Analysis

  • max time kernel
    44s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:06

General

  • Target

    fafa02136ab83334ff91531e2cfd9911ba7c5759df63beae12cbd225822440b2.exe

  • Size

    602KB

  • MD5

    75af14b7612dddb7239768b8d376eede

  • SHA1

    9e8044cb12c86e7526fd7913d1d5ca882efdd9ae

  • SHA256

    fafa02136ab83334ff91531e2cfd9911ba7c5759df63beae12cbd225822440b2

  • SHA512

    56cb245c9a13292cf927dc3e4b97877c5f0aae47122db2f98276e2fc4b610f8650c0e2363f76177da6bac57627b6e1715632d4f2537a1c8ca1eafa0a7bf1269a

  • SSDEEP

    12288:/Iny5DYTkI7yUDl6pL2cM/64A0l8mnvHtfIDUmqzgaU4b0q:nUTk0yUst7MN/82vtNm4gG4

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\fafa02136ab83334ff91531e2cfd9911ba7c5759df63beae12cbd225822440b2.exe
    "C:\Users\Admin\AppData\Local\Temp\fafa02136ab83334ff91531e2cfd9911ba7c5759df63beae12cbd225822440b2.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:852
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:940
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:584
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1248
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1872
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:860
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1536
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1568
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1908
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2012
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1256
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1392
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1064
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1432

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f6d5e9b22477a9151b46486cebe8bc0

            SHA1

            d6596a88e3bfb52ee820fbf862ea3bb71ad6370d

            SHA256

            d435a2920f1a8adab2481bfcdd82cfd0ca9f2e9aa4eab3a7d519d05baa9fceee

            SHA512

            88ae3376d3cef76a52c0264bd3fa42decbcecaf8d908498099ce235b83a644359c643233baec5836d579d7a3ce337fab4e49ca951227626475ad7612692d3ddd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d2d7ae2bc9a53705b3ff4a512eaac18e

            SHA1

            fea9b082964e12b0df5d3e5b1fc1dc48aaff5ece

            SHA256

            0b17ca8fb071ded9bc95c5752f90da4ae8c5a8fd497cbc04b4665d88706650de

            SHA512

            1bc87187fe9738404ce5e0bc47258fdc2e5e5eeb6f651df35689d0835c77b12551ccf7238d5d95a2d0816f06a4115375be0c68c28c41c14aa6423864a9a805c0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d4e66692b3bdd00a380b3606e80fe6a7

            SHA1

            237d63d33298230162f4c1224d5026c8db6fcfca

            SHA256

            742e7524670755614225afab1d66858b87d76e2acb33cbd97ae3abd7bbf4bf9f

            SHA512

            f820d894b0c9a88634a7064f40894a5bdca5b8245b77fd5d690b33a2c21fe5c2cae6392fdf7de4a3f1b251e6a7d9cba98547d4bec11ad25225283dda7e1fda87

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            85fd8da724798805a8f2fe9e720bb2c0

            SHA1

            d95d85f47a21364d8b900cf4a8551db399a78957

            SHA256

            0d5eb2cc4e5b21049e7013bee0684a956563f1c356b366da3426575c8958b56b

            SHA512

            55a3dcccb602fb14dd11f7d3e4256bc6455a6a02ce7b695cf696a16b7f08bcc30dc12a7e457474109eaaff522eb3a18d9b667a59143c29cdb1485cadbbcef4ae

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            85fd8da724798805a8f2fe9e720bb2c0

            SHA1

            d95d85f47a21364d8b900cf4a8551db399a78957

            SHA256

            0d5eb2cc4e5b21049e7013bee0684a956563f1c356b366da3426575c8958b56b

            SHA512

            55a3dcccb602fb14dd11f7d3e4256bc6455a6a02ce7b695cf696a16b7f08bcc30dc12a7e457474109eaaff522eb3a18d9b667a59143c29cdb1485cadbbcef4ae

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e24f32592fb47b82ebe9bf662b1e571a

            SHA1

            1028899e485bdd25b385cf6c8e4304772c931e03

            SHA256

            0a40aed0bf18c11a4c43cc8ede3f624093ddb8dc46d0f670e707da9e3f4032db

            SHA512

            03007dd051a45a6951e85742ec8f7fec45ee14a3fdceadb2feb0b5431dd73c22973adf69f83c77ce1edc43ec23bc64ac4214776679eb5f07b402fb345c777d7a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e24f32592fb47b82ebe9bf662b1e571a

