Analysis

  • max time kernel
    151s
  • max time network
    191s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    fc879d5f6d0802bcc224dcb0e7575b171340ee7a767a7406cf8aa6818eae3700.exe

  • Size

    603KB

  • MD5

    ba4f8267edbbec5b98f1b8dc537a4a49

  • SHA1

    b3a4f6b04be26ab1f0c0a71d6ea22531f5d13ab8

  • SHA256

    fc879d5f6d0802bcc224dcb0e7575b171340ee7a767a7406cf8aa6818eae3700

  • SHA512

    b5426e595a70f84492a80a466abc864f69f2302fd9e9ab8c2b940af585813b634100ff93636723e4001c3690dc74296d8743a646e8d7d3e617ee428070bdd40e

  • SSDEEP

    12288:aIny5DYTfIWfC4Mb0I/FDQG6AFSIS0mmPq57PG7BcIMNIBSb:8UTfBfZ+0I/TFS6mme7t/NIkb

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fc879d5f6d0802bcc224dcb0e7575b171340ee7a767a7406cf8aa6818eae3700.exe
    "C:\Users\Admin\AppData\Local\Temp\fc879d5f6d0802bcc224dcb0e7575b171340ee7a767a7406cf8aa6818eae3700.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:3396
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:540
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2192
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3200
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3564
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5084
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3172
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4880
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3952
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4712
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4460
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3756
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:704
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3484

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx11B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6e3baab94da5fbac3cf41d392a28048

            SHA1

            40ce0db7a4ffeec58395cf4e2c85840b9b5eaa4f

            SHA256

            cdb2da8c45780bbdf18d4e5b448b7cd18204697cf7b558ed89f4611f7a7a6532

            SHA512

            94797a414e9c96f573d53f22315ab10e37852cd9919e7b3836052a13f0758a05a1951d22d51054070a2da6003b2397d885e4a2eb577b80aed6b3eb6806bfff30

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6e3baab94da5fbac3cf41d392a28048

            SHA1

            40ce0db7a4ffeec58395cf4e2c85840b9b5eaa4f

            SHA256

            cdb2da8c45780bbdf18d4e5b448b7cd18204697cf7b558ed89f4611f7a7a6532

            SHA512

            94797a414e9c96f573d53f22315ab10e37852cd9919e7b3836052a13f0758a05a1951d22d51054070a2da6003b2397d885e4a2eb577b80aed6b3eb6806bfff30

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6e3baab94da5fbac3cf41d392a28048

            SHA1

            40ce0db7a4ffeec58395cf4e2c85840b9b5eaa4f

            SHA256

            cdb2da8c45780bbdf18d4e5b448b7cd18204697cf7b558ed89f4611f7a7a6532

            SHA512

            94797a414e9c96f573d53f22315ab10e37852cd9919e7b3836052a13f0758a05a1951d22d51054070a2da6003b2397d885e4a2eb577b80aed6b3eb6806bfff30

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6e3baab94da5fbac3cf41d392a28048

            SHA1

            40ce0db7a4ffeec58395cf4e2c85840b9b5eaa4f

            SHA256

            cdb2da8c45780bbdf18d4e5b448b7cd18204697cf7b558ed89f4611f7a7a6532

            SHA512

            94797a414e9c96f573d53f22315ab10e37852cd9919e7b3836052a13f0758a05a1951d22d51054070a2da6003b2397d885e4a2eb577b80aed6b3eb6806bfff30

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            b3b809a2e91b22f76231691df381f5c6

            SHA1

            55c9b0a7346ec233094a3a22988d2251820b834c

            SHA256

            90b698ee63b441eec1844cf0086de99733d27675eecaa0695eb24fc7e4b49e49

            SHA512

            f0911a41ff81ed0713d764a89b192d034fed717f679f4dd8b46b0e0674369953ea886e652502afed06dfb8ba06fd8aeb968bc1c97da31aafd696e5e3cf7edcf0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            b3b809a2e91b22f76231691df381f5c6

            SHA1

            55c9b0a7346ec233094a3a22988d2251820b834c

            SHA256

            90b698ee63b441eec1844cf0086de99733d27675eecaa0695eb24fc7e4b49e49

            SHA512

            f0911a41ff81ed0713d764a89b192d034fed717f679f4dd8b46b0e0674369953ea886e652502afed06dfb8ba06fd8aeb968bc1c97da31aafd696e5e3cf7edcf0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            b3b809a2e91b22f76231691df381f5c6

            SHA1

            55c9b0a7346ec233094a3a22988d2251820b834c

            SHA256

            90b698ee63b441eec1844cf0086de99733d27675eecaa0695eb24fc7e4b49e49

            SHA512

            f0911a41ff81ed0713d764a89b192d034fed717f679f4dd8b46b0e0674369953ea886e652502afed06dfb8ba06fd8aeb968bc1c97da31aafd696e5e3cf7edcf0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f3f13eff3cc7a58f68f807846045e3a2

