Analysis

  • max time kernel
    45s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:19

General

  • Target

    902323736c01d904b700467a74da3f4bfbc644dc21a9c2e39f44d60820839363.exe

  • Size

    601KB

  • MD5

    9ef0eb9965b96e20a3ae5d98f4da985b

  • SHA1

    047ca570914cfdc7d582eef7b0092797bcd9e191

  • SHA256

    902323736c01d904b700467a74da3f4bfbc644dc21a9c2e39f44d60820839363

  • SHA512

    601a265a092b152912b9ab750e21b93563a0c04ae0c7d350e0555449930af065c8d5350dd05af3422d1bfaf6346f55c0d42509035a2d9d6e840c221179e7d5ba

  • SSDEEP

    12288:bIny5DYTOtXhEOCs1IZq70cmW8ICPmMznfp4XJQQfbipA:jUTOtxxKcLCPmMznR43

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\902323736c01d904b700467a74da3f4bfbc644dc21a9c2e39f44d60820839363.exe
    "C:\Users\Admin\AppData\Local\Temp\902323736c01d904b700467a74da3f4bfbc644dc21a9c2e39f44d60820839363.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:1340
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1128
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:960
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1100
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1188
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1008
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1800
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1544
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1344
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1320
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1040
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1812
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1968
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1284

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            abd06bc5adbc91d7231180116f7252ca

            SHA1

            a0dc3bf5db4043b5ae37ba59e92eca13ec1d280d

            SHA256

            216fb994646dbd8daffb293b4e7dbb7ffa407c77c47dd7d4122792253f8cbf05

            SHA512

            d957d76f46d62fc12b8b1e1f1fce11bcb8e93f048f6e3bf3ac110f3e2853e2a358d300502b4bd90e37d735e28fda70ec2061b2a299c364856657230edf6cf2b0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9c003419f20403001aa4f6412126e566

            SHA1

            db65da66a7f5f58f1c3937e06046b3fb4f2086d7

            SHA256

            cf3cf47a2d0faa0f4fc10031943211605d66559132f8813cc659bb0926489b41

            SHA512

            7ec9b781cbdedd55cbfe20a22f3650ca78f07584c407a89e1eec302027dc015dd3e10dd651f368579cc61f48564023573aeeaeffb0f543273d56d43f24f66c8e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            24f7c9f39be8cec086e3abc9b2814f56

            SHA1

            55f4f6f28dc78a5f249cfc4b9a77cc4dcbeb70b1

            SHA256

            5d30226358cb2c2e92f8969432f3bf7fc599c39a8aa47ea91eeae44eba58a512

            SHA512

            3227c6baccd35085e85b41fd4f2e7c7b2d39b61559c67b03c2745202412425ec1148b413a8a653c88767cc5c54659315d66c1bc6d1a1f868e421b109cc2f7b3e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3744c9782bfe50c8d71a0202b40b7e18

            SHA1

            3594137d6564ae2906d73680a1168241ded717d0

            SHA256

            b9a64d629d5a6b3aa6d2b0f6fd990a6eaf29f7df0c5f09a8cde8dcf13ba4fec1

            SHA512

            19f0c8c524d13d460a4afe6620a50a1403fa303378ef119aed4536ae9c9f614490fd1b0ef01d453363841ba67b0114a49845fec9f3fd262df9c0a2379eb87044

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3744c9782bfe50c8d71a0202b40b7e18

            SHA1

            3594137d6564ae2906d73680a1168241ded717d0

            SHA256

            b9a64d629d5a6b3aa6d2b0f6fd990a6eaf29f7df0c5f09a8cde8dcf13ba4fec1

            SHA512

            19f0c8c524d13d460a4afe6620a50a1403fa303378ef119aed4536ae9c9f614490fd1b0ef01d453363841ba67b0114a49845fec9f3fd262df9c0a2379eb87044

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            49ce75ff7b0449df4e34521ab139edfa

            SHA1

            92bcd387a0cb95e87cbe2e0b7cb207e2c555016e

            SHA256

            3bf30459002d1f78ba861b87d7bf7e98d500f2c0c33bd63cc3dc1cb1a335f8c9

            SHA512

            e5219a8fe459a70c2971b53f2f625920eb736bc87e0ba2f0d210dd510c0d1bf7633a470cc7922022e8f866359079fef9a33718d3c518a4ded682f2a959ca967d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            49ce75ff7b0449df4e34521ab139edfa

            SHA1

            92bcd387a0cb95e87cbe2e0b7cb207e2c555016e

            SHA256

            3bf30459002d1f78ba861b87d7bf7e98d500f2c0c33bd63cc3dc1cb1a335f8c9

            SHA512

            e5219a8fe459a70c2971b53f2f625920eb736bc87e0ba2f0d210dd510c0d1bf7633a470cc7922022e8f866359079fef9a33718d3c518a4ded682f2a959ca967d

          • \Users\Admin\AppData\Local\Temp\nsj21B7.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj21B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj21B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj21B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj21B7.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            abd06bc5adbc91d7231180116f7252ca

