Analysis

  • max time kernel
    17s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    f7b72c2b8afeb42e37380d8f9755e6d3e140821101c8e91708e8a762423bdfd3.exe

  • Size

    602KB

  • MD5

    49b6b852e9d699aa50763db48a1600f6

  • SHA1

    477fee5afc118a8351f3f19af210328d3c41117f

  • SHA256

    f7b72c2b8afeb42e37380d8f9755e6d3e140821101c8e91708e8a762423bdfd3

  • SHA512

    9d5debf12371401519d89690a0baa33ce692bb3aa97919fda8fbe986ccad58b0b331c8786f3869607ba031dd979b581976165b3bb315a0593dae6d0a0d7b2713

  • SSDEEP

    12288:4Iny5DYTZIvHB7oIPgnNm+nz/XXZqOR6oabnA3MP6PAFCm:WUTZAhUa6jtRzabnAt

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\f7b72c2b8afeb42e37380d8f9755e6d3e140821101c8e91708e8a762423bdfd3.exe
    "C:\Users\Admin\AppData\Local\Temp\f7b72c2b8afeb42e37380d8f9755e6d3e140821101c8e91708e8a762423bdfd3.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:1588
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1312
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1744
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1692
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1900
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:824
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1320
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1572
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1616
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:996
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:980
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:808
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1888

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0124117e73b94a550c1867292fd2c907

            SHA1

            95eb26e00d95afd6e38d63d50cb035a2d4ca54b7

            SHA256

            61e03c2717b384e0886a51442e6d83824e67d021451fb92fa6c89f722d349362

            SHA512

            f068f115c2cb929ab80780392ffe53006fb5eb4a0fc0f8763e33b7c5c90266f2651ac9ff4cd169105cf6b2ed352c8f96dd8fc25215891c759257479f61592d2e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cfe7cd9367e697f8e8676ec8ea16bed2

            SHA1

            0ff334bf6b0763a19ad0633719c35b2e2d6ed248

            SHA256

            2b5c0ed5f7bc99b7a1f8596042f036644ebd370538c983880c6de5e412e3a50f

            SHA512

            9d57ee64f23555f02f9c2564e60e6f71bdf5d05ba8c214b790cec1f5924826941aa134069a33d36a495ea61fb3eb08bf323adb5515410e98dea37385fc1b5960

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fb31170ce0962abc2fb1ca4616861c37

            SHA1

            6f4abe4be508a964d324a615718848b3dd32a3de

            SHA256

            d69f70ccc2c95c145c440aa75de97e1b917759a02ce18650ba322f0cc676b258

            SHA512

            d716ce431e592b40b233aa59ebccd819ba5d68084acba51c3b23153264b0ac66d0ad692b66986f6f9f7b5fbd72214240a5d995d41508f3239c73f87eacb33b62

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e03037fc17b0e4eac1a201061ad5f8b8

            SHA1

            03a1d9307f9149e4b8ed9dc5d32a9dd1e38c5e65

            SHA256

            7b3228a1c4cc1bed3cf846fb293cb3d56c4cbb4fef2f7ad5e5f890a79a9d6830

            SHA512

            6b1e70b972283e4aa641753f87389f694f47a156b7cbecc2535db8da44d220be96515669441466de039f3dcc5a7e9ca22f88a7d14dc84ef7a5c8bad5a40d3691

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e03037fc17b0e4eac1a201061ad5f8b8

            SHA1

            03a1d9307f9149e4b8ed9dc5d32a9dd1e38c5e65

            SHA256

            7b3228a1c4cc1bed3cf846fb293cb3d56c4cbb4fef2f7ad5e5f890a79a9d6830

            SHA512

            6b1e70b972283e4aa641753f87389f694f47a156b7cbecc2535db8da44d220be96515669441466de039f3dcc5a7e9ca22f88a7d14dc84ef7a5c8bad5a40d3691

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b489788df15d6d3497accf96c89457e2

            SHA1

            9244da2f3d221aded5a6cb87b7bd7aec489af3cf

            SHA256

            7c87826152c34aa3a419be3b148716c1f56744d5097a0629cf35d3142ca62d0b

            SHA512

            2af257567dd8a5daafd05622fada0fd965a67da1bb99d71102e42540575ee9f1e3aab3b41dadf7745f52ec5dfde1d772afb55e63ca7dc70b3b1853adf5a32be6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b489788df15d6d3497accf96c89457e2

            SHA1

            9244da2f3d221aded5a6cb87b7bd7aec489af3cf

            SHA256

            7c87826152c34aa3a419be3b148716c1f56744d5097a0629cf35d3142ca62d0b

            SHA512

            2af257567dd8a5daafd05622fada0fd965a67da1bb99d71102e42540575ee9f1e3aab3b41dadf7745f52ec5dfde1d772afb55e63ca7dc70b3b1853adf5a32be6

