Analysis

  • max time kernel
    60s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f3ab5098130ca3caaac41ced53406141a6cef6445108a97a4def8b7a439c7807.exe

  • Size

    602KB

  • MD5

    bd6872d54c283a7f86a6dc4008faf92f

  • SHA1

    f1ce30edee279e7a7525ca7e121453f0992a2272

  • SHA256

    f3ab5098130ca3caaac41ced53406141a6cef6445108a97a4def8b7a439c7807

  • SHA512

    8c339587c2e6daedbe04df13e0fc61a2230716a4d4cdbe97b8323b7faab2dd7fd14de53eec70c1d5bfea8c99c176912411899b14054ca4d3894ada3b8e928b97

  • SSDEEP

    12288:KIny5DYTj3XMAXro6o8UBq3+nyi0ykxwR+VV:MUTj3XMAXrodA3nxxw0V

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\f3ab5098130ca3caaac41ced53406141a6cef6445108a97a4def8b7a439c7807.exe
    "C:\Users\Admin\AppData\Local\Temp\f3ab5098130ca3caaac41ced53406141a6cef6445108a97a4def8b7a439c7807.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:1336
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1060
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1340
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1164
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1032
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:872
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:952
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1472
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1932
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1732
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1384
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:608

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcd441919cabfc0402555e3583aa4f51

            SHA1

            b65f2fa53fd2dc70395d24a7f90a8eb3704f4c89

            SHA256

            5b88ba3e7cbff71e6eae0e4f7c8ab969ec3596361c878681fd6f20cbf325d5b8

            SHA512

            4c545b2dab663879d4b28084ee9ba1b6c78459b64515951f5040f5b6110431cb9f7771e3c9a2f4becc4f08823fed1313ffcd40348788434f687733817ac24a1c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e2876f433f4eb29fe1ccccc0b2e0dea2

            SHA1

            ab70c4b10d6df60dc8e54f40ccec00e2f04109bd

            SHA256

            4f0f719d01a0a23211a75b88ee444cfa19ef76d44f53c204adb16da4fe0903e1

            SHA512

            56e37a835a32d0b178ca446b19b348c7886ad2ead94ea07e17d16f91a8abd895338cea040552817839f7f29c7d6fc183abec59acad476e7a3e7136b387b2ade1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a652566a966bdc76721d19a6f4e131ee

            SHA1

            170cac8be5f1d136c9ad7cccd66d1673c8ae203b

            SHA256

            015711710bda25ff046ab72a435b01d9eba21a72bcc2b08ec246de5df0462c66

            SHA512

            da948904417ce051ea1e8d8bb0fc631c9a4e6a2999afccd50d78c5234b07b9ad29936eb1e9ac40d9f92b2b41b5853f1d17029f1eb8de4d669eb81a6072e1583d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9fed3066335431766658badaf1ced02c

            SHA1

            b20a119d111e2bde45ab3ebc47771a843d63a3b0

            SHA256

            b316cda037e62aa3d6ca3d04fc8223aac1622e2cef84aa78eb97182429c13bca

            SHA512

            75d66ac1c9db7429ca646c8ef775016f0f1326367899299b73718584774ad7c64d0d91986e7b70802b7174b05df728192a4ec90fd99b7dba38e767f29a136f9d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9fed3066335431766658badaf1ced02c

            SHA1

            b20a119d111e2bde45ab3ebc47771a843d63a3b0

            SHA256

            b316cda037e62aa3d6ca3d04fc8223aac1622e2cef84aa78eb97182429c13bca

            SHA512

            75d66ac1c9db7429ca646c8ef775016f0f1326367899299b73718584774ad7c64d0d91986e7b70802b7174b05df728192a4ec90fd99b7dba38e767f29a136f9d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            d8bdf9414ebb423b987ab2a3222b0a56

            SHA1

            b7ce16d0dc945152b16082af8384909947b253ea

            SHA256

            f1c92975dfe1635fd1a42194b57422661e03c0d5a15b9d55bbce8532f736e53b

            SHA512

            fac71ac97b0dede142c50c392c53f40a4a57ad95ca8cc6ed4fca6b8e54cf6123dd2d23b0f5304778f7b3d56b4e46dd4aeecc6078ed9339644dcdc006c3c91769

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            d8bdf9414ebb423b987ab2a3222b0a56

            SHA1

            b7ce16d0dc945152b16082af8384909947b253ea

            SHA256

            f1c92975dfe1635fd1a42194b57422661e03c0d5a15b9d55bbce8532f736e53b

            SHA512

            fac71ac97b0dede142c50c392c53f40a4a57ad95ca8cc6ed4fca6b8e54cf6123dd2d23b0f5304778f7b3d56b4e46dd4aeecc6078ed9339644dcdc006c3c91769

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcd441919cabfc0402555e3583aa4f51

