Analysis

  • max time kernel
    43s
  • max time network
    47s
  • 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

    1a5f854f9d6fe3543c633191c80c690d7b725ce720d631db9380536bf3f00eff.exe

  • Size

    603KB

  • MD5

    43aa7793765552e77b75804c9f33b20b

  • SHA1

    c2d63982137adcd289270907674dc7733641c960

  • SHA256

    1a5f854f9d6fe3543c633191c80c690d7b725ce720d631db9380536bf3f00eff

  • SHA512

    579ccd6a1aae72013ca8dbea22f0811c0891c98f4b416d193d718d29bae98f7d6c822b7641fa2fc2e867931a208de64d71b6c3c4f4a2b59358179100b93175ba

  • SSDEEP

    12288:5Iny5DYTmIRawvRHnQSgBxlXe6kvM8Gjh3t2SopMsIPSvsICoI6LpPO:1UTmyawvRHnQpxXPk08G7Y5RsICoIApm

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\1a5f854f9d6fe3543c633191c80c690d7b725ce720d631db9380536bf3f00eff.exe
    "C:\Users\Admin\AppData\Local\Temp\1a5f854f9d6fe3543c633191c80c690d7b725ce720d631db9380536bf3f00eff.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:1284
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:840
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1668
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1148
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1108
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:572
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1680
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:916
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2016
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1968
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:528
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1776
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1984
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1944

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f009d007b668ea1f626e26ee4b86fd56

            SHA1

            6c8572d88ff3b8aaaa6471473ad768272176f868

            SHA256

            030bf227495cb0669910f38e49f242fd2b86c08eb05b297aa0568961ab158809

            SHA512

            0e7e307d05015bc401e4adcde5ecef33f2b37b705116c2fa12501f942b2f9c769d6598e3390411ced02ea073d078e1a1638635e10e28437783cba4b9f2bddcd9

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            97229141c168654ed50ee5c12e60a2f5

            SHA1

            6344cd5afb507fc901b81068d3878e0a7c98a4ee

            SHA256

            180c8dec2991e7cec163988fe06ec2953a7dfc5ac8423602756c176fb8dae0ed

            SHA512

            fd0a6962dc7a1e6c637320ca7d302fccde7b41302b9cc1fce861d927ace7075aa7bde7f58b9bd793f7888a6158482627b6cd3f859816cc228e1f7e1e1194a2f1

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            336c403f161001776e3291996db53e95

            SHA1

            31194a9a7c98bf55d7e850a6ea554b90fea86b7c

            SHA256

            aa008b697052b2dfb78e286e0004fabffed3ff41bbd5df558972921ab00ce8a8

            SHA512

            68fa942e7a89497bc815322008def597a1a3c4555541737113f430855a14f886102f8f870560018b215a517591864f80f3ae29efd5152f040b52b95dbf649900

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            026dcf299e891653ab33f2f617a7cf98

            SHA1

            8d68a30b0e836ba4fa7848652cacdb5dcb3d7be5

            SHA256

            61bf67f649d4e92f6e18880a459a041d2da7e080d63abff7f63a14c4e682795b

            SHA512

            86fff40f7661070303232b9f6ae1b4e2d710c87af1017e7e2c629f3b703ad36d61470c3ebd26610597fa00309335c2d797c0114475c7fde143c2fccea418f500

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            026dcf299e891653ab33f2f617a7cf98

            SHA1

            8d68a30b0e836ba4fa7848652cacdb5dcb3d7be5

            SHA256

            61bf67f649d4e92f6e18880a459a041d2da7e080d63abff7f63a14c4e682795b

            SHA512

            86fff40f7661070303232b9f6ae1b4e2d710c87af1017e7e2c629f3b703ad36d61470c3ebd26610597fa00309335c2d797c0114475c7fde143c2fccea418f500

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            65b636350452307b0ad02a041ef35020

            SHA1

            f90d02f5013a95d16d9568c6d72b5dc95856c36f

            SHA256

            0bfbdd7b4b546def001efe982473916b8f79010f418057304027656e5d91d1aa

            SHA512

            86803dec7681e465f82612ff3d8e42d26964067eecf36386aa22940c97ea8407d13a4788a7347226e6d8e1c2c62a8a8862f9c26d0132b5bfed85689086858f00

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            65b636350452307b0ad02a041ef35020

            SHA1

            f90d02f5013a95d16d9568c6d72b5dc95856c36f

            SHA256

            0bfbdd7b4b546def001efe982473916b8f79010f418057304027656e5d91d1aa

            SHA512

            86803dec7681e465f82612ff3d8e42d26964067eecf36386aa22940c97ea8407d13a4788a7347226e6d8e1c2c62a8a8862f9c26d0132b5bfed85689086858f00

          • \Users\Admin\AppData\Local\Temp\nstFFB.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstFFB.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstFFB.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstFFB.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstFFB.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f009d007b668ea1f626e26ee4b86fd56

            SHA1

            6c8572d88ff3b8aaaa6471473ad768272176f868

            SHA256

            030bf227495cb0669910f38e49f242fd2b86c08eb05b297aa0568961ab158809

            SHA512

            0e7e307d05015bc401e4adcde5ecef33f2b37b705116c2fa12501f942b2f9c769d6598e3390411ced02ea073d078e1a1638635e10e28437783cba4b9f2bddcd9

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f009d007b668ea1f626e26ee4b86fd56

            SHA1

            6c8572d88ff3b8aaaa6471473ad768272176f868

            SHA256

            030bf227495cb0669910f38e49f242fd2b86c08eb05b297aa0568961ab158809

            SHA512

            0e7e307d05015bc401e4adcde5ecef33f2b37b705116c2fa12501f942b2f9c769d6598e3390411ced02ea073d078e1a1638635e10e28437783cba4b9f2bddcd9

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f009d007b668ea1f626e26ee4b86fd56

            SHA1

            6c8572d88ff3b8aaaa6471473ad768272176f868

            SHA256

            030bf227495cb0669910f38e49f242fd2b86c08eb05b297aa0568961ab158809

            SHA512

            0e7e307d05015bc401e4adcde5ecef33f2b37b705116c2fa12501f942b2f9c769d6598e3390411ced02ea073d078e1a1638635e10e28437783cba4b9f2bddcd9

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            97229141c168654ed50ee5c12e60a2f5

            SHA1

            6344cd5afb507fc901b81068d3878e0a7c98a4ee

            SHA256

            180c8dec2991e7cec163988fe06ec2953a7dfc5ac8423602756c176fb8dae0ed

            SHA512

            fd0a6962dc7a1e6c637320ca7d302fccde7b41302b9cc1fce861d927ace7075aa7bde7f58b9bd793f7888a6158482627b6cd3f859816cc228e1f7e1e1194a2f1

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            97229141c168654ed50ee5c12e60a2f5

            SHA1

            6344cd5afb507fc901b81068d3878e0a7c98a4ee

            SHA256

            180c8dec2991e7cec163988fe06ec2953a7dfc5ac8423602756c176fb8dae0ed

            SHA512

            fd0a6962dc7a1e6c637320ca7d302fccde7b41302b9cc1fce861d927ace7075aa7bde7f58b9bd793f7888a6158482627b6cd3f859816cc228e1f7e1e1194a2f1

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            336c403f161001776e3291996db53e95

            SHA1

            31194a9a7c98bf55d7e850a6ea554b90fea86b7c

            SHA256

            aa008b697052b2dfb78e286e0004fabffed3ff41bbd5df558972921ab00ce8a8

            SHA512

            68fa942e7a89497bc815322008def597a1a3c4555541737113f430855a14f886102f8f870560018b215a517591864f80f3ae29efd5152f040b52b95dbf649900

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            026dcf299e891653ab33f2f617a7cf98

            SHA1

            8d68a30b0e836ba4fa7848652cacdb5dcb3d7be5

            SHA256

            61bf67f649d4e92f6e18880a459a041d2da7e080d63abff7f63a14c4e682795b

            SHA512

            86fff40f7661070303232b9f6ae1b4e2d710c87af1017e7e2c629f3b703ad36d61470c3ebd26610597fa00309335c2d797c0114475c7fde143c2fccea418f500

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            65b636350452307b0ad02a041ef35020

            SHA1

            f90d02f5013a95d16d9568c6d72b5dc95856c36f

            SHA256

            0bfbdd7b4b546def001efe982473916b8f79010f418057304027656e5d91d1aa

            SHA512

            86803dec7681e465f82612ff3d8e42d26964067eecf36386aa22940c97ea8407d13a4788a7347226e6d8e1c2c62a8a8862f9c26d0132b5bfed85689086858f00

          • memory/528-86-0x0000000000000000-mapping.dmp
          • memory/572-64-0x0000000000000000-mapping.dmp
          • memory/840-57-0x0000000000000000-mapping.dmp
          • memory/916-76-0x0000000000000000-mapping.dmp
          • memory/1108-62-0x0000000000000000-mapping.dmp
          • memory/1148-61-0x0000000000000000-mapping.dmp
          • memory/1284-54-0x0000000075931000-0x0000000075933000-memory.dmp
            Filesize

            8KB

          • memory/1284-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1284-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1668-58-0x0000000000000000-mapping.dmp
          • memory/1680-70-0x0000000000000000-mapping.dmp
          • memory/1776-87-0x0000000000000000-mapping.dmp
          • memory/1968-81-0x0000000000000000-mapping.dmp
          • memory/2016-80-0x0000000000000000-mapping.dmp