Analysis

  • max time kernel
    20s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:55

General

  • Target

    6c1f512592b5528d395356cf53d2a622b7384bc09979941aa912a29eda80ae48.exe

  • Size

    446KB

  • MD5

    847723d16e1c0d00fc4c6862d83ad72b

  • SHA1

    3a7e0a91b7f438700338217e3246dfdc4625a5d2

  • SHA256

    6c1f512592b5528d395356cf53d2a622b7384bc09979941aa912a29eda80ae48

  • SHA512

    03230df19645905fdfc85e0e19d7de714cbe5e0208b7024b0853f00447cff87b2bc03319442a6f4ed4a4e837617ba44e4da487cb23dcc7c6b1233b4eae0dce21

  • SSDEEP

    12288:S1EE1j0gAwWQhrY+IuSwfA2U3Do2ujRwJI:S1D0SxrYDuSsAhkMI

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\6c1f512592b5528d395356cf53d2a622b7384bc09979941aa912a29eda80ae48.exe
    "C:\Users\Admin\AppData\Local\Temp\6c1f512592b5528d395356cf53d2a622b7384bc09979941aa912a29eda80ae48.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:1992
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1504
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1656
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1436
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1720
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1588
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1664
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:576
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:772
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:672
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1256
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2024
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1748

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a83ceb48a0d45f94748c8b03c431fdfd

            SHA1

            0bc31e86776efa2a52c8a9bf6933deb33de9ba91

            SHA256

            36acaea61e613e92fea93d47ae657166e82a4e04ecbe597ca63bcbfd1da4f71b

            SHA512

            ae74b5646aa6c51dc5f7341bdd64595592e59517670f4b846526de82d056e16e4cf97d752909a61c80c29e3b37497b4c451fec16c8ed858c0a9ceb93b87915d0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            375850724cfdf72401bb18e8c5bbe82e

            SHA1

            5caf701069ad5f731e7ea4982d7c3734dcb8c548

            SHA256

            165b21661b498e751f2db0d27f44d581414b6aaef53ecc59a53a53dd55b54c45

            SHA512

            6ea1a506c2c6a975805d4df408850b526521094b574200609e038e5ec2a6e16a08cb2dbed87b2f8deb202ad18abfb200e0ba6605ffe9ec22afb97129f39b6eca

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3fb6c1a37d7a68374143e3e036c827ac

            SHA1

            53722f8371abcf4c62bb8df97b3005eb30589a2d

            SHA256

            9faba28a4b8e2722af97eccc3fc5d46bc980ef78e61ce7c53479f9ad2ff557c3

            SHA512

            1a670c2cbba1de19fe0b08bf83b8efea2995f7740e8019569b56cfd41066caa3c42e27804b3ed8449d2f6b0ab776860bc040cd56c0098aae9c9901c6ee8c1c5d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a3939bab35caa64d155209e0d6de52b2

            SHA1

            2caf77e3f587e254bc0eca086ae5a7fc4428d695

            SHA256

            c339d289d486a79f6398e1c2f8f9fbe8fdb6c3b8b59dc7e912d3431f1889e32d

            SHA512

            002fea9cf91157208981fb4e670cddce7ea186f08eea79f5f00e69c877670524b717630df328c6361b1fdd676b059248ea4cc7aa1e353e1ed2ee09f13a4e0252

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a3939bab35caa64d155209e0d6de52b2

            SHA1

            2caf77e3f587e254bc0eca086ae5a7fc4428d695

            SHA256

            c339d289d486a79f6398e1c2f8f9fbe8fdb6c3b8b59dc7e912d3431f1889e32d

            SHA512

            002fea9cf91157208981fb4e670cddce7ea186f08eea79f5f00e69c877670524b717630df328c6361b1fdd676b059248ea4cc7aa1e353e1ed2ee09f13a4e0252

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            897c44f0047fcd5889dcb65cdcc50b1a

            SHA1

            36f68b3acfbc43ccb3d057142eec05b98a9f54d7

            SHA256

            788211ecd1ec5d7278b22d253b5a1db43bc9f33b889d72767bc711fc8896624c

            SHA512

            d13b8967feef6449855c965921ffa09daebe511fe25c097657861105582b71d7856c4640f6b71c8f190a5c5b7c4f85e4af29815446b815c5a03242bf45841584

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            897c44f0047fcd5889dcb65cdcc50b1a

            SHA1

            36f68b3acfbc43ccb3d057142eec05b98a9f54d7

            SHA256

            788211ecd1ec5d7278b22d253b5a1db43bc9f33b889d72767bc711fc8896624c

            SHA512

            d13b8967feef6449855c965921ffa09daebe511fe25c097657861105582b71d7856c4640f6b71c8f190a5c5b7c4f85e4af29815446b815c5a03242bf45841584

          • \Users\Admin\AppData\Local\Temp\nsj4869.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj4869.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj4869.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj4869.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj4869.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a83ceb48a0d45f94748c8b03c431fdfd

