Analysis

  • max time kernel
    59s
  • 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 10:28

General

  • Target

    397e93252180e7ad9922e40fd83b4cf0b184b43aed4bef9ff0ecb48c0b25363d.exe

  • Size

    602KB

  • MD5

    9f8da83e449e4b90b52d36a520b499f2

  • SHA1

    50938ace5cc003a030353738ef46567072ee7336

  • SHA256

    397e93252180e7ad9922e40fd83b4cf0b184b43aed4bef9ff0ecb48c0b25363d

  • SHA512

    36bdfdd6c49906cbd8500a1be0cfead6e406d33c6b54a27b42d1d947feeca0a85c16d5457a57a95b7e2a600de82ccc4d518c960fbdfe72510a642bbb209cc4c3

  • SSDEEP

    12288:nIny5DYTg+CcBelX0MEBQYOe1Y2TpOtguNjFDJLoZ/mnftyq:vUTg+NRHzogqXY/Gy

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\397e93252180e7ad9922e40fd83b4cf0b184b43aed4bef9ff0ecb48c0b25363d.exe
    "C:\Users\Admin\AppData\Local\Temp\397e93252180e7ad9922e40fd83b4cf0b184b43aed4bef9ff0ecb48c0b25363d.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:864
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1932
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:516
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1704
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1504
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1224
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:624
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1792
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1936
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1100
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1680
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:820
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1628
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1384

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            00d9965b61c7f778dc290aca5082a06f

            SHA1

            80e3366b9fb8244e75a5f8dd854fe29a26aeef08

            SHA256

            ea2306914b143e758f8ed6073c98d2af27380f2999820d5464470433bd82f131

            SHA512

            9ef6b97881a46452504d8f8c3cd8bb032e0e0b66c2e11111505816a7731581c008692ee5280cf5e19cc37ff3ec023cdd5ae4cd19113f9b89c13e75a19ea4fd3a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            875721df3a4ec74dfd4cdef5d2b964cc

            SHA1

            b8d6ef2e0b42cdc72ec2878c61e0295bebe07891

            SHA256

            26d67a1e4b1367f00e29089157e5c30f969afde2285554e7bc2faa94213df1ad

            SHA512

            7062bd22f7f7a3861f114cbc1844bfc1f1b3bd4654b578c3dbf4230e9a1da82c6e4eb076588fbb41e46152dd98d2b6661754e717fd421e17b79b234bbb15ff3b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a29f197392ce8d67365e185388fdab00

            SHA1

            6dc8da6f2490a4c72e2cfe4f5813b9429a650e62

            SHA256

            218c12d3ac51d13a3b78b55ea040417a269f8f9c60bd0d7be702b9957cac66b0

            SHA512

            4efa76ea640dac9e8ce893f645ba0c5b5e67532597d54f4e61a5f29c4020eae5ef468eebb17c76b2995a590a19168ccf7c19f7f90ca321355040adf015a6804e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2be90142d7cf26c9dce31cf8fad28e44

            SHA1

            7edc6b077ee3c227a3bc4e586d91cb83d5c729ae

            SHA256

            c1e50263778024b8a1b18f6318fb2a2e227deb7fddbf03fa7812ad69ff6acad7

            SHA512

            6f7a85446f520cec388c632f3a0e90077e469e23fe85151c591ea61567a6fbee21e15c2a800266441ac11797b389640e3c4ec6cf73bc430fa582e427050d0926

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2be90142d7cf26c9dce31cf8fad28e44

            SHA1

            7edc6b077ee3c227a3bc4e586d91cb83d5c729ae

            SHA256

            c1e50263778024b8a1b18f6318fb2a2e227deb7fddbf03fa7812ad69ff6acad7

            SHA512

            6f7a85446f520cec388c632f3a0e90077e469e23fe85151c591ea61567a6fbee21e15c2a800266441ac11797b389640e3c4ec6cf73bc430fa582e427050d0926

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d210622481f4d069b4811daeec51cfa

            SHA1

            96030991903909132444c952510e9a71133799fe

            SHA256

            8ba06f851d38805f340d2cd126e06388019edb3baa146d5212e756561ee0ba3e

            SHA512

            72c6a77b3311f13d92c7725ae8765a6278dd2a9b68a27a35dfa71fa38bcecf515909cc84e3e0bbc1257c671cf019057bd69418691d2ebfc86f5662cee54c19aa

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d210622481f4d069b4811daeec51cfa

            SHA1

            96030991903909132444c952510e9a71133799fe

            SHA256

            8ba06f851d38805f340d2cd126e06388019edb3baa146d5212e756561ee0ba3e

            SHA512

            72c6a77b3311f13d92c7725ae8765a6278dd2a9b68a27a35dfa71fa38bcecf515909cc84e3e0bbc1257c671cf019057bd69418691d2ebfc86f5662cee54c19aa

