Analysis

  • max time kernel
    52s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:18

General

  • Target

    9cb7b4ee670775a51670477c14d5993e27829909a890274df47af992bedc19b6.exe

  • Size

    601KB

  • MD5

    98794db85c5fbd8705fcc439f7a2c06a

  • SHA1

    65c8e38af309be8f7258090d6cdc6a67eb485fdd

  • SHA256

    9cb7b4ee670775a51670477c14d5993e27829909a890274df47af992bedc19b6

  • SHA512

    4ffb12db318bd6c148e2bfd342d8072efe0d2211e5c185c95b8076d7a354b4c7f0c07cbd2d0ccd0b1c6eb49c26b6f8b22ee3bed67c2754ac15f5516e570f5ed3

  • SSDEEP

    12288:tIny5DYTjgwDcd+nVg4lXEhryVReVcwmtRiW6wZXD3hP2OyaSW3:5UTMwDcCS4lKmHeKwaAWvFReXW

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\9cb7b4ee670775a51670477c14d5993e27829909a890274df47af992bedc19b6.exe
    "C:\Users\Admin\AppData\Local\Temp\9cb7b4ee670775a51670477c14d5993e27829909a890274df47af992bedc19b6.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:944
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:276
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:376
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1180
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1532
        • 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:792
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:852
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1872
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:820
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1740
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:612
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1620
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1412

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b859a901f2e203e32e6371a977c770b2

            SHA1

            2184e3bfd4e77e5cb4598a7d0e22d6254819eadf

            SHA256

            6e85d4ec6526e9a99877e95106bf43b1c1f89e492411d86264cc70ad6ae9e85d

            SHA512

            a5e027d5c979d96436a8058e297dbf430e5190bb469464a2cc68a2650875c9ce32631279cb9a0b86929747fd772ef853d283e6c5ded5d0ef043035d3248a1ede

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            360bcc881253eec2a9dc5d7b914483c2

            SHA1

            d9c1f8bd92463e8775c180fb948ed67903f62cde

            SHA256

            b489b104b12f15217452e64533943abe490d496be71160232be5f824ef084f13

            SHA512

            fe4d3e750b6f9a32f57b2d1807835f00af527c7165e88203a9f121289b5bd98542759812cb3b4a62fdb8e250e303668d9f47b3ad58ad2a65727d79daf092d256

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            90fb253e2f5718e3b3fa7bdbf710ae91

            SHA1

            65b4aff7040e9673afc68d7c015b3e3db712b313

            SHA256

            b7a322282056795003729e15f0debe8215756c4f1368b0b4c00ec8b3a8a8ba8a

            SHA512

            a87aab95c747348bae89a2099d76aec12f22f4b12bb60ef088cfd5ef7977390a517ee39e5f445560233e1a74db4d00e40a076b97ae7c8e003dab10701ce98512

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            6d6751df6c1942b12c65ecbbb0a3be31

            SHA1

            444f2ad6ed704ec117095b79d37f38c5c1db9a0a

            SHA256

            255ae1e2232f96ebe71678bae1c52c74403d7fbcc8173a7d7fac807c0e89a94d

            SHA512

            f6febed273e387572fc9de9b3b78229c449e23c48068313b3c8ca7ebbf4eb2e168cd10551229c91ecab050d67dee49364f2f03b5a675558b893531535f672a09

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            6d6751df6c1942b12c65ecbbb0a3be31

            SHA1

            444f2ad6ed704ec117095b79d37f38c5c1db9a0a

            SHA256

            255ae1e2232f96ebe71678bae1c52c74403d7fbcc8173a7d7fac807c0e89a94d

            SHA512

            f6febed273e387572fc9de9b3b78229c449e23c48068313b3c8ca7ebbf4eb2e168cd10551229c91ecab050d67dee49364f2f03b5a675558b893531535f672a09

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            aeed8d1ace4b6926a84903f07cefdbc6

            SHA1

            7d20b76039dd3dd52686f318df2d9e4d0380e85c

            SHA256

            be63256c6515fffd81d1be41f93bdf375e350475e7c479b2c06a067b437fce56

            SHA512

            f367f4b205a2d9a489e8cffb645aef939d0d003803c2da099b7f90f17b7d484459c63dba90e1b6bc8d199fae9c08b458e031ced6311fd8513a9828f1f39f99cb

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            aeed8d1ace4b6926a84903f07cefdbc6

            SHA1

            7d20b76039dd3dd52686f318df2d9e4d0380e85c

            SHA256

            be63256c6515fffd81d1be41f93bdf375e350475e7c479b2c06a067b437fce56

            SHA512

            f367f4b205a2d9a489e8cffb645aef939d0d003803c2da099b7f90f17b7d484459c63dba90e1b6bc8d199fae9c08b458e031ced6311fd8513a9828f1f39f99cb

