Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 03:34

General

  • Target

    1352ac52a2f998647661dcd9d5ac076c96ceb45fc75f89e528f9858d7740d9aa.exe

  • Size

    675KB

  • MD5

    fbdd1b4fee41dd3fac99436be6f7a8e3

  • SHA1

    23725a67c37463b23adcf04a25282d0cff327a46

  • SHA256

    1352ac52a2f998647661dcd9d5ac076c96ceb45fc75f89e528f9858d7740d9aa

  • SHA512

    6e9185851d20f57f80ccc4db79a78b46987919573f33de34e837ac0008bf40b8abb80f27af895019e381d1b604dbd915d0f5a12e6ea60327227a5838a7af7858

  • SSDEEP

    12288:tdgmy6lZ8E9soPvow2bfDif0IfQEro1+e5wxpb56+lJqNylRnVDG:tdgX6tTLaf00iDs1+kEBlJy

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\1352ac52a2f998647661dcd9d5ac076c96ceb45fc75f89e528f9858d7740d9aa.exe
    "C:\Users\Admin\AppData\Local\Temp\1352ac52a2f998647661dcd9d5ac076c96ceb45fc75f89e528f9858d7740d9aa.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:1084
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:304
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1952
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1364
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:932
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2040
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1756
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1552
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1428
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:876
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1300
          • 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:764

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81759cf5030b4ed8cbf2f3fd54fbea18

            SHA1

            ff01e75b08ac9171c4aee3000f6e3cb3058a4ab4

            SHA256

            15d7ec02bb725aca1a66f1f3805f9cb6edb23f773dde993238ee2c82e59eedd1

            SHA512

            ffe9c60dadecb27db509230f1784c68e9dbe94d30998b7f373f212d3dc95bc5b4490acaffbb54968f72adebb58a0d4b6b6e763f2745d42fc871488bf009d66d6

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            91b59fd50d86a8c6e3f754b4529c1630

            SHA1

            7a70eb633526e71383cbc84a71a079cb8e07fe1f

            SHA256

            b934482dd495f2a698e1f9382302cdabfab9f6a472123d4cadbb313b1794ec37

            SHA512

            c54b6517a92334c81fc6276aa464fdb6c7b89deb028a41451aac3659650764826bad27f8969b870a247ae3994d19d96d0226497f8b7cbc1081de2acb80691795

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            539ebb0cefb4d708d80c894c514d6e6a

            SHA1

            7dd8414b66ecf0f43a48a96ae35264f1a860ae9f

            SHA256

            8e1482107abf927934b653c390bb310a50a852af9e5c9c789f19a190228bef08

            SHA512

            f6426474e8e1e1fda088b15977e9b2eb282bd39832ccc42e0cb03dbb9f0ebcdb0e9c6f59be78e4e57f6ad789af0bfb4cc241d6e2bdcaa7cef4211f00ec55993c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9e5fe89148026bd16918f1c3b033272f

            SHA1

            e68251af0d6194a755d4107506205df2700d8b92

            SHA256

            74254cd50dc582b82a631a9b5ddee7e520cf603071a8cf66a151c4726af88ddf

            SHA512

            a7e94520512a16e9e4c21518a590cc0b87a1ce80b5c9b95c34df25746217a2d22fae0259f9fa85ea6647c1ee37308edc18c388ecc824d79f557b663f70d4f6a2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9e5fe89148026bd16918f1c3b033272f

            SHA1

            e68251af0d6194a755d4107506205df2700d8b92

            SHA256

            74254cd50dc582b82a631a9b5ddee7e520cf603071a8cf66a151c4726af88ddf

            SHA512

            a7e94520512a16e9e4c21518a590cc0b87a1ce80b5c9b95c34df25746217a2d22fae0259f9fa85ea6647c1ee37308edc18c388ecc824d79f557b663f70d4f6a2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0502c3fcf5fcf1dfd0f7c980f5ce20ab

            SHA1

            95e86b011026843b42b63f2d62619aaaa37cad1d

            SHA256

            a69006d5030058d25b2b0aca4d13e1acb1523a14be16324f80dc958e745b7cca

            SHA512

            5e73d64786dd5425c56c339b07dff31532c2dc20820909e9a4511f2655c42d3f40b67bc405ff596d86ee34b0d176e89af78570fc46c540c1dd122a170ea8127e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0502c3fcf5fcf1dfd0f7c980f5ce20ab

            SHA1

            95e86b011026843b42b63f2d62619aaaa37cad1d

            SHA256

            a69006d5030058d25b2b0aca4d13e1acb1523a14be16324f80dc958e745b7cca

            SHA512

            5e73d64786dd5425c56c339b07dff31532c2dc20820909e9a4511f2655c42d3f40b67bc405ff596d86ee34b0d176e89af78570fc46c540c1dd122a170ea8127e

          • \Users\Admin\AppData\Local\Temp\nst10E5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst10E5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst10E5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst10E5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst10E5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81759cf5030b4ed8cbf2f3fd54fbea18

            SHA1

            ff01e75b08ac9171c4aee3000f6e3cb3058a4ab4

            SHA256

            15d7ec02bb725aca1a66f1f3805f9cb6edb23f773dde993238ee2c82e59eedd1

            SHA512

            ffe9c60dadecb27db509230f1784c68e9dbe94d30998b7f373f212d3dc95bc5b4490acaffbb54968f72adebb58a0d4b6b6e763f2745d42fc871488bf009d66d6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81759cf5030b4ed8cbf2f3fd54fbea18

            SHA1

            ff01e75b08ac9171c4aee3000f6e3cb3058a4ab4

            SHA256

            15d7ec02bb725aca1a66f1f3805f9cb6edb23f773dde993238ee2c82e59eedd1

            SHA512

            ffe9c60dadecb27db509230f1784c68e9dbe94d30998b7f373f212d3dc95bc5b4490acaffbb54968f72adebb58a0d4b6b6e763f2745d42fc871488bf009d66d6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81759cf5030b4ed8cbf2f3fd54fbea18

            SHA1

            ff01e75b08ac9171c4aee3000f6e3cb3058a4ab4

            SHA256

            15d7ec02bb725aca1a66f1f3805f9cb6edb23f773dde993238ee2c82e59eedd1

            SHA512

            ffe9c60dadecb27db509230f1784c68e9dbe94d30998b7f373f212d3dc95bc5b4490acaffbb54968f72adebb58a0d4b6b6e763f2745d42fc871488bf009d66d6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            91b59fd50d86a8c6e3f754b4529c1630

            SHA1

            7a70eb633526e71383cbc84a71a079cb8e07fe1f

            SHA256

            b934482dd495f2a698e1f9382302cdabfab9f6a472123d4cadbb313b1794ec37

            SHA512

            c54b6517a92334c81fc6276aa464fdb6c7b89deb028a41451aac3659650764826bad27f8969b870a247ae3994d19d96d0226497f8b7cbc1081de2acb80691795

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            91b59fd50d86a8c6e3f754b4529c1630

            SHA1

            7a70eb633526e71383cbc84a71a079cb8e07fe1f

            SHA256

            b934482dd495f2a698e1f9382302cdabfab9f6a472123d4cadbb313b1794ec37

            SHA512

            c54b6517a92334c81fc6276aa464fdb6c7b89deb028a41451aac3659650764826bad27f8969b870a247ae3994d19d96d0226497f8b7cbc1081de2acb80691795

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            539ebb0cefb4d708d80c894c514d6e6a

            SHA1

            7dd8414b66ecf0f43a48a96ae35264f1a860ae9f

            SHA256

            8e1482107abf927934b653c390bb310a50a852af9e5c9c789f19a190228bef08

            SHA512

            f6426474e8e1e1fda088b15977e9b2eb282bd39832ccc42e0cb03dbb9f0ebcdb0e9c6f59be78e4e57f6ad789af0bfb4cc241d6e2bdcaa7cef4211f00ec55993c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9e5fe89148026bd16918f1c3b033272f

            SHA1

            e68251af0d6194a755d4107506205df2700d8b92

            SHA256

            74254cd50dc582b82a631a9b5ddee7e520cf603071a8cf66a151c4726af88ddf

            SHA512

            a7e94520512a16e9e4c21518a590cc0b87a1ce80b5c9b95c34df25746217a2d22fae0259f9fa85ea6647c1ee37308edc18c388ecc824d79f557b663f70d4f6a2

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0502c3fcf5fcf1dfd0f7c980f5ce20ab

            SHA1

            95e86b011026843b42b63f2d62619aaaa37cad1d

            SHA256

            a69006d5030058d25b2b0aca4d13e1acb1523a14be16324f80dc958e745b7cca

            SHA512

            5e73d64786dd5425c56c339b07dff31532c2dc20820909e9a4511f2655c42d3f40b67bc405ff596d86ee34b0d176e89af78570fc46c540c1dd122a170ea8127e

          • memory/1084-54-0x0000000074C91000-0x0000000074C93000-memory.dmp

            Filesize

            8KB

          • memory/1084-55-0x0000000000350000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1084-90-0x0000000000350000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB