Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f5f1d9bc2e9874b3d1922ce37c059f8aae0bbbe5807c5d4b082c37c9af7f599f.exe

  • Size

    603KB

  • MD5

    e61c4d342532e98c02463e6b997c504f

  • SHA1

    b3bf0d85b0e9ea25d5648996f74657015286d0a1

  • SHA256

    f5f1d9bc2e9874b3d1922ce37c059f8aae0bbbe5807c5d4b082c37c9af7f599f

  • SHA512

    060aa6b2d972213c9a751f53c742b380ece80921b85e60870f57649762ba378c0c0b71a1ccb51ec55abfaa2d9c586ec48f07c450fcf44c7a3a74eb28cbac3dca

  • SSDEEP

    12288:HIny5DYTfIehUl49FuUSvRcI14ppzPe0z3p4ESuOulPf3XCYxj:PUTfBK49YUS14ppjzyEIM3iY9

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\f5f1d9bc2e9874b3d1922ce37c059f8aae0bbbe5807c5d4b082c37c9af7f599f.exe
    "C:\Users\Admin\AppData\Local\Temp\f5f1d9bc2e9874b3d1922ce37c059f8aae0bbbe5807c5d4b082c37c9af7f599f.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:1292
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1152
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:884
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1732
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:524
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1524
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1148
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2000
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1952
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2024
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:624
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1988
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1388

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2b9fcf19fbaaff2bce2d1d4f6d522783

            SHA1

            bf470edc686b1cb321e0b0204df10ffc6012a799

            SHA256

            e63a8c309806f895a3933ec705ffd95a712196979acb1fa72e0932a829e1a332

            SHA512

            003278804c186dcdce0d6af09efc5b02b3e2dc7dad97cccc71762f5fbc79a3ae107f8fa22947a7a9d2630a23a6e5f7f14f856ae2820ae971c101d9401184741b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e90882979a97ad6361acfd9bebb405b3

            SHA1

            f623948c4eae86d3e873c5aad2f4b8258c62fdc2

            SHA256

            22b33fd0e1c8ce3576fec20c1a58d1aacb8ab13c448ea8add87f95fe74530de9

            SHA512

            9c75d3b98975d5e0148e9d1496669d0ce977f6de9e3e6145d5a65dfdfeb05b57c7dc46fd966c2d2a4f71209403f7fbaf5b9fb38ce28b1b76d7307d27216aa670

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ad79c4688259f36025571fc8b751dbdf

            SHA1

            a7bf12343c200db0268389962ba8b8136f517748

            SHA256

            69f7101b2ce383d6a97d389d0f0446fb999148cc1f1aef8a6502c1ac18a72c81

            SHA512

            415a8e8b136bc4af7e2e66c7671ce0b514eefc5a7327202cc017b6c8935759d4a8f0bfcc4f6efbde3b852c172fd9d628e570df65f14972514071c8c3b776c189

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            dd735597708772c41b9ca4abea175685

            SHA1

            302a16d21969baadc1fdb04330bbf3c215bd1efa

            SHA256

            73512be5b5462921d9ee3c8974be63f1aa5b7c26fb7f26eb37265c133aedd8a4

            SHA512

            e3944e318a2bbc61a7d1bb68cd5918ac63be47464400f79fcd720984aad6847240beebf1509a7a06e39cf25f6a917218a25832afb199ec5213306f659ec110cd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            dd735597708772c41b9ca4abea175685

            SHA1

            302a16d21969baadc1fdb04330bbf3c215bd1efa

            SHA256

            73512be5b5462921d9ee3c8974be63f1aa5b7c26fb7f26eb37265c133aedd8a4

            SHA512

            e3944e318a2bbc61a7d1bb68cd5918ac63be47464400f79fcd720984aad6847240beebf1509a7a06e39cf25f6a917218a25832afb199ec5213306f659ec110cd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            43e379149935e6fc316d7283ef54714e

            SHA1

            091fc811615a4ede06a41cea090b9edbe3967acb

            SHA256

            ff4eaf90e12bde645b2d675857b564768174680e18eb462d6d728b4ab51fc567

            SHA512

            7d0a06fdf4cff8ad983e13c3e7a3afe9a62d653202a0b9c6f653c402bdbd14004cc89abd95c92de55854a54945c5573fd913c176a12ea1422ecdce1f2e98241d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            43e379149935e6fc316d7283ef54714e

            SHA1

            091fc811615a4ede06a41cea090b9edbe3967acb

            SHA256

            ff4eaf90e12bde645b2d675857b564768174680e18eb462d6d728b4ab51fc567

            SHA512

            7d0a06fdf4cff8ad983e13c3e7a3afe9a62d653202a0b9c6f653c402bdbd14004cc89abd95c92de55854a54945c5573fd913c176a12ea1422ecdce1f2e98241d

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2b9fcf19fbaaff2bce2d1d4f6d522783

            SHA1

            bf470edc686b1cb321e0b0204df10ffc6012a799

            SHA256

            e63a8c309806f895a3933ec705ffd95a712196979acb1fa72e0932a829e1a332

            SHA512

            003278804c186dcdce0d6af09efc5b02b3e2dc7dad97cccc71762f5fbc79a3ae107f8fa22947a7a9d2630a23a6e5f7f14f856ae2820ae971c101d9401184741b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2b9fcf19fbaaff2bce2d1d4f6d522783

            SHA1

            bf470edc686b1cb321e0b0204df10ffc6012a799

            SHA256

            e63a8c309806f895a3933ec705ffd95a712196979acb1fa72e0932a829e1a332

            SHA512

            003278804c186dcdce0d6af09efc5b02b3e2dc7dad97cccc71762f5fbc79a3ae107f8fa22947a7a9d2630a23a6e5f7f14f856ae2820ae971c101d9401184741b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2b9fcf19fbaaff2bce2d1d4f6d522783

            SHA1

            bf470edc686b1cb321e0b0204df10ffc6012a799

            SHA256

            e63a8c309806f895a3933ec705ffd95a712196979acb1fa72e0932a829e1a332

            SHA512

            003278804c186dcdce0d6af09efc5b02b3e2dc7dad97cccc71762f5fbc79a3ae107f8fa22947a7a9d2630a23a6e5f7f14f856ae2820ae971c101d9401184741b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e90882979a97ad6361acfd9bebb405b3

            SHA1

            f623948c4eae86d3e873c5aad2f4b8258c62fdc2

            SHA256

            22b33fd0e1c8ce3576fec20c1a58d1aacb8ab13c448ea8add87f95fe74530de9

            SHA512

            9c75d3b98975d5e0148e9d1496669d0ce977f6de9e3e6145d5a65dfdfeb05b57c7dc46fd966c2d2a4f71209403f7fbaf5b9fb38ce28b1b76d7307d27216aa670

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            e90882979a97ad6361acfd9bebb405b3

            SHA1

            f623948c4eae86d3e873c5aad2f4b8258c62fdc2

            SHA256

            22b33fd0e1c8ce3576fec20c1a58d1aacb8ab13c448ea8add87f95fe74530de9

            SHA512

            9c75d3b98975d5e0148e9d1496669d0ce977f6de9e3e6145d5a65dfdfeb05b57c7dc46fd966c2d2a4f71209403f7fbaf5b9fb38ce28b1b76d7307d27216aa670

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ad79c4688259f36025571fc8b751dbdf

            SHA1

            a7bf12343c200db0268389962ba8b8136f517748

            SHA256

            69f7101b2ce383d6a97d389d0f0446fb999148cc1f1aef8a6502c1ac18a72c81

            SHA512

            415a8e8b136bc4af7e2e66c7671ce0b514eefc5a7327202cc017b6c8935759d4a8f0bfcc4f6efbde3b852c172fd9d628e570df65f14972514071c8c3b776c189

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            dd735597708772c41b9ca4abea175685

            SHA1

            302a16d21969baadc1fdb04330bbf3c215bd1efa

            SHA256

            73512be5b5462921d9ee3c8974be63f1aa5b7c26fb7f26eb37265c133aedd8a4

            SHA512

            e3944e318a2bbc61a7d1bb68cd5918ac63be47464400f79fcd720984aad6847240beebf1509a7a06e39cf25f6a917218a25832afb199ec5213306f659ec110cd

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            43e379149935e6fc316d7283ef54714e

            SHA1

            091fc811615a4ede06a41cea090b9edbe3967acb

            SHA256

            ff4eaf90e12bde645b2d675857b564768174680e18eb462d6d728b4ab51fc567

            SHA512

            7d0a06fdf4cff8ad983e13c3e7a3afe9a62d653202a0b9c6f653c402bdbd14004cc89abd95c92de55854a54945c5573fd913c176a12ea1422ecdce1f2e98241d

          • memory/524-64-0x0000000000000000-mapping.dmp

          • memory/624-87-0x0000000000000000-mapping.dmp

          • memory/884-61-0x0000000000000000-mapping.dmp

          • memory/984-58-0x0000000000000000-mapping.dmp

          • memory/1148-76-0x0000000000000000-mapping.dmp

          • memory/1152-59-0x0000000000000000-mapping.dmp

          • memory/1292-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

            Filesize

            8KB

          • memory/1292-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1292-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1524-70-0x0000000000000000-mapping.dmp

          • memory/1732-62-0x0000000000000000-mapping.dmp

          • memory/1952-81-0x0000000000000000-mapping.dmp

          • memory/2000-80-0x0000000000000000-mapping.dmp

          • memory/2024-86-0x0000000000000000-mapping.dmp