Analysis

  • max time kernel
    40s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:13

General

  • Target

    c41e5f6408a4e20711b4c0f285d0372ed13367699e3e53d604601442df22c560.exe

  • Size

    602KB

  • MD5

    2635bd868415a39828258ea89c985c6d

  • SHA1

    9de579c3e6314c17b30c3c4c25d56af8be15afc7

  • SHA256

    c41e5f6408a4e20711b4c0f285d0372ed13367699e3e53d604601442df22c560

  • SHA512

    bb8d6fac354698edf9e299c5e9dcb6ad113b8c51209fc2fac68256abec2aded8390d505edf9e32ff2f552c0596192fdd3aa0f415ec36dae8aeea480d8194715b

  • SSDEEP

    12288:WIny5DYTZIkIo3/9tWVlbaVdzdeBdpt5hSuUu9Ow4tvc+:YUTZTIi9EbaVDKdpRSPRwg

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\c41e5f6408a4e20711b4c0f285d0372ed13367699e3e53d604601442df22c560.exe
    "C:\Users\Admin\AppData\Local\Temp\c41e5f6408a4e20711b4c0f285d0372ed13367699e3e53d604601442df22c560.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:1480
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1788
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1660
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1708
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1972
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:960
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1632
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:632
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1960
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1724
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1364
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:268
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:992
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1080

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3f136962e3de8c3e5065412426f4bc4c

            SHA1

            398c29a10ac2ab102769578bc42372f0f97da3f5

            SHA256

            f018fdafe11499b8c2afec645203033d07cf0f923ff793b5222800dd35496377

            SHA512

            e3fa7da83bd40079f5b32669a4bd0e0168597a1c6429c53f47891e83d18eb05bffc72d75d4d43238e211bbf0abab1261e06151274fadeafa6cd6a5464e66e090

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cc8edef244bcfdc2fdc45c018fda3caf

            SHA1

            b77f4e49c0b43e379f87aadf4f268820167d697d

            SHA256

            8683c592b33c2a3dfd30c452bbbcb7f7330432ce75c95ebd36f4c894a93ddf95

            SHA512

            7c6eebb96ffd63e2b80c4b092ffcd2113b30988ae33f87cebe19b2af41bb8ede90daa400fb527a1ee2e267f08689c3acd25d026fce64fdf4dfd57ce6c4077621

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d9e2962cef33aab098f1e1b904dd7966

            SHA1

            d103da4713dab448d5f366eb0818dfe895794646

            SHA256

            27cb5748896e6da5ac722c8f39ff19d966fb31baa41f0198510335390794a379

            SHA512

            8abd7515c39dbe204d9315fd9c8c07936ff2f26d9c1b654c54db8d0f9fa3b2a92af836feae3317031940697a41e8d0601fc063e42827b5facbca9a35935f07db

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2d1cb50f31bc0e38b77a672421cd92fa

            SHA1

            9316180ede4b33566515627d5e1f3b029d96e869

            SHA256

            07a174d11f4e5cee0cb32bbd5b760cb5e27b2508c27afec742e61a9700296b72

            SHA512

            f627a5739b49d154174bdc106c2dd1183ff2099d395f119160b5059dc41aaa07f0048a1be8c9192dbbceb5ffb0846abc54521df3e88684ae3bd77192a6c5ea57

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2d1cb50f31bc0e38b77a672421cd92fa

            SHA1

            9316180ede4b33566515627d5e1f3b029d96e869

            SHA256

            07a174d11f4e5cee0cb32bbd5b760cb5e27b2508c27afec742e61a9700296b72

            SHA512

            f627a5739b49d154174bdc106c2dd1183ff2099d395f119160b5059dc41aaa07f0048a1be8c9192dbbceb5ffb0846abc54521df3e88684ae3bd77192a6c5ea57

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f023e15f661b8872168751ca8bb042a8

            SHA1

            9b5e08fa04c6d5d23794a8694978bdfcad7d4720

            SHA256

            cec2f0d4c4046156cfbc7357e6a606b9348db24f1ba0b5ebaaaf1646c7ed293c

            SHA512

            f2e203bbd930acef5329434679a1fa83ade450cf99e8a705ce6aac3c293e044341c1f475b2ab68bc72a55ce07c92515cf2d59fcac2c6fb4dc63761df4f0b0062

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f023e15f661b8872168751ca8bb042a8

            SHA1

            9b5e08fa04c6d5d23794a8694978bdfcad7d4720

            SHA256

            cec2f0d4c4046156cfbc7357e6a606b9348db24f1ba0b5ebaaaf1646c7ed293c

            SHA512

            f2e203bbd930acef5329434679a1fa83ade450cf99e8a705ce6aac3c293e044341c1f475b2ab68bc72a55ce07c92515cf2d59fcac2c6fb4dc63761df4f0b0062

