Filesize

            8KB

          • memory/1656-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1656-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1656-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1740-81-0x0000000000000000-mapping.dmp

          • memory/1760-88-0x0000000000000000-mapping.dmp

          • memory/1876-58-0x0000000000000000-mapping.dmp