Analysis

  • max time kernel
    13s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:59

General

  • Target

    231d807e8d398bc1ef0f82c27e0204fcd77f1a0677161bdc915fa2ad598fe47d.exe

  • Size

    446KB

  • MD5

    4fc90897af36763c15bdfd14829edaf5

  • SHA1

    e47bf76ae8940e937029e2516418646667e21810

  • SHA256

    231d807e8d398bc1ef0f82c27e0204fcd77f1a0677161bdc915fa2ad598fe47d

  • SHA512

    6ec3d861b42cdd9b976cdb5abfc4409504d34a0f16d8492fa2f685352a93655bc4816bfd91c0b641c68d8c0dcbea26c0724ae11c6115bd83037edea7e212d240

  • SSDEEP

    12288:JczHo4TsRNp+i+myAfXjOKkB+0FGQKcytJl9:JKPCaebOKqFmJl9

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\231d807e8d398bc1ef0f82c27e0204fcd77f1a0677161bdc915fa2ad598fe47d.exe
    "C:\Users\Admin\AppData\Local\Temp\231d807e8d398bc1ef0f82c27e0204fcd77f1a0677161bdc915fa2ad598fe47d.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:1980
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1524
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1688
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:604
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1692
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:300
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1840
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1308
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:592
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1556
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1560
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:880
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1384

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2ee750bf7055730e456482b834f721f6

            SHA1

            c3765f9f6a12d9a84d0a58110a9e10307a2a2a38

            SHA256

            78750947b82fa700caa0593aa51c1d649b8f49f7d0ef53a944f7edcd8f079d58

            SHA512

            2e3035ac80de1d8ba3c300a23b8dc713170cb39feb17e81cead4af7ce0f5111619a1bed885e63fb255a796eee37c191d0ae0add41f2d4600a7b2aa7d8b243ff7

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f63095c183102c7e5b84035cc8a45a47

            SHA1

            ffd367505171b56679897e789eea826945168541

            SHA256

            bbbfe65d343e861711e35a779e6e915bfd87e69f3f86f2d19ddb26db9fa02160

            SHA512

            e0e513fd50818303394d09f903b7844362241f97db4f285924a4aeea5f79eb5aa7a535a4c86f2b63ad040a5f65f20b5303faf039d4e04368177353e538e9abfb

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            55eb66c3e4c9b098f48fca59cc1c9e52

            SHA1

            62218015d6e77a1812dd8c35ad49c412f49e4b01

            SHA256

            615ed8313eb3aa4bb631f7f5dcf891c8982a5fbe4ffe5bce066cd8b6a4fae31f

            SHA512

            b8232a29f2564994a771d81aec8feebac14b3b271b1804ff2b4da436a7dc2cfa64e53d4699c35597d7941436a37b2111f6aa4a50543237b4bcf41cf3828a5f15

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            13cb215a066739e85b485bb408d1dda7

            SHA1

            500c9e1050dfeded1c40084015ef799c82ee401f

            SHA256

            639096c95088fd4f17d016395e6b990050f675fdfde4e6abc75bf36b63d9765b

            SHA512

            b2f25bfa910ca66285e80450fa816dcd2245df94e108f84f4b72df9ed059abc1ce0b748ce55f7f75f520b106e188df719f9479d23cfecefe795853672c52bb03

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            13cb215a066739e85b485bb408d1dda7

            SHA1

            500c9e1050dfeded1c40084015ef799c82ee401f

            SHA256

            639096c95088fd4f17d016395e6b990050f675fdfde4e6abc75bf36b63d9765b

            SHA512

            b2f25bfa910ca66285e80450fa816dcd2245df94e108f84f4b72df9ed059abc1ce0b748ce55f7f75f520b106e188df719f9479d23cfecefe795853672c52bb03

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            121b543ee584ecf78701c09fd8dd739c

            SHA1

            ccd47b4f3e500a86a8fb6847b060c8c3a5868419

            SHA256

            1f6338844014ef8e9f70c05ce6c1ade495e833454744a2a9fae1f36be8e2dc16

            SHA512

            f1dc3fed61521a0ffe8bc2f6cb879c5920ab1e4444b4aa867d98ec1466313a511a1607e240623b18fcce1326daaabb89493e6c7f056f2b41c15d6fdac4524bd9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            121b543ee584ecf78701c09fd8dd739c

            SHA1

            ccd47b4f3e500a86a8fb6847b060c8c3a5868419

            SHA256

            1f6338844014ef8e9f70c05ce6c1ade495e833454744a2a9fae1f36be8e2dc16

            SHA512

            f1dc3fed61521a0ffe8bc2f6cb879c5920ab1e4444b4aa867d98ec1466313a511a1607e240623b18fcce1326daaabb89493e6c7f056f2b41c15d6fdac4524bd9

