Analysis

  • max time kernel
    144s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:10

General

  • Target

    dcac92ff6dfcf1abf0b4052fbbf354394e2ce038608c24858b2bbaaf750d15d0.exe

  • Size

    603KB

  • MD5

    1fcff6e3df08079d0bf2fbab161ad1b8

  • SHA1

    4dbc88b225f168a7e4f2085b8b46f1b675a5507a

  • SHA256

    dcac92ff6dfcf1abf0b4052fbbf354394e2ce038608c24858b2bbaaf750d15d0

  • SHA512

    a0c92f66b1f0be5019a9c26c9173dabc733bdfed174fc09c81da4a25d511ba24269fbf892c05654a9bb5907cb884b571378ae5506d57ae6f9f455d41a823caaf

  • SSDEEP

    12288:6Iny5DYTeQaDyQYyOtLs1EnEAkPgYpPhLdB:cUT7iyMOpagEB

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dcac92ff6dfcf1abf0b4052fbbf354394e2ce038608c24858b2bbaaf750d15d0.exe
    "C:\Users\Admin\AppData\Local\Temp\dcac92ff6dfcf1abf0b4052fbbf354394e2ce038608c24858b2bbaaf750d15d0.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:4444
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1628
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4252
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5056
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4912
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4628
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2844
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4364
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:236
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3408
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4720
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:176
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4692

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nszAC83.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            003fda19a6e416fb89916fdc824d8770

            SHA1

            bee930f1a2196f89a3784f97c2e876cb312ec3ec

            SHA256

            59240400ac9d1833028b0b299ebd9b9655eef4c9bca84817baf0296d63736151

            SHA512

            4fab0ac3a55e31c64025333d9eb5db1152d18ef9b2ce228e7fafec226e8575413172a4db55b7ddd8841d3309ea5dcf6b47e0fc8043dfa2f936484e6633f1c2ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            003fda19a6e416fb89916fdc824d8770

            SHA1

            bee930f1a2196f89a3784f97c2e876cb312ec3ec

            SHA256

            59240400ac9d1833028b0b299ebd9b9655eef4c9bca84817baf0296d63736151

            SHA512

            4fab0ac3a55e31c64025333d9eb5db1152d18ef9b2ce228e7fafec226e8575413172a4db55b7ddd8841d3309ea5dcf6b47e0fc8043dfa2f936484e6633f1c2ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            003fda19a6e416fb89916fdc824d8770

            SHA1

            bee930f1a2196f89a3784f97c2e876cb312ec3ec

            SHA256

            59240400ac9d1833028b0b299ebd9b9655eef4c9bca84817baf0296d63736151

            SHA512

            4fab0ac3a55e31c64025333d9eb5db1152d18ef9b2ce228e7fafec226e8575413172a4db55b7ddd8841d3309ea5dcf6b47e0fc8043dfa2f936484e6633f1c2ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            003fda19a6e416fb89916fdc824d8770

            SHA1

            bee930f1a2196f89a3784f97c2e876cb312ec3ec

            SHA256

            59240400ac9d1833028b0b299ebd9b9655eef4c9bca84817baf0296d63736151

            SHA512

            4fab0ac3a55e31c64025333d9eb5db1152d18ef9b2ce228e7fafec226e8575413172a4db55b7ddd8841d3309ea5dcf6b47e0fc8043dfa2f936484e6633f1c2ff

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            372968bf6c75aada321bad71fe3afdf8

            SHA1

            98a6bd779623a35ce3f67ad920e80383f442ea4d

            SHA256

            823f49230d055c1fe965c6076dbe8208d1e82989c454ffee97dba87c40fe1c52

            SHA512

            18c5ecbb76df8f4eec7e1fb1f5b28742ee57a299c9417b4f06fdf94528bd52a6fc634bfbed372120f1317fc1138c67393be99f32f0117304855a8243228c071b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            372968bf6c75aada321bad71fe3afdf8

            SHA1

            98a6bd779623a35ce3f67ad920e80383f442ea4d

            SHA256

            823f49230d055c1fe965c6076dbe8208d1e82989c454ffee97dba87c40fe1c52

            SHA512

            18c5ecbb76df8f4eec7e1fb1f5b28742ee57a299c9417b4f06fdf94528bd52a6fc634bfbed372120f1317fc1138c67393be99f32f0117304855a8243228c071b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            372968bf6c75aada321bad71fe3afdf8

            SHA1

            98a6bd779623a35ce3f67ad920e80383f442ea4d

            SHA256

            823f49230d055c1fe965c6076dbe8208d1e82989c454ffee97dba87c40fe1c52

            SHA512

            18c5ecbb76df8f4eec7e1fb1f5b28742ee57a299c9417b4f06fdf94528bd52a6fc634bfbed372120f1317fc1138c67393be99f32f0117304855a8243228c071b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0ed8d8c0e0347dd771fed3134dc6dcb3

