Analysis

  • max time kernel
    43s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:32

General

  • Target

    1945e2ea6a5e746ff6edbc71c2e258418be832dbfbdd4d27faf3f74bfd3430d1.exe

  • Size

    603KB

  • MD5

    6e1fe764ccf7c1f5911737b293f31c4d

  • SHA1

    28b9092eb95b09f3fe011e68d9cbf31e9dbf3627

  • SHA256

    1945e2ea6a5e746ff6edbc71c2e258418be832dbfbdd4d27faf3f74bfd3430d1

  • SHA512

    a1ba03dd2ee287b9a71aa7c99bfd3a73e6b66c16e24537979af4c2c347697b448da024c19c18b90ded4a9ff4f09059022d41af3fb6bcc60bedf6b38d12cf2acd

  • SSDEEP

    12288:bIny5DYTmIRS/92BBb8xIldSkT/OvmDWDgtDThYOFZB:jUTm2S/924xm3lWMtPZB

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\1945e2ea6a5e746ff6edbc71c2e258418be832dbfbdd4d27faf3f74bfd3430d1.exe
    "C:\Users\Admin\AppData\Local\Temp\1945e2ea6a5e746ff6edbc71c2e258418be832dbfbdd4d27faf3f74bfd3430d1.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:1720
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:804
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1764
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1376
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:240
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:616
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:764
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1348
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1676
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:972
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1288
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1108
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2028
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2040

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a334ed2ea2a2373921a4e8ecb942ef1

            SHA1

            821491c1085419ee73403b0ceedf1a10edf08aeb

            SHA256

            fda8d33610edb4ffb0f75415331fba519ce8351fc6a1b4772a5b6448a9686502

            SHA512

            9652fe04c05ce8c8a0e480aae235c491e645d05a06d7b6fa47060551d94082c50bb8f57f35f795c7a9a9407877792644b450a3f1e44142abf4f1bba65547bd0c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2c618210047280acec982f9893866933

            SHA1

            490f5ec4ada112d216a25aad9c4b10c3c82817e0

            SHA256

            e67fcc0a28dea9872e9ab241b3c1fc53922302284086070fd894705bbe294173

            SHA512

            4c89457a066d130211c9835062489a1d1d85e7787dd8b5e942619b92549e720ec4bc4f1ab5634a1985d8148b1e3caf57c91b39a1d97d12e0119af16c007374c9

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            81e440c3c0470af25ea148c4facabf38

            SHA1

            9114a02a523db2f4245b69217ed9f00869179242

            SHA256

            505057b1884735224f78ace61afb3d973e961de4f226cd7fdbd4b2c172e02b97

            SHA512

            8a0f62618bb7dbf08f7af1abc416f4cc527ccba2843553fef497e049a58be71bf057d4f4372c6a4f13014907a3dd5b7d1bed41938544538e8d03d2ed9da8da3a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a58898f133dbf46058c1590932c2d00a

            SHA1

            ee705e5b65c0f77fda245a7cc317044870c14461

            SHA256

            10fa871f0a427c9c52b1ed68b0a61b37807d70e1293ebbd845e9124424b47c0e

            SHA512

            2e5a216549d6947d6cb4031187c5efba4be515cd75aa34eab1401cadedaa88f8e255225eb3f3d414b9fa5a16f3c8b47c36c0b6f5ae5163b8522c5e8105efd640

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a58898f133dbf46058c1590932c2d00a

            SHA1

            ee705e5b65c0f77fda245a7cc317044870c14461

            SHA256

            10fa871f0a427c9c52b1ed68b0a61b37807d70e1293ebbd845e9124424b47c0e

            SHA512

            2e5a216549d6947d6cb4031187c5efba4be515cd75aa34eab1401cadedaa88f8e255225eb3f3d414b9fa5a16f3c8b47c36c0b6f5ae5163b8522c5e8105efd640

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a88d8a1bca75962a307978a6b39684e5

            SHA1

            3de20eb2a570f41aa482e1ffa6680b4c67421081

            SHA256

            09109f7b2dfee996fbcebbfd1401168e65e417503cfce79fcefe7026ced448af

            SHA512

            f2f3c30bca4300c51e223e3b8cecdb41842a74f576dbea4f6445dd47e78494737b18325ada8842ee3b009b6af3b7fb2643b31e9698a18a0ef7877929530899c2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a88d8a1bca75962a307978a6b39684e5

            SHA1

            3de20eb2a570f41aa482e1ffa6680b4c67421081

            SHA256

            09109f7b2dfee996fbcebbfd1401168e65e417503cfce79fcefe7026ced448af

            SHA512

            f2f3c30bca4300c51e223e3b8cecdb41842a74f576dbea4f6445dd47e78494737b18325ada8842ee3b009b6af3b7fb2643b31e9698a18a0ef7877929530899c2

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2407.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a334ed2ea2a2373921a4e8ecb942ef1

            SHA1

            821491c1085419ee73403b0ceedf1a10edf08aeb

            SHA256

            fda8d33610edb4ffb0f75415331fba519ce8351fc6a1b4772a5b6448a9686502

            SHA512

            9652fe04c05ce8c8a0e480aae235c491e645d05a06d7b6fa47060551d94082c50bb8f57f35f795c7a9a9407877792644b450a3f1e44142abf4f1bba65547bd0c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a334ed2ea2a2373921a4e8ecb942ef1

            SHA1

            821491c1085419ee73403b0ceedf1a10edf08aeb

            SHA256

            fda8d33610edb4ffb0f75415331fba519ce8351fc6a1b4772a5b6448a9686502

            SHA512

            9652fe04c05ce8c8a0e480aae235c491e645d05a06d7b6fa47060551d94082c50bb8f57f35f795c7a9a9407877792644b450a3f1e44142abf4f1bba65547bd0c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a334ed2ea2a2373921a4e8ecb942ef1

            SHA1

            821491c1085419ee73403b0ceedf1a10edf08aeb

            SHA256

            fda8d33610edb4ffb0f75415331fba519ce8351fc6a1b4772a5b6448a9686502

            SHA512

            9652fe04c05ce8c8a0e480aae235c491e645d05a06d7b6fa47060551d94082c50bb8f57f35f795c7a9a9407877792644b450a3f1e44142abf4f1bba65547bd0c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2c618210047280acec982f9893866933

            SHA1

            490f5ec4ada112d216a25aad9c4b10c3c82817e0

            SHA256

            e67fcc0a28dea9872e9ab241b3c1fc53922302284086070fd894705bbe294173

            SHA512

            4c89457a066d130211c9835062489a1d1d85e7787dd8b5e942619b92549e720ec4bc4f1ab5634a1985d8148b1e3caf57c91b39a1d97d12e0119af16c007374c9

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2c618210047280acec982f9893866933

            SHA1

            490f5ec4ada112d216a25aad9c4b10c3c82817e0

            SHA256

            e67fcc0a28dea9872e9ab241b3c1fc53922302284086070fd894705bbe294173

            SHA512

            4c89457a066d130211c9835062489a1d1d85e7787dd8b5e942619b92549e720ec4bc4f1ab5634a1985d8148b1e3caf57c91b39a1d97d12e0119af16c007374c9

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            81e440c3c0470af25ea148c4facabf38

            SHA1

            9114a02a523db2f4245b69217ed9f00869179242

            SHA256

            505057b1884735224f78ace61afb3d973e961de4f226cd7fdbd4b2c172e02b97

            SHA512

            8a0f62618bb7dbf08f7af1abc416f4cc527ccba2843553fef497e049a58be71bf057d4f4372c6a4f13014907a3dd5b7d1bed41938544538e8d03d2ed9da8da3a

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a58898f133dbf46058c1590932c2d00a

            SHA1

            ee705e5b65c0f77fda245a7cc317044870c14461

            SHA256

            10fa871f0a427c9c52b1ed68b0a61b37807d70e1293ebbd845e9124424b47c0e

            SHA512

            2e5a216549d6947d6cb4031187c5efba4be515cd75aa34eab1401cadedaa88f8e255225eb3f3d414b9fa5a16f3c8b47c36c0b6f5ae5163b8522c5e8105efd640

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a88d8a1bca75962a307978a6b39684e5

            SHA1

            3de20eb2a570f41aa482e1ffa6680b4c67421081

            SHA256

            09109f7b2dfee996fbcebbfd1401168e65e417503cfce79fcefe7026ced448af

            SHA512

            f2f3c30bca4300c51e223e3b8cecdb41842a74f576dbea4f6445dd47e78494737b18325ada8842ee3b009b6af3b7fb2643b31e9698a18a0ef7877929530899c2

          • memory/240-62-0x0000000000000000-mapping.dmp

          • memory/616-64-0x0000000000000000-mapping.dmp

          • memory/764-70-0x0000000000000000-mapping.dmp

          • memory/804-58-0x0000000000000000-mapping.dmp

          • memory/972-81-0x0000000000000000-mapping.dmp

          • memory/1108-87-0x0000000000000000-mapping.dmp

          • memory/1288-86-0x0000000000000000-mapping.dmp

          • memory/1348-76-0x0000000000000000-mapping.dmp

          • memory/1376-61-0x0000000000000000-mapping.dmp

          • memory/1676-80-0x0000000000000000-mapping.dmp

          • memory/1720-54-0x00000000765B1000-0x00000000765B3000-memory.dmp

            Filesize

            8KB

          • memory/1720-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1720-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1764-59-0x0000000000000000-mapping.dmp