Analysis

  • max time kernel
    9s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:30

General

  • Target

    2bdebf6492ef43adf06e3bc1b8b683e47a473b9497caedc40bff1c46098c072a.exe

  • Size

    603KB

  • MD5

    b6a80ac095c42f986c39d3eabc46160b

  • SHA1

    938f8949afd6b2234ef952325c83d95f453865e7

  • SHA256

    2bdebf6492ef43adf06e3bc1b8b683e47a473b9497caedc40bff1c46098c072a

  • SHA512

    3c3050797de5cdd4af45c8a9db540e65997b88f4a788afc2d767b185089334a24b90830a5589a82dd63f2f1eb4f636655727079a0043e6f53f0046e30ec5492a

  • SSDEEP

    12288:JIny5DYTmI6JUtdKor2ZSAgq2KwSmaodrSOHDqqSE:lUTmJJzZJgqzNoduOHm

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\2bdebf6492ef43adf06e3bc1b8b683e47a473b9497caedc40bff1c46098c072a.exe
    "C:\Users\Admin\AppData\Local\Temp\2bdebf6492ef43adf06e3bc1b8b683e47a473b9497caedc40bff1c46098c072a.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:1172
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1120
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1444
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1748
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1248
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1612
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1524
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1040
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1988
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:960
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1140
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:572
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:388

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            23d80db5d4be659d555f88cd9d2a5efd

            SHA1

            546ad55aee385d5fcebed75ee045e25a890ae359

            SHA256

            8b05a7d197f489bd2698023a354f4fb958c303d2092a572d6a149156949bf91e

            SHA512

            0380a710cb7fa8c25930b9c872d0da67ffb8ebead03866c5324dd41a6192012ada27f8d74156f70872a4a6875d9a869568f02449288befb592012822fef67bf8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c1e9a984f7f54ebdcc84b8134a519035

            SHA1

            d2309d776ba47e08f19c919f717b46d8e08c6846

            SHA256

            34b84a8547f021633337a0e7d7756402175f051c4f3350c54cd8ccc52608311c

            SHA512

            50510ac7aadb626b3740326174d399a44453413fd97725c91374c44e55df357047aa25c7484fb76c36b9d68561fcebe8a5a5719aafee80843a63e85bdfb0e865

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            916417863e4499c8dce710761e17dd54

            SHA1

            fbc9e33548306a71676aa519a15dff4410099dc0

            SHA256

            718cf3d5fb766f91b89dcfe328bff81fac6c2661aeb85bca31eb4798d1e8573a

            SHA512

            0a9e7fda9f30c7a36782b49f25834f1f2d6e114f86c92d8a19fe67cfaedab337a1e02eda800c694a754cb32a95055b64ded5d36212b21bb463eeb0b8c303a5f0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b5252bbe015298b36cb17a87e0b4a1cc

            SHA1

            bfada90ea44b290ffc25f880d5acbb98631e24f6

            SHA256

            28fe7d4c5c1454b316bbed703807067ceca177ef801e300af0023cdf1f9f645d

            SHA512

            f56de0212a2dff48fc25ccd637840f65c1f2d2959f1179da2584baeeb3dcc4579cd5a7895e5fa575c5cbd92e4eb696f3b5bf84ac804069f3ef15c06b516858fc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b5252bbe015298b36cb17a87e0b4a1cc

            SHA1

            bfada90ea44b290ffc25f880d5acbb98631e24f6

            SHA256

            28fe7d4c5c1454b316bbed703807067ceca177ef801e300af0023cdf1f9f645d

            SHA512

            f56de0212a2dff48fc25ccd637840f65c1f2d2959f1179da2584baeeb3dcc4579cd5a7895e5fa575c5cbd92e4eb696f3b5bf84ac804069f3ef15c06b516858fc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            02779b4d2822eb585d9ce90ba3b655d4

            SHA1

            562bad9600fc9392802a475dd633216ab23c03bb

            SHA256

            42ab5a4225827d84acf079d5faa88ac879bd28f18d8aa6b2c03262955f7f0c74

            SHA512

            905cd5bddbf205fe925ff88945c2aab2bee8ea3c38f2ce2565e81fa1968ad921dd79b610bc8d2d874ba2cddb7fdb3f2ff024f23d4cb54c9147512d41dce2c872

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            02779b4d2822eb585d9ce90ba3b655d4

            SHA1

            562bad9600fc9392802a475dd633216ab23c03bb

            SHA256

            42ab5a4225827d84acf079d5faa88ac879bd28f18d8aa6b2c03262955f7f0c74

            SHA512

            905cd5bddbf205fe925ff88945c2aab2bee8ea3c38f2ce2565e81fa1968ad921dd79b610bc8d2d874ba2cddb7fdb3f2ff024f23d4cb54c9147512d41dce2c872

          • \Users\Admin\AppData\Local\Temp\nst9659.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst9659.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9659.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9659.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9659.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            23d80db5d4be659d555f88cd9d2a5efd

            SHA1

            546ad55aee385d5fcebed75ee045e25a890ae359

            SHA256

            8b05a7d197f489bd2698023a354f4fb958c303d2092a572d6a149156949bf91e

            SHA512

            0380a710cb7fa8c25930b9c872d0da67ffb8ebead03866c5324dd41a6192012ada27f8d74156f70872a4a6875d9a869568f02449288befb592012822fef67bf8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            23d80db5d4be659d555f88cd9d2a5efd

            SHA1

            546ad55aee385d5fcebed75ee045e25a890ae359

            SHA256

            8b05a7d197f489bd2698023a354f4fb958c303d2092a572d6a149156949bf91e

            SHA512

            0380a710cb7fa8c25930b9c872d0da67ffb8ebead03866c5324dd41a6192012ada27f8d74156f70872a4a6875d9a869568f02449288befb592012822fef67bf8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            23d80db5d4be659d555f88cd9d2a5efd

            SHA1

            546ad55aee385d5fcebed75ee045e25a890ae359

            SHA256

            8b05a7d197f489bd2698023a354f4fb958c303d2092a572d6a149156949bf91e

            SHA512

            0380a710cb7fa8c25930b9c872d0da67ffb8ebead03866c5324dd41a6192012ada27f8d74156f70872a4a6875d9a869568f02449288befb592012822fef67bf8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c1e9a984f7f54ebdcc84b8134a519035

            SHA1

            d2309d776ba47e08f19c919f717b46d8e08c6846

            SHA256

            34b84a8547f021633337a0e7d7756402175f051c4f3350c54cd8ccc52608311c

            SHA512

            50510ac7aadb626b3740326174d399a44453413fd97725c91374c44e55df357047aa25c7484fb76c36b9d68561fcebe8a5a5719aafee80843a63e85bdfb0e865

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c1e9a984f7f54ebdcc84b8134a519035

            SHA1

            d2309d776ba47e08f19c919f717b46d8e08c6846

            SHA256

            34b84a8547f021633337a0e7d7756402175f051c4f3350c54cd8ccc52608311c

            SHA512

            50510ac7aadb626b3740326174d399a44453413fd97725c91374c44e55df357047aa25c7484fb76c36b9d68561fcebe8a5a5719aafee80843a63e85bdfb0e865

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            916417863e4499c8dce710761e17dd54

            SHA1

            fbc9e33548306a71676aa519a15dff4410099dc0

            SHA256

            718cf3d5fb766f91b89dcfe328bff81fac6c2661aeb85bca31eb4798d1e8573a

            SHA512

            0a9e7fda9f30c7a36782b49f25834f1f2d6e114f86c92d8a19fe67cfaedab337a1e02eda800c694a754cb32a95055b64ded5d36212b21bb463eeb0b8c303a5f0

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b5252bbe015298b36cb17a87e0b4a1cc

            SHA1

            bfada90ea44b290ffc25f880d5acbb98631e24f6

            SHA256

            28fe7d4c5c1454b316bbed703807067ceca177ef801e300af0023cdf1f9f645d

            SHA512

            f56de0212a2dff48fc25ccd637840f65c1f2d2959f1179da2584baeeb3dcc4579cd5a7895e5fa575c5cbd92e4eb696f3b5bf84ac804069f3ef15c06b516858fc

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            02779b4d2822eb585d9ce90ba3b655d4

            SHA1

            562bad9600fc9392802a475dd633216ab23c03bb

            SHA256

            42ab5a4225827d84acf079d5faa88ac879bd28f18d8aa6b2c03262955f7f0c74

            SHA512

            905cd5bddbf205fe925ff88945c2aab2bee8ea3c38f2ce2565e81fa1968ad921dd79b610bc8d2d874ba2cddb7fdb3f2ff024f23d4cb54c9147512d41dce2c872

          • memory/960-86-0x0000000000000000-mapping.dmp

          • memory/1040-80-0x0000000000000000-mapping.dmp

          • memory/1120-59-0x0000000000000000-mapping.dmp

          • memory/1140-87-0x0000000000000000-mapping.dmp

          • memory/1172-54-0x0000000075A81000-0x0000000075A83000-memory.dmp

            Filesize

            8KB

          • memory/1172-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1172-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1248-64-0x0000000000000000-mapping.dmp

          • memory/1444-61-0x0000000000000000-mapping.dmp

          • memory/1524-76-0x0000000000000000-mapping.dmp

          • memory/1612-70-0x0000000000000000-mapping.dmp

          • memory/1748-62-0x0000000000000000-mapping.dmp

          • memory/1988-81-0x0000000000000000-mapping.dmp

          • memory/2036-57-0x0000000000000000-mapping.dmp