            SHA1

            a0dc3bf5db4043b5ae37ba59e92eca13ec1d280d

            SHA256

            216fb994646dbd8daffb293b4e7dbb7ffa407c77c47dd7d4122792253f8cbf05

            SHA512

            d957d76f46d62fc12b8b1e1f1fce11bcb8e93f048f6e3bf3ac110f3e2853e2a358d300502b4bd90e37d735e28fda70ec2061b2a299c364856657230edf6cf2b0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            abd06bc5adbc91d7231180116f7252ca

            SHA1

            a0dc3bf5db4043b5ae37ba59e92eca13ec1d280d

            SHA256

            216fb994646dbd8daffb293b4e7dbb7ffa407c77c47dd7d4122792253f8cbf05

            SHA512

            d957d76f46d62fc12b8b1e1f1fce11bcb8e93f048f6e3bf3ac110f3e2853e2a358d300502b4bd90e37d735e28fda70ec2061b2a299c364856657230edf6cf2b0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            abd06bc5adbc91d7231180116f7252ca

            SHA1

            a0dc3bf5db4043b5ae37ba59e92eca13ec1d280d

            SHA256

            216fb994646dbd8daffb293b4e7dbb7ffa407c77c47dd7d4122792253f8cbf05

            SHA512

            d957d76f46d62fc12b8b1e1f1fce11bcb8e93f048f6e3bf3ac110f3e2853e2a358d300502b4bd90e37d735e28fda70ec2061b2a299c364856657230edf6cf2b0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9c003419f20403001aa4f6412126e566

            SHA1

            db65da66a7f5f58f1c3937e06046b3fb4f2086d7

            SHA256

            cf3cf47a2d0faa0f4fc10031943211605d66559132f8813cc659bb0926489b41

            SHA512

            7ec9b781cbdedd55cbfe20a22f3650ca78f07584c407a89e1eec302027dc015dd3e10dd651f368579cc61f48564023573aeeaeffb0f543273d56d43f24f66c8e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9c003419f20403001aa4f6412126e566

            SHA1

            db65da66a7f5f58f1c3937e06046b3fb4f2086d7

            SHA256

            cf3cf47a2d0faa0f4fc10031943211605d66559132f8813cc659bb0926489b41

            SHA512

            7ec9b781cbdedd55cbfe20a22f3650ca78f07584c407a89e1eec302027dc015dd3e10dd651f368579cc61f48564023573aeeaeffb0f543273d56d43f24f66c8e

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            24f7c9f39be8cec086e3abc9b2814f56

            SHA1

            55f4f6f28dc78a5f249cfc4b9a77cc4dcbeb70b1

            SHA256

            5d30226358cb2c2e92f8969432f3bf7fc599c39a8aa47ea91eeae44eba58a512

            SHA512

            3227c6baccd35085e85b41fd4f2e7c7b2d39b61559c67b03c2745202412425ec1148b413a8a653c88767cc5c54659315d66c1bc6d1a1f868e421b109cc2f7b3e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3744c9782bfe50c8d71a0202b40b7e18

            SHA1

            3594137d6564ae2906d73680a1168241ded717d0

            SHA256

            b9a64d629d5a6b3aa6d2b0f6fd990a6eaf29f7df0c5f09a8cde8dcf13ba4fec1

            SHA512

            19f0c8c524d13d460a4afe6620a50a1403fa303378ef119aed4536ae9c9f614490fd1b0ef01d453363841ba67b0114a49845fec9f3fd262df9c0a2379eb87044

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            49ce75ff7b0449df4e34521ab139edfa

            SHA1

            92bcd387a0cb95e87cbe2e0b7cb207e2c555016e

            SHA256

            3bf30459002d1f78ba861b87d7bf7e98d500f2c0c33bd63cc3dc1cb1a335f8c9

            SHA512

            e5219a8fe459a70c2971b53f2f625920eb736bc87e0ba2f0d210dd510c0d1bf7633a470cc7922022e8f866359079fef9a33718d3c518a4ded682f2a959ca967d

          • memory/960-58-0x0000000000000000-mapping.dmp

          • memory/1008-64-0x0000000000000000-mapping.dmp

          • memory/1040-86-0x0000000000000000-mapping.dmp

          • memory/1100-61-0x0000000000000000-mapping.dmp

          • memory/1128-57-0x0000000000000000-mapping.dmp

          • memory/1188-62-0x0000000000000000-mapping.dmp

          • memory/1320-81-0x0000000000000000-mapping.dmp

          • memory/1340-54-0x00000000758B1000-0x00000000758B3000-memory.dmp

            Filesize

            8KB

          • memory/1340-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1340-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1344-80-0x0000000000000000-mapping.dmp

          • memory/1544-76-0x0000000000000000-mapping.dmp

          • memory/1800-70-0x0000000000000000-mapping.dmp

          • memory/1812-87-0x0000000000000000-mapping.dmp