          • \Users\Admin\AppData\Local\Temp\nsy371A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy371A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy371A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy371A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy371A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3f136962e3de8c3e5065412426f4bc4c

            SHA1

            398c29a10ac2ab102769578bc42372f0f97da3f5

            SHA256

            f018fdafe11499b8c2afec645203033d07cf0f923ff793b5222800dd35496377

            SHA512

            e3fa7da83bd40079f5b32669a4bd0e0168597a1c6429c53f47891e83d18eb05bffc72d75d4d43238e211bbf0abab1261e06151274fadeafa6cd6a5464e66e090

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3f136962e3de8c3e5065412426f4bc4c

            SHA1

            398c29a10ac2ab102769578bc42372f0f97da3f5

            SHA256

            f018fdafe11499b8c2afec645203033d07cf0f923ff793b5222800dd35496377

            SHA512

            e3fa7da83bd40079f5b32669a4bd0e0168597a1c6429c53f47891e83d18eb05bffc72d75d4d43238e211bbf0abab1261e06151274fadeafa6cd6a5464e66e090

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3f136962e3de8c3e5065412426f4bc4c

            SHA1

            398c29a10ac2ab102769578bc42372f0f97da3f5

            SHA256

            f018fdafe11499b8c2afec645203033d07cf0f923ff793b5222800dd35496377

            SHA512

            e3fa7da83bd40079f5b32669a4bd0e0168597a1c6429c53f47891e83d18eb05bffc72d75d4d43238e211bbf0abab1261e06151274fadeafa6cd6a5464e66e090

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cc8edef244bcfdc2fdc45c018fda3caf

            SHA1

            b77f4e49c0b43e379f87aadf4f268820167d697d

            SHA256

            8683c592b33c2a3dfd30c452bbbcb7f7330432ce75c95ebd36f4c894a93ddf95

            SHA512

            7c6eebb96ffd63e2b80c4b092ffcd2113b30988ae33f87cebe19b2af41bb8ede90daa400fb527a1ee2e267f08689c3acd25d026fce64fdf4dfd57ce6c4077621

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cc8edef244bcfdc2fdc45c018fda3caf

            SHA1

            b77f4e49c0b43e379f87aadf4f268820167d697d

            SHA256

            8683c592b33c2a3dfd30c452bbbcb7f7330432ce75c95ebd36f4c894a93ddf95

            SHA512

            7c6eebb96ffd63e2b80c4b092ffcd2113b30988ae33f87cebe19b2af41bb8ede90daa400fb527a1ee2e267f08689c3acd25d026fce64fdf4dfd57ce6c4077621

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d9e2962cef33aab098f1e1b904dd7966

            SHA1

            d103da4713dab448d5f366eb0818dfe895794646

            SHA256

            27cb5748896e6da5ac722c8f39ff19d966fb31baa41f0198510335390794a379

            SHA512

            8abd7515c39dbe204d9315fd9c8c07936ff2f26d9c1b654c54db8d0f9fa3b2a92af836feae3317031940697a41e8d0601fc063e42827b5facbca9a35935f07db

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2d1cb50f31bc0e38b77a672421cd92fa

            SHA1

            9316180ede4b33566515627d5e1f3b029d96e869

            SHA256

            07a174d11f4e5cee0cb32bbd5b760cb5e27b2508c27afec742e61a9700296b72

            SHA512

            f627a5739b49d154174bdc106c2dd1183ff2099d395f119160b5059dc41aaa07f0048a1be8c9192dbbceb5ffb0846abc54521df3e88684ae3bd77192a6c5ea57

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f023e15f661b8872168751ca8bb042a8

            SHA1

            9b5e08fa04c6d5d23794a8694978bdfcad7d4720

            SHA256

            cec2f0d4c4046156cfbc7357e6a606b9348db24f1ba0b5ebaaaf1646c7ed293c

            SHA512

            f2e203bbd930acef5329434679a1fa83ade450cf99e8a705ce6aac3c293e044341c1f475b2ab68bc72a55ce07c92515cf2d59fcac2c6fb4dc63761df4f0b0062

          • memory/268-88-0x0000000000000000-mapping.dmp

          • memory/632-77-0x0000000000000000-mapping.dmp

          • memory/960-64-0x0000000000000000-mapping.dmp

          • memory/1364-87-0x0000000000000000-mapping.dmp

          • memory/1480-54-0x0000000076261000-0x0000000076263000-memory.dmp

            Filesize

            8KB

          • memory/1480-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1480-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1480-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1632-71-0x0000000000000000-mapping.dmp

          • memory/1660-59-0x0000000000000000-mapping.dmp

          • memory/1708-61-0x0000000000000000-mapping.dmp

          • memory/1724-82-0x0000000000000000-mapping.dmp

          • memory/1788-58-0x0000000000000000-mapping.dmp

          • memory/1960-81-0x0000000000000000-mapping.dmp

          • memory/1972-62-0x0000000000000000-mapping.dmp