Analysis

  • max time kernel
    181s
  • max time network
    194s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    fc1997704a254aa2a3fe7bddfbab0fc860b5d0691cbac4355a4e17cd28eff3e6.exe

  • Size

    602KB

  • MD5

    a8cf696c8d86fdb94c9edb96f38e937a

  • SHA1

    8f5dbe35fb7b390d26f40b887b0071d0cbc4d2fa

  • SHA256

    fc1997704a254aa2a3fe7bddfbab0fc860b5d0691cbac4355a4e17cd28eff3e6

  • SHA512

    5c1c4876d9cbc59c9674ce0cc8227fac9e375fe4dcaf08ae42eee97d6de434d4d5755b1d584747a69928dd2c3218ca379510de41bf341d28405f971c96a62a7a

  • SSDEEP

    12288:/Iny5DYTWRHpzVrJBjTJzlsopCKFzpZC6cl9ZOohs:nUTWRXzjT9lH5Fzi6c1Oo

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\fc1997704a254aa2a3fe7bddfbab0fc860b5d0691cbac4355a4e17cd28eff3e6.exe
    "C:\Users\Admin\AppData\Local\Temp\fc1997704a254aa2a3fe7bddfbab0fc860b5d0691cbac4355a4e17cd28eff3e6.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:3108
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2000
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:204
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4956
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4548
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4716
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:312
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3004
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1056
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1348
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3648
          • 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:4188
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4472

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsk2E74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            42a55e557321d7307a8873baf1645008

            SHA1

            913f20d7ee815b99c655a6d931341bba1c445bfd

            SHA256

            0e970e833b8413b8715ef6df8348cfa34f04be96faf133d65635da965df9cc14

            SHA512

            80a3c7862d00efe16e173c26647caadb13826cb602773f1885eefeaa068a916a502333282321612c3812b611d315506dd912706afa86cff1e48165b8c70c1e8e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            42a55e557321d7307a8873baf1645008

            SHA1

            913f20d7ee815b99c655a6d931341bba1c445bfd

            SHA256

            0e970e833b8413b8715ef6df8348cfa34f04be96faf133d65635da965df9cc14

            SHA512

            80a3c7862d00efe16e173c26647caadb13826cb602773f1885eefeaa068a916a502333282321612c3812b611d315506dd912706afa86cff1e48165b8c70c1e8e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            42a55e557321d7307a8873baf1645008

            SHA1

            913f20d7ee815b99c655a6d931341bba1c445bfd

            SHA256

            0e970e833b8413b8715ef6df8348cfa34f04be96faf133d65635da965df9cc14

            SHA512

            80a3c7862d00efe16e173c26647caadb13826cb602773f1885eefeaa068a916a502333282321612c3812b611d315506dd912706afa86cff1e48165b8c70c1e8e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            42a55e557321d7307a8873baf1645008

            SHA1

            913f20d7ee815b99c655a6d931341bba1c445bfd

            SHA256

            0e970e833b8413b8715ef6df8348cfa34f04be96faf133d65635da965df9cc14

            SHA512

            80a3c7862d00efe16e173c26647caadb13826cb602773f1885eefeaa068a916a502333282321612c3812b611d315506dd912706afa86cff1e48165b8c70c1e8e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c24ec060973ab8a1c4d7e2b31d409ff5

            SHA1

            749b12e72ca8a6240752cd541b9fff6115074698

            SHA256

            2f646e73f22bff3fe3ad77b4096b2603e200896af8955eee43e0ff4aa5d8ab46

            SHA512

            c7ceee714cfe955d102122222dc0456b98cddbb929ba7a88c5895681bd1e6c509956d44f9c4ce469d1770f289649a0e03021e16dd2c2be4106e0a7873b596535

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c24ec060973ab8a1c4d7e2b31d409ff5

            SHA1

            749b12e72ca8a6240752cd541b9fff6115074698

            SHA256

            2f646e73f22bff3fe3ad77b4096b2603e200896af8955eee43e0ff4aa5d8ab46

            SHA512

            c7ceee714cfe955d102122222dc0456b98cddbb929ba7a88c5895681bd1e6c509956d44f9c4ce469d1770f289649a0e03021e16dd2c2be4106e0a7873b596535

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c24ec060973ab8a1c4d7e2b31d409ff5

            SHA1

            749b12e72ca8a6240752cd541b9fff6115074698

            SHA256

            2f646e73f22bff3fe3ad77b4096b2603e200896af8955eee43e0ff4aa5d8ab46

            SHA512

            c7ceee714cfe955d102122222dc0456b98cddbb929ba7a88c5895681bd1e6c509956d44f9c4ce469d1770f289649a0e03021e16dd2c2be4106e0a7873b596535

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            204721697f2e34ac80e5ddc71bbaa0a3

