Analysis

  • max time kernel
    64s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:58

General

  • Target

    3d18ca900ca5d7203766e7dadeb13986158fa76332924595e700f3e3d46e02b2.exe

  • Size

    447KB

  • MD5

    1332129c6f7e3ef158bc380ead211863

  • SHA1

    c8d26742bb7f8e2cfdf43098ac129910dfe93322

  • SHA256

    3d18ca900ca5d7203766e7dadeb13986158fa76332924595e700f3e3d46e02b2

  • SHA512

    7429156fcc9c8cc51c76a8fa915d470acd04c44e11eb00a2cabe67fcd5625c6af7a10d71819a734d3f0257bdef2a13c3b93ebb8bf85b6066d474d1467ac9caf5

  • SSDEEP

    12288:KVmIzY790y7AWv6ETXNRkQvgKSzdcOyYzUjkYMx3QVgL:K0yy796E84QzaYxKeL

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\3d18ca900ca5d7203766e7dadeb13986158fa76332924595e700f3e3d46e02b2.exe
    "C:\Users\Admin\AppData\Local\Temp\3d18ca900ca5d7203766e7dadeb13986158fa76332924595e700f3e3d46e02b2.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:616
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1312
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1356
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:624
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:860
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1288
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:932
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:880
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1740
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1152
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1292
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1752
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:996

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3d633be39713d1dd1fde2cb2b3b7f2e1

            SHA1

            6c7c4ece4d43be4a5be52ed4a0f1c8e7e89d04cf

            SHA256

            db4d5c91270396adf3d9b59a7fb73e4cbe74b662d4c09a964c6a07663f553340

            SHA512

            7fed8777860b5b7896eb840b4d1c6396d4ade7f51ecc6a640fa4f754eae2832d7fc22ff420e6ba791aaf9ef0a04cc19bf0d54263c07b25356919ebbdd37c779a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1d47d2050c69b6967698aae44c8d5053

            SHA1

            0f62cfb085dfef1038ce1ba5f3302d68dba19aed

            SHA256

            4ab553f883824514f1d4b47d836fa621a4b0b8195c226879636a1bf4488cb680

            SHA512

            06e143ef2ff23b9f9d9a74002805b2fec0730663d9054b2d2c770d76d203f8404f688ed0c8607f8042ea028f8164fd3afaeac5e746061c5f73fdb88b2870d7c1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            25e215abf4296d24a7466feb11d8007f

            SHA1

            cb0737ee3ea41071b2f1a2cdc0c9b3d64fa9e3ef

            SHA256

            0e15eecab04c1212c14f190c79b463d51d0bb9ab187ff9f14c7fb3366180812f

            SHA512

            c7a0a23c99fb6d9e59008d98a0c6176b5ccc6d9e03a9ec94f50ba8f9a271f1c5ad2548b0ac12297a81341a9b20a3dbed96a77fa145796c82e6f60fa5287bff57

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e3da2ac36bf05dc34429273f5561a156

            SHA1

            8d892ed556bafc6056ebb26abd04df618df5efdc

            SHA256

            1d304d21be0a3e1f745ad8afc612de21b729afc23ecb401b29643b9a9ee7683c

            SHA512

            7386ef778bff205be5494d95eab217891a02958789e29678883339a216a727d7bbaddee1a2fbbca7eef2d20a9b4d73a6ade9a362a86b442c38fa5c8e203d9ae8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e3da2ac36bf05dc34429273f5561a156

            SHA1

            8d892ed556bafc6056ebb26abd04df618df5efdc

            SHA256

            1d304d21be0a3e1f745ad8afc612de21b729afc23ecb401b29643b9a9ee7683c

            SHA512

            7386ef778bff205be5494d95eab217891a02958789e29678883339a216a727d7bbaddee1a2fbbca7eef2d20a9b4d73a6ade9a362a86b442c38fa5c8e203d9ae8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cedf889e8ae16c1ff1425556d651b1c7

            SHA1

            761de1f2c78940ffd01f06f90fcfac95298f2787

            SHA256

            15799a7387b35c4ab862879e4b44689e15e41971c0866a0aa6fa957024077375

            SHA512

            69b674a7e67b146c9a02ebb6aa3694886778fc7cc9641975bdf6ca19278341dcf9b1a55751297c33864ba4d235d2403f75f39920c4dfee9ce7c8ad3e0bdd618d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cedf889e8ae16c1ff1425556d651b1c7

            SHA1

            761de1f2c78940ffd01f06f90fcfac95298f2787

            SHA256

            15799a7387b35c4ab862879e4b44689e15e41971c0866a0aa6fa957024077375

            SHA512

            69b674a7e67b146c9a02ebb6aa3694886778fc7cc9641975bdf6ca19278341dcf9b1a55751297c33864ba4d235d2403f75f39920c4dfee9ce7c8ad3e0bdd618d

