Analysis

  • max time kernel
    73s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    8c0987b038a69a0f72f0c5e8e75104ca7554325e5e0edb20a23bd9769e6b8851.exe

  • Size

    602KB

  • MD5

    a8cf02fd7e503307a12bd84b50a05a8e

  • SHA1

    978a692a3b8ddc1c5551ed4f784d01a163d84552

  • SHA256

    8c0987b038a69a0f72f0c5e8e75104ca7554325e5e0edb20a23bd9769e6b8851

  • SHA512

    c774a489a6b4c6b8d76679f716a687124ce9c68ca7ed27c37ebf6b32f5232bf893b16a01b15458d8153749bfb8b0cbd4441e2f5dfd703130d334521800f84d1a

  • SSDEEP

    12288:cIny5DYTWRyv01PZpMGIkxIgVBgYmIv/jfv3Em:6UTWovOPZpMmIgVBg8j0m

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\8c0987b038a69a0f72f0c5e8e75104ca7554325e5e0edb20a23bd9769e6b8851.exe
    "C:\Users\Admin\AppData\Local\Temp\8c0987b038a69a0f72f0c5e8e75104ca7554325e5e0edb20a23bd9769e6b8851.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:1316
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:912
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1648
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:880
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1112
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:980
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1388
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1800
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1140
          • 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:1700
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1068
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1744

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5dbd43d91a0b69a1787e5ce6eebc6ecf

            SHA1

            837c0cabd94fe09ce6b9365e96b2964ce0c2507e

            SHA256

            b30fd4357c03a126a2e447ada081309307f20a74bc9f799d284afc4d41bb79ed

            SHA512

            ac9c5788108b6e8f4afb06fe9da736c3151cedc892394a172a0bc1ad474293d5d1133d751093bcb89123f9ff04766f1fe65b91ffce546fdb680262b9ac65fe09

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            90e3a3f41fada3f4b5760106b92d9d9f

            SHA1

            c1554b22fc573fa2a4c1c05c04df2c53ad7027e8

            SHA256

            6dcbcbcea5015f7712d4dade58d86dcf7dccd0a16c0d6ee27e20b2b4cc495514

            SHA512

            340ade775cdbf7e6cd359c18d67a670fe340a9c5dbe7f26311f68b9172b23098dfd220fdd857251fc905eb27c5ffbc89601f6fdedf51e1824c821a84af0ffb4f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            89573bc4d3491130cb3b6346472672d2

            SHA1

            d9742e2218ff09ca0314272b076aaadc805cf0a8

            SHA256

            ffc996dbb6b0fd985563657da65914301711cb8f70cab8abcb79a23059c3fb68

            SHA512

            3d0a0464430a1e0f5510910b2d119a58814287335c6a3f8e00fe39a4dbda9e21d67acd60fe398e4ee1b09c5661a3ecaae01d1546a42438c496aca41b5cd852b9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            976a280ab16fadad00fdf923a444cd2d

            SHA1

            912a6a9ca853cbe25277d2f5e65ceccce242b0a6

            SHA256

            71add04824d0226da6cd4d1bf407ca43ed89c3d6d00354adf41fa684851f1c4f

            SHA512

            cafde9b0643ce2f42d3afcedb69b0ed00755f5184dc55b2b13189176043bed7cb5e8eb43dc55a130b6e50d77e4af05d6c9556186dd8dd40c668342caa7807b4a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            976a280ab16fadad00fdf923a444cd2d

            SHA1

            912a6a9ca853cbe25277d2f5e65ceccce242b0a6

            SHA256

            71add04824d0226da6cd4d1bf407ca43ed89c3d6d00354adf41fa684851f1c4f

            SHA512

            cafde9b0643ce2f42d3afcedb69b0ed00755f5184dc55b2b13189176043bed7cb5e8eb43dc55a130b6e50d77e4af05d6c9556186dd8dd40c668342caa7807b4a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4509af3ce25d0bfb3b08e98d59acf940

            SHA1

            5bbdbb2dd9a9e4da8d3087633f6fee149e302ac5

            SHA256

            e95d817842e9d59a6fafa5284ab426308b55b95996d7027864ca19718337115d

            SHA512

            072a21ecd566c754dd48e17bc3812c30fd3347e64024d6724098db242c33b371b8d20d96149827d02d36f186bbad9b86c7a86ea4be9852226c93145a7c18c792

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4509af3ce25d0bfb3b08e98d59acf940

            SHA1

            5bbdbb2dd9a9e4da8d3087633f6fee149e302ac5

            SHA256

            e95d817842e9d59a6fafa5284ab426308b55b95996d7027864ca19718337115d

            SHA512

            072a21ecd566c754dd48e17bc3812c30fd3347e64024d6724098db242c33b371b8d20d96149827d02d36f186bbad9b86c7a86ea4be9852226c93145a7c18c792

          • \Users\Admin\AppData\Local\Temp\nsjCF15.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjCF15.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjCF15.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjCF15.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjCF15.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5dbd43d91a0b69a1787e5ce6eebc6ecf

            SHA1

            837c0cabd94fe09ce6b9365e96b2964ce0c2507e

            SHA256

            b30fd4357c03a126a2e447ada081309307f20a74bc9f799d284afc4d41bb79ed

            SHA512

            ac9c5788108b6e8f4afb06fe9da736c3151cedc892394a172a0bc1ad474293d5d1133d751093bcb89123f9ff04766f1fe65b91ffce546fdb680262b9ac65fe09

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5dbd43d91a0b69a1787e5ce6eebc6ecf

            SHA1

            837c0cabd94fe09ce6b9365e96b2964ce0c2507e

            SHA256

            b30fd4357c03a126a2e447ada081309307f20a74bc9f799d284afc4d41bb79ed

            SHA512

            ac9c5788108b6e8f4afb06fe9da736c3151cedc892394a172a0bc1ad474293d5d1133d751093bcb89123f9ff04766f1fe65b91ffce546fdb680262b9ac65fe09

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5dbd43d91a0b69a1787e5ce6eebc6ecf

            SHA1

            837c0cabd94fe09ce6b9365e96b2964ce0c2507e

            SHA256

            b30fd4357c03a126a2e447ada081309307f20a74bc9f799d284afc4d41bb79ed

            SHA512

            ac9c5788108b6e8f4afb06fe9da736c3151cedc892394a172a0bc1ad474293d5d1133d751093bcb89123f9ff04766f1fe65b91ffce546fdb680262b9ac65fe09

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            90e3a3f41fada3f4b5760106b92d9d9f

            SHA1

            c1554b22fc573fa2a4c1c05c04df2c53ad7027e8

            SHA256

            6dcbcbcea5015f7712d4dade58d86dcf7dccd0a16c0d6ee27e20b2b4cc495514

            SHA512

            340ade775cdbf7e6cd359c18d67a670fe340a9c5dbe7f26311f68b9172b23098dfd220fdd857251fc905eb27c5ffbc89601f6fdedf51e1824c821a84af0ffb4f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            90e3a3f41fada3f4b5760106b92d9d9f

            SHA1

            c1554b22fc573fa2a4c1c05c04df2c53ad7027e8

            SHA256

            6dcbcbcea5015f7712d4dade58d86dcf7dccd0a16c0d6ee27e20b2b4cc495514

            SHA512

            340ade775cdbf7e6cd359c18d67a670fe340a9c5dbe7f26311f68b9172b23098dfd220fdd857251fc905eb27c5ffbc89601f6fdedf51e1824c821a84af0ffb4f

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            89573bc4d3491130cb3b6346472672d2

            SHA1

            d9742e2218ff09ca0314272b076aaadc805cf0a8

            SHA256

            ffc996dbb6b0fd985563657da65914301711cb8f70cab8abcb79a23059c3fb68

            SHA512

            3d0a0464430a1e0f5510910b2d119a58814287335c6a3f8e00fe39a4dbda9e21d67acd60fe398e4ee1b09c5661a3ecaae01d1546a42438c496aca41b5cd852b9

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            976a280ab16fadad00fdf923a444cd2d

            SHA1

            912a6a9ca853cbe25277d2f5e65ceccce242b0a6

            SHA256

            71add04824d0226da6cd4d1bf407ca43ed89c3d6d00354adf41fa684851f1c4f

            SHA512

            cafde9b0643ce2f42d3afcedb69b0ed00755f5184dc55b2b13189176043bed7cb5e8eb43dc55a130b6e50d77e4af05d6c9556186dd8dd40c668342caa7807b4a

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4509af3ce25d0bfb3b08e98d59acf940

            SHA1

            5bbdbb2dd9a9e4da8d3087633f6fee149e302ac5

            SHA256

            e95d817842e9d59a6fafa5284ab426308b55b95996d7027864ca19718337115d

            SHA512

            072a21ecd566c754dd48e17bc3812c30fd3347e64024d6724098db242c33b371b8d20d96149827d02d36f186bbad9b86c7a86ea4be9852226c93145a7c18c792

          • memory/584-60-0x0000000000000000-mapping.dmp

          • memory/880-61-0x0000000000000000-mapping.dmp

          • memory/912-57-0x0000000000000000-mapping.dmp

          • memory/980-70-0x0000000000000000-mapping.dmp

          • memory/1112-64-0x0000000000000000-mapping.dmp

          • memory/1140-82-0x0000000000000000-mapping.dmp

          • memory/1316-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1316-54-0x0000000076191000-0x0000000076193000-memory.dmp

            Filesize

            8KB

          • memory/1316-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1316-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1388-76-0x0000000000000000-mapping.dmp

          • memory/1648-58-0x0000000000000000-mapping.dmp

          • memory/1700-88-0x0000000000000000-mapping.dmp

          • memory/1800-81-0x0000000000000000-mapping.dmp

          • memory/1980-87-0x0000000000000000-mapping.dmp