            SHA1

            93d70282ce24bc1eaf08d1399d29325dcbee8f4a

            SHA256

            86e602a7599c9f2351c986e236d64f83d6c6ed9b1bb0f0239bcc894e13846db1

            SHA512

            1d72e8bd52845ba6e5df82d33fb57ff7703da3090bfe3b75d32381a69d5eb93c21a0c36ad3ceafe1d403fbff7c36fd55cb7e19c5b335431d18bcdfbe021b7b96

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0ed8d8c0e0347dd771fed3134dc6dcb3

            SHA1

            93d70282ce24bc1eaf08d1399d29325dcbee8f4a

            SHA256

            86e602a7599c9f2351c986e236d64f83d6c6ed9b1bb0f0239bcc894e13846db1

            SHA512

            1d72e8bd52845ba6e5df82d33fb57ff7703da3090bfe3b75d32381a69d5eb93c21a0c36ad3ceafe1d403fbff7c36fd55cb7e19c5b335431d18bcdfbe021b7b96

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e46663f71583ed769ee5d8a793661dc4

            SHA1

            d5e65f184bf395ca39adb2d5bd28e9646c29b0b4

            SHA256

            967d91c11743d5c5af8b2e4860e6b555c40703f670770991d2baec83c9fcf102

            SHA512

            449772d2e16c109d49b0f193129f62ff4f94a906a33415fc60c0ed806ea993721bd20b0d37929278b5a048390a627c0df63e5913bab23f35bec0a0439e774a90

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e46663f71583ed769ee5d8a793661dc4

            SHA1

            d5e65f184bf395ca39adb2d5bd28e9646c29b0b4

            SHA256

            967d91c11743d5c5af8b2e4860e6b555c40703f670770991d2baec83c9fcf102

            SHA512

            449772d2e16c109d49b0f193129f62ff4f94a906a33415fc60c0ed806ea993721bd20b0d37929278b5a048390a627c0df63e5913bab23f35bec0a0439e774a90

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e46663f71583ed769ee5d8a793661dc4

            SHA1

            d5e65f184bf395ca39adb2d5bd28e9646c29b0b4

            SHA256

            967d91c11743d5c5af8b2e4860e6b555c40703f670770991d2baec83c9fcf102

            SHA512

            449772d2e16c109d49b0f193129f62ff4f94a906a33415fc60c0ed806ea993721bd20b0d37929278b5a048390a627c0df63e5913bab23f35bec0a0439e774a90

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            004ec815a0acf8e2cde1d2e8088a9d8f

            SHA1

            8ada5c65eae49880fb3a9eacde345a513fe7d0f8

            SHA256

            71de2185b9140e4c1d870cb911c64ef5048ee25e1fe8baf64c70eee3b8fef6e8

            SHA512

            123de4b443380cc9ecb5de8558e0d910ef8e4ae51dc206270c739ec3dfe2d3b06a4e197b21048caec412a58671dfd106db754c59a3e8e3182e092d51f15c0da1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            004ec815a0acf8e2cde1d2e8088a9d8f

            SHA1

            8ada5c65eae49880fb3a9eacde345a513fe7d0f8

            SHA256

            71de2185b9140e4c1d870cb911c64ef5048ee25e1fe8baf64c70eee3b8fef6e8

            SHA512

            123de4b443380cc9ecb5de8558e0d910ef8e4ae51dc206270c739ec3dfe2d3b06a4e197b21048caec412a58671dfd106db754c59a3e8e3182e092d51f15c0da1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            004ec815a0acf8e2cde1d2e8088a9d8f

            SHA1

            8ada5c65eae49880fb3a9eacde345a513fe7d0f8

            SHA256

            71de2185b9140e4c1d870cb911c64ef5048ee25e1fe8baf64c70eee3b8fef6e8

            SHA512

            123de4b443380cc9ecb5de8558e0d910ef8e4ae51dc206270c739ec3dfe2d3b06a4e197b21048caec412a58671dfd106db754c59a3e8e3182e092d51f15c0da1

          • memory/236-159-0x0000000000000000-mapping.dmp

          • memory/1628-136-0x0000000000000000-mapping.dmp

          • memory/2112-137-0x0000000000000000-mapping.dmp

          • memory/2844-153-0x0000000000000000-mapping.dmp

          • memory/3408-165-0x0000000000000000-mapping.dmp

          • memory/4252-140-0x0000000000000000-mapping.dmp

          • memory/4364-158-0x0000000000000000-mapping.dmp

          • memory/4444-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4444-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4628-147-0x0000000000000000-mapping.dmp

          • memory/4720-166-0x0000000000000000-mapping.dmp

          • memory/4912-142-0x0000000000000000-mapping.dmp

          • memory/5056-141-0x0000000000000000-mapping.dmp