Analysis

  • max time kernel
    172s
  • max time network
    199s
  • 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 10:55

General

  • Target

    83000da22b715f1278d9fad1b8bcdc529ab49d36a1ff49678f143ec68e044e59.exe

  • Size

    445KB

  • MD5

    e51801717048b502fa213fee3a73cb84

  • SHA1

    21a0d0d591238b0fac03d7bc45ac35609e102b69

  • SHA256

    83000da22b715f1278d9fad1b8bcdc529ab49d36a1ff49678f143ec68e044e59

  • SHA512

    2780351054d7ac9e96eac76be604a84d27cbb30f8df62b94736919ecfa6b00abc5e1b4d9d8a374a2fdccfeefa3e540fed17d124e58f7c95cba9219b47d8b3bd9

  • SSDEEP

    6144:XzftF6bSb+w6tRj4aVrYvmXVeV/AJJVz7+EXex/oosO7eagpAUzGcqx3TG38dmFN:BUWbmtxVrYvml1JVXIgpURw84FN

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\83000da22b715f1278d9fad1b8bcdc529ab49d36a1ff49678f143ec68e044e59.exe
    "C:\Users\Admin\AppData\Local\Temp\83000da22b715f1278d9fad1b8bcdc529ab49d36a1ff49678f143ec68e044e59.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:1652
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4232
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3476
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3796
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3972
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1892
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4092
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1920
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:928
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4948
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3712
          • 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:2060
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4632

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsi4141.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c51da32e0cf7c7fb3d61e65cda16454

            SHA1

            7be78d37b9e69064bb54faac889c21fff37aa929

            SHA256

            c27cf476a631ec9063cd2e31eae4bbbd15428d521672e6bccb36912c1f6e6429

            SHA512

            d88a7812b513b044620634405a57e8e06d3a9a0f536211a3ef39e4b4e9c0b93a692df3d3973786be72ce52389141afc8f5e455e42c12ba8d5cd13190e45e9807

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c51da32e0cf7c7fb3d61e65cda16454

            SHA1

            7be78d37b9e69064bb54faac889c21fff37aa929

            SHA256

            c27cf476a631ec9063cd2e31eae4bbbd15428d521672e6bccb36912c1f6e6429

            SHA512

            d88a7812b513b044620634405a57e8e06d3a9a0f536211a3ef39e4b4e9c0b93a692df3d3973786be72ce52389141afc8f5e455e42c12ba8d5cd13190e45e9807

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c51da32e0cf7c7fb3d61e65cda16454

            SHA1

            7be78d37b9e69064bb54faac889c21fff37aa929

            SHA256

            c27cf476a631ec9063cd2e31eae4bbbd15428d521672e6bccb36912c1f6e6429

            SHA512

            d88a7812b513b044620634405a57e8e06d3a9a0f536211a3ef39e4b4e9c0b93a692df3d3973786be72ce52389141afc8f5e455e42c12ba8d5cd13190e45e9807

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8c51da32e0cf7c7fb3d61e65cda16454

            SHA1

            7be78d37b9e69064bb54faac889c21fff37aa929

            SHA256

            c27cf476a631ec9063cd2e31eae4bbbd15428d521672e6bccb36912c1f6e6429

            SHA512

            d88a7812b513b044620634405a57e8e06d3a9a0f536211a3ef39e4b4e9c0b93a692df3d3973786be72ce52389141afc8f5e455e42c12ba8d5cd13190e45e9807

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            d2351c0a8aad7dac959fef2a1b1d0878

            SHA1

            6ff8076b58530e334a0439c1a122cfe5d93febb1

            SHA256

            a64193f6833e35684810421d1dc5e9bb69c0b347abbb76e10086ba44b065c5d8

            SHA512

            24f2769581e24dbb8221e6eacd0c3b6dea73972ac52078dc71b2eca80250327e5e54eb084035594ea56b30df861f795885392440be357d3304e978eb151df6f7

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            d2351c0a8aad7dac959fef2a1b1d0878

            SHA1

            6ff8076b58530e334a0439c1a122cfe5d93febb1

            SHA256

            a64193f6833e35684810421d1dc5e9bb69c0b347abbb76e10086ba44b065c5d8

            SHA512

            24f2769581e24dbb8221e6eacd0c3b6dea73972ac52078dc71b2eca80250327e5e54eb084035594ea56b30df861f795885392440be357d3304e978eb151df6f7

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            d2351c0a8aad7dac959fef2a1b1d0878

            SHA1

            6ff8076b58530e334a0439c1a122cfe5d93febb1

            SHA256

            a64193f6833e35684810421d1dc5e9bb69c0b347abbb76e10086ba44b065c5d8

            SHA512

            24f2769581e24dbb8221e6eacd0c3b6dea73972ac52078dc71b2eca80250327e5e54eb084035594ea56b30df861f795885392440be357d3304e978eb151df6f7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9fd9d261116b41ed32f576b0e4d309cc

            SHA1

            4b6db678766e80964fcc8062154cf88bcf371df2

            SHA256

            edf02ded35cab4cf1ec1a90c682d3dd3efaf7f467df3de947da9c476517653bc

            SHA512

            d1d931374c5ace7af63989f0caab998d1bf974ffadceff027341b237b9ebe0ac72416eb7df00fd7b4d11fd89b09ff7cbad93a4e64eea9c8bf37181cc420fd5a1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9fd9d261116b41ed32f576b0e4d309cc

            SHA1

            4b6db678766e80964fcc8062154cf88bcf371df2

            SHA256

            edf02ded35cab4cf1ec1a90c682d3dd3efaf7f467df3de947da9c476517653bc

            SHA512

            d1d931374c5ace7af63989f0caab998d1bf974ffadceff027341b237b9ebe0ac72416eb7df00fd7b4d11fd89b09ff7cbad93a4e64eea9c8bf37181cc420fd5a1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9461c89b0696d17dc0b44e8ce5930a1c

            SHA1

            4cff6947c89a6fe1e45703d0c5dc7dc3f7eb2127

            SHA256

            5c9abc2f134183ee1d8ed59f4996d32b7da90cc1ec8d27e291b413ca3ef4dc16

            SHA512

            a0bd9f6ae24c0a8b4c2de7d145ea0b08ed47ee985599a59e715398e55dc219057ae3c7ef42976613da5866b261e7dd9c0a9f317020db4a339ac0b0fc8794c4b6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9461c89b0696d17dc0b44e8ce5930a1c

            SHA1

            4cff6947c89a6fe1e45703d0c5dc7dc3f7eb2127

            SHA256

            5c9abc2f134183ee1d8ed59f4996d32b7da90cc1ec8d27e291b413ca3ef4dc16

            SHA512

            a0bd9f6ae24c0a8b4c2de7d145ea0b08ed47ee985599a59e715398e55dc219057ae3c7ef42976613da5866b261e7dd9c0a9f317020db4a339ac0b0fc8794c4b6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9461c89b0696d17dc0b44e8ce5930a1c

            SHA1

            4cff6947c89a6fe1e45703d0c5dc7dc3f7eb2127

            SHA256

            5c9abc2f134183ee1d8ed59f4996d32b7da90cc1ec8d27e291b413ca3ef4dc16

            SHA512

            a0bd9f6ae24c0a8b4c2de7d145ea0b08ed47ee985599a59e715398e55dc219057ae3c7ef42976613da5866b261e7dd9c0a9f317020db4a339ac0b0fc8794c4b6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            70c7174f425edf4e63070438a04b301b

            SHA1

            3257b3e10b2add66db4c6207cff25eb261c7da4f

            SHA256

            f385eb19f0dcc5980272051dd0c12c23e709dd1e1d82ef82ce394b727cbcb5b4

            SHA512

            9e92db8cc998c90208a9fd13af8405bba05c1312ca2a65f586987e96b168f6a2962d1f49dea939c75188195dbe7122bdc2c7d4ea937d3dfbcb73b36e33b94e18

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            70c7174f425edf4e63070438a04b301b

            SHA1

            3257b3e10b2add66db4c6207cff25eb261c7da4f

            SHA256

            f385eb19f0dcc5980272051dd0c12c23e709dd1e1d82ef82ce394b727cbcb5b4

            SHA512

            9e92db8cc998c90208a9fd13af8405bba05c1312ca2a65f586987e96b168f6a2962d1f49dea939c75188195dbe7122bdc2c7d4ea937d3dfbcb73b36e33b94e18

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            70c7174f425edf4e63070438a04b301b

            SHA1

            3257b3e10b2add66db4c6207cff25eb261c7da4f

            SHA256

            f385eb19f0dcc5980272051dd0c12c23e709dd1e1d82ef82ce394b727cbcb5b4

            SHA512

            9e92db8cc998c90208a9fd13af8405bba05c1312ca2a65f586987e96b168f6a2962d1f49dea939c75188195dbe7122bdc2c7d4ea937d3dfbcb73b36e33b94e18

          • memory/928-158-0x0000000000000000-mapping.dmp

          • memory/1752-135-0x0000000000000000-mapping.dmp

          • memory/1892-146-0x0000000000000000-mapping.dmp

          • memory/1920-157-0x0000000000000000-mapping.dmp

          • memory/3476-139-0x0000000000000000-mapping.dmp

          • memory/3712-165-0x0000000000000000-mapping.dmp

          • memory/3796-140-0x0000000000000000-mapping.dmp

          • memory/3972-141-0x0000000000000000-mapping.dmp

          • memory/4092-152-0x0000000000000000-mapping.dmp

          • memory/4232-136-0x0000000000000000-mapping.dmp

          • memory/4948-164-0x0000000000000000-mapping.dmp