Analysis

  • max time kernel
    86s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:59

General

  • Target

    29651c237fd0905c10c270c4c2b6d66cc208fdc91ef4885ca7fad77e3a7bf1fe.exe

  • Size

    445KB

  • MD5

    964950a83d5fbd1e5377fd6c88d95f31

  • SHA1

    89874d3bca4c8baf0fa5c94aa799128ae5d7f5bd

  • SHA256

    29651c237fd0905c10c270c4c2b6d66cc208fdc91ef4885ca7fad77e3a7bf1fe

  • SHA512

    729ef50f7016839aa170fc113f6d26e5e212ee614b3af6a0e655ad256bf0d2804b71c9064a7e8e2f00fdcec4e2ee9124081d63247120e237fd094eb742c6b595

  • SSDEEP

    12288:9fkRxcHrJwjiw0687eXrJQLXS/DL9x8lPdUR6:9cyG+dJemLw3jK3

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\29651c237fd0905c10c270c4c2b6d66cc208fdc91ef4885ca7fad77e3a7bf1fe.exe
    "C:\Users\Admin\AppData\Local\Temp\29651c237fd0905c10c270c4c2b6d66cc208fdc91ef4885ca7fad77e3a7bf1fe.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:1096
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:920
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1472
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:676
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1684
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:268
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:324
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1244
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1524
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:888
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1632
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:844
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1184

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4929545014e7348ea7025acd7bfc1a20

            SHA1

            41ff272baf82e3439c90c48193714165ae77e4b7

            SHA256

            f32ebf06b3238ba096b416d325e6226c2a828fd94cdc15333c892390123474c0

            SHA512

            7d44290ac3f7b11003cb9e20c3fcf3467155a0636ab260486d1ff8d8f2f89321039c39cfa0fd3f3bc197da08744865b231f645dd3d68aa700e7584e0453b015b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0588805df74466ca8d81c39b08aea93d

            SHA1

            835c76bf937e1aa6984b4ec1f92a8f6488ad293c

            SHA256

            8803083ddfc17fa952d4b162e4cbba89a1cc13b1a75ac0cb15df286bc2a07d33

            SHA512

            320e05fa321781d7ea3fac80000a31781f0a75de2ecb97b73f1fc42b60f37730b0a151d98f3d1efc07ad16152f2f8cfa84c042084a3d302bb34f357d78d2fcd6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c8211f36634a6232eef90c7a6d358f8e

            SHA1

            f4484747ab84c0de73b2b86828b382c89c10688a

            SHA256

            2a2bd6abba65b0f7ff424a0fe5665b8fb8100b53ecf3456a2ac9129cd305be69

            SHA512

            d83c4860f8660dff75c61f29d5fcdfdca51586e191fc11bdd43d503523d7f1159e6553f913de160824bbd98ce39f5f3680fa7a3b6b30b4408d0879104109ab24

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9c44ec85b78008f9f38cc5f4c5e69ab1

            SHA1

            a8f7f02266ee19cdab1499b6c8863fd941cc4402

            SHA256

            31bd4fb1b895ae249eddd37d3946f57d5e68d99f155f4a29a1ac80221668e2f8

            SHA512

            ecbefe26c09ece22a0fd0b8a06a25c8e43cb8c2ce34e0e9ae3d2b56ca99fb9e5869ee8ff511fe04e769ca6645941dda073d3b2a7b0af6b3321f46a2f28cf9d28

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9c44ec85b78008f9f38cc5f4c5e69ab1

            SHA1

            a8f7f02266ee19cdab1499b6c8863fd941cc4402

            SHA256

            31bd4fb1b895ae249eddd37d3946f57d5e68d99f155f4a29a1ac80221668e2f8

            SHA512

            ecbefe26c09ece22a0fd0b8a06a25c8e43cb8c2ce34e0e9ae3d2b56ca99fb9e5869ee8ff511fe04e769ca6645941dda073d3b2a7b0af6b3321f46a2f28cf9d28

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            91b2bee0414b9d43a692fd36ca330614

            SHA1

            3be860d18e168c3b1a34f18d75739a9a536af09f

            SHA256

            fd36318322969878e5835fdaa917e98659b115d2d273d1f51dffffd6ee46e26a

            SHA512

            a31271298556c8a793f3504a23624a652f23c57d2057b2cd4c5dd71559c1a18cb55e82a850b164e94ed95ddf1402ef0ca8d032b680aaa739109f2db4d7ee27c8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            91b2bee0414b9d43a692fd36ca330614

            SHA1

            3be860d18e168c3b1a34f18d75739a9a536af09f

            SHA256

            fd36318322969878e5835fdaa917e98659b115d2d273d1f51dffffd6ee46e26a

            SHA512

            a31271298556c8a793f3504a23624a652f23c57d2057b2cd4c5dd71559c1a18cb55e82a850b164e94ed95ddf1402ef0ca8d032b680aaa739109f2db4d7ee27c8

