Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    43b4f6ab02ea59387cf4f5b813060c15c538615cdade02068436ea095e04c1f1.exe

  • Size

    602KB

  • MD5

    b845079d273940db832b66528d7b51be

  • SHA1

    fe4072b4d13812cb85e04cd2767628b6f1219124

  • SHA256

    43b4f6ab02ea59387cf4f5b813060c15c538615cdade02068436ea095e04c1f1

  • SHA512

    8b77c40fcfbd378c3a592ff13bff50d171296d5d45ed1eaf173fd1d3e1d35d33dd8bd5fa938695f702674c71d33164bada29ddaf8b660e2a075c5f38c535fcfb

  • SSDEEP

    12288:oIny5DYTZImDFzv20YUT2mFw4004ymy2/XET9ZLGHsDCY/X:mUTZtxv2ST2m209G/XE7GHsr/

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\43b4f6ab02ea59387cf4f5b813060c15c538615cdade02068436ea095e04c1f1.exe
    "C:\Users\Admin\AppData\Local\Temp\43b4f6ab02ea59387cf4f5b813060c15c538615cdade02068436ea095e04c1f1.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:992
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1580
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1380
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1620
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1640
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1404
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1776
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1036
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:564
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1540
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:772
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:844
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:536

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4c98e52b04cd78abb9a8e0ae4d94c6b0

            SHA1

            aeb8aaaa39474071723f5b5f1363d27d2d8b2d54

            SHA256

            e05238088adcfce50ce0092427e42e519f56a2b0018a4d9b2f1a2f98f1ec22ad

            SHA512

            74cfe8a2c330ae32958be15a2aba3dd242f0fd22fe09af1fd00ee45258cd29cf6327086e8923a49ee61614c8979a2661fda8586e3c4473e149a19468af5fd166

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3f502c313759b8abadf8d522f470de39

            SHA1

            bca2e5fa22a8adb1a8b2f128b10ad4ea0988cce3

            SHA256

            08ca6a2bec2fb04e68fe1ff513833173e32b2f02d03a95ee08c5f929936df395

            SHA512

            9a03b6975181f48e866031a079ba0449ddf1394857dfad0040d9e613cc4322df31a18583cdb18eec4163dd3593c31cf61bc4ca4bcc4e50d1d058442cdc1ffa1f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7e6f99442e1b03df67932855e28c696a

            SHA1

            1d3b3202bbeba3e0051b7d0ac873091a941d6ef2

            SHA256

            4c92d67d54926963629128ce9ddf26f4f8056d07fadcd9d5e4530ab79fd585e4

            SHA512

            f244e0116b66fa467e477e402f2ef893251204e52c6e927a14fe18255f30251338dc23e45f4024f0a1f7ae6442b414040e995a49ba462d53214823570821e8e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9ded839dabf4f951916470ab2de39e82

            SHA1

            4e918aaa38234d49d851eb3d230847f6f1fedda9

            SHA256

            21fa7adf4fe6a6d4a05980af9daa980d580adfe9a56895504f1befc617f3a009

            SHA512

            5500850d30b56ce5f218af210c72014f7ec0973028d1adf7c471a9c288e1baf68104d3fce4f8d984e7615407b3f340d556734bfda78bb7743a771f9d1fd3cf5a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9ded839dabf4f951916470ab2de39e82

            SHA1

            4e918aaa38234d49d851eb3d230847f6f1fedda9

            SHA256

            21fa7adf4fe6a6d4a05980af9daa980d580adfe9a56895504f1befc617f3a009

            SHA512

            5500850d30b56ce5f218af210c72014f7ec0973028d1adf7c471a9c288e1baf68104d3fce4f8d984e7615407b3f340d556734bfda78bb7743a771f9d1fd3cf5a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a23fc84321cac5ddd3c3e7d0922aedd0

            SHA1

            23e278c1e87ef008b7cb7e5725751a771959ea97

            SHA256

            01f18ba7e773221e82c7e0d98a0182f406a3618aa5fc04b2a7099347fd89cae6

            SHA512

            8f892ca6af840801712e2b21242db091bcbf73d719e8681b98d47f0c755a3d7b0b87b4c37aa969da9d3e45c22aedae0ff46fe2e21d36ea60f56f96c3b447c847

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a23fc84321cac5ddd3c3e7d0922aedd0

            SHA1

            23e278c1e87ef008b7cb7e5725751a771959ea97

            SHA256

            01f18ba7e773221e82c7e0d98a0182f406a3618aa5fc04b2a7099347fd89cae6

            SHA512

            8f892ca6af840801712e2b21242db091bcbf73d719e8681b98d47f0c755a3d7b0b87b4c37aa969da9d3e45c22aedae0ff46fe2e21d36ea60f56f96c3b447c847

          • \Users\Admin\AppData\Local\Temp\nsyF682.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyF682.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF682.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF682.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyF682.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4c98e52b04cd78abb9a8e0ae4d94c6b0

            SHA1

            aeb8aaaa39474071723f5b5f1363d27d2d8b2d54

            SHA256

            e05238088adcfce50ce0092427e42e519f56a2b0018a4d9b2f1a2f98f1ec22ad

            SHA512

            74cfe8a2c330ae32958be15a2aba3dd242f0fd22fe09af1fd00ee45258cd29cf6327086e8923a49ee61614c8979a2661fda8586e3c4473e149a19468af5fd166

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4c98e52b04cd78abb9a8e0ae4d94c6b0

            SHA1

            aeb8aaaa39474071723f5b5f1363d27d2d8b2d54

            SHA256

            e05238088adcfce50ce0092427e42e519f56a2b0018a4d9b2f1a2f98f1ec22ad

            SHA512

            74cfe8a2c330ae32958be15a2aba3dd242f0fd22fe09af1fd00ee45258cd29cf6327086e8923a49ee61614c8979a2661fda8586e3c4473e149a19468af5fd166

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4c98e52b04cd78abb9a8e0ae4d94c6b0

            SHA1

            aeb8aaaa39474071723f5b5f1363d27d2d8b2d54

            SHA256

            e05238088adcfce50ce0092427e42e519f56a2b0018a4d9b2f1a2f98f1ec22ad

            SHA512

            74cfe8a2c330ae32958be15a2aba3dd242f0fd22fe09af1fd00ee45258cd29cf6327086e8923a49ee61614c8979a2661fda8586e3c4473e149a19468af5fd166

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3f502c313759b8abadf8d522f470de39

            SHA1

            bca2e5fa22a8adb1a8b2f128b10ad4ea0988cce3

            SHA256

            08ca6a2bec2fb04e68fe1ff513833173e32b2f02d03a95ee08c5f929936df395

            SHA512

            9a03b6975181f48e866031a079ba0449ddf1394857dfad0040d9e613cc4322df31a18583cdb18eec4163dd3593c31cf61bc4ca4bcc4e50d1d058442cdc1ffa1f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3f502c313759b8abadf8d522f470de39

            SHA1

            bca2e5fa22a8adb1a8b2f128b10ad4ea0988cce3

            SHA256

            08ca6a2bec2fb04e68fe1ff513833173e32b2f02d03a95ee08c5f929936df395

            SHA512

            9a03b6975181f48e866031a079ba0449ddf1394857dfad0040d9e613cc4322df31a18583cdb18eec4163dd3593c31cf61bc4ca4bcc4e50d1d058442cdc1ffa1f

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7e6f99442e1b03df67932855e28c696a

            SHA1

            1d3b3202bbeba3e0051b7d0ac873091a941d6ef2

            SHA256

            4c92d67d54926963629128ce9ddf26f4f8056d07fadcd9d5e4530ab79fd585e4

            SHA512

            f244e0116b66fa467e477e402f2ef893251204e52c6e927a14fe18255f30251338dc23e45f4024f0a1f7ae6442b414040e995a49ba462d53214823570821e8e2

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9ded839dabf4f951916470ab2de39e82

            SHA1

            4e918aaa38234d49d851eb3d230847f6f1fedda9

            SHA256

            21fa7adf4fe6a6d4a05980af9daa980d580adfe9a56895504f1befc617f3a009

            SHA512

            5500850d30b56ce5f218af210c72014f7ec0973028d1adf7c471a9c288e1baf68104d3fce4f8d984e7615407b3f340d556734bfda78bb7743a771f9d1fd3cf5a

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a23fc84321cac5ddd3c3e7d0922aedd0

            SHA1

            23e278c1e87ef008b7cb7e5725751a771959ea97

            SHA256

            01f18ba7e773221e82c7e0d98a0182f406a3618aa5fc04b2a7099347fd89cae6

            SHA512

            8f892ca6af840801712e2b21242db091bcbf73d719e8681b98d47f0c755a3d7b0b87b4c37aa969da9d3e45c22aedae0ff46fe2e21d36ea60f56f96c3b447c847

          • memory/564-81-0x0000000000000000-mapping.dmp

          • memory/772-87-0x0000000000000000-mapping.dmp

          • memory/992-57-0x0000000000000000-mapping.dmp

          • memory/1036-80-0x0000000000000000-mapping.dmp

          • memory/1380-61-0x0000000000000000-mapping.dmp

          • memory/1404-70-0x0000000000000000-mapping.dmp

          • memory/1540-86-0x0000000000000000-mapping.dmp

          • memory/1580-58-0x0000000000000000-mapping.dmp

          • memory/1620-62-0x0000000000000000-mapping.dmp

          • memory/1640-64-0x0000000000000000-mapping.dmp

          • memory/1652-54-0x0000000076041000-0x0000000076043000-memory.dmp

            Filesize

            8KB

          • memory/1652-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1652-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1776-76-0x0000000000000000-mapping.dmp