Analysis

  • max time kernel
    148s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 13:46

General

  • Target

    c97b2061a4f59ceab911a99761a45da8cc4ca3fcb924ca3eda1fef29deb879b9.exe

  • Size

    561KB

  • MD5

    51d78c5c10d018c25d8deead57b14774

  • SHA1

    55c7d7981376c551eb7dde77412f0b0bdda151a7

  • SHA256

    c97b2061a4f59ceab911a99761a45da8cc4ca3fcb924ca3eda1fef29deb879b9

  • SHA512

    a28905caecc3fe3c4098aed205f9eb0a45880aeae718ec74495fc94e5d8c6cb4dcd4ca49c3b6955379b9341a526faee28c34719f24f4370ebb88cac8e4353389

  • SSDEEP

    12288:9PRYzG1G+rlJ2GhpFe4dFo9/Df0Uh8FO:EzG18GnkWu97pis

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c97b2061a4f59ceab911a99761a45da8cc4ca3fcb924ca3eda1fef29deb879b9.exe
    "C:\Users\Admin\AppData\Local\Temp\c97b2061a4f59ceab911a99761a45da8cc4ca3fcb924ca3eda1fef29deb879b9.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:4860
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:384
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4220
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4812
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4852
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4868
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5016
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4996
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4380
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:224
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4636
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4216
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1036

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsb8CD5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aefa843606d848c6e2f6ef839262431

            SHA1

            553c9efeb33ed4127e3e01c5809e223c2cea06a9

            SHA256

            afa58c962892dd7d9921852a4eb72bf4472a5b7312ecb13255c0428d542c955d

            SHA512

            08484c0bf2fa7dfd6071e394a1a7e816aa21c3ec3d51e4bc90924001ac563179743e452aac60e390d5c4ad34b244c9d8db824298f661f71f0c97b4eb89a37957

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aefa843606d848c6e2f6ef839262431

            SHA1

            553c9efeb33ed4127e3e01c5809e223c2cea06a9

            SHA256

            afa58c962892dd7d9921852a4eb72bf4472a5b7312ecb13255c0428d542c955d

            SHA512

            08484c0bf2fa7dfd6071e394a1a7e816aa21c3ec3d51e4bc90924001ac563179743e452aac60e390d5c4ad34b244c9d8db824298f661f71f0c97b4eb89a37957

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aefa843606d848c6e2f6ef839262431

            SHA1

            553c9efeb33ed4127e3e01c5809e223c2cea06a9

            SHA256

            afa58c962892dd7d9921852a4eb72bf4472a5b7312ecb13255c0428d542c955d

            SHA512

            08484c0bf2fa7dfd6071e394a1a7e816aa21c3ec3d51e4bc90924001ac563179743e452aac60e390d5c4ad34b244c9d8db824298f661f71f0c97b4eb89a37957

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aefa843606d848c6e2f6ef839262431

            SHA1

            553c9efeb33ed4127e3e01c5809e223c2cea06a9

            SHA256

            afa58c962892dd7d9921852a4eb72bf4472a5b7312ecb13255c0428d542c955d

            SHA512

            08484c0bf2fa7dfd6071e394a1a7e816aa21c3ec3d51e4bc90924001ac563179743e452aac60e390d5c4ad34b244c9d8db824298f661f71f0c97b4eb89a37957

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            12ac23a4d629fd8e363caa88b36b4922

            SHA1

            e986eb7c5cd5d14c131541c287d63ea25eda47d2

            SHA256

            90e2fef8c259953c772bf74d259fdd72da1af9a3696f072756e66880f5d55136

            SHA512

            bcebe26a1bfa74a279ae19c5168d699ee8c71878b427ba4b4346f760b60123abb1e698747d1fe3c781c640f21613c64b798e279e229756d30bf2f216f89e3f69

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            12ac23a4d629fd8e363caa88b36b4922

            SHA1

            e986eb7c5cd5d14c131541c287d63ea25eda47d2

            SHA256

            90e2fef8c259953c772bf74d259fdd72da1af9a3696f072756e66880f5d55136

            SHA512

            bcebe26a1bfa74a279ae19c5168d699ee8c71878b427ba4b4346f760b60123abb1e698747d1fe3c781c640f21613c64b798e279e229756d30bf2f216f89e3f69

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            12ac23a4d629fd8e363caa88b36b4922

            SHA1

            e986eb7c5cd5d14c131541c287d63ea25eda47d2

            SHA256

            90e2fef8c259953c772bf74d259fdd72da1af9a3696f072756e66880f5d55136

            SHA512

            bcebe26a1bfa74a279ae19c5168d699ee8c71878b427ba4b4346f760b60123abb1e698747d1fe3c781c640f21613c64b798e279e229756d30bf2f216f89e3f69