            SHA1

            b65f2fa53fd2dc70395d24a7f90a8eb3704f4c89

            SHA256

            5b88ba3e7cbff71e6eae0e4f7c8ab969ec3596361c878681fd6f20cbf325d5b8

            SHA512

            4c545b2dab663879d4b28084ee9ba1b6c78459b64515951f5040f5b6110431cb9f7771e3c9a2f4becc4f08823fed1313ffcd40348788434f687733817ac24a1c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcd441919cabfc0402555e3583aa4f51

            SHA1

            b65f2fa53fd2dc70395d24a7f90a8eb3704f4c89

            SHA256

            5b88ba3e7cbff71e6eae0e4f7c8ab969ec3596361c878681fd6f20cbf325d5b8

            SHA512

            4c545b2dab663879d4b28084ee9ba1b6c78459b64515951f5040f5b6110431cb9f7771e3c9a2f4becc4f08823fed1313ffcd40348788434f687733817ac24a1c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bcd441919cabfc0402555e3583aa4f51

            SHA1

            b65f2fa53fd2dc70395d24a7f90a8eb3704f4c89

            SHA256

            5b88ba3e7cbff71e6eae0e4f7c8ab969ec3596361c878681fd6f20cbf325d5b8

            SHA512

            4c545b2dab663879d4b28084ee9ba1b6c78459b64515951f5040f5b6110431cb9f7771e3c9a2f4becc4f08823fed1313ffcd40348788434f687733817ac24a1c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e2876f433f4eb29fe1ccccc0b2e0dea2

            SHA1

            ab70c4b10d6df60dc8e54f40ccec00e2f04109bd

            SHA256

            4f0f719d01a0a23211a75b88ee444cfa19ef76d44f53c204adb16da4fe0903e1

            SHA512

            56e37a835a32d0b178ca446b19b348c7886ad2ead94ea07e17d16f91a8abd895338cea040552817839f7f29c7d6fc183abec59acad476e7a3e7136b387b2ade1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e2876f433f4eb29fe1ccccc0b2e0dea2

            SHA1

            ab70c4b10d6df60dc8e54f40ccec00e2f04109bd

            SHA256

            4f0f719d01a0a23211a75b88ee444cfa19ef76d44f53c204adb16da4fe0903e1

            SHA512

            56e37a835a32d0b178ca446b19b348c7886ad2ead94ea07e17d16f91a8abd895338cea040552817839f7f29c7d6fc183abec59acad476e7a3e7136b387b2ade1

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a652566a966bdc76721d19a6f4e131ee

            SHA1

            170cac8be5f1d136c9ad7cccd66d1673c8ae203b

            SHA256

            015711710bda25ff046ab72a435b01d9eba21a72bcc2b08ec246de5df0462c66

            SHA512

            da948904417ce051ea1e8d8bb0fc631c9a4e6a2999afccd50d78c5234b07b9ad29936eb1e9ac40d9f92b2b41b5853f1d17029f1eb8de4d669eb81a6072e1583d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9fed3066335431766658badaf1ced02c

            SHA1

            b20a119d111e2bde45ab3ebc47771a843d63a3b0

            SHA256

            b316cda037e62aa3d6ca3d04fc8223aac1622e2cef84aa78eb97182429c13bca

            SHA512

            75d66ac1c9db7429ca646c8ef775016f0f1326367899299b73718584774ad7c64d0d91986e7b70802b7174b05df728192a4ec90fd99b7dba38e767f29a136f9d

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            d8bdf9414ebb423b987ab2a3222b0a56

            SHA1

            b7ce16d0dc945152b16082af8384909947b253ea

            SHA256

            f1c92975dfe1635fd1a42194b57422661e03c0d5a15b9d55bbce8532f736e53b

            SHA512

            fac71ac97b0dede142c50c392c53f40a4a57ad95ca8cc6ed4fca6b8e54cf6123dd2d23b0f5304778f7b3d56b4e46dd4aeecc6078ed9339644dcdc006c3c91769

          • memory/584-60-0x0000000000000000-mapping.dmp

          • memory/872-77-0x0000000000000000-mapping.dmp

          • memory/952-81-0x0000000000000000-mapping.dmp

          • memory/1032-71-0x0000000000000000-mapping.dmp

          • memory/1060-58-0x0000000000000000-mapping.dmp

          • memory/1164-64-0x0000000000000000-mapping.dmp

          • memory/1336-54-0x00000000760B1000-0x00000000760B3000-memory.dmp

            Filesize

            8KB

          • memory/1336-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1336-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1336-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1340-61-0x0000000000000000-mapping.dmp

          • memory/1472-82-0x0000000000000000-mapping.dmp

          • memory/1732-88-0x0000000000000000-mapping.dmp

          • memory/1932-87-0x0000000000000000-mapping.dmp

          • memory/1992-57-0x0000000000000000-mapping.dmp