Analysis

  • max time kernel
    60s
  • 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 10:13

General

  • Target

    c1a606b8c605545ce57250e6ad2e4ef8896c90ac253939790abb2225a20f9352.exe

  • Size

    602KB

  • MD5

    6262de1121c65da8d6f264533d05d94c

  • SHA1

    7da91743d3937dd6cb309d5c6a3b6dc38941ca07

  • SHA256

    c1a606b8c605545ce57250e6ad2e4ef8896c90ac253939790abb2225a20f9352

  • SHA512

    8d27d8a0713b34e007f8e49b34271d1395c320ac6a580bd68d03dea8339a56c83fcac140b2f69a0cee055f409f314f6867ad329475981da35007fb77ed18b3c4

  • SSDEEP

    12288:uIny5DYT0E+suzkC8tty2Uy+GIF2TzG0fg/:wUT0E+fzklt28IF2bfg/

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\c1a606b8c605545ce57250e6ad2e4ef8896c90ac253939790abb2225a20f9352.exe
    "C:\Users\Admin\AppData\Local\Temp\c1a606b8c605545ce57250e6ad2e4ef8896c90ac253939790abb2225a20f9352.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:1628
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1508
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:548
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1120
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1972
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2028
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1104
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1772
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1692
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:828
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:696
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1740
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1556
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1600

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6b0471d3bf5cfd607343082de47e7b6b

            SHA1

            4128d170966cc5499cf2c3f98ebd1d59eba45f2c

            SHA256

            dcfea912109a7b81f02dab740c4decb0e4b05f41e1544c7410b8e36e77f27e57

            SHA512

            231ecbe2881998e3990439e2309fd8d7589c3b9a5fbd06fe569aed9ea2a9142431e6e2114a65e2e75392b527e1838c071d7026f7b450e0a7226f07794dd2b8af

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            7a1e805aea90c8ea8bd99c2153b11955

            SHA1

            86328077cecfece4e4376ca07cd768c36d34abd5

            SHA256

            4d97f19e95834cb7b92118963cc8095ad48f42d58fd5c462bdd81221faa5f3ca

            SHA512

            15e816beef9f1644f43d2c8dcae6409827f2914c80b0329012211c4b4a3f0388137f0b06214a6b259aeb3352560ba6815c7364c5ff1bf83c18eeda1f03600bb9

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            737cc1ee327a7960282eef24110967e2

            SHA1

            9332248ffacd8aafb343f5238c7f4aa4a3167f61

            SHA256

            d3a485456c3f5581d09da900bae1372f9606bd60fcb3aa25ff5420cbe8636643

            SHA512

            c953714ad800bc81acb140c2f9efc7d633fdd17fce9b0393d492f07a0cecb97c824f19c2d4e64985f44effbe74eceeeaa57507efecc389365e705f02471a0ca1

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            994b1e1c86519f22e35578cd80cc8365

            SHA1

            3edf45efabf5a9af14fbf545d89cc2a43c6d124b

            SHA256

            cd3bba3f6d8f80737c98f0ab72159cffa762b036804a4ddad7558237b1bd1bdf

            SHA512

            8bbe792dee763cd9d3c29d1ae3efd0aef559929241e2e345a8a0ace5252f50faa2748f799eed84d264f407b6cc5c396c6e60ccdd21715a841ffb1a013d7ae366

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            994b1e1c86519f22e35578cd80cc8365

            SHA1

            3edf45efabf5a9af14fbf545d89cc2a43c6d124b

            SHA256

            cd3bba3f6d8f80737c98f0ab72159cffa762b036804a4ddad7558237b1bd1bdf

            SHA512

            8bbe792dee763cd9d3c29d1ae3efd0aef559929241e2e345a8a0ace5252f50faa2748f799eed84d264f407b6cc5c396c6e60ccdd21715a841ffb1a013d7ae366

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            b7fbdc54fe8ec5f7d66cc0cc28608eb1

            SHA1

            e4efb1f8dfb9fb443720ee3e9c6ce260b444e767

            SHA256

            40554c9ca724678d56e1c9c3ab217d04cab40bd7bc9a46a647ae8dee062fd966

            SHA512

            bad07513e92f734e6282324d1d4a6c98e641637ad9639687ee771055eda1b72b4eb7f63e08c13503d6b2443018dce28469413e8197ba3e4fa5c1f9209972d262

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            b7fbdc54fe8ec5f7d66cc0cc28608eb1

            SHA1

            e4efb1f8dfb9fb443720ee3e9c6ce260b444e767

            SHA256

            40554c9ca724678d56e1c9c3ab217d04cab40bd7bc9a46a647ae8dee062fd966

            SHA512

            bad07513e92f734e6282324d1d4a6c98e641637ad9639687ee771055eda1b72b4eb7f63e08c13503d6b2443018dce28469413e8197ba3e4fa5c1f9209972d262