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy5EB6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2ee750bf7055730e456482b834f721f6

            SHA1

            c3765f9f6a12d9a84d0a58110a9e10307a2a2a38

            SHA256

            78750947b82fa700caa0593aa51c1d649b8f49f7d0ef53a944f7edcd8f079d58

            SHA512

            2e3035ac80de1d8ba3c300a23b8dc713170cb39feb17e81cead4af7ce0f5111619a1bed885e63fb255a796eee37c191d0ae0add41f2d4600a7b2aa7d8b243ff7

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2ee750bf7055730e456482b834f721f6

            SHA1

            c3765f9f6a12d9a84d0a58110a9e10307a2a2a38

            SHA256

            78750947b82fa700caa0593aa51c1d649b8f49f7d0ef53a944f7edcd8f079d58

            SHA512

            2e3035ac80de1d8ba3c300a23b8dc713170cb39feb17e81cead4af7ce0f5111619a1bed885e63fb255a796eee37c191d0ae0add41f2d4600a7b2aa7d8b243ff7

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2ee750bf7055730e456482b834f721f6

            SHA1

            c3765f9f6a12d9a84d0a58110a9e10307a2a2a38

            SHA256

            78750947b82fa700caa0593aa51c1d649b8f49f7d0ef53a944f7edcd8f079d58

            SHA512

            2e3035ac80de1d8ba3c300a23b8dc713170cb39feb17e81cead4af7ce0f5111619a1bed885e63fb255a796eee37c191d0ae0add41f2d4600a7b2aa7d8b243ff7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f63095c183102c7e5b84035cc8a45a47

            SHA1

            ffd367505171b56679897e789eea826945168541

            SHA256

            bbbfe65d343e861711e35a779e6e915bfd87e69f3f86f2d19ddb26db9fa02160

            SHA512

            e0e513fd50818303394d09f903b7844362241f97db4f285924a4aeea5f79eb5aa7a535a4c86f2b63ad040a5f65f20b5303faf039d4e04368177353e538e9abfb

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f63095c183102c7e5b84035cc8a45a47

            SHA1

            ffd367505171b56679897e789eea826945168541

            SHA256

            bbbfe65d343e861711e35a779e6e915bfd87e69f3f86f2d19ddb26db9fa02160

            SHA512

            e0e513fd50818303394d09f903b7844362241f97db4f285924a4aeea5f79eb5aa7a535a4c86f2b63ad040a5f65f20b5303faf039d4e04368177353e538e9abfb

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            55eb66c3e4c9b098f48fca59cc1c9e52

            SHA1

            62218015d6e77a1812dd8c35ad49c412f49e4b01

            SHA256

            615ed8313eb3aa4bb631f7f5dcf891c8982a5fbe4ffe5bce066cd8b6a4fae31f

            SHA512

            b8232a29f2564994a771d81aec8feebac14b3b271b1804ff2b4da436a7dc2cfa64e53d4699c35597d7941436a37b2111f6aa4a50543237b4bcf41cf3828a5f15

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            13cb215a066739e85b485bb408d1dda7

            SHA1

            500c9e1050dfeded1c40084015ef799c82ee401f

            SHA256

            639096c95088fd4f17d016395e6b990050f675fdfde4e6abc75bf36b63d9765b

            SHA512

            b2f25bfa910ca66285e80450fa816dcd2245df94e108f84f4b72df9ed059abc1ce0b748ce55f7f75f520b106e188df719f9479d23cfecefe795853672c52bb03

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            121b543ee584ecf78701c09fd8dd739c

            SHA1

            ccd47b4f3e500a86a8fb6847b060c8c3a5868419

            SHA256

            1f6338844014ef8e9f70c05ce6c1ade495e833454744a2a9fae1f36be8e2dc16

            SHA512

            f1dc3fed61521a0ffe8bc2f6cb879c5920ab1e4444b4aa867d98ec1466313a511a1607e240623b18fcce1326daaabb89493e6c7f056f2b41c15d6fdac4524bd9

          • memory/300-69-0x0000000000000000-mapping.dmp

          • memory/592-80-0x0000000000000000-mapping.dmp

          • memory/604-61-0x0000000000000000-mapping.dmp

          • memory/1308-79-0x0000000000000000-mapping.dmp

          • memory/1524-58-0x0000000000000000-mapping.dmp

          • memory/1556-85-0x0000000000000000-mapping.dmp

          • memory/1560-86-0x0000000000000000-mapping.dmp

          • memory/1688-60-0x0000000000000000-mapping.dmp

          • memory/1692-63-0x0000000000000000-mapping.dmp

          • memory/1728-57-0x0000000000000000-mapping.dmp

          • memory/1840-75-0x0000000000000000-mapping.dmp

          • memory/1980-54-0x0000000075521000-0x0000000075523000-memory.dmp

            Filesize

            8KB