          • \Users\Admin\AppData\Local\Temp\nsj28B9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj28B9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj28B9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj28B9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj28B9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3d633be39713d1dd1fde2cb2b3b7f2e1

            SHA1

            6c7c4ece4d43be4a5be52ed4a0f1c8e7e89d04cf

            SHA256

            db4d5c91270396adf3d9b59a7fb73e4cbe74b662d4c09a964c6a07663f553340

            SHA512

            7fed8777860b5b7896eb840b4d1c6396d4ade7f51ecc6a640fa4f754eae2832d7fc22ff420e6ba791aaf9ef0a04cc19bf0d54263c07b25356919ebbdd37c779a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3d633be39713d1dd1fde2cb2b3b7f2e1

            SHA1

            6c7c4ece4d43be4a5be52ed4a0f1c8e7e89d04cf

            SHA256

            db4d5c91270396adf3d9b59a7fb73e4cbe74b662d4c09a964c6a07663f553340

            SHA512

            7fed8777860b5b7896eb840b4d1c6396d4ade7f51ecc6a640fa4f754eae2832d7fc22ff420e6ba791aaf9ef0a04cc19bf0d54263c07b25356919ebbdd37c779a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3d633be39713d1dd1fde2cb2b3b7f2e1

            SHA1

            6c7c4ece4d43be4a5be52ed4a0f1c8e7e89d04cf

            SHA256

            db4d5c91270396adf3d9b59a7fb73e4cbe74b662d4c09a964c6a07663f553340

            SHA512

            7fed8777860b5b7896eb840b4d1c6396d4ade7f51ecc6a640fa4f754eae2832d7fc22ff420e6ba791aaf9ef0a04cc19bf0d54263c07b25356919ebbdd37c779a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1d47d2050c69b6967698aae44c8d5053

            SHA1

            0f62cfb085dfef1038ce1ba5f3302d68dba19aed

            SHA256

            4ab553f883824514f1d4b47d836fa621a4b0b8195c226879636a1bf4488cb680

            SHA512

            06e143ef2ff23b9f9d9a74002805b2fec0730663d9054b2d2c770d76d203f8404f688ed0c8607f8042ea028f8164fd3afaeac5e746061c5f73fdb88b2870d7c1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1d47d2050c69b6967698aae44c8d5053

            SHA1

            0f62cfb085dfef1038ce1ba5f3302d68dba19aed

            SHA256

            4ab553f883824514f1d4b47d836fa621a4b0b8195c226879636a1bf4488cb680

            SHA512

            06e143ef2ff23b9f9d9a74002805b2fec0730663d9054b2d2c770d76d203f8404f688ed0c8607f8042ea028f8164fd3afaeac5e746061c5f73fdb88b2870d7c1

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            25e215abf4296d24a7466feb11d8007f

            SHA1

            cb0737ee3ea41071b2f1a2cdc0c9b3d64fa9e3ef

            SHA256

            0e15eecab04c1212c14f190c79b463d51d0bb9ab187ff9f14c7fb3366180812f

            SHA512

            c7a0a23c99fb6d9e59008d98a0c6176b5ccc6d9e03a9ec94f50ba8f9a271f1c5ad2548b0ac12297a81341a9b20a3dbed96a77fa145796c82e6f60fa5287bff57

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e3da2ac36bf05dc34429273f5561a156

            SHA1

            8d892ed556bafc6056ebb26abd04df618df5efdc

            SHA256

            1d304d21be0a3e1f745ad8afc612de21b729afc23ecb401b29643b9a9ee7683c

            SHA512

            7386ef778bff205be5494d95eab217891a02958789e29678883339a216a727d7bbaddee1a2fbbca7eef2d20a9b4d73a6ade9a362a86b442c38fa5c8e203d9ae8

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            cedf889e8ae16c1ff1425556d651b1c7

            SHA1

            761de1f2c78940ffd01f06f90fcfac95298f2787

            SHA256

            15799a7387b35c4ab862879e4b44689e15e41971c0866a0aa6fa957024077375

            SHA512

            69b674a7e67b146c9a02ebb6aa3694886778fc7cc9641975bdf6ca19278341dcf9b1a55751297c33864ba4d235d2403f75f39920c4dfee9ce7c8ad3e0bdd618d

          • memory/616-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

            Filesize

            8KB

          • memory/624-60-0x0000000000000000-mapping.dmp

          • memory/860-61-0x0000000000000000-mapping.dmp

          • memory/880-75-0x0000000000000000-mapping.dmp

          • memory/932-69-0x0000000000000000-mapping.dmp

          • memory/1152-85-0x0000000000000000-mapping.dmp

          • memory/1288-63-0x0000000000000000-mapping.dmp

          • memory/1292-86-0x0000000000000000-mapping.dmp

          • memory/1312-57-0x0000000000000000-mapping.dmp

          • memory/1356-58-0x0000000000000000-mapping.dmp

          • memory/1740-80-0x0000000000000000-mapping.dmp

          • memory/1992-79-0x0000000000000000-mapping.dmp