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            db061f4efc4acefe0ee30d89738d7b11

            SHA1

            82a3007ba35101f47121c7f6fdd421cc28d7febb

            SHA256

            c345e97e3d483d4376c1f47f65515c6d36715bb58502884be020244894412398

            SHA512

            d50a87064abd1001966c78808d36db937558dd3c36778b0ad858d1d7525b8c8ef3afe04c32be14fe0d53cbeb113471afb50e9d6ca42cd4992e39becddef7df9c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            db061f4efc4acefe0ee30d89738d7b11

            SHA1

            82a3007ba35101f47121c7f6fdd421cc28d7febb

            SHA256

            c345e97e3d483d4376c1f47f65515c6d36715bb58502884be020244894412398

            SHA512

            d50a87064abd1001966c78808d36db937558dd3c36778b0ad858d1d7525b8c8ef3afe04c32be14fe0d53cbeb113471afb50e9d6ca42cd4992e39becddef7df9c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            930692c5562e53c275e67b3fe60cf17a

            SHA1

            9639484252137c7c220cf9683d6e433d28b59350

            SHA256

            025d55a317ffe71ad03eb17976cd1749bb853f242297ee0f28c864e2163a0b37

            SHA512

            236dd4b25fdfb5845cffad13a1477c9e34b9f7525a74e6d6af6001b8a9ae4e855c1f5917abcb677d491f419e7f662b29242dc896514cd420ffb1b967bbbf1ad0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            930692c5562e53c275e67b3fe60cf17a

            SHA1

            9639484252137c7c220cf9683d6e433d28b59350

            SHA256

            025d55a317ffe71ad03eb17976cd1749bb853f242297ee0f28c864e2163a0b37

            SHA512

            236dd4b25fdfb5845cffad13a1477c9e34b9f7525a74e6d6af6001b8a9ae4e855c1f5917abcb677d491f419e7f662b29242dc896514cd420ffb1b967bbbf1ad0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            930692c5562e53c275e67b3fe60cf17a

            SHA1

            9639484252137c7c220cf9683d6e433d28b59350

            SHA256

            025d55a317ffe71ad03eb17976cd1749bb853f242297ee0f28c864e2163a0b37

            SHA512

            236dd4b25fdfb5845cffad13a1477c9e34b9f7525a74e6d6af6001b8a9ae4e855c1f5917abcb677d491f419e7f662b29242dc896514cd420ffb1b967bbbf1ad0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f11f60a4878f23d392cec8fe64927b2c

            SHA1

            1b8116a4af62df8db50ccb3e6f361e7f91d3b437

            SHA256

            5fd66252cc5277dc33f5938a3ca7819f6e91d5a55399f916db5d4e70b3d7f052

            SHA512

            618f46fc38ba2672b837f59c57996c58457dc47a4f139b3701d7886fdc4cd0930b69758288be435a00967e0773128c0518de5d2071de640374f5bff38aaf2426

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f11f60a4878f23d392cec8fe64927b2c

            SHA1

            1b8116a4af62df8db50ccb3e6f361e7f91d3b437

            SHA256

            5fd66252cc5277dc33f5938a3ca7819f6e91d5a55399f916db5d4e70b3d7f052

            SHA512

            618f46fc38ba2672b837f59c57996c58457dc47a4f139b3701d7886fdc4cd0930b69758288be435a00967e0773128c0518de5d2071de640374f5bff38aaf2426

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f11f60a4878f23d392cec8fe64927b2c

            SHA1

            1b8116a4af62df8db50ccb3e6f361e7f91d3b437

            SHA256

            5fd66252cc5277dc33f5938a3ca7819f6e91d5a55399f916db5d4e70b3d7f052

            SHA512

            618f46fc38ba2672b837f59c57996c58457dc47a4f139b3701d7886fdc4cd0930b69758288be435a00967e0773128c0518de5d2071de640374f5bff38aaf2426

          • memory/224-165-0x0000000000000000-mapping.dmp

          • memory/384-135-0x0000000000000000-mapping.dmp

          • memory/4220-137-0x0000000000000000-mapping.dmp

          • memory/4380-158-0x0000000000000000-mapping.dmp

          • memory/4636-166-0x0000000000000000-mapping.dmp

          • memory/4812-140-0x0000000000000000-mapping.dmp

          • memory/4852-141-0x0000000000000000-mapping.dmp

          • memory/4860-136-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4860-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4868-142-0x0000000000000000-mapping.dmp

          • memory/4964-159-0x0000000000000000-mapping.dmp

          • memory/4996-153-0x0000000000000000-mapping.dmp

          • memory/5016-147-0x0000000000000000-mapping.dmp