Analysis

  • max time kernel
    91s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:49

General

  • Target

    fb9669a4bce93fed98b28f525c61cec2e9657a063d44b7f79d5a15e8e6565baf.exe

  • Size

    446KB

  • MD5

    b83981c3f2af5bdff01e4f5ec7f75ebd

  • SHA1

    383d33019d5c1a228605607b91c8a6c8f61b08f7

  • SHA256

    fb9669a4bce93fed98b28f525c61cec2e9657a063d44b7f79d5a15e8e6565baf

  • SHA512

    14460be5eada97665ab8486b66e617bf704ac0263ed06bf0b4b14222dda3795304e6c58ef3b2d552e95d14cc17934bbff0102667b54951920d6da81e428a842c

  • SSDEEP

    12288:XWq+6Nc4LcTvbeTiiaLjHh7/I+AuZ2fpL0:XRNcvWiiaLjJ/WuB

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\fb9669a4bce93fed98b28f525c61cec2e9657a063d44b7f79d5a15e8e6565baf.exe
    "C:\Users\Admin\AppData\Local\Temp\fb9669a4bce93fed98b28f525c61cec2e9657a063d44b7f79d5a15e8e6565baf.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:1028
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:664
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3136
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4980
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1592
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1872
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:364
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4592
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4992
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3720
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:852
          • 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:4624
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4632

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuA1D4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf95f35d23b81e55d38481a40a36d7e8

            SHA1

            7c871a61937f71f3cac00b49af50f711b4319612

            SHA256

            ba2b64ac145073f79d55c32fe9ec23d4c56321e0d6b7890b674cad202b3a8a16

            SHA512

            877b62116feb17129abf7edf7eea2f7c3cbdb460c8eb16c3f88429052f61ff71d874e5afa6e93168ac6124dda292a042348d6abab588845feba1d4e64636f859

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf95f35d23b81e55d38481a40a36d7e8

            SHA1

            7c871a61937f71f3cac00b49af50f711b4319612

            SHA256

            ba2b64ac145073f79d55c32fe9ec23d4c56321e0d6b7890b674cad202b3a8a16

            SHA512

            877b62116feb17129abf7edf7eea2f7c3cbdb460c8eb16c3f88429052f61ff71d874e5afa6e93168ac6124dda292a042348d6abab588845feba1d4e64636f859

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf95f35d23b81e55d38481a40a36d7e8

            SHA1

            7c871a61937f71f3cac00b49af50f711b4319612

            SHA256

            ba2b64ac145073f79d55c32fe9ec23d4c56321e0d6b7890b674cad202b3a8a16

            SHA512

            877b62116feb17129abf7edf7eea2f7c3cbdb460c8eb16c3f88429052f61ff71d874e5afa6e93168ac6124dda292a042348d6abab588845feba1d4e64636f859

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf95f35d23b81e55d38481a40a36d7e8

            SHA1

            7c871a61937f71f3cac00b49af50f711b4319612

            SHA256

            ba2b64ac145073f79d55c32fe9ec23d4c56321e0d6b7890b674cad202b3a8a16

            SHA512

            877b62116feb17129abf7edf7eea2f7c3cbdb460c8eb16c3f88429052f61ff71d874e5afa6e93168ac6124dda292a042348d6abab588845feba1d4e64636f859

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            740e412e5756152d7abb969445a4cae6

            SHA1

            7b01826df2f83ced5834739e060bc3766a154213

            SHA256

            99d071ce2a16e9dc475ca061d616b93d74c5cae45ea8d8aa4cee5151f7576432

            SHA512

            3b99ec39d32128509c8fd8614ffb20e0f7947fb294ed0582c02584ebe8879b1d0cfd5cd8702c10c30b96d4380e9999d23aff27b92d45e2f0ed69bf41ff74f9f4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            740e412e5756152d7abb969445a4cae6

            SHA1

            7b01826df2f83ced5834739e060bc3766a154213

            SHA256

            99d071ce2a16e9dc475ca061d616b93d74c5cae45ea8d8aa4cee5151f7576432

            SHA512

            3b99ec39d32128509c8fd8614ffb20e0f7947fb294ed0582c02584ebe8879b1d0cfd5cd8702c10c30b96d4380e9999d23aff27b92d45e2f0ed69bf41ff74f9f4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            740e412e5756152d7abb969445a4cae6

            SHA1

            7b01826df2f83ced5834739e060bc3766a154213

            SHA256

            99d071ce2a16e9dc475ca061d616b93d74c5cae45ea8d8aa4cee5151f7576432

            SHA512

            3b99ec39d32128509c8fd8614ffb20e0f7947fb294ed0582c02584ebe8879b1d0cfd5cd8702c10c30b96d4380e9999d23aff27b92d45e2f0ed69bf41ff74f9f4