            SHA1

            7e614caa3997c9fc8a49d620f29c0967a840d6e9

            SHA256

            79effe5cadfac560cf2464c034acb9883f0c9a8bc7c26155f662fddc9a8e88db

            SHA512

            853d061c1e5add8a43db63c42245651d7da6e6a1323b5a8208e6fd22dec940fc070ade5099e827efacb45d538193f68c121fd2a7c1062c6cce46a15102b957da

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f3f13eff3cc7a58f68f807846045e3a2

            SHA1

            7e614caa3997c9fc8a49d620f29c0967a840d6e9

            SHA256

            79effe5cadfac560cf2464c034acb9883f0c9a8bc7c26155f662fddc9a8e88db

            SHA512

            853d061c1e5add8a43db63c42245651d7da6e6a1323b5a8208e6fd22dec940fc070ade5099e827efacb45d538193f68c121fd2a7c1062c6cce46a15102b957da

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e513baa8bed768d09b95bad8a4f7768d

            SHA1

            e0b8d67c7d2b78351b987829b794229c701c2014

            SHA256

            fc0b4ae26a5e4995e1d444622f91d15f3b268b7024de5f774160f4254b1191b4

            SHA512

            abd38c0b5575c80cb1d3175d34c69a6d6669db326381125947da83be6db247857f6c81cfa79cee5f9e8aa3f6cd5b2aa41ce5c7a3a029ff349c9764863238e9b1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e513baa8bed768d09b95bad8a4f7768d

            SHA1

            e0b8d67c7d2b78351b987829b794229c701c2014

            SHA256

            fc0b4ae26a5e4995e1d444622f91d15f3b268b7024de5f774160f4254b1191b4

            SHA512

            abd38c0b5575c80cb1d3175d34c69a6d6669db326381125947da83be6db247857f6c81cfa79cee5f9e8aa3f6cd5b2aa41ce5c7a3a029ff349c9764863238e9b1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e513baa8bed768d09b95bad8a4f7768d

            SHA1

            e0b8d67c7d2b78351b987829b794229c701c2014

            SHA256

            fc0b4ae26a5e4995e1d444622f91d15f3b268b7024de5f774160f4254b1191b4

            SHA512

            abd38c0b5575c80cb1d3175d34c69a6d6669db326381125947da83be6db247857f6c81cfa79cee5f9e8aa3f6cd5b2aa41ce5c7a3a029ff349c9764863238e9b1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            73e2642b285f28696206a296a2d4deec

            SHA1

            592497bfee9106f98d88245de6dbdb4254e15188

            SHA256

            3aaf774c37b9d948cf7570e2e00604b6aaef3500faa00741b0c2b7360a1ae404

            SHA512

            0900e67c10597f33e686e7264cc30220cc8236bfede439dfb86cbe1c4a9c5f8f11556d0c2f2d1fbd5e32ae4d79bace34a539647b7ca0944da1d16e2e760e2b39

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            73e2642b285f28696206a296a2d4deec

            SHA1

            592497bfee9106f98d88245de6dbdb4254e15188

            SHA256

            3aaf774c37b9d948cf7570e2e00604b6aaef3500faa00741b0c2b7360a1ae404

            SHA512

            0900e67c10597f33e686e7264cc30220cc8236bfede439dfb86cbe1c4a9c5f8f11556d0c2f2d1fbd5e32ae4d79bace34a539647b7ca0944da1d16e2e760e2b39

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            73e2642b285f28696206a296a2d4deec

            SHA1

            592497bfee9106f98d88245de6dbdb4254e15188

            SHA256

            3aaf774c37b9d948cf7570e2e00604b6aaef3500faa00741b0c2b7360a1ae404

            SHA512

            0900e67c10597f33e686e7264cc30220cc8236bfede439dfb86cbe1c4a9c5f8f11556d0c2f2d1fbd5e32ae4d79bace34a539647b7ca0944da1d16e2e760e2b39

          • memory/540-136-0x0000000000000000-mapping.dmp

          • memory/2192-137-0x0000000000000000-mapping.dmp

          • memory/3172-148-0x0000000000000000-mapping.dmp

          • memory/3200-141-0x0000000000000000-mapping.dmp

          • memory/3396-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3396-138-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3396-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3564-142-0x0000000000000000-mapping.dmp

          • memory/3756-167-0x0000000000000000-mapping.dmp

          • memory/3952-159-0x0000000000000000-mapping.dmp

          • memory/4460-166-0x0000000000000000-mapping.dmp

          • memory/4712-160-0x0000000000000000-mapping.dmp

          • memory/4880-154-0x0000000000000000-mapping.dmp

          • memory/5084-143-0x0000000000000000-mapping.dmp