Analysis

  • max time kernel
    45s
  • 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 10:26

General

  • Target

    499f95dc1b1808a8f57dea499e9f9190caa8727dae9bd969f19e8acf68d9117e.exe

  • Size

    602KB

  • MD5

    1d71638d13c500e299fbe803358e4497

  • SHA1

    2b50a073cbad5b771a2f34ffea884c28d6e60651

  • SHA256

    499f95dc1b1808a8f57dea499e9f9190caa8727dae9bd969f19e8acf68d9117e

  • SHA512

    c22a77ef19a4646e2b655f95bc5f46ae50e708d9b352e693f5127992ab0b469ebcab0387e749190e602c3396f59748abd0bcfb41303864d54d361364995d1f39

  • SSDEEP

    12288:YIny5DYTcIYOb45lGXEfRLORLtPawvoJd+34ebtOpYT:2UTcHz5l9RLIV0e34eb

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\499f95dc1b1808a8f57dea499e9f9190caa8727dae9bd969f19e8acf68d9117e.exe
    "C:\Users\Admin\AppData\Local\Temp\499f95dc1b1808a8f57dea499e9f9190caa8727dae9bd969f19e8acf68d9117e.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:2032
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:332
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1492
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:532
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1120
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:884
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1640
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1944
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1708
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1836
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:620
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:652
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1648
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1552

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            80f53784765078836c223d1fad8457a5

            SHA1

            dc44194c0870a326e939f7cfc8202e1d47ee0b60

            SHA256

            1b137d391ae40b0e2e3a008476a39d988381ea04e33b1048340dea095e1c54ce

            SHA512

            1e1ebb6c0d42b102f2a40f2496681942b9ecfb6c491352f02672837ac02cd5c6c317512352862500074dc902e653afe8903c3e40082cefe44423e9df669d801b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            379170fe09381e3969de956b1451fbc0

            SHA1

            2f3c474e9826063b30d9622ba5388e6059078622

            SHA256

            cab90cc78b6dcaff59878a32706c944975d8fd072d16f87b1b045ee8a654bad2

            SHA512

            18693499f0920406bfda938b29c3cf2796b958fd7ba250875a1557317166ef0ccbaf5414bf2812bb9ac4dc9e71da7796716f690916f251b86d1ed10410c91405

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a2132e098c98af6bb6d7365145a5df0a

            SHA1

            87a9825584a56cd4746e6e50781336d9fa6bf799

            SHA256

            04209ac79740c33792685013db5304a7ffd887d50171685eae0ba3e15338ac08

            SHA512

            7cb9bf1b3d353ee574670d9f9a339d7f85d6a0d0e8b4fdf7f585bea683ace601ff0d506e6721137bc44b571c0cbaefefd5b88c5a912f3d3ec40770b448516072

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            74e37794fe94832d8c4874840085a310

            SHA1

            6c686879da494a3e5786e31082961d372fe1e3ef

            SHA256

            0c6c26e9eb0618f6984f7ed7f9c9441c0fbae785f38dd715b6430b761bc735c5

            SHA512

            18f4355fb6f2b9b81bbef5baafb5ed53712a02a5798fc57dad41b85b97fcf490697193a29ef40bd902d1635943f84e12eff6c347ec5e52acc72bb0d097581d44

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            74e37794fe94832d8c4874840085a310

            SHA1

            6c686879da494a3e5786e31082961d372fe1e3ef

            SHA256

            0c6c26e9eb0618f6984f7ed7f9c9441c0fbae785f38dd715b6430b761bc735c5

            SHA512

            18f4355fb6f2b9b81bbef5baafb5ed53712a02a5798fc57dad41b85b97fcf490697193a29ef40bd902d1635943f84e12eff6c347ec5e52acc72bb0d097581d44

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a68fb08030f526b6032344aff1c377e6

            SHA1

            8f02f602f0933c84cfab12a7a06a80d92de75de5

            SHA256

            f36e041d089b4f52692abe187cb2debd6f0472bf5c90620fb102c18062fb2d1e

            SHA512

            40a0c3ea288f3d5d0d67a7e3fbe1fc520d0fb7fdafbd27918616d96055653eaf23ee6828333cf8bad7b34e719977627bba4f3212568a51f09c21daf9668aebbb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a68fb08030f526b6032344aff1c377e6

            SHA1

            8f02f602f0933c84cfab12a7a06a80d92de75de5

            SHA256

            f36e041d089b4f52692abe187cb2debd6f0472bf5c90620fb102c18062fb2d1e

            SHA512

            40a0c3ea288f3d5d0d67a7e3fbe1fc520d0fb7fdafbd27918616d96055653eaf23ee6828333cf8bad7b34e719977627bba4f3212568a51f09c21daf9668aebbb

