Analysis

  • max time kernel
    13s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:15

General

  • Target

    ae6e064e8eb2bd1d69f02ca4f2764ff9385c04e291a3f838f1ab4d7997555657.exe

  • Size

    601KB

  • MD5

    3aad2fff8d05a3efa1b4c17bf4df67fa

  • SHA1

    7280fbee131826bb33d1efcc5fda1d26b670268e

  • SHA256

    ae6e064e8eb2bd1d69f02ca4f2764ff9385c04e291a3f838f1ab4d7997555657

  • SHA512

    fd2b1518528759c5682aa805aceace0062e9db4bced4d00a5e80c0b23cd5999b3d23153ce1a4111af2621edef232ac297869e764d258c9e1b51393bf8b5bf768

  • SSDEEP

    12288:gIny5DYTNISqjxnHK1Lda0XY8Qi9oSJ6CcPM6S:eUTNIxjxu28QiKu

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\ae6e064e8eb2bd1d69f02ca4f2764ff9385c04e291a3f838f1ab4d7997555657.exe
    "C:\Users\Admin\AppData\Local\Temp\ae6e064e8eb2bd1d69f02ca4f2764ff9385c04e291a3f838f1ab4d7997555657.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:1972
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1236
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1620
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:816
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:896
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:596
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1400
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2044
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1624
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1704
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1980
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1536
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:880
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1060

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            469932379c891a629dd195555b330b56

            SHA1

            21818532607f4694937bdaf4bde44e2910e3dfc8

            SHA256

            5e13931b6c4e8007398ec91549ccfe5270091602376faa15314e8ef7acb18a8b

            SHA512

            72922a1885af16df9cee0d40547e91b8ea662c9a4266bbbe30f1a15cd689d024572fda589fda2d66f23e52d9cdfb78f2f50973d5a373b95c565312ac6465d5c9

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c5d99c8a281446239101210e5341a229

            SHA1

            49aca5b18ba9d46c3499c716e11d7ee6443b6024

            SHA256

            2118a628b3dee9908b0a0ef0ae17ad359280efb92caf5c24f6ffbd6b8951d302

            SHA512

            344ac3f58ddf6c2e191c38f40ccbb236fe920f0470b86b0f1d304088cc253f7fb4bd6b2ddfdbbd69d53f7d99ffafe487f42d7fecf1722930b04f7f814978e141

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            d3d12251201dfb20d0054e2f08a4afe8

            SHA1

            12212188623b206c3ef7dbf109739e720b3abc44

            SHA256

            f9e2cca1e1aa7c882793f8343d1f34eacdc1b0ff27e5aa55b64b40b34939e15f

            SHA512

            083100d0f4bb7cab516424a031dd0e4e3e5614e271db3eecd70265a516e4ec6c94600a12560d9c4b9f9f5dea8a10e0d3af468eba8aef1b49226fcf3228c202da

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            97bb4edca054166677924cb6850123bf

            SHA1

            cbfc58fe15bb978ef78c1418e236d9cdb6b8fa09

            SHA256

            b4b9f0ed94b0dca275c0de7aa30f3c2ad81d75d82694002bdcb5e5a7f8297479

            SHA512

            9622cd67c49b71eec38774fbda2f60971082c38cf600bed32f1eb8c994040b4e41e30526f3c757be7b5d65c057585a09b75e9ba888c1b38307f8a55a4b0f9f4d

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            97bb4edca054166677924cb6850123bf

            SHA1

            cbfc58fe15bb978ef78c1418e236d9cdb6b8fa09

            SHA256

            b4b9f0ed94b0dca275c0de7aa30f3c2ad81d75d82694002bdcb5e5a7f8297479

            SHA512

            9622cd67c49b71eec38774fbda2f60971082c38cf600bed32f1eb8c994040b4e41e30526f3c757be7b5d65c057585a09b75e9ba888c1b38307f8a55a4b0f9f4d

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            dbea887658fa479a1bcb5f1fea913a0f

            SHA1

            135d0963bc4d6697eb129b0ce88e39b32df8aa17

            SHA256

            74871fe5d8666621132ddba9e18d68a8c51cae93f0b52d54e24624ed1cb5ee50

            SHA512

            46640a3f76c69ec4c3aa4626ffe6d7552f6d5379aa8631dfed7af607eb04b0f04a3380ce6512927672bd2344bfd0328f02fc025e308f90af7bebddf949dafea8

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            dbea887658fa479a1bcb5f1fea913a0f

            SHA1

            135d0963bc4d6697eb129b0ce88e39b32df8aa17

            SHA256

            74871fe5d8666621132ddba9e18d68a8c51cae93f0b52d54e24624ed1cb5ee50

            SHA512

            46640a3f76c69ec4c3aa4626ffe6d7552f6d5379aa8631dfed7af607eb04b0f04a3380ce6512927672bd2344bfd0328f02fc025e308f90af7bebddf949dafea8

          • \Users\Admin\AppData\Local\Temp\nsoC96A.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoC96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            469932379c891a629dd195555b330b56

            SHA1

            21818532607f4694937bdaf4bde44e2910e3dfc8

            SHA256

            5e13931b6c4e8007398ec91549ccfe5270091602376faa15314e8ef7acb18a8b

            SHA512

            72922a1885af16df9cee0d40547e91b8ea662c9a4266bbbe30f1a15cd689d024572fda589fda2d66f23e52d9cdfb78f2f50973d5a373b95c565312ac6465d5c9

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            469932379c891a629dd195555b330b56

            SHA1

            21818532607f4694937bdaf4bde44e2910e3dfc8

            SHA256

            5e13931b6c4e8007398ec91549ccfe5270091602376faa15314e8ef7acb18a8b

            SHA512

            72922a1885af16df9cee0d40547e91b8ea662c9a4266bbbe30f1a15cd689d024572fda589fda2d66f23e52d9cdfb78f2f50973d5a373b95c565312ac6465d5c9

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            469932379c891a629dd195555b330b56

            SHA1

            21818532607f4694937bdaf4bde44e2910e3dfc8

            SHA256

            5e13931b6c4e8007398ec91549ccfe5270091602376faa15314e8ef7acb18a8b

            SHA512

            72922a1885af16df9cee0d40547e91b8ea662c9a4266bbbe30f1a15cd689d024572fda589fda2d66f23e52d9cdfb78f2f50973d5a373b95c565312ac6465d5c9

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c5d99c8a281446239101210e5341a229

            SHA1

            49aca5b18ba9d46c3499c716e11d7ee6443b6024

            SHA256

            2118a628b3dee9908b0a0ef0ae17ad359280efb92caf5c24f6ffbd6b8951d302

            SHA512

            344ac3f58ddf6c2e191c38f40ccbb236fe920f0470b86b0f1d304088cc253f7fb4bd6b2ddfdbbd69d53f7d99ffafe487f42d7fecf1722930b04f7f814978e141

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c5d99c8a281446239101210e5341a229

            SHA1

            49aca5b18ba9d46c3499c716e11d7ee6443b6024

            SHA256

            2118a628b3dee9908b0a0ef0ae17ad359280efb92caf5c24f6ffbd6b8951d302

            SHA512

            344ac3f58ddf6c2e191c38f40ccbb236fe920f0470b86b0f1d304088cc253f7fb4bd6b2ddfdbbd69d53f7d99ffafe487f42d7fecf1722930b04f7f814978e141

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            d3d12251201dfb20d0054e2f08a4afe8

            SHA1

            12212188623b206c3ef7dbf109739e720b3abc44

            SHA256

            f9e2cca1e1aa7c882793f8343d1f34eacdc1b0ff27e5aa55b64b40b34939e15f

            SHA512

            083100d0f4bb7cab516424a031dd0e4e3e5614e271db3eecd70265a516e4ec6c94600a12560d9c4b9f9f5dea8a10e0d3af468eba8aef1b49226fcf3228c202da

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            97bb4edca054166677924cb6850123bf

            SHA1

            cbfc58fe15bb978ef78c1418e236d9cdb6b8fa09

            SHA256

            b4b9f0ed94b0dca275c0de7aa30f3c2ad81d75d82694002bdcb5e5a7f8297479

            SHA512

            9622cd67c49b71eec38774fbda2f60971082c38cf600bed32f1eb8c994040b4e41e30526f3c757be7b5d65c057585a09b75e9ba888c1b38307f8a55a4b0f9f4d

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            dbea887658fa479a1bcb5f1fea913a0f

            SHA1

            135d0963bc4d6697eb129b0ce88e39b32df8aa17

            SHA256

            74871fe5d8666621132ddba9e18d68a8c51cae93f0b52d54e24624ed1cb5ee50

            SHA512

            46640a3f76c69ec4c3aa4626ffe6d7552f6d5379aa8631dfed7af607eb04b0f04a3380ce6512927672bd2344bfd0328f02fc025e308f90af7bebddf949dafea8

          • memory/596-64-0x0000000000000000-mapping.dmp
          • memory/816-61-0x0000000000000000-mapping.dmp
          • memory/896-62-0x0000000000000000-mapping.dmp
          • memory/1236-58-0x0000000000000000-mapping.dmp
          • memory/1400-70-0x0000000000000000-mapping.dmp
          • memory/1536-87-0x0000000000000000-mapping.dmp
          • memory/1620-59-0x0000000000000000-mapping.dmp
          • memory/1624-80-0x0000000000000000-mapping.dmp
          • memory/1704-81-0x0000000000000000-mapping.dmp
          • memory/1972-54-0x0000000076391000-0x0000000076393000-memory.dmp
            Filesize

            8KB

          • memory/1972-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1972-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1980-86-0x0000000000000000-mapping.dmp
          • memory/2044-76-0x0000000000000000-mapping.dmp