Analysis

  • max time kernel
    45s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:13

General

  • Target

    c20e5bf2ebcb68437bc96c321091455fc96b4916bb740263e9cbacf6d913dc4a.exe

  • Size

    602KB

  • MD5

    dfd16f8f581b184a60d3e08b128b93d7

  • SHA1

    a38fea71511f97203082aa641e084ef7fbcf609d

  • SHA256

    c20e5bf2ebcb68437bc96c321091455fc96b4916bb740263e9cbacf6d913dc4a

  • SHA512

    98021e1249e89798c67ae2e8afe1a352d29b6536c9826452dfd5dc19d9c28187c1b1d9f69daac15ad0fd45d353748ba489cec7444a3a6547ddf431060144888c

  • SSDEEP

    12288:0Iny5DYTgxU91pxjE0O5rnUt0Jd0hX/RkUNfSPpDtO8cAFYTM:yUTgxU91HE0AwWH8XVROpDtOPAFp

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\c20e5bf2ebcb68437bc96c321091455fc96b4916bb740263e9cbacf6d913dc4a.exe
    "C:\Users\Admin\AppData\Local\Temp\c20e5bf2ebcb68437bc96c321091455fc96b4916bb740263e9cbacf6d913dc4a.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:1464
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1324
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1376
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:844
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1664
        • 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:756
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1888
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:960
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1080
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1720
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1512

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            05941b47595f4162a274326900565b21

            SHA1

            189ae8e4cc6a692ca0d9ea2f694af975889b4fc0

            SHA256

            ac72258b16c6309a4fe7960f714e2a4241683924729cba2b0251a11997075d85

            SHA512

            ca1dd8abdd3f11f3095157167df9b23993f018a5b3a96677709773600bf576b9380dfd820ed8972b9f306f6be3afe97098c24977a22f8b1e3516d9a956bcdf13

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            df25b29b7dcfa886d6a3c4ce2cd66e63

            SHA1

            08eafdc5b6b452dde20032b77e40eedf92ded027

            SHA256

            1b6916e2ed83846eded983f844ac96f6c8b30d04262ea50f2fa051f8a4560e3f

            SHA512

            76ca8a1efa14fee7100242e3e01a3a1cdd3bc903840e19cc0ba886d077f3a527cb7155a75fe8a2e04c9e218557bf7aa0d15a064eb68e5151a6ed1863564894c7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            aa252028ac020f927725581c22f40bbc

            SHA1

            02689abd941a4e82a928b77a7a82e64b399377f6

            SHA256

            5a7afcfdd9164caa978bc8fb7aecba3c0550f21ba195756c46cfa2f1c87c1443

            SHA512

            5266f9f6b489db27da51509c147d8a1d16f46357cec5ebbed05c18265441080af74d1c80ebed5d0dfcd7c12ce3562b7bd6eb861bf526ef708c3b1c38c4cf1451

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5dfe22e15ee45104eaf6fdf9707bf6da

            SHA1

            ba711f61cc822cebf4ff3fc809f83fd9311ca11f

            SHA256

            f63a11390872263df46bb8c1b567dc88537f004dcc71f55a25a95c52ad09a0f6

            SHA512

            d9ff2399d49469c5bf5d64d2b1775d8a66a6414313249203598dffde68379800e4ef96ba5e868f57068a7df0168d412212257c4ffe8394c55d76c0915ad665ec

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5dfe22e15ee45104eaf6fdf9707bf6da

            SHA1

            ba711f61cc822cebf4ff3fc809f83fd9311ca11f

            SHA256

            f63a11390872263df46bb8c1b567dc88537f004dcc71f55a25a95c52ad09a0f6

            SHA512

            d9ff2399d49469c5bf5d64d2b1775d8a66a6414313249203598dffde68379800e4ef96ba5e868f57068a7df0168d412212257c4ffe8394c55d76c0915ad665ec

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b9550d261d5ae265e003a4b6c7397579

            SHA1

            ea190aa50798e574440620fb923e6bb5f0d5e4d8

            SHA256

            aab77641887ad7cb6a0666f78123f11bf067930bb41027a8a610752a64a00b0b

            SHA512

            84fa195dc9df282b00291039e75ee4dc072dc7fa4f5f3d0dd0331e3832f611bccffbc30916d91d941ffb88b934295e9288f435cb45509d4ddec45cc5265d4147

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b9550d261d5ae265e003a4b6c7397579

            SHA1

            ea190aa50798e574440620fb923e6bb5f0d5e4d8

            SHA256

            aab77641887ad7cb6a0666f78123f11bf067930bb41027a8a610752a64a00b0b

            SHA512

            84fa195dc9df282b00291039e75ee4dc072dc7fa4f5f3d0dd0331e3832f611bccffbc30916d91d941ffb88b934295e9288f435cb45509d4ddec45cc5265d4147

