Analysis

  • max time kernel
    62s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:19

General

  • Target

    8ca05eb24fd0d810f77ea2c49deb631e72bd8a5e6df27253b37378a087efbd67.exe

  • Size

    602KB

  • MD5

    b361740869d6ab415bc0e6f2c06b33b1

  • SHA1

    9808079f3f272dd6e1be528f59602f2519d9ab52

  • SHA256

    8ca05eb24fd0d810f77ea2c49deb631e72bd8a5e6df27253b37378a087efbd67

  • SHA512

    647833655d5dc233e28aa0b9131e964f2fb1ff8c6f425ac677d774a8a0144455c73b4bb5f7c8127e019ff195e785b03170f01fcf33e5c1fb14e7577e781e7146

  • SSDEEP

    12288:9Iny5DYTt84TLLLhWS7ziU2ldzog85+HfCJaqMN1Xbir6ryvk9u:pUTt8KPLhWYN2l53U+Hea3N1Xbd2vk9

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\8ca05eb24fd0d810f77ea2c49deb631e72bd8a5e6df27253b37378a087efbd67.exe
    "C:\Users\Admin\AppData\Local\Temp\8ca05eb24fd0d810f77ea2c49deb631e72bd8a5e6df27253b37378a087efbd67.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:1248
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:636
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:432
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:580
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:468
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1912
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1944
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:916
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:480
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:428
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1660
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1364
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1308

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc812f098df521f0f683ad644486ef65

            SHA1

            7eff484f6b11cea5b0b128208c709bfa771d281d

            SHA256

            e7c8cc8c62d71934197d9e0fb8e18c2682a13ba9701d403f24b0f316b05842c1

            SHA512

            76320a0d8db869c36eec8053982da482d412f76704f083086aef904ece0b4da66abbf21f320210d192f2ba41574b9f71ecc5c9f22325f97cc6d5c97ec5f1408d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            061a8c137c8419da3c624452b4c39f0e

            SHA1

            1afb086b67394d0a3ec0f7cf63a94a0789d028b4

            SHA256

            360cdd5cc1703b80f4c4b2e0a66fd22d7acac8af14177725f7453bac92e1d0e6

            SHA512

            809d0289b35569da1a88b8eaea911506564fd8a76ac459dee0d70794445079b908a6a9b94a5544e29c94173fd32f4acf29db1c462ced346dfc221305bedee022

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            82c5677317ab76d9f135209319e30990

            SHA1

            19834a725ab889954b2632194f30bd8739e2fcc7

            SHA256

            127bdf6275b03467cce335768f6d0026e1e60f4545dbb2f6076097f20623ac2e

            SHA512

            ed3e4ba26d64a31595dca2f281bf7b452e35dcd94498246592b51806bb04ed39e0c0f041b0d2daa1f0e90507bc05ef205f4fd80c6045408df52ad8f2dedeed57

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a9ce9e520e3a51732a559301340b304d

            SHA1

            025e33cf8d41b78a0d5713c9fc2a1330f43f4b7f

            SHA256

            17c319b10b8780c96b75b4efd278c819559c691c77489ff72954bbac594fff04

            SHA512

            60f8d37250ae21f522c1460678e61e50b1b02ddc2a5b1dfb05836fe0d6fba88402ed6f8f339829f3a6097c518e2dfdc36864fce7d309090725214737ad82e8bd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a9ce9e520e3a51732a559301340b304d

            SHA1

            025e33cf8d41b78a0d5713c9fc2a1330f43f4b7f

            SHA256

            17c319b10b8780c96b75b4efd278c819559c691c77489ff72954bbac594fff04

            SHA512

            60f8d37250ae21f522c1460678e61e50b1b02ddc2a5b1dfb05836fe0d6fba88402ed6f8f339829f3a6097c518e2dfdc36864fce7d309090725214737ad82e8bd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c101cf8feaaec6a6a9c63a5c780d073d

            SHA1

            b6753dfe911eaeb79d08e30fdd962d4c32301273

            SHA256

            08ae335e9ac8c641531c195a54eb356c3ce8b70e919e383adbf1a185ac12dbdb

            SHA512

            041120413a6d51237d1b2557a29114a2f6da435cdbcf07bccf82491add411dc88408fbbc1cb96728331dae9614c78654e95b7e5334497e87c2247ac55c6b9542

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c101cf8feaaec6a6a9c63a5c780d073d

            SHA1

            b6753dfe911eaeb79d08e30fdd962d4c32301273

            SHA256

            08ae335e9ac8c641531c195a54eb356c3ce8b70e919e383adbf1a185ac12dbdb

            SHA512

            041120413a6d51237d1b2557a29114a2f6da435cdbcf07bccf82491add411dc88408fbbc1cb96728331dae9614c78654e95b7e5334497e87c2247ac55c6b9542

