Analysis

  • max time kernel
    46s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a678467940ab826863276d95c74bbc3a87dabfd8ca9ca022edf6a01a3be1d434.exe

  • Size

    603KB

  • MD5

    d9e617add1187ff0a5d7c15da0691e3d

  • SHA1

    e13ffab9b046c0a6c611a7d38b93e46b1faba346

  • SHA256

    a678467940ab826863276d95c74bbc3a87dabfd8ca9ca022edf6a01a3be1d434

  • SHA512

    5a38624a13911040ac8613a2fc02c0076098ea3c95e23e6f8320b5940508874cea8b5ba83fdb1ae847c6f7812012bc7f707c00fd02d2945bb427b5d4980a67c0

  • SSDEEP

    12288:ZIny5DYTmI7EALsrcZfm1Tj6kKisoNAYOzo5bDZ5jTUJd:VUTmchsEOtdKiT+BzObzO

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\a678467940ab826863276d95c74bbc3a87dabfd8ca9ca022edf6a01a3be1d434.exe
    "C:\Users\Admin\AppData\Local\Temp\a678467940ab826863276d95c74bbc3a87dabfd8ca9ca022edf6a01a3be1d434.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:1500
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1864
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1700
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:432
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1676
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1436
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1116
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1908
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:952
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1412
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1640
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:784
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:364

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c4ced712f6ace7d01649d308d19e2c07

            SHA1

            df0c3be828ce18f065d68fb34093a9b59f1c3e5b

            SHA256

            b4c26fb1c780b40f8ef01fbccef9960efe40e8c32276290ef15f0826138f8304

            SHA512

            291ba9e138f6dad7314d9c01a049ffe1896309ef190b303d22361f3bfea1a28dfdb64bbb3722ce6d6c4ff9c701b30e063427891ce6b3869cc4ef7dd1f4b4fbe2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ddc2deb66611ee0cbefc08a8047695c4

            SHA1

            7048dec4f2cf27243a3b2557892cfbe2efc39d3d

            SHA256

            917ef76d31c824719b6b9f1cfa22b0a2a32fcba9def95bce71fe33ef5a7e4ca1

            SHA512

            90f966ec2d2e3a3296e5fef4bb609faeac7cdcff2408159a31a7e999b6323674802496eae317d312d2bf9af31475e868d7dd9a4dd33b71f752a7b1397071aecf

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            adb486421157b9ecb4b3ddcfc9433e06

            SHA1

            a59cf949aa628eb77a5649dde72a736aaf04301c

            SHA256

            26c589f4c857fee0c8f5bfa5ca311c0a356744a6d6d2342b67771549fa60cc6a

            SHA512

            0b39855e47c45fa38c6231977330be8a6dfd4f746239c5869c29dc7cde1bc5bf1c84c8dac43ebdc84a73d4c348aa033aeef7a8ce6aa90c371e6befc07abbb1c6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ec12fb42c1d12db329a6a2f62578560f

            SHA1

            21f2b214094de4b9c8393c3108d47cee47f086fd

            SHA256

            2e604d460b90d5d5f62a4e5f2048fd6eda8c369fdfe44114a8051f2830a59285

            SHA512

            276c9fb4349b253b9617d7bf69619e299f209bd493b4dee74966d65eb54b174189ba0f6457cdce51cc34110b650813e2e8e58c65c9a7ac739587863e87e445dc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ec12fb42c1d12db329a6a2f62578560f

            SHA1

            21f2b214094de4b9c8393c3108d47cee47f086fd

            SHA256

            2e604d460b90d5d5f62a4e5f2048fd6eda8c369fdfe44114a8051f2830a59285

            SHA512

            276c9fb4349b253b9617d7bf69619e299f209bd493b4dee74966d65eb54b174189ba0f6457cdce51cc34110b650813e2e8e58c65c9a7ac739587863e87e445dc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d383a1355b2c9e48ad6d2f7ee9fb637

            SHA1

            75ca02b1cb699f037c0f92a352181941cbe64701

            SHA256

            5dd28a379bece3f8b21fbe8e8f3649bd7fa0ac029d796024ed9bd32fbcf18a8b

            SHA512

            5b736c9fcf8f2020f1839de921301a71b55885568e5b3436bf6c209d32dc253df6797b2ac3098b06e8a4de36fed91941285af9d1c5eec733f35ba15e13d7f9b1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d383a1355b2c9e48ad6d2f7ee9fb637

            SHA1

            75ca02b1cb699f037c0f92a352181941cbe64701

            SHA256

            5dd28a379bece3f8b21fbe8e8f3649bd7fa0ac029d796024ed9bd32fbcf18a8b

            SHA512

            5b736c9fcf8f2020f1839de921301a71b55885568e5b3436bf6c209d32dc253df6797b2ac3098b06e8a4de36fed91941285af9d1c5eec733f35ba15e13d7f9b1

          • \Users\Admin\AppData\Local\Temp\nsyFF0A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyFF0A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFF0A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFF0A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFF0A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c4ced712f6ace7d01649d308d19e2c07