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            203801a91fdc2e7c3caecb50245e5bd2

            SHA1

            2d6822e76b5d1dea20009e0a9bc50be3a8c7f570

            SHA256

            840aa1ee1dc7fe91062c85cb900c81b2510728e32ffc0957d9782565f6f5f48c

            SHA512

            dd9c096671f3aace8b98f1aa86909be1ae611af11cbe189f85a1b593e8256585ceed0aff5e4b5db6e7b44b157c1ec6fab3f55d3f6005a881614100158c2af8c0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            203801a91fdc2e7c3caecb50245e5bd2

            SHA1

            2d6822e76b5d1dea20009e0a9bc50be3a8c7f570

            SHA256

            840aa1ee1dc7fe91062c85cb900c81b2510728e32ffc0957d9782565f6f5f48c

            SHA512

            dd9c096671f3aace8b98f1aa86909be1ae611af11cbe189f85a1b593e8256585ceed0aff5e4b5db6e7b44b157c1ec6fab3f55d3f6005a881614100158c2af8c0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4cfe172771248253cd7ec5600e63d0ee

            SHA1

            d7edb02eab36aa4dab4e90560a02329e621c58dd

            SHA256

            50bbf1a331b03216f0ded911e48cade47eea2681b631b01646357a32f2a1ba5c

            SHA512

            061cbad2eb86b438dcb76c86d7165f1f246c2a130b46f1bd36436310898135bf4e0be3b9fdc1346e58755875dc1bc5ba5b57d40dc7224dbe155356f8223c7900

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4cfe172771248253cd7ec5600e63d0ee

            SHA1

            d7edb02eab36aa4dab4e90560a02329e621c58dd

            SHA256

            50bbf1a331b03216f0ded911e48cade47eea2681b631b01646357a32f2a1ba5c

            SHA512

            061cbad2eb86b438dcb76c86d7165f1f246c2a130b46f1bd36436310898135bf4e0be3b9fdc1346e58755875dc1bc5ba5b57d40dc7224dbe155356f8223c7900

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4cfe172771248253cd7ec5600e63d0ee

            SHA1

            d7edb02eab36aa4dab4e90560a02329e621c58dd

            SHA256

            50bbf1a331b03216f0ded911e48cade47eea2681b631b01646357a32f2a1ba5c

            SHA512

            061cbad2eb86b438dcb76c86d7165f1f246c2a130b46f1bd36436310898135bf4e0be3b9fdc1346e58755875dc1bc5ba5b57d40dc7224dbe155356f8223c7900

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6eb104aad98780894c1eba37d613ce48

            SHA1

            0b47b6442acaf09c7057d9ce6190130e809fc308

            SHA256

            2c719ce99c9098c2ad8c0e6608559d364f3f2f3225b727ffa1583b3907a7defa

            SHA512

            0b5a09e41642bdc6f3552db72b6f554716db19c7396f6bb29f8c28458af918091e7c041a00d7148547d7e91363a6d2a709859c7a33baf94424734bbcb0108624

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6eb104aad98780894c1eba37d613ce48

            SHA1

            0b47b6442acaf09c7057d9ce6190130e809fc308

            SHA256

            2c719ce99c9098c2ad8c0e6608559d364f3f2f3225b727ffa1583b3907a7defa

            SHA512

            0b5a09e41642bdc6f3552db72b6f554716db19c7396f6bb29f8c28458af918091e7c041a00d7148547d7e91363a6d2a709859c7a33baf94424734bbcb0108624

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6eb104aad98780894c1eba37d613ce48

            SHA1

            0b47b6442acaf09c7057d9ce6190130e809fc308

            SHA256

            2c719ce99c9098c2ad8c0e6608559d364f3f2f3225b727ffa1583b3907a7defa

            SHA512

            0b5a09e41642bdc6f3552db72b6f554716db19c7396f6bb29f8c28458af918091e7c041a00d7148547d7e91363a6d2a709859c7a33baf94424734bbcb0108624

          • memory/364-152-0x0000000000000000-mapping.dmp

          • memory/664-136-0x0000000000000000-mapping.dmp

          • memory/852-165-0x0000000000000000-mapping.dmp

          • memory/1592-141-0x0000000000000000-mapping.dmp

          • memory/1872-146-0x0000000000000000-mapping.dmp

          • memory/1900-135-0x0000000000000000-mapping.dmp

          • memory/3136-139-0x0000000000000000-mapping.dmp

          • memory/3720-164-0x0000000000000000-mapping.dmp

          • memory/4592-157-0x0000000000000000-mapping.dmp

          • memory/4980-140-0x0000000000000000-mapping.dmp

          • memory/4992-158-0x0000000000000000-mapping.dmp