Analysis

  • max time kernel
    90s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:54

General

  • Target

    8942cd0838266f42eefe36dafc2adfc92128f977b989f529f1d0f308940d0e12.exe

  • Size

    445KB

  • MD5

    726c8695d618826538d73ba0c5852694

  • SHA1

    f9850992a252bb48e06286b7d9054146199cee0d

  • SHA256

    8942cd0838266f42eefe36dafc2adfc92128f977b989f529f1d0f308940d0e12

  • SHA512

    3ab422c7cbf963e5dc022b94b56d4bb2aedd9fe59142ca2c140fb1d8be61a664cdfb2fc73c6eab13b602b02da1b6a32995ca6b42dab9e7af51ba537c72550adc

  • SSDEEP

    12288:CKcYJ/8GUwvJuMlKJROxx0Y/aRDNmILT2+eP:CYfAbOv/GD0Im+E

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\8942cd0838266f42eefe36dafc2adfc92128f977b989f529f1d0f308940d0e12.exe
    "C:\Users\Admin\AppData\Local\Temp\8942cd0838266f42eefe36dafc2adfc92128f977b989f529f1d0f308940d0e12.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:2308
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5044
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:5000
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1064
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:948
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4772
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1300
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2924
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2504
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4260
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3880
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2184
          • 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:216
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4704

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            04e7dbdf604a6960ad2899680dfd07f5

            SHA1

            4e2b1a98478b11d3b11edb354b5658e1b81ce52e

            SHA256

            be3f75137bb71746272edf59386446e62e02cc0213b488c85531571456a8d5fe

            SHA512

            c15790388fe7414876c386e7bc86517703a0703fad6f53c187b713e3349dc198f1d17cd8afde07bde32d95e9f530f455148984acfbf7d488b08b5bc2e1027c4d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            04e7dbdf604a6960ad2899680dfd07f5

            SHA1

            4e2b1a98478b11d3b11edb354b5658e1b81ce52e

            SHA256

            be3f75137bb71746272edf59386446e62e02cc0213b488c85531571456a8d5fe

            SHA512

            c15790388fe7414876c386e7bc86517703a0703fad6f53c187b713e3349dc198f1d17cd8afde07bde32d95e9f530f455148984acfbf7d488b08b5bc2e1027c4d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            04e7dbdf604a6960ad2899680dfd07f5

            SHA1

            4e2b1a98478b11d3b11edb354b5658e1b81ce52e

            SHA256

            be3f75137bb71746272edf59386446e62e02cc0213b488c85531571456a8d5fe

            SHA512

            c15790388fe7414876c386e7bc86517703a0703fad6f53c187b713e3349dc198f1d17cd8afde07bde32d95e9f530f455148984acfbf7d488b08b5bc2e1027c4d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            04e7dbdf604a6960ad2899680dfd07f5

            SHA1

            4e2b1a98478b11d3b11edb354b5658e1b81ce52e

            SHA256

            be3f75137bb71746272edf59386446e62e02cc0213b488c85531571456a8d5fe

            SHA512

            c15790388fe7414876c386e7bc86517703a0703fad6f53c187b713e3349dc198f1d17cd8afde07bde32d95e9f530f455148984acfbf7d488b08b5bc2e1027c4d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c04828a4a439bfcc07c9ef0bc8583e12

            SHA1

            2a2915fad4f28c0726a592e752b536c8619d4e73

            SHA256

            88fb4c40efd7bf4337866f798ec439c78254875ea41634d2a9f82c506b54ad86

            SHA512

            5d924f26de761d14d484c5c7ef7ae440b81cc3044602ee7181a2eeecc0d632d45d50902bcc28b72bdafd5ad0d714730c8d3f11a78920f6cb256933ad71e30282

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c04828a4a439bfcc07c9ef0bc8583e12

            SHA1

            2a2915fad4f28c0726a592e752b536c8619d4e73

            SHA256

            88fb4c40efd7bf4337866f798ec439c78254875ea41634d2a9f82c506b54ad86

            SHA512

            5d924f26de761d14d484c5c7ef7ae440b81cc3044602ee7181a2eeecc0d632d45d50902bcc28b72bdafd5ad0d714730c8d3f11a78920f6cb256933ad71e30282

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            c04828a4a439bfcc07c9ef0bc8583e12

            SHA1

            2a2915fad4f28c0726a592e752b536c8619d4e73

            SHA256

            88fb4c40efd7bf4337866f798ec439c78254875ea41634d2a9f82c506b54ad86

            SHA512

            5d924f26de761d14d484c5c7ef7ae440b81cc3044602ee7181a2eeecc0d632d45d50902bcc28b72bdafd5ad0d714730c8d3f11a78920f6cb256933ad71e30282