          • \Users\Admin\AppData\Local\Temp\nsjA863.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjA863.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjA863.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjA863.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjA863.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b859a901f2e203e32e6371a977c770b2

            SHA1

            2184e3bfd4e77e5cb4598a7d0e22d6254819eadf

            SHA256

            6e85d4ec6526e9a99877e95106bf43b1c1f89e492411d86264cc70ad6ae9e85d

            SHA512

            a5e027d5c979d96436a8058e297dbf430e5190bb469464a2cc68a2650875c9ce32631279cb9a0b86929747fd772ef853d283e6c5ded5d0ef043035d3248a1ede

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b859a901f2e203e32e6371a977c770b2

            SHA1

            2184e3bfd4e77e5cb4598a7d0e22d6254819eadf

            SHA256

            6e85d4ec6526e9a99877e95106bf43b1c1f89e492411d86264cc70ad6ae9e85d

            SHA512

            a5e027d5c979d96436a8058e297dbf430e5190bb469464a2cc68a2650875c9ce32631279cb9a0b86929747fd772ef853d283e6c5ded5d0ef043035d3248a1ede

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            b859a901f2e203e32e6371a977c770b2

            SHA1

            2184e3bfd4e77e5cb4598a7d0e22d6254819eadf

            SHA256

            6e85d4ec6526e9a99877e95106bf43b1c1f89e492411d86264cc70ad6ae9e85d

            SHA512

            a5e027d5c979d96436a8058e297dbf430e5190bb469464a2cc68a2650875c9ce32631279cb9a0b86929747fd772ef853d283e6c5ded5d0ef043035d3248a1ede

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            360bcc881253eec2a9dc5d7b914483c2

            SHA1

            d9c1f8bd92463e8775c180fb948ed67903f62cde

            SHA256

            b489b104b12f15217452e64533943abe490d496be71160232be5f824ef084f13

            SHA512

            fe4d3e750b6f9a32f57b2d1807835f00af527c7165e88203a9f121289b5bd98542759812cb3b4a62fdb8e250e303668d9f47b3ad58ad2a65727d79daf092d256

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            360bcc881253eec2a9dc5d7b914483c2

            SHA1

            d9c1f8bd92463e8775c180fb948ed67903f62cde

            SHA256

            b489b104b12f15217452e64533943abe490d496be71160232be5f824ef084f13

            SHA512

            fe4d3e750b6f9a32f57b2d1807835f00af527c7165e88203a9f121289b5bd98542759812cb3b4a62fdb8e250e303668d9f47b3ad58ad2a65727d79daf092d256

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            90fb253e2f5718e3b3fa7bdbf710ae91

            SHA1

            65b4aff7040e9673afc68d7c015b3e3db712b313

            SHA256

            b7a322282056795003729e15f0debe8215756c4f1368b0b4c00ec8b3a8a8ba8a

            SHA512

            a87aab95c747348bae89a2099d76aec12f22f4b12bb60ef088cfd5ef7977390a517ee39e5f445560233e1a74db4d00e40a076b97ae7c8e003dab10701ce98512

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            6d6751df6c1942b12c65ecbbb0a3be31

            SHA1

            444f2ad6ed704ec117095b79d37f38c5c1db9a0a

            SHA256

            255ae1e2232f96ebe71678bae1c52c74403d7fbcc8173a7d7fac807c0e89a94d

            SHA512

            f6febed273e387572fc9de9b3b78229c449e23c48068313b3c8ca7ebbf4eb2e168cd10551229c91ecab050d67dee49364f2f03b5a675558b893531535f672a09

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            aeed8d1ace4b6926a84903f07cefdbc6

            SHA1

            7d20b76039dd3dd52686f318df2d9e4d0380e85c

            SHA256

            be63256c6515fffd81d1be41f93bdf375e350475e7c479b2c06a067b437fce56

            SHA512

            f367f4b205a2d9a489e8cffb645aef939d0d003803c2da099b7f90f17b7d484459c63dba90e1b6bc8d199fae9c08b458e031ced6311fd8513a9828f1f39f99cb

          • memory/276-58-0x0000000000000000-mapping.dmp
          • memory/376-59-0x0000000000000000-mapping.dmp
          • memory/612-87-0x0000000000000000-mapping.dmp
          • memory/792-70-0x0000000000000000-mapping.dmp
          • memory/820-81-0x0000000000000000-mapping.dmp
          • memory/852-76-0x0000000000000000-mapping.dmp
          • memory/884-64-0x0000000000000000-mapping.dmp
          • memory/944-54-0x0000000074F01000-0x0000000074F03000-memory.dmp
            Filesize

            8KB

          • memory/944-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/944-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1180-61-0x0000000000000000-mapping.dmp
          • memory/1532-62-0x0000000000000000-mapping.dmp
          • memory/1740-86-0x0000000000000000-mapping.dmp
          • memory/1872-80-0x0000000000000000-mapping.dmp