          • \Users\Admin\AppData\Local\Temp\nsj397B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj397B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj397B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj397B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj397B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            05941b47595f4162a274326900565b21

            SHA1

            189ae8e4cc6a692ca0d9ea2f694af975889b4fc0

            SHA256

            ac72258b16c6309a4fe7960f714e2a4241683924729cba2b0251a11997075d85

            SHA512

            ca1dd8abdd3f11f3095157167df9b23993f018a5b3a96677709773600bf576b9380dfd820ed8972b9f306f6be3afe97098c24977a22f8b1e3516d9a956bcdf13

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            05941b47595f4162a274326900565b21

            SHA1

            189ae8e4cc6a692ca0d9ea2f694af975889b4fc0

            SHA256

            ac72258b16c6309a4fe7960f714e2a4241683924729cba2b0251a11997075d85

            SHA512

            ca1dd8abdd3f11f3095157167df9b23993f018a5b3a96677709773600bf576b9380dfd820ed8972b9f306f6be3afe97098c24977a22f8b1e3516d9a956bcdf13

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            05941b47595f4162a274326900565b21

            SHA1

            189ae8e4cc6a692ca0d9ea2f694af975889b4fc0

            SHA256

            ac72258b16c6309a4fe7960f714e2a4241683924729cba2b0251a11997075d85

            SHA512

            ca1dd8abdd3f11f3095157167df9b23993f018a5b3a96677709773600bf576b9380dfd820ed8972b9f306f6be3afe97098c24977a22f8b1e3516d9a956bcdf13

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            df25b29b7dcfa886d6a3c4ce2cd66e63

            SHA1

            08eafdc5b6b452dde20032b77e40eedf92ded027

            SHA256

            1b6916e2ed83846eded983f844ac96f6c8b30d04262ea50f2fa051f8a4560e3f

            SHA512

            76ca8a1efa14fee7100242e3e01a3a1cdd3bc903840e19cc0ba886d077f3a527cb7155a75fe8a2e04c9e218557bf7aa0d15a064eb68e5151a6ed1863564894c7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            df25b29b7dcfa886d6a3c4ce2cd66e63

            SHA1

            08eafdc5b6b452dde20032b77e40eedf92ded027

            SHA256

            1b6916e2ed83846eded983f844ac96f6c8b30d04262ea50f2fa051f8a4560e3f

            SHA512

            76ca8a1efa14fee7100242e3e01a3a1cdd3bc903840e19cc0ba886d077f3a527cb7155a75fe8a2e04c9e218557bf7aa0d15a064eb68e5151a6ed1863564894c7

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            aa252028ac020f927725581c22f40bbc

            SHA1

            02689abd941a4e82a928b77a7a82e64b399377f6

            SHA256

            5a7afcfdd9164caa978bc8fb7aecba3c0550f21ba195756c46cfa2f1c87c1443

            SHA512

            5266f9f6b489db27da51509c147d8a1d16f46357cec5ebbed05c18265441080af74d1c80ebed5d0dfcd7c12ce3562b7bd6eb861bf526ef708c3b1c38c4cf1451

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5dfe22e15ee45104eaf6fdf9707bf6da

            SHA1

            ba711f61cc822cebf4ff3fc809f83fd9311ca11f

            SHA256

            f63a11390872263df46bb8c1b567dc88537f004dcc71f55a25a95c52ad09a0f6

            SHA512

            d9ff2399d49469c5bf5d64d2b1775d8a66a6414313249203598dffde68379800e4ef96ba5e868f57068a7df0168d412212257c4ffe8394c55d76c0915ad665ec

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b9550d261d5ae265e003a4b6c7397579

            SHA1

            ea190aa50798e574440620fb923e6bb5f0d5e4d8

            SHA256

            aab77641887ad7cb6a0666f78123f11bf067930bb41027a8a610752a64a00b0b

            SHA512

            84fa195dc9df282b00291039e75ee4dc072dc7fa4f5f3d0dd0331e3832f611bccffbc30916d91d941ffb88b934295e9288f435cb45509d4ddec45cc5265d4147

          • memory/756-80-0x0000000000000000-mapping.dmp

          • memory/844-64-0x0000000000000000-mapping.dmp

          • memory/960-86-0x0000000000000000-mapping.dmp

          • memory/1080-87-0x0000000000000000-mapping.dmp

          • memory/1112-58-0x0000000000000000-mapping.dmp

          • memory/1324-57-0x0000000000000000-mapping.dmp

          • memory/1376-62-0x0000000000000000-mapping.dmp

          • memory/1464-54-0x0000000075B51000-0x0000000075B53000-memory.dmp

            Filesize

            8KB

          • memory/1464-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1464-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1664-70-0x0000000000000000-mapping.dmp

          • memory/1840-76-0x0000000000000000-mapping.dmp

          • memory/1888-81-0x0000000000000000-mapping.dmp

          • memory/2024-61-0x0000000000000000-mapping.dmp