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fcfdc062a200ebcb18a1fcc38dd7923e

            SHA1

            cf8fb2d552aa7fd6417bb3814347b4d650974864

            SHA256

            229f1d4cdcf71cb1fb00916df92a897df4a8391ad390ecd4715eebf7f926f915

            SHA512

            7c7d3f53fe963d70b827610faccbbab0402064612f866c18d18d3a7aeb7bb50029a5f5df7ff59cb01c76ab089adbaca48e23c08f21ac9ea867f1abbdcfc76beb

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fcfdc062a200ebcb18a1fcc38dd7923e

            SHA1

            cf8fb2d552aa7fd6417bb3814347b4d650974864

            SHA256

            229f1d4cdcf71cb1fb00916df92a897df4a8391ad390ecd4715eebf7f926f915

            SHA512

            7c7d3f53fe963d70b827610faccbbab0402064612f866c18d18d3a7aeb7bb50029a5f5df7ff59cb01c76ab089adbaca48e23c08f21ac9ea867f1abbdcfc76beb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a51307e3650861cac02035dcdc83cca0

            SHA1

            b73ad159e6bf804ecbf93801ab0b27396f8b6081

            SHA256

            610630f35bd993328880701aa0daf216867d48630414c223d1610776ccff3590

            SHA512

            79cf9cf834b643a2673a75f207b5e1ba914da2b725ec881a5815d7205dece39b3e2147993627ed48c1a9da0cb8a390e125c0edf074167894576fa819f03c4232

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a51307e3650861cac02035dcdc83cca0

            SHA1

            b73ad159e6bf804ecbf93801ab0b27396f8b6081

            SHA256

            610630f35bd993328880701aa0daf216867d48630414c223d1610776ccff3590

            SHA512

            79cf9cf834b643a2673a75f207b5e1ba914da2b725ec881a5815d7205dece39b3e2147993627ed48c1a9da0cb8a390e125c0edf074167894576fa819f03c4232

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a51307e3650861cac02035dcdc83cca0

            SHA1

            b73ad159e6bf804ecbf93801ab0b27396f8b6081

            SHA256

            610630f35bd993328880701aa0daf216867d48630414c223d1610776ccff3590

            SHA512

            79cf9cf834b643a2673a75f207b5e1ba914da2b725ec881a5815d7205dece39b3e2147993627ed48c1a9da0cb8a390e125c0edf074167894576fa819f03c4232

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            17630e45d608b8ddd8dbdc5950ed9171

            SHA1

            b66e9889cb133bb46216d8e1576820f0839ead4f

            SHA256

            9d5b0b735fa238204fbce2d3d17af12f8daa89134d379ae8cc515b78a0e98bdb

            SHA512

            5a66996de96024b69f2ded38abf80dc6434645adcbeb70273c24c65c585a9a858a26d4f777aeae596990df99eafd4b619785e6116ec4f706bd2d51d1cbaa80b4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            17630e45d608b8ddd8dbdc5950ed9171

            SHA1

            b66e9889cb133bb46216d8e1576820f0839ead4f

            SHA256

            9d5b0b735fa238204fbce2d3d17af12f8daa89134d379ae8cc515b78a0e98bdb

            SHA512

            5a66996de96024b69f2ded38abf80dc6434645adcbeb70273c24c65c585a9a858a26d4f777aeae596990df99eafd4b619785e6116ec4f706bd2d51d1cbaa80b4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            17630e45d608b8ddd8dbdc5950ed9171

            SHA1

            b66e9889cb133bb46216d8e1576820f0839ead4f

            SHA256

            9d5b0b735fa238204fbce2d3d17af12f8daa89134d379ae8cc515b78a0e98bdb

            SHA512

            5a66996de96024b69f2ded38abf80dc6434645adcbeb70273c24c65c585a9a858a26d4f777aeae596990df99eafd4b619785e6116ec4f706bd2d51d1cbaa80b4

          • memory/948-140-0x0000000000000000-mapping.dmp

          • memory/1064-139-0x0000000000000000-mapping.dmp

          • memory/1300-146-0x0000000000000000-mapping.dmp

          • memory/2184-165-0x0000000000000000-mapping.dmp

          • memory/2504-157-0x0000000000000000-mapping.dmp

          • memory/2924-152-0x0000000000000000-mapping.dmp

          • memory/3880-164-0x0000000000000000-mapping.dmp

          • memory/4260-158-0x0000000000000000-mapping.dmp

          • memory/4772-141-0x0000000000000000-mapping.dmp

          • memory/5000-136-0x0000000000000000-mapping.dmp

          • memory/5044-135-0x0000000000000000-mapping.dmp