          • \Users\Admin\AppData\Local\Temp\nsjD491.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjD491.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjD491.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjD491.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjD491.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            00d9965b61c7f778dc290aca5082a06f

            SHA1

            80e3366b9fb8244e75a5f8dd854fe29a26aeef08

            SHA256

            ea2306914b143e758f8ed6073c98d2af27380f2999820d5464470433bd82f131

            SHA512

            9ef6b97881a46452504d8f8c3cd8bb032e0e0b66c2e11111505816a7731581c008692ee5280cf5e19cc37ff3ec023cdd5ae4cd19113f9b89c13e75a19ea4fd3a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            00d9965b61c7f778dc290aca5082a06f

            SHA1

            80e3366b9fb8244e75a5f8dd854fe29a26aeef08

            SHA256

            ea2306914b143e758f8ed6073c98d2af27380f2999820d5464470433bd82f131

            SHA512

            9ef6b97881a46452504d8f8c3cd8bb032e0e0b66c2e11111505816a7731581c008692ee5280cf5e19cc37ff3ec023cdd5ae4cd19113f9b89c13e75a19ea4fd3a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            00d9965b61c7f778dc290aca5082a06f

            SHA1

            80e3366b9fb8244e75a5f8dd854fe29a26aeef08

            SHA256

            ea2306914b143e758f8ed6073c98d2af27380f2999820d5464470433bd82f131

            SHA512

            9ef6b97881a46452504d8f8c3cd8bb032e0e0b66c2e11111505816a7731581c008692ee5280cf5e19cc37ff3ec023cdd5ae4cd19113f9b89c13e75a19ea4fd3a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            875721df3a4ec74dfd4cdef5d2b964cc

            SHA1

            b8d6ef2e0b42cdc72ec2878c61e0295bebe07891

            SHA256

            26d67a1e4b1367f00e29089157e5c30f969afde2285554e7bc2faa94213df1ad

            SHA512

            7062bd22f7f7a3861f114cbc1844bfc1f1b3bd4654b578c3dbf4230e9a1da82c6e4eb076588fbb41e46152dd98d2b6661754e717fd421e17b79b234bbb15ff3b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            875721df3a4ec74dfd4cdef5d2b964cc

            SHA1

            b8d6ef2e0b42cdc72ec2878c61e0295bebe07891

            SHA256

            26d67a1e4b1367f00e29089157e5c30f969afde2285554e7bc2faa94213df1ad

            SHA512

            7062bd22f7f7a3861f114cbc1844bfc1f1b3bd4654b578c3dbf4230e9a1da82c6e4eb076588fbb41e46152dd98d2b6661754e717fd421e17b79b234bbb15ff3b

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a29f197392ce8d67365e185388fdab00

            SHA1

            6dc8da6f2490a4c72e2cfe4f5813b9429a650e62

            SHA256

            218c12d3ac51d13a3b78b55ea040417a269f8f9c60bd0d7be702b9957cac66b0

            SHA512

            4efa76ea640dac9e8ce893f645ba0c5b5e67532597d54f4e61a5f29c4020eae5ef468eebb17c76b2995a590a19168ccf7c19f7f90ca321355040adf015a6804e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2be90142d7cf26c9dce31cf8fad28e44

            SHA1

            7edc6b077ee3c227a3bc4e586d91cb83d5c729ae

            SHA256

            c1e50263778024b8a1b18f6318fb2a2e227deb7fddbf03fa7812ad69ff6acad7

            SHA512

            6f7a85446f520cec388c632f3a0e90077e469e23fe85151c591ea61567a6fbee21e15c2a800266441ac11797b389640e3c4ec6cf73bc430fa582e427050d0926

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d210622481f4d069b4811daeec51cfa

            SHA1

            96030991903909132444c952510e9a71133799fe

            SHA256

            8ba06f851d38805f340d2cd126e06388019edb3baa146d5212e756561ee0ba3e

            SHA512

            72c6a77b3311f13d92c7725ae8765a6278dd2a9b68a27a35dfa71fa38bcecf515909cc84e3e0bbc1257c671cf019057bd69418691d2ebfc86f5662cee54c19aa

          • memory/516-59-0x0000000000000000-mapping.dmp

          • memory/624-70-0x0000000000000000-mapping.dmp

          • memory/820-87-0x0000000000000000-mapping.dmp

          • memory/864-54-0x0000000076B51000-0x0000000076B53000-memory.dmp

            Filesize

            8KB

          • memory/864-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/864-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1100-81-0x0000000000000000-mapping.dmp

          • memory/1224-64-0x0000000000000000-mapping.dmp

          • memory/1504-62-0x0000000000000000-mapping.dmp

          • memory/1680-86-0x0000000000000000-mapping.dmp

          • memory/1704-61-0x0000000000000000-mapping.dmp

          • memory/1792-76-0x0000000000000000-mapping.dmp

          • memory/1932-58-0x0000000000000000-mapping.dmp

          • memory/1936-80-0x0000000000000000-mapping.dmp