            SHA1

            df0c3be828ce18f065d68fb34093a9b59f1c3e5b

            SHA256

            b4c26fb1c780b40f8ef01fbccef9960efe40e8c32276290ef15f0826138f8304

            SHA512

            291ba9e138f6dad7314d9c01a049ffe1896309ef190b303d22361f3bfea1a28dfdb64bbb3722ce6d6c4ff9c701b30e063427891ce6b3869cc4ef7dd1f4b4fbe2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c4ced712f6ace7d01649d308d19e2c07

            SHA1

            df0c3be828ce18f065d68fb34093a9b59f1c3e5b

            SHA256

            b4c26fb1c780b40f8ef01fbccef9960efe40e8c32276290ef15f0826138f8304

            SHA512

            291ba9e138f6dad7314d9c01a049ffe1896309ef190b303d22361f3bfea1a28dfdb64bbb3722ce6d6c4ff9c701b30e063427891ce6b3869cc4ef7dd1f4b4fbe2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c4ced712f6ace7d01649d308d19e2c07

            SHA1

            df0c3be828ce18f065d68fb34093a9b59f1c3e5b

            SHA256

            b4c26fb1c780b40f8ef01fbccef9960efe40e8c32276290ef15f0826138f8304

            SHA512

            291ba9e138f6dad7314d9c01a049ffe1896309ef190b303d22361f3bfea1a28dfdb64bbb3722ce6d6c4ff9c701b30e063427891ce6b3869cc4ef7dd1f4b4fbe2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ddc2deb66611ee0cbefc08a8047695c4

            SHA1

            7048dec4f2cf27243a3b2557892cfbe2efc39d3d

            SHA256

            917ef76d31c824719b6b9f1cfa22b0a2a32fcba9def95bce71fe33ef5a7e4ca1

            SHA512

            90f966ec2d2e3a3296e5fef4bb609faeac7cdcff2408159a31a7e999b6323674802496eae317d312d2bf9af31475e868d7dd9a4dd33b71f752a7b1397071aecf

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ddc2deb66611ee0cbefc08a8047695c4

            SHA1

            7048dec4f2cf27243a3b2557892cfbe2efc39d3d

            SHA256

            917ef76d31c824719b6b9f1cfa22b0a2a32fcba9def95bce71fe33ef5a7e4ca1

            SHA512

            90f966ec2d2e3a3296e5fef4bb609faeac7cdcff2408159a31a7e999b6323674802496eae317d312d2bf9af31475e868d7dd9a4dd33b71f752a7b1397071aecf

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            adb486421157b9ecb4b3ddcfc9433e06

            SHA1

            a59cf949aa628eb77a5649dde72a736aaf04301c

            SHA256

            26c589f4c857fee0c8f5bfa5ca311c0a356744a6d6d2342b67771549fa60cc6a

            SHA512

            0b39855e47c45fa38c6231977330be8a6dfd4f746239c5869c29dc7cde1bc5bf1c84c8dac43ebdc84a73d4c348aa033aeef7a8ce6aa90c371e6befc07abbb1c6

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ec12fb42c1d12db329a6a2f62578560f

            SHA1

            21f2b214094de4b9c8393c3108d47cee47f086fd

            SHA256

            2e604d460b90d5d5f62a4e5f2048fd6eda8c369fdfe44114a8051f2830a59285

            SHA512

            276c9fb4349b253b9617d7bf69619e299f209bd493b4dee74966d65eb54b174189ba0f6457cdce51cc34110b650813e2e8e58c65c9a7ac739587863e87e445dc

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d383a1355b2c9e48ad6d2f7ee9fb637

            SHA1

            75ca02b1cb699f037c0f92a352181941cbe64701

            SHA256

            5dd28a379bece3f8b21fbe8e8f3649bd7fa0ac029d796024ed9bd32fbcf18a8b

            SHA512

            5b736c9fcf8f2020f1839de921301a71b55885568e5b3436bf6c209d32dc253df6797b2ac3098b06e8a4de36fed91941285af9d1c5eec733f35ba15e13d7f9b1

          • memory/432-62-0x0000000000000000-mapping.dmp

          • memory/844-58-0x0000000000000000-mapping.dmp

          • memory/952-81-0x0000000000000000-mapping.dmp

          • memory/1116-76-0x0000000000000000-mapping.dmp

          • memory/1412-86-0x0000000000000000-mapping.dmp

          • memory/1436-70-0x0000000000000000-mapping.dmp

          • memory/1500-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1500-54-0x0000000075D71000-0x0000000075D73000-memory.dmp

            Filesize

            8KB

          • memory/1500-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1640-87-0x0000000000000000-mapping.dmp

          • memory/1676-64-0x0000000000000000-mapping.dmp

          • memory/1700-61-0x0000000000000000-mapping.dmp

          • memory/1864-59-0x0000000000000000-mapping.dmp

          • memory/1908-80-0x0000000000000000-mapping.dmp