          • \Users\Admin\AppData\Local\Temp\nst8597.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst8597.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst8597.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst8597.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst8597.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0124117e73b94a550c1867292fd2c907

            SHA1

            95eb26e00d95afd6e38d63d50cb035a2d4ca54b7

            SHA256

            61e03c2717b384e0886a51442e6d83824e67d021451fb92fa6c89f722d349362

            SHA512

            f068f115c2cb929ab80780392ffe53006fb5eb4a0fc0f8763e33b7c5c90266f2651ac9ff4cd169105cf6b2ed352c8f96dd8fc25215891c759257479f61592d2e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0124117e73b94a550c1867292fd2c907

            SHA1

            95eb26e00d95afd6e38d63d50cb035a2d4ca54b7

            SHA256

            61e03c2717b384e0886a51442e6d83824e67d021451fb92fa6c89f722d349362

            SHA512

            f068f115c2cb929ab80780392ffe53006fb5eb4a0fc0f8763e33b7c5c90266f2651ac9ff4cd169105cf6b2ed352c8f96dd8fc25215891c759257479f61592d2e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0124117e73b94a550c1867292fd2c907

            SHA1

            95eb26e00d95afd6e38d63d50cb035a2d4ca54b7

            SHA256

            61e03c2717b384e0886a51442e6d83824e67d021451fb92fa6c89f722d349362

            SHA512

            f068f115c2cb929ab80780392ffe53006fb5eb4a0fc0f8763e33b7c5c90266f2651ac9ff4cd169105cf6b2ed352c8f96dd8fc25215891c759257479f61592d2e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cfe7cd9367e697f8e8676ec8ea16bed2

            SHA1

            0ff334bf6b0763a19ad0633719c35b2e2d6ed248

            SHA256

            2b5c0ed5f7bc99b7a1f8596042f036644ebd370538c983880c6de5e412e3a50f

            SHA512

            9d57ee64f23555f02f9c2564e60e6f71bdf5d05ba8c214b790cec1f5924826941aa134069a33d36a495ea61fb3eb08bf323adb5515410e98dea37385fc1b5960

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cfe7cd9367e697f8e8676ec8ea16bed2

            SHA1

            0ff334bf6b0763a19ad0633719c35b2e2d6ed248

            SHA256

            2b5c0ed5f7bc99b7a1f8596042f036644ebd370538c983880c6de5e412e3a50f

            SHA512

            9d57ee64f23555f02f9c2564e60e6f71bdf5d05ba8c214b790cec1f5924826941aa134069a33d36a495ea61fb3eb08bf323adb5515410e98dea37385fc1b5960

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fb31170ce0962abc2fb1ca4616861c37

            SHA1

            6f4abe4be508a964d324a615718848b3dd32a3de

            SHA256

            d69f70ccc2c95c145c440aa75de97e1b917759a02ce18650ba322f0cc676b258

            SHA512

            d716ce431e592b40b233aa59ebccd819ba5d68084acba51c3b23153264b0ac66d0ad692b66986f6f9f7b5fbd72214240a5d995d41508f3239c73f87eacb33b62

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e03037fc17b0e4eac1a201061ad5f8b8

            SHA1

            03a1d9307f9149e4b8ed9dc5d32a9dd1e38c5e65

            SHA256

            7b3228a1c4cc1bed3cf846fb293cb3d56c4cbb4fef2f7ad5e5f890a79a9d6830

            SHA512

            6b1e70b972283e4aa641753f87389f694f47a156b7cbecc2535db8da44d220be96515669441466de039f3dcc5a7e9ca22f88a7d14dc84ef7a5c8bad5a40d3691

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b489788df15d6d3497accf96c89457e2

            SHA1

            9244da2f3d221aded5a6cb87b7bd7aec489af3cf

            SHA256

            7c87826152c34aa3a419be3b148716c1f56744d5097a0629cf35d3142ca62d0b

            SHA512

            2af257567dd8a5daafd05622fada0fd965a67da1bb99d71102e42540575ee9f1e3aab3b41dadf7745f52ec5dfde1d772afb55e63ca7dc70b3b1853adf5a32be6

          • memory/824-70-0x0000000000000000-mapping.dmp

          • memory/980-87-0x0000000000000000-mapping.dmp

          • memory/996-86-0x0000000000000000-mapping.dmp

          • memory/1312-58-0x0000000000000000-mapping.dmp

          • memory/1316-57-0x0000000000000000-mapping.dmp

          • memory/1320-76-0x0000000000000000-mapping.dmp

          • memory/1572-80-0x0000000000000000-mapping.dmp

          • memory/1588-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

            Filesize

            8KB

          • memory/1588-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1588-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1616-81-0x0000000000000000-mapping.dmp

          • memory/1692-61-0x0000000000000000-mapping.dmp

          • memory/1744-60-0x0000000000000000-mapping.dmp

          • memory/1900-64-0x0000000000000000-mapping.dmp