            SHA1

            5e85198318c4ea2df708e82da40c07883639181f

            SHA256

            2906926440dfa2d2cec7d026b93be771c05b8dbf4ec5b7cc738592ab5f9792e8

            SHA512

            721ec0551e9bdafcb64ce491a8f815c4c7aed609b307d81a3bdf80d65e9dd5e6441d15a74ac5b36da9424a9446f8cd4816596d483a6a9b0efc9502d81b8c106d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            204721697f2e34ac80e5ddc71bbaa0a3

            SHA1

            5e85198318c4ea2df708e82da40c07883639181f

            SHA256

            2906926440dfa2d2cec7d026b93be771c05b8dbf4ec5b7cc738592ab5f9792e8

            SHA512

            721ec0551e9bdafcb64ce491a8f815c4c7aed609b307d81a3bdf80d65e9dd5e6441d15a74ac5b36da9424a9446f8cd4816596d483a6a9b0efc9502d81b8c106d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            97ae86b4a9ff8f04e73e8bf9f9e8c797

            SHA1

            4b4ea68f4c2ba9825c12244296f72e2a85bc527b

            SHA256

            18e5dcf4ee53fb58407c66b5efcf649af38b58ed10118b99aa36766052df569e

            SHA512

            8cdb3fc951aa89f084dddb5f266642a0ec8ec9a1129dc2fbf92fc2d6adc28890e256501a8b6a8e510a795f5a5e4aa372466e361668af6239f7aad0479c56a2e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            97ae86b4a9ff8f04e73e8bf9f9e8c797

            SHA1

            4b4ea68f4c2ba9825c12244296f72e2a85bc527b

            SHA256

            18e5dcf4ee53fb58407c66b5efcf649af38b58ed10118b99aa36766052df569e

            SHA512

            8cdb3fc951aa89f084dddb5f266642a0ec8ec9a1129dc2fbf92fc2d6adc28890e256501a8b6a8e510a795f5a5e4aa372466e361668af6239f7aad0479c56a2e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            97ae86b4a9ff8f04e73e8bf9f9e8c797

            SHA1

            4b4ea68f4c2ba9825c12244296f72e2a85bc527b

            SHA256

            18e5dcf4ee53fb58407c66b5efcf649af38b58ed10118b99aa36766052df569e

            SHA512

            8cdb3fc951aa89f084dddb5f266642a0ec8ec9a1129dc2fbf92fc2d6adc28890e256501a8b6a8e510a795f5a5e4aa372466e361668af6239f7aad0479c56a2e2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5387d840c667bdbf26666e8189f9aef9

            SHA1

            bd5b4f1f8b2193d8c6a8183eb0c6307faef3762f

            SHA256

            e3a2377cb2d7fb912c510201d38fa5c52e5967e333fe3211506e5e34b8e2c50b

            SHA512

            44ef9bef936749e32bf78319a92cadcbf6e1a3958ef69c8392e5602c461bd4bc2bc6272777db31646a5def7bb3f2f1e52caf151de9225e5208c838d266ca424f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5387d840c667bdbf26666e8189f9aef9

            SHA1

            bd5b4f1f8b2193d8c6a8183eb0c6307faef3762f

            SHA256

            e3a2377cb2d7fb912c510201d38fa5c52e5967e333fe3211506e5e34b8e2c50b

            SHA512

            44ef9bef936749e32bf78319a92cadcbf6e1a3958ef69c8392e5602c461bd4bc2bc6272777db31646a5def7bb3f2f1e52caf151de9225e5208c838d266ca424f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5387d840c667bdbf26666e8189f9aef9

            SHA1

            bd5b4f1f8b2193d8c6a8183eb0c6307faef3762f

            SHA256

            e3a2377cb2d7fb912c510201d38fa5c52e5967e333fe3211506e5e34b8e2c50b

            SHA512

            44ef9bef936749e32bf78319a92cadcbf6e1a3958ef69c8392e5602c461bd4bc2bc6272777db31646a5def7bb3f2f1e52caf151de9225e5208c838d266ca424f

          • memory/204-140-0x0000000000000000-mapping.dmp

          • memory/312-154-0x0000000000000000-mapping.dmp

          • memory/1056-160-0x0000000000000000-mapping.dmp

          • memory/1348-166-0x0000000000000000-mapping.dmp

          • memory/2000-137-0x0000000000000000-mapping.dmp

          • memory/3004-159-0x0000000000000000-mapping.dmp

          • memory/3108-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3108-142-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3108-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3648-167-0x0000000000000000-mapping.dmp

          • memory/4548-143-0x0000000000000000-mapping.dmp

          • memory/4692-136-0x0000000000000000-mapping.dmp

          • memory/4716-148-0x0000000000000000-mapping.dmp

          • memory/4956-141-0x0000000000000000-mapping.dmp