          • \Users\Admin\AppData\Local\Temp\nsiE36.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsiE36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiE36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiE36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiE36.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc812f098df521f0f683ad644486ef65

            SHA1

            7eff484f6b11cea5b0b128208c709bfa771d281d

            SHA256

            e7c8cc8c62d71934197d9e0fb8e18c2682a13ba9701d403f24b0f316b05842c1

            SHA512

            76320a0d8db869c36eec8053982da482d412f76704f083086aef904ece0b4da66abbf21f320210d192f2ba41574b9f71ecc5c9f22325f97cc6d5c97ec5f1408d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc812f098df521f0f683ad644486ef65

            SHA1

            7eff484f6b11cea5b0b128208c709bfa771d281d

            SHA256

            e7c8cc8c62d71934197d9e0fb8e18c2682a13ba9701d403f24b0f316b05842c1

            SHA512

            76320a0d8db869c36eec8053982da482d412f76704f083086aef904ece0b4da66abbf21f320210d192f2ba41574b9f71ecc5c9f22325f97cc6d5c97ec5f1408d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bc812f098df521f0f683ad644486ef65

            SHA1

            7eff484f6b11cea5b0b128208c709bfa771d281d

            SHA256

            e7c8cc8c62d71934197d9e0fb8e18c2682a13ba9701d403f24b0f316b05842c1

            SHA512

            76320a0d8db869c36eec8053982da482d412f76704f083086aef904ece0b4da66abbf21f320210d192f2ba41574b9f71ecc5c9f22325f97cc6d5c97ec5f1408d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            061a8c137c8419da3c624452b4c39f0e

            SHA1

            1afb086b67394d0a3ec0f7cf63a94a0789d028b4

            SHA256

            360cdd5cc1703b80f4c4b2e0a66fd22d7acac8af14177725f7453bac92e1d0e6

            SHA512

            809d0289b35569da1a88b8eaea911506564fd8a76ac459dee0d70794445079b908a6a9b94a5544e29c94173fd32f4acf29db1c462ced346dfc221305bedee022

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            061a8c137c8419da3c624452b4c39f0e

            SHA1

            1afb086b67394d0a3ec0f7cf63a94a0789d028b4

            SHA256

            360cdd5cc1703b80f4c4b2e0a66fd22d7acac8af14177725f7453bac92e1d0e6

            SHA512

            809d0289b35569da1a88b8eaea911506564fd8a76ac459dee0d70794445079b908a6a9b94a5544e29c94173fd32f4acf29db1c462ced346dfc221305bedee022

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            82c5677317ab76d9f135209319e30990

            SHA1

            19834a725ab889954b2632194f30bd8739e2fcc7

            SHA256

            127bdf6275b03467cce335768f6d0026e1e60f4545dbb2f6076097f20623ac2e

            SHA512

            ed3e4ba26d64a31595dca2f281bf7b452e35dcd94498246592b51806bb04ed39e0c0f041b0d2daa1f0e90507bc05ef205f4fd80c6045408df52ad8f2dedeed57

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a9ce9e520e3a51732a559301340b304d

            SHA1

            025e33cf8d41b78a0d5713c9fc2a1330f43f4b7f

            SHA256

            17c319b10b8780c96b75b4efd278c819559c691c77489ff72954bbac594fff04

            SHA512

            60f8d37250ae21f522c1460678e61e50b1b02ddc2a5b1dfb05836fe0d6fba88402ed6f8f339829f3a6097c518e2dfdc36864fce7d309090725214737ad82e8bd

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c101cf8feaaec6a6a9c63a5c780d073d

            SHA1

            b6753dfe911eaeb79d08e30fdd962d4c32301273

            SHA256

            08ae335e9ac8c641531c195a54eb356c3ce8b70e919e383adbf1a185ac12dbdb

            SHA512

            041120413a6d51237d1b2557a29114a2f6da435cdbcf07bccf82491add411dc88408fbbc1cb96728331dae9614c78654e95b7e5334497e87c2247ac55c6b9542

          • memory/428-87-0x0000000000000000-mapping.dmp

          • memory/432-61-0x0000000000000000-mapping.dmp

          • memory/468-64-0x0000000000000000-mapping.dmp

          • memory/480-82-0x0000000000000000-mapping.dmp

          • memory/580-62-0x0000000000000000-mapping.dmp

          • memory/636-59-0x0000000000000000-mapping.dmp

          • memory/916-81-0x0000000000000000-mapping.dmp

          • memory/1248-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1248-54-0x00000000765A1000-0x00000000765A3000-memory.dmp

            Filesize

            8KB

          • memory/1248-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1248-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1660-88-0x0000000000000000-mapping.dmp

          • memory/1912-71-0x0000000000000000-mapping.dmp

          • memory/1944-77-0x0000000000000000-mapping.dmp

          • memory/2020-57-0x0000000000000000-mapping.dmp