            SHA1

            0bc31e86776efa2a52c8a9bf6933deb33de9ba91

            SHA256

            36acaea61e613e92fea93d47ae657166e82a4e04ecbe597ca63bcbfd1da4f71b

            SHA512

            ae74b5646aa6c51dc5f7341bdd64595592e59517670f4b846526de82d056e16e4cf97d752909a61c80c29e3b37497b4c451fec16c8ed858c0a9ceb93b87915d0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a83ceb48a0d45f94748c8b03c431fdfd

            SHA1

            0bc31e86776efa2a52c8a9bf6933deb33de9ba91

            SHA256

            36acaea61e613e92fea93d47ae657166e82a4e04ecbe597ca63bcbfd1da4f71b

            SHA512

            ae74b5646aa6c51dc5f7341bdd64595592e59517670f4b846526de82d056e16e4cf97d752909a61c80c29e3b37497b4c451fec16c8ed858c0a9ceb93b87915d0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a83ceb48a0d45f94748c8b03c431fdfd

            SHA1

            0bc31e86776efa2a52c8a9bf6933deb33de9ba91

            SHA256

            36acaea61e613e92fea93d47ae657166e82a4e04ecbe597ca63bcbfd1da4f71b

            SHA512

            ae74b5646aa6c51dc5f7341bdd64595592e59517670f4b846526de82d056e16e4cf97d752909a61c80c29e3b37497b4c451fec16c8ed858c0a9ceb93b87915d0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            375850724cfdf72401bb18e8c5bbe82e

            SHA1

            5caf701069ad5f731e7ea4982d7c3734dcb8c548

            SHA256

            165b21661b498e751f2db0d27f44d581414b6aaef53ecc59a53a53dd55b54c45

            SHA512

            6ea1a506c2c6a975805d4df408850b526521094b574200609e038e5ec2a6e16a08cb2dbed87b2f8deb202ad18abfb200e0ba6605ffe9ec22afb97129f39b6eca

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            375850724cfdf72401bb18e8c5bbe82e

            SHA1

            5caf701069ad5f731e7ea4982d7c3734dcb8c548

            SHA256

            165b21661b498e751f2db0d27f44d581414b6aaef53ecc59a53a53dd55b54c45

            SHA512

            6ea1a506c2c6a975805d4df408850b526521094b574200609e038e5ec2a6e16a08cb2dbed87b2f8deb202ad18abfb200e0ba6605ffe9ec22afb97129f39b6eca

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3fb6c1a37d7a68374143e3e036c827ac

            SHA1

            53722f8371abcf4c62bb8df97b3005eb30589a2d

            SHA256

            9faba28a4b8e2722af97eccc3fc5d46bc980ef78e61ce7c53479f9ad2ff557c3

            SHA512

            1a670c2cbba1de19fe0b08bf83b8efea2995f7740e8019569b56cfd41066caa3c42e27804b3ed8449d2f6b0ab776860bc040cd56c0098aae9c9901c6ee8c1c5d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a3939bab35caa64d155209e0d6de52b2

            SHA1

            2caf77e3f587e254bc0eca086ae5a7fc4428d695

            SHA256

            c339d289d486a79f6398e1c2f8f9fbe8fdb6c3b8b59dc7e912d3431f1889e32d

            SHA512

            002fea9cf91157208981fb4e670cddce7ea186f08eea79f5f00e69c877670524b717630df328c6361b1fdd676b059248ea4cc7aa1e353e1ed2ee09f13a4e0252

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            897c44f0047fcd5889dcb65cdcc50b1a

            SHA1

            36f68b3acfbc43ccb3d057142eec05b98a9f54d7

            SHA256

            788211ecd1ec5d7278b22d253b5a1db43bc9f33b889d72767bc711fc8896624c

            SHA512

            d13b8967feef6449855c965921ffa09daebe511fe25c097657861105582b71d7856c4640f6b71c8f190a5c5b7c4f85e4af29815446b815c5a03242bf45841584

          • memory/576-79-0x0000000000000000-mapping.dmp

          • memory/672-85-0x0000000000000000-mapping.dmp

          • memory/772-80-0x0000000000000000-mapping.dmp

          • memory/980-57-0x0000000000000000-mapping.dmp

          • memory/1256-86-0x0000000000000000-mapping.dmp

          • memory/1436-61-0x0000000000000000-mapping.dmp

          • memory/1504-58-0x0000000000000000-mapping.dmp

          • memory/1588-69-0x0000000000000000-mapping.dmp

          • memory/1656-60-0x0000000000000000-mapping.dmp

          • memory/1664-75-0x0000000000000000-mapping.dmp

          • memory/1720-63-0x0000000000000000-mapping.dmp

          • memory/1992-54-0x0000000075281000-0x0000000075283000-memory.dmp

            Filesize

            8KB