          • \Users\Admin\AppData\Local\Temp\nsyCBCA.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyCBCA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyCBCA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyCBCA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyCBCA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6b0471d3bf5cfd607343082de47e7b6b

            SHA1

            4128d170966cc5499cf2c3f98ebd1d59eba45f2c

            SHA256

            dcfea912109a7b81f02dab740c4decb0e4b05f41e1544c7410b8e36e77f27e57

            SHA512

            231ecbe2881998e3990439e2309fd8d7589c3b9a5fbd06fe569aed9ea2a9142431e6e2114a65e2e75392b527e1838c071d7026f7b450e0a7226f07794dd2b8af

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6b0471d3bf5cfd607343082de47e7b6b

            SHA1

            4128d170966cc5499cf2c3f98ebd1d59eba45f2c

            SHA256

            dcfea912109a7b81f02dab740c4decb0e4b05f41e1544c7410b8e36e77f27e57

            SHA512

            231ecbe2881998e3990439e2309fd8d7589c3b9a5fbd06fe569aed9ea2a9142431e6e2114a65e2e75392b527e1838c071d7026f7b450e0a7226f07794dd2b8af

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6b0471d3bf5cfd607343082de47e7b6b

            SHA1

            4128d170966cc5499cf2c3f98ebd1d59eba45f2c

            SHA256

            dcfea912109a7b81f02dab740c4decb0e4b05f41e1544c7410b8e36e77f27e57

            SHA512

            231ecbe2881998e3990439e2309fd8d7589c3b9a5fbd06fe569aed9ea2a9142431e6e2114a65e2e75392b527e1838c071d7026f7b450e0a7226f07794dd2b8af

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            7a1e805aea90c8ea8bd99c2153b11955

            SHA1

            86328077cecfece4e4376ca07cd768c36d34abd5

            SHA256

            4d97f19e95834cb7b92118963cc8095ad48f42d58fd5c462bdd81221faa5f3ca

            SHA512

            15e816beef9f1644f43d2c8dcae6409827f2914c80b0329012211c4b4a3f0388137f0b06214a6b259aeb3352560ba6815c7364c5ff1bf83c18eeda1f03600bb9

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            7a1e805aea90c8ea8bd99c2153b11955

            SHA1

            86328077cecfece4e4376ca07cd768c36d34abd5

            SHA256

            4d97f19e95834cb7b92118963cc8095ad48f42d58fd5c462bdd81221faa5f3ca

            SHA512

            15e816beef9f1644f43d2c8dcae6409827f2914c80b0329012211c4b4a3f0388137f0b06214a6b259aeb3352560ba6815c7364c5ff1bf83c18eeda1f03600bb9

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            737cc1ee327a7960282eef24110967e2

            SHA1

            9332248ffacd8aafb343f5238c7f4aa4a3167f61

            SHA256

            d3a485456c3f5581d09da900bae1372f9606bd60fcb3aa25ff5420cbe8636643

            SHA512

            c953714ad800bc81acb140c2f9efc7d633fdd17fce9b0393d492f07a0cecb97c824f19c2d4e64985f44effbe74eceeeaa57507efecc389365e705f02471a0ca1

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            994b1e1c86519f22e35578cd80cc8365

            SHA1

            3edf45efabf5a9af14fbf545d89cc2a43c6d124b

            SHA256

            cd3bba3f6d8f80737c98f0ab72159cffa762b036804a4ddad7558237b1bd1bdf

            SHA512

            8bbe792dee763cd9d3c29d1ae3efd0aef559929241e2e345a8a0ace5252f50faa2748f799eed84d264f407b6cc5c396c6e60ccdd21715a841ffb1a013d7ae366

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            b7fbdc54fe8ec5f7d66cc0cc28608eb1

            SHA1

            e4efb1f8dfb9fb443720ee3e9c6ce260b444e767

            SHA256

            40554c9ca724678d56e1c9c3ab217d04cab40bd7bc9a46a647ae8dee062fd966

            SHA512

            bad07513e92f734e6282324d1d4a6c98e641637ad9639687ee771055eda1b72b4eb7f63e08c13503d6b2443018dce28469413e8197ba3e4fa5c1f9209972d262

          • memory/548-58-0x0000000000000000-mapping.dmp
          • memory/696-86-0x0000000000000000-mapping.dmp
          • memory/828-81-0x0000000000000000-mapping.dmp
          • memory/1104-70-0x0000000000000000-mapping.dmp
          • memory/1120-60-0x0000000000000000-mapping.dmp
          • memory/1508-57-0x0000000000000000-mapping.dmp
          • memory/1628-61-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1628-54-0x00000000754C1000-0x00000000754C3000-memory.dmp
            Filesize

            8KB

          • memory/1628-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1692-80-0x0000000000000000-mapping.dmp
          • memory/1740-87-0x0000000000000000-mapping.dmp
          • memory/1772-76-0x0000000000000000-mapping.dmp
          • memory/1972-62-0x0000000000000000-mapping.dmp
          • memory/2028-64-0x0000000000000000-mapping.dmp