Analysis

  • max time kernel
    49s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    8630a3d26aac42b3af2e5c27859f29e95216610f4990fc107808203659a5fde2.exe

  • Size

    602KB

  • MD5

    e9630593da10ddf900b3965dc16d6191

  • SHA1

    0bc7861949359c34a666117bd8b656cd921a4cbb

  • SHA256

    8630a3d26aac42b3af2e5c27859f29e95216610f4990fc107808203659a5fde2

  • SHA512

    847f429a2b3537384778ab994ed83a1e1fdb2ff2fa5a2d321c362e00bbac46a05c4a0ef36236465691d0fa9a9c25d37f1f9c7dae5dd00d0b75b2488c74b37422

  • SSDEEP

    12288:FIny5DYTgxqTayQbuVCRYO6JlAwgOx0Mgk+couRRWvR:xUTgxUd8mO6kwLx0RjNuHWvR

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\8630a3d26aac42b3af2e5c27859f29e95216610f4990fc107808203659a5fde2.exe
    "C:\Users\Admin\AppData\Local\Temp\8630a3d26aac42b3af2e5c27859f29e95216610f4990fc107808203659a5fde2.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:1680
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2012
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1928
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1992
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1968
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1948
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1420
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1620
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:828
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:452
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:576
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:364
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1452

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a4ac26bc3ddec934a243556a6b60813

            SHA1

            3dad5a2bdeaa73cac584d763a8b7aa758c72ad6d

            SHA256

            b868cd38064082b6d8afd676f027c82382df69a975cb2e3d1e39c86752910499

            SHA512

            5a7b17e4e8aefaf6d22dbc9911a5a21dff5a660569f5e2497ff660b450bcde8ddde70b658b760a12f4e29ea8a6208263a59e55a91f579884d0d23043ed12b1bf

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            431310cce5246ffb8f73b2279a5f949d

            SHA1

            b8703647bdd4b55886955fe1ddacea64936d73fe

            SHA256

            420778d8f226ab7a7cedb3b63893518c9b2fad3c0735f0ac718f9442ee8239e5

            SHA512

            5da8bbb2c2398b6e649c4f1da9872d6586e1da81d9706e9fe6b206a0d0b7ace6940eb8da7f33b59aedf371f600a7458ef2e1dc5a8436564528a7d50af5dc46c1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d47cc46319c83f95b2095d02fe28393e

            SHA1

            e5028b0b3302fd6f315de9eb52e33fc89a07a0aa

            SHA256

            fee7f53331dfd08b7bc78bef726a5723cb1fd6be579bcd2e4cc6d8f9385637b7

            SHA512

            1b96c8d021d36321e1a4b3e54ded7b7b59eea71610934f48fd6bf15c7060e622b91d9099becf94d52386c7614962993783bf04e8eece8ce2907bbebdc44526f9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            481e9fd663dc108c217859b1a0078c0b

            SHA1

            453df751fcaa117e26c02f7a54f803f65bdff0ce

            SHA256

            8d32aaaee30e90fd46619510ad464edb1df5f3e76a4ec274f75a12c5d7833535

            SHA512

            93f0d42d721d37821f15454da8100794adfbb7aa491d5419fd2e540362c3b1b9d7d7240d1599497cc6890f4d9d1413f453ed8c4f60069af476d34ab9c2ccbab9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            481e9fd663dc108c217859b1a0078c0b

            SHA1

            453df751fcaa117e26c02f7a54f803f65bdff0ce

            SHA256

            8d32aaaee30e90fd46619510ad464edb1df5f3e76a4ec274f75a12c5d7833535

            SHA512

            93f0d42d721d37821f15454da8100794adfbb7aa491d5419fd2e540362c3b1b9d7d7240d1599497cc6890f4d9d1413f453ed8c4f60069af476d34ab9c2ccbab9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            20ccb09d477d7af7676a56a7153f3f9b

            SHA1

            1c36122ca153d3fbd7f483d4a140c81dcbf53de6

            SHA256

            81703d2f80ddf4a74e3a152046b44dc29f15c7b69500ec8b178eb2bcb055ddba

            SHA512

            90d391ebab4fbde9d1f29d65176bcf1bf9c650d19c618c73f2adf6a9f43e0b17e97bd909ceee84b50b9e36a8cf69239bdafdb18065ff66c1bf28971fd7919ab4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            20ccb09d477d7af7676a56a7153f3f9b

            SHA1

            1c36122ca153d3fbd7f483d4a140c81dcbf53de6

            SHA256

            81703d2f80ddf4a74e3a152046b44dc29f15c7b69500ec8b178eb2bcb055ddba

            SHA512

            90d391ebab4fbde9d1f29d65176bcf1bf9c650d19c618c73f2adf6a9f43e0b17e97bd909ceee84b50b9e36a8cf69239bdafdb18065ff66c1bf28971fd7919ab4

          • \Users\Admin\AppData\Local\Temp\nso2974.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso2974.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso2974.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso2974.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso2974.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a4ac26bc3ddec934a243556a6b60813

            SHA1

            3dad5a2bdeaa73cac584d763a8b7aa758c72ad6d

            SHA256

            b868cd38064082b6d8afd676f027c82382df69a975cb2e3d1e39c86752910499

            SHA512

            5a7b17e4e8aefaf6d22dbc9911a5a21dff5a660569f5e2497ff660b450bcde8ddde70b658b760a12f4e29ea8a6208263a59e55a91f579884d0d23043ed12b1bf

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a4ac26bc3ddec934a243556a6b60813

            SHA1

            3dad5a2bdeaa73cac584d763a8b7aa758c72ad6d

            SHA256

            b868cd38064082b6d8afd676f027c82382df69a975cb2e3d1e39c86752910499

            SHA512

            5a7b17e4e8aefaf6d22dbc9911a5a21dff5a660569f5e2497ff660b450bcde8ddde70b658b760a12f4e29ea8a6208263a59e55a91f579884d0d23043ed12b1bf

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0a4ac26bc3ddec934a243556a6b60813

            SHA1

            3dad5a2bdeaa73cac584d763a8b7aa758c72ad6d

            SHA256

            b868cd38064082b6d8afd676f027c82382df69a975cb2e3d1e39c86752910499

            SHA512

            5a7b17e4e8aefaf6d22dbc9911a5a21dff5a660569f5e2497ff660b450bcde8ddde70b658b760a12f4e29ea8a6208263a59e55a91f579884d0d23043ed12b1bf

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            431310cce5246ffb8f73b2279a5f949d

            SHA1

            b8703647bdd4b55886955fe1ddacea64936d73fe

            SHA256

            420778d8f226ab7a7cedb3b63893518c9b2fad3c0735f0ac718f9442ee8239e5

            SHA512

            5da8bbb2c2398b6e649c4f1da9872d6586e1da81d9706e9fe6b206a0d0b7ace6940eb8da7f33b59aedf371f600a7458ef2e1dc5a8436564528a7d50af5dc46c1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            431310cce5246ffb8f73b2279a5f949d

            SHA1

            b8703647bdd4b55886955fe1ddacea64936d73fe

            SHA256

            420778d8f226ab7a7cedb3b63893518c9b2fad3c0735f0ac718f9442ee8239e5

            SHA512

            5da8bbb2c2398b6e649c4f1da9872d6586e1da81d9706e9fe6b206a0d0b7ace6940eb8da7f33b59aedf371f600a7458ef2e1dc5a8436564528a7d50af5dc46c1

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d47cc46319c83f95b2095d02fe28393e

            SHA1

            e5028b0b3302fd6f315de9eb52e33fc89a07a0aa

            SHA256

            fee7f53331dfd08b7bc78bef726a5723cb1fd6be579bcd2e4cc6d8f9385637b7

            SHA512

            1b96c8d021d36321e1a4b3e54ded7b7b59eea71610934f48fd6bf15c7060e622b91d9099becf94d52386c7614962993783bf04e8eece8ce2907bbebdc44526f9

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            481e9fd663dc108c217859b1a0078c0b

            SHA1

            453df751fcaa117e26c02f7a54f803f65bdff0ce

            SHA256

            8d32aaaee30e90fd46619510ad464edb1df5f3e76a4ec274f75a12c5d7833535

            SHA512

            93f0d42d721d37821f15454da8100794adfbb7aa491d5419fd2e540362c3b1b9d7d7240d1599497cc6890f4d9d1413f453ed8c4f60069af476d34ab9c2ccbab9

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            20ccb09d477d7af7676a56a7153f3f9b

            SHA1

            1c36122ca153d3fbd7f483d4a140c81dcbf53de6

            SHA256

            81703d2f80ddf4a74e3a152046b44dc29f15c7b69500ec8b178eb2bcb055ddba

            SHA512

            90d391ebab4fbde9d1f29d65176bcf1bf9c650d19c618c73f2adf6a9f43e0b17e97bd909ceee84b50b9e36a8cf69239bdafdb18065ff66c1bf28971fd7919ab4

          • memory/452-87-0x0000000000000000-mapping.dmp

          • memory/576-88-0x0000000000000000-mapping.dmp

          • memory/828-82-0x0000000000000000-mapping.dmp

          • memory/900-57-0x0000000000000000-mapping.dmp

          • memory/1420-77-0x0000000000000000-mapping.dmp

          • memory/1620-81-0x0000000000000000-mapping.dmp

          • memory/1680-54-0x0000000075921000-0x0000000075923000-memory.dmp

            Filesize

            8KB

          • memory/1680-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1680-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1680-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1928-61-0x0000000000000000-mapping.dmp

          • memory/1948-70-0x0000000000000000-mapping.dmp

          • memory/1968-64-0x0000000000000000-mapping.dmp

          • memory/1992-62-0x0000000000000000-mapping.dmp

          • memory/2012-58-0x0000000000000000-mapping.dmp