          • \Users\Admin\AppData\Local\Temp\nso7DDA.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso7DDA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso7DDA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso7DDA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso7DDA.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            80f53784765078836c223d1fad8457a5

            SHA1

            dc44194c0870a326e939f7cfc8202e1d47ee0b60

            SHA256

            1b137d391ae40b0e2e3a008476a39d988381ea04e33b1048340dea095e1c54ce

            SHA512

            1e1ebb6c0d42b102f2a40f2496681942b9ecfb6c491352f02672837ac02cd5c6c317512352862500074dc902e653afe8903c3e40082cefe44423e9df669d801b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            80f53784765078836c223d1fad8457a5

            SHA1

            dc44194c0870a326e939f7cfc8202e1d47ee0b60

            SHA256

            1b137d391ae40b0e2e3a008476a39d988381ea04e33b1048340dea095e1c54ce

            SHA512

            1e1ebb6c0d42b102f2a40f2496681942b9ecfb6c491352f02672837ac02cd5c6c317512352862500074dc902e653afe8903c3e40082cefe44423e9df669d801b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            80f53784765078836c223d1fad8457a5

            SHA1

            dc44194c0870a326e939f7cfc8202e1d47ee0b60

            SHA256

            1b137d391ae40b0e2e3a008476a39d988381ea04e33b1048340dea095e1c54ce

            SHA512

            1e1ebb6c0d42b102f2a40f2496681942b9ecfb6c491352f02672837ac02cd5c6c317512352862500074dc902e653afe8903c3e40082cefe44423e9df669d801b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            379170fe09381e3969de956b1451fbc0

            SHA1

            2f3c474e9826063b30d9622ba5388e6059078622

            SHA256

            cab90cc78b6dcaff59878a32706c944975d8fd072d16f87b1b045ee8a654bad2

            SHA512

            18693499f0920406bfda938b29c3cf2796b958fd7ba250875a1557317166ef0ccbaf5414bf2812bb9ac4dc9e71da7796716f690916f251b86d1ed10410c91405

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            379170fe09381e3969de956b1451fbc0

            SHA1

            2f3c474e9826063b30d9622ba5388e6059078622

            SHA256

            cab90cc78b6dcaff59878a32706c944975d8fd072d16f87b1b045ee8a654bad2

            SHA512

            18693499f0920406bfda938b29c3cf2796b958fd7ba250875a1557317166ef0ccbaf5414bf2812bb9ac4dc9e71da7796716f690916f251b86d1ed10410c91405

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a2132e098c98af6bb6d7365145a5df0a

            SHA1

            87a9825584a56cd4746e6e50781336d9fa6bf799

            SHA256

            04209ac79740c33792685013db5304a7ffd887d50171685eae0ba3e15338ac08

            SHA512

            7cb9bf1b3d353ee574670d9f9a339d7f85d6a0d0e8b4fdf7f585bea683ace601ff0d506e6721137bc44b571c0cbaefefd5b88c5a912f3d3ec40770b448516072

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            74e37794fe94832d8c4874840085a310

            SHA1

            6c686879da494a3e5786e31082961d372fe1e3ef

            SHA256

            0c6c26e9eb0618f6984f7ed7f9c9441c0fbae785f38dd715b6430b761bc735c5

            SHA512

            18f4355fb6f2b9b81bbef5baafb5ed53712a02a5798fc57dad41b85b97fcf490697193a29ef40bd902d1635943f84e12eff6c347ec5e52acc72bb0d097581d44

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a68fb08030f526b6032344aff1c377e6

            SHA1

            8f02f602f0933c84cfab12a7a06a80d92de75de5

            SHA256

            f36e041d089b4f52692abe187cb2debd6f0472bf5c90620fb102c18062fb2d1e

            SHA512

            40a0c3ea288f3d5d0d67a7e3fbe1fc520d0fb7fdafbd27918616d96055653eaf23ee6828333cf8bad7b34e719977627bba4f3212568a51f09c21daf9668aebbb

          • memory/332-57-0x0000000000000000-mapping.dmp

          • memory/532-60-0x0000000000000000-mapping.dmp

          • memory/620-87-0x0000000000000000-mapping.dmp

          • memory/652-88-0x0000000000000000-mapping.dmp

          • memory/884-64-0x0000000000000000-mapping.dmp

          • memory/1120-61-0x0000000000000000-mapping.dmp

          • memory/1492-58-0x0000000000000000-mapping.dmp

          • memory/1640-71-0x0000000000000000-mapping.dmp

          • memory/1708-81-0x0000000000000000-mapping.dmp

          • memory/1836-82-0x0000000000000000-mapping.dmp

          • memory/1944-77-0x0000000000000000-mapping.dmp

          • memory/2032-54-0x00000000767B1000-0x00000000767B3000-memory.dmp

            Filesize

            8KB

          • memory/2032-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2032-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2032-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB