Analysis

  • max time kernel
    40s
  • 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 10:49

General

  • Target

    f8aadc4d103bbbfd83f5ff946eb059e28d110dae98298c87455204c34cd90f8a.exe

  • Size

    445KB

  • MD5

    68633eeefcfa3dc7184e0a8e203a31c7

  • SHA1

    c5d4f1522678949a0863389aad2c5deebf302e50

  • SHA256

    f8aadc4d103bbbfd83f5ff946eb059e28d110dae98298c87455204c34cd90f8a

  • SHA512

    fc25e3e22938f3613233694ce5660f58b0c89ee16202e085fd144326707a6682da2895ddd1f54cf85a903b75f7b9e57799a24c36409a8cd6c66316e134ff3b27

  • SSDEEP

    6144:XzfHkjfwC2Tp+KL4NXeix4G5RrLswlg9pAUS+77bIS1Gje/ko4ePK5UQOYIuYa:7kECa9UNaS0wfe8ecTei5UQIuN

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\f8aadc4d103bbbfd83f5ff946eb059e28d110dae98298c87455204c34cd90f8a.exe
    "C:\Users\Admin\AppData\Local\Temp\f8aadc4d103bbbfd83f5ff946eb059e28d110dae98298c87455204c34cd90f8a.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:1552
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1216
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1976
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2040
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1732
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1992
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1436
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1632
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:616
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1408
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1100
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1236
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1312

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            13cad7868d1277a49af9377f09ce5fc1

            SHA1

            0780047451028c41a7a909e5cd40d7a954ad59cf

            SHA256

            2da0c7761184cf38cbeff8cc8beb521f0561840cd723c357cec421a33365d2d7

            SHA512

            149da8ccdbcfbbb62498537879115ac6e2b46e7d4fc73d9ab3d7054113153475baaabe8b9c5eeaab681bf1a35d6a70aeb885ad036a7d7f0f7b5b72445f87c4ff

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9de2fcf13e8ca840f89c973f20d67f4b

            SHA1

            1754b993d69736672931ecf2efda253aca5d679a

            SHA256

            db94b480c261394bed99f4b0c59af9e8252d79ea0222fcae207a6f4ef27d9467

            SHA512

            a77b49ef5a926df2cde0dd2889544ce20c3f89cf8c1d3458b96b244e3fb5984324072d8372ddf6217703a36f171b4613a7dc67133453186429191ce799f7dd37

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e20c9780dbecc02c8335df7717c86958

            SHA1

            22914f82cb2d64c9131a172bf904af6638b582a8

            SHA256

            e9f94a1557ca4464c35fbd6f0761e2b476531b52c0d450a7247f2d31b166dddb

            SHA512

            8f40f6b5828e7a11c084986247689ed6335f0d1a0b8b91f7a1c5c6216534ba001950fe1de59cf2997a79a2440b6b5865419b84a58ea2035f4386e8a8448b15e6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            64f7e54b1df2d7f1726fbd6474069cdc

            SHA1

            5cae87437641e292d65e5327701cfc3c287cfa30

            SHA256

            40d4f08f69374b18c42fd67e782b2e9824993a1a710d55b03cccaae015fc55ff

            SHA512

            5c75df5314d405c876ff01c0c8a00b6214282d9411bd98717ef250f4e4a7b9090fa06308019c60a6f258b25d827b45c7c2f5872c3cdee4e78f76bebba1478208

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            64f7e54b1df2d7f1726fbd6474069cdc

            SHA1

            5cae87437641e292d65e5327701cfc3c287cfa30

            SHA256

            40d4f08f69374b18c42fd67e782b2e9824993a1a710d55b03cccaae015fc55ff

            SHA512

            5c75df5314d405c876ff01c0c8a00b6214282d9411bd98717ef250f4e4a7b9090fa06308019c60a6f258b25d827b45c7c2f5872c3cdee4e78f76bebba1478208

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ee09315f030f88d35b7d1adfb614ad19

            SHA1

            8dcea24c2a372f411724e6754ae2fe612b5f0ffd

            SHA256

            7692ce37a885b1dcd7dd06beefcfc749dda56824b79d3f9d961e3e0ed3791579

            SHA512

            144fee8bd1ad3d4c8d28386c528c67587bf027db8377c4a0757539f010cd44c03bfd6ebb35e490a0f8a14f58c756bccc4c340a4e88aa08acae527122236978e1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ee09315f030f88d35b7d1adfb614ad19

            SHA1

            8dcea24c2a372f411724e6754ae2fe612b5f0ffd

            SHA256

            7692ce37a885b1dcd7dd06beefcfc749dda56824b79d3f9d961e3e0ed3791579

            SHA512

            144fee8bd1ad3d4c8d28386c528c67587bf027db8377c4a0757539f010cd44c03bfd6ebb35e490a0f8a14f58c756bccc4c340a4e88aa08acae527122236978e1

          • \Users\Admin\AppData\Local\Temp\nsi908.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsi908.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi908.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi908.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi908.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            13cad7868d1277a49af9377f09ce5fc1

            SHA1

            0780047451028c41a7a909e5cd40d7a954ad59cf

            SHA256

            2da0c7761184cf38cbeff8cc8beb521f0561840cd723c357cec421a33365d2d7

            SHA512

            149da8ccdbcfbbb62498537879115ac6e2b46e7d4fc73d9ab3d7054113153475baaabe8b9c5eeaab681bf1a35d6a70aeb885ad036a7d7f0f7b5b72445f87c4ff

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            13cad7868d1277a49af9377f09ce5fc1

            SHA1

            0780047451028c41a7a909e5cd40d7a954ad59cf

            SHA256

            2da0c7761184cf38cbeff8cc8beb521f0561840cd723c357cec421a33365d2d7

            SHA512

            149da8ccdbcfbbb62498537879115ac6e2b46e7d4fc73d9ab3d7054113153475baaabe8b9c5eeaab681bf1a35d6a70aeb885ad036a7d7f0f7b5b72445f87c4ff

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            13cad7868d1277a49af9377f09ce5fc1

            SHA1

            0780047451028c41a7a909e5cd40d7a954ad59cf

            SHA256

            2da0c7761184cf38cbeff8cc8beb521f0561840cd723c357cec421a33365d2d7

            SHA512

            149da8ccdbcfbbb62498537879115ac6e2b46e7d4fc73d9ab3d7054113153475baaabe8b9c5eeaab681bf1a35d6a70aeb885ad036a7d7f0f7b5b72445f87c4ff

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9de2fcf13e8ca840f89c973f20d67f4b

            SHA1

            1754b993d69736672931ecf2efda253aca5d679a

            SHA256

            db94b480c261394bed99f4b0c59af9e8252d79ea0222fcae207a6f4ef27d9467

            SHA512

            a77b49ef5a926df2cde0dd2889544ce20c3f89cf8c1d3458b96b244e3fb5984324072d8372ddf6217703a36f171b4613a7dc67133453186429191ce799f7dd37

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            9de2fcf13e8ca840f89c973f20d67f4b

            SHA1

            1754b993d69736672931ecf2efda253aca5d679a

            SHA256

            db94b480c261394bed99f4b0c59af9e8252d79ea0222fcae207a6f4ef27d9467

            SHA512

            a77b49ef5a926df2cde0dd2889544ce20c3f89cf8c1d3458b96b244e3fb5984324072d8372ddf6217703a36f171b4613a7dc67133453186429191ce799f7dd37

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e20c9780dbecc02c8335df7717c86958

            SHA1

            22914f82cb2d64c9131a172bf904af6638b582a8

            SHA256

            e9f94a1557ca4464c35fbd6f0761e2b476531b52c0d450a7247f2d31b166dddb

            SHA512

            8f40f6b5828e7a11c084986247689ed6335f0d1a0b8b91f7a1c5c6216534ba001950fe1de59cf2997a79a2440b6b5865419b84a58ea2035f4386e8a8448b15e6

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            64f7e54b1df2d7f1726fbd6474069cdc

            SHA1

            5cae87437641e292d65e5327701cfc3c287cfa30

            SHA256

            40d4f08f69374b18c42fd67e782b2e9824993a1a710d55b03cccaae015fc55ff

            SHA512

            5c75df5314d405c876ff01c0c8a00b6214282d9411bd98717ef250f4e4a7b9090fa06308019c60a6f258b25d827b45c7c2f5872c3cdee4e78f76bebba1478208

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ee09315f030f88d35b7d1adfb614ad19

            SHA1

            8dcea24c2a372f411724e6754ae2fe612b5f0ffd

            SHA256

            7692ce37a885b1dcd7dd06beefcfc749dda56824b79d3f9d961e3e0ed3791579

            SHA512

            144fee8bd1ad3d4c8d28386c528c67587bf027db8377c4a0757539f010cd44c03bfd6ebb35e490a0f8a14f58c756bccc4c340a4e88aa08acae527122236978e1

          • memory/616-80-0x0000000000000000-mapping.dmp

          • memory/900-57-0x0000000000000000-mapping.dmp

          • memory/1100-86-0x0000000000000000-mapping.dmp

          • memory/1216-58-0x0000000000000000-mapping.dmp

          • memory/1408-85-0x0000000000000000-mapping.dmp

          • memory/1436-75-0x0000000000000000-mapping.dmp

          • memory/1552-54-0x0000000075241000-0x0000000075243000-memory.dmp

            Filesize

            8KB

          • memory/1632-79-0x0000000000000000-mapping.dmp

          • memory/1732-63-0x0000000000000000-mapping.dmp

          • memory/1976-60-0x0000000000000000-mapping.dmp

          • memory/1992-69-0x0000000000000000-mapping.dmp

          • memory/2040-61-0x0000000000000000-mapping.dmp