          • \Users\Admin\AppData\Local\Temp\nstF5B7.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstF5B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstF5B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstF5B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstF5B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4929545014e7348ea7025acd7bfc1a20

            SHA1

            41ff272baf82e3439c90c48193714165ae77e4b7

            SHA256

            f32ebf06b3238ba096b416d325e6226c2a828fd94cdc15333c892390123474c0

            SHA512

            7d44290ac3f7b11003cb9e20c3fcf3467155a0636ab260486d1ff8d8f2f89321039c39cfa0fd3f3bc197da08744865b231f645dd3d68aa700e7584e0453b015b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4929545014e7348ea7025acd7bfc1a20

            SHA1

            41ff272baf82e3439c90c48193714165ae77e4b7

            SHA256

            f32ebf06b3238ba096b416d325e6226c2a828fd94cdc15333c892390123474c0

            SHA512

            7d44290ac3f7b11003cb9e20c3fcf3467155a0636ab260486d1ff8d8f2f89321039c39cfa0fd3f3bc197da08744865b231f645dd3d68aa700e7584e0453b015b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4929545014e7348ea7025acd7bfc1a20

            SHA1

            41ff272baf82e3439c90c48193714165ae77e4b7

            SHA256

            f32ebf06b3238ba096b416d325e6226c2a828fd94cdc15333c892390123474c0

            SHA512

            7d44290ac3f7b11003cb9e20c3fcf3467155a0636ab260486d1ff8d8f2f89321039c39cfa0fd3f3bc197da08744865b231f645dd3d68aa700e7584e0453b015b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0588805df74466ca8d81c39b08aea93d

            SHA1

            835c76bf937e1aa6984b4ec1f92a8f6488ad293c

            SHA256

            8803083ddfc17fa952d4b162e4cbba89a1cc13b1a75ac0cb15df286bc2a07d33

            SHA512

            320e05fa321781d7ea3fac80000a31781f0a75de2ecb97b73f1fc42b60f37730b0a151d98f3d1efc07ad16152f2f8cfa84c042084a3d302bb34f357d78d2fcd6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0588805df74466ca8d81c39b08aea93d

            SHA1

            835c76bf937e1aa6984b4ec1f92a8f6488ad293c

            SHA256

            8803083ddfc17fa952d4b162e4cbba89a1cc13b1a75ac0cb15df286bc2a07d33

            SHA512

            320e05fa321781d7ea3fac80000a31781f0a75de2ecb97b73f1fc42b60f37730b0a151d98f3d1efc07ad16152f2f8cfa84c042084a3d302bb34f357d78d2fcd6

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c8211f36634a6232eef90c7a6d358f8e

            SHA1

            f4484747ab84c0de73b2b86828b382c89c10688a

            SHA256

            2a2bd6abba65b0f7ff424a0fe5665b8fb8100b53ecf3456a2ac9129cd305be69

            SHA512

            d83c4860f8660dff75c61f29d5fcdfdca51586e191fc11bdd43d503523d7f1159e6553f913de160824bbd98ce39f5f3680fa7a3b6b30b4408d0879104109ab24

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9c44ec85b78008f9f38cc5f4c5e69ab1

            SHA1

            a8f7f02266ee19cdab1499b6c8863fd941cc4402

            SHA256

            31bd4fb1b895ae249eddd37d3946f57d5e68d99f155f4a29a1ac80221668e2f8

            SHA512

            ecbefe26c09ece22a0fd0b8a06a25c8e43cb8c2ce34e0e9ae3d2b56ca99fb9e5869ee8ff511fe04e769ca6645941dda073d3b2a7b0af6b3321f46a2f28cf9d28

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            91b2bee0414b9d43a692fd36ca330614

            SHA1

            3be860d18e168c3b1a34f18d75739a9a536af09f

            SHA256

            fd36318322969878e5835fdaa917e98659b115d2d273d1f51dffffd6ee46e26a

            SHA512

            a31271298556c8a793f3504a23624a652f23c57d2057b2cd4c5dd71559c1a18cb55e82a850b164e94ed95ddf1402ef0ca8d032b680aaa739109f2db4d7ee27c8

          • memory/268-63-0x0000000000000000-mapping.dmp

          • memory/324-69-0x0000000000000000-mapping.dmp

          • memory/676-60-0x0000000000000000-mapping.dmp

          • memory/888-85-0x0000000000000000-mapping.dmp

          • memory/920-57-0x0000000000000000-mapping.dmp

          • memory/964-80-0x0000000000000000-mapping.dmp

          • memory/1096-54-0x0000000075991000-0x0000000075993000-memory.dmp

            Filesize

            8KB

          • memory/1244-75-0x0000000000000000-mapping.dmp

          • memory/1472-58-0x0000000000000000-mapping.dmp

          • memory/1524-79-0x0000000000000000-mapping.dmp

          • memory/1632-86-0x0000000000000000-mapping.dmp

          • memory/1684-61-0x0000000000000000-mapping.dmp