Analysis

  • max time kernel
    51s
  • max time network
    130s
  • 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 10:20

General

  • Target

    873228a1d6a805ad6cf71e52fff62b045f794096ff5a474eea02fc25c1386635.exe

  • Size

    601KB

  • MD5

    755555346210618c96bd3d90289d6e83

  • SHA1

    f621147b5fd2ef0dc036f09d83befc4cb3036182

  • SHA256

    873228a1d6a805ad6cf71e52fff62b045f794096ff5a474eea02fc25c1386635

  • SHA512

    54d60d15fc907c37955735ae2ea6122c150c31670f36a1465152563959e5db4254752b1d93c7b4acc5e0a53fc910b917d4ea81eb959921df36aa27f5e3122da4

  • SSDEEP

    12288:VIny5DYTDP6YSVxB+FPL31QmdXspgFfmOVPpH3v:hUTDylVrCPBQRpgFfLdpH3v

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\873228a1d6a805ad6cf71e52fff62b045f794096ff5a474eea02fc25c1386635.exe
    "C:\Users\Admin\AppData\Local\Temp\873228a1d6a805ad6cf71e52fff62b045f794096ff5a474eea02fc25c1386635.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:1532
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1200
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3324
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5012
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3052
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4356
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3540
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4664
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1476
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4604
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4720
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4052
          • 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:3880
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4392

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspE1CB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6fa20cbaca080e49918e9fec5094b961

            SHA1

            b9a3005c772ba9bf6f77e2ce533cb40af5186360

            SHA256

            5710119e43decd3574fdf60138a1ef89e25179f85de6c2c6aec6cd53a79c22d8

            SHA512

            58d8e534e77456c3bd9c4ecc8c0dd4a237507f2d93f26ab1e9bcb400cebe10e9569d9a32850c9f6053a3f7faa7aca8b8b371dc15d4cf60750df631e3cc8cce20

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6fa20cbaca080e49918e9fec5094b961

            SHA1

            b9a3005c772ba9bf6f77e2ce533cb40af5186360

            SHA256

            5710119e43decd3574fdf60138a1ef89e25179f85de6c2c6aec6cd53a79c22d8

            SHA512

            58d8e534e77456c3bd9c4ecc8c0dd4a237507f2d93f26ab1e9bcb400cebe10e9569d9a32850c9f6053a3f7faa7aca8b8b371dc15d4cf60750df631e3cc8cce20

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6fa20cbaca080e49918e9fec5094b961

            SHA1

            b9a3005c772ba9bf6f77e2ce533cb40af5186360

            SHA256

            5710119e43decd3574fdf60138a1ef89e25179f85de6c2c6aec6cd53a79c22d8

            SHA512

            58d8e534e77456c3bd9c4ecc8c0dd4a237507f2d93f26ab1e9bcb400cebe10e9569d9a32850c9f6053a3f7faa7aca8b8b371dc15d4cf60750df631e3cc8cce20

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6fa20cbaca080e49918e9fec5094b961

            SHA1

            b9a3005c772ba9bf6f77e2ce533cb40af5186360

            SHA256

            5710119e43decd3574fdf60138a1ef89e25179f85de6c2c6aec6cd53a79c22d8

            SHA512

            58d8e534e77456c3bd9c4ecc8c0dd4a237507f2d93f26ab1e9bcb400cebe10e9569d9a32850c9f6053a3f7faa7aca8b8b371dc15d4cf60750df631e3cc8cce20

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            47df750adbc2c5fa4acccbadcc88b846

            SHA1

            92c12a962840acb6fc35fc1f6dc4159f1d800559

            SHA256

            d59ed56ee90516a424db070c6fead2f89002fc2325079483fb82287902c975b7

            SHA512

            48d9e832eb1cdb05542b84ce26ff67f9f42d0f8f4a57965e8f91e37f5836c2bc44a2580c535f2dee091af6e9749e75c49af27167aa8c3df54d3990e102aad2bd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            47df750adbc2c5fa4acccbadcc88b846

            SHA1

            92c12a962840acb6fc35fc1f6dc4159f1d800559

            SHA256

            d59ed56ee90516a424db070c6fead2f89002fc2325079483fb82287902c975b7

            SHA512

            48d9e832eb1cdb05542b84ce26ff67f9f42d0f8f4a57965e8f91e37f5836c2bc44a2580c535f2dee091af6e9749e75c49af27167aa8c3df54d3990e102aad2bd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            47df750adbc2c5fa4acccbadcc88b846

            SHA1

            92c12a962840acb6fc35fc1f6dc4159f1d800559

            SHA256

            d59ed56ee90516a424db070c6fead2f89002fc2325079483fb82287902c975b7

            SHA512

            48d9e832eb1cdb05542b84ce26ff67f9f42d0f8f4a57965e8f91e37f5836c2bc44a2580c535f2dee091af6e9749e75c49af27167aa8c3df54d3990e102aad2bd

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            457fd3f33ae19be0a729aa09ce46f7d0

            SHA1

            43511172312653988106f1124ba577c2b1484777

            SHA256

            596b145cf3c4784a8d20fb8a6c07c2dc4180ddd9b4f4b3bc487758f6ead6e528

            SHA512

            63e22809d32fda876a9ae1203651efebbce331c26de93bef3615a911f9ca10099effba4ffb98b6ee1fbf18fb7c67a0dbb4d0c48cdcf7f43f55ef774f572e6c40

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            457fd3f33ae19be0a729aa09ce46f7d0

            SHA1

            43511172312653988106f1124ba577c2b1484777

            SHA256

            596b145cf3c4784a8d20fb8a6c07c2dc4180ddd9b4f4b3bc487758f6ead6e528

            SHA512

            63e22809d32fda876a9ae1203651efebbce331c26de93bef3615a911f9ca10099effba4ffb98b6ee1fbf18fb7c67a0dbb4d0c48cdcf7f43f55ef774f572e6c40

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            396d8e8df1e2d4d0e01f92f7d3541f8e

            SHA1

            f9f02f73f89612665a5835ac0b8c33732b16bf69

            SHA256

            839bc244dd2320718a463c5543662e2feed5cf8788c71c8a90e88c0ecc48c946

            SHA512

            52bde0e579a877263d09260c3c51bfd5565dfa5298c0c2eb5d29f3c0dbb2448bb9b19eb48a09b9d45e6e924649cfe6c469353587203774581a4462c36b64a1e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            396d8e8df1e2d4d0e01f92f7d3541f8e

            SHA1

            f9f02f73f89612665a5835ac0b8c33732b16bf69

            SHA256

            839bc244dd2320718a463c5543662e2feed5cf8788c71c8a90e88c0ecc48c946

            SHA512

            52bde0e579a877263d09260c3c51bfd5565dfa5298c0c2eb5d29f3c0dbb2448bb9b19eb48a09b9d45e6e924649cfe6c469353587203774581a4462c36b64a1e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            396d8e8df1e2d4d0e01f92f7d3541f8e

            SHA1

            f9f02f73f89612665a5835ac0b8c33732b16bf69

            SHA256

            839bc244dd2320718a463c5543662e2feed5cf8788c71c8a90e88c0ecc48c946

            SHA512

            52bde0e579a877263d09260c3c51bfd5565dfa5298c0c2eb5d29f3c0dbb2448bb9b19eb48a09b9d45e6e924649cfe6c469353587203774581a4462c36b64a1e2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            fc7eef2c6960d96547c8e763a43f399c

            SHA1

            98bd19510df7f2d6c97ecbe11bef0d0ac8f46849

            SHA256

            f2c36c49796b8208a5e30fb0c3ce44ca5ebad66a2df2a27798fb3c0a6c6998ae

            SHA512

            42da847e34ce0fcaf8fd72a25e11ec407dac6bc8a0409c8d1caeeee96e141fd8651d2e4124e29d57d939dec46a7186fc4b99b118395a65f5ba9c4c1ebd7e2544

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            fc7eef2c6960d96547c8e763a43f399c

            SHA1

            98bd19510df7f2d6c97ecbe11bef0d0ac8f46849

            SHA256

            f2c36c49796b8208a5e30fb0c3ce44ca5ebad66a2df2a27798fb3c0a6c6998ae

            SHA512

            42da847e34ce0fcaf8fd72a25e11ec407dac6bc8a0409c8d1caeeee96e141fd8651d2e4124e29d57d939dec46a7186fc4b99b118395a65f5ba9c4c1ebd7e2544

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            fc7eef2c6960d96547c8e763a43f399c

            SHA1

            98bd19510df7f2d6c97ecbe11bef0d0ac8f46849

            SHA256

            f2c36c49796b8208a5e30fb0c3ce44ca5ebad66a2df2a27798fb3c0a6c6998ae

            SHA512

            42da847e34ce0fcaf8fd72a25e11ec407dac6bc8a0409c8d1caeeee96e141fd8651d2e4124e29d57d939dec46a7186fc4b99b118395a65f5ba9c4c1ebd7e2544

          • memory/1200-136-0x0000000000000000-mapping.dmp

          • memory/1476-158-0x0000000000000000-mapping.dmp

          • memory/1532-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1532-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3052-141-0x0000000000000000-mapping.dmp

          • memory/3324-137-0x0000000000000000-mapping.dmp

          • memory/3540-147-0x0000000000000000-mapping.dmp

          • memory/4052-166-0x0000000000000000-mapping.dmp

          • memory/4356-142-0x0000000000000000-mapping.dmp

          • memory/4604-159-0x0000000000000000-mapping.dmp

          • memory/4664-153-0x0000000000000000-mapping.dmp

          • memory/4720-165-0x0000000000000000-mapping.dmp

          • memory/5012-140-0x0000000000000000-mapping.dmp