            SHA1

            1028899e485bdd25b385cf6c8e4304772c931e03

            SHA256

            0a40aed0bf18c11a4c43cc8ede3f624093ddb8dc46d0f670e707da9e3f4032db

            SHA512

            03007dd051a45a6951e85742ec8f7fec45ee14a3fdceadb2feb0b5431dd73c22973adf69f83c77ce1edc43ec23bc64ac4214776679eb5f07b402fb345c777d7a

          • \Users\Admin\AppData\Local\Temp\nst2FAB.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst2FAB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2FAB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2FAB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2FAB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f6d5e9b22477a9151b46486cebe8bc0

            SHA1

            d6596a88e3bfb52ee820fbf862ea3bb71ad6370d

            SHA256

            d435a2920f1a8adab2481bfcdd82cfd0ca9f2e9aa4eab3a7d519d05baa9fceee

            SHA512

            88ae3376d3cef76a52c0264bd3fa42decbcecaf8d908498099ce235b83a644359c643233baec5836d579d7a3ce337fab4e49ca951227626475ad7612692d3ddd

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f6d5e9b22477a9151b46486cebe8bc0

            SHA1

            d6596a88e3bfb52ee820fbf862ea3bb71ad6370d

            SHA256

            d435a2920f1a8adab2481bfcdd82cfd0ca9f2e9aa4eab3a7d519d05baa9fceee

            SHA512

            88ae3376d3cef76a52c0264bd3fa42decbcecaf8d908498099ce235b83a644359c643233baec5836d579d7a3ce337fab4e49ca951227626475ad7612692d3ddd

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f6d5e9b22477a9151b46486cebe8bc0

            SHA1

            d6596a88e3bfb52ee820fbf862ea3bb71ad6370d

            SHA256

            d435a2920f1a8adab2481bfcdd82cfd0ca9f2e9aa4eab3a7d519d05baa9fceee

            SHA512

            88ae3376d3cef76a52c0264bd3fa42decbcecaf8d908498099ce235b83a644359c643233baec5836d579d7a3ce337fab4e49ca951227626475ad7612692d3ddd

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d2d7ae2bc9a53705b3ff4a512eaac18e

            SHA1

            fea9b082964e12b0df5d3e5b1fc1dc48aaff5ece

            SHA256

            0b17ca8fb071ded9bc95c5752f90da4ae8c5a8fd497cbc04b4665d88706650de

            SHA512

            1bc87187fe9738404ce5e0bc47258fdc2e5e5eeb6f651df35689d0835c77b12551ccf7238d5d95a2d0816f06a4115375be0c68c28c41c14aa6423864a9a805c0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d2d7ae2bc9a53705b3ff4a512eaac18e

            SHA1

            fea9b082964e12b0df5d3e5b1fc1dc48aaff5ece

            SHA256

            0b17ca8fb071ded9bc95c5752f90da4ae8c5a8fd497cbc04b4665d88706650de

            SHA512

            1bc87187fe9738404ce5e0bc47258fdc2e5e5eeb6f651df35689d0835c77b12551ccf7238d5d95a2d0816f06a4115375be0c68c28c41c14aa6423864a9a805c0

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d4e66692b3bdd00a380b3606e80fe6a7

            SHA1

            237d63d33298230162f4c1224d5026c8db6fcfca

            SHA256

            742e7524670755614225afab1d66858b87d76e2acb33cbd97ae3abd7bbf4bf9f

            SHA512

            f820d894b0c9a88634a7064f40894a5bdca5b8245b77fd5d690b33a2c21fe5c2cae6392fdf7de4a3f1b251e6a7d9cba98547d4bec11ad25225283dda7e1fda87

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            85fd8da724798805a8f2fe9e720bb2c0

            SHA1

            d95d85f47a21364d8b900cf4a8551db399a78957

            SHA256

            0d5eb2cc4e5b21049e7013bee0684a956563f1c356b366da3426575c8958b56b

            SHA512

            55a3dcccb602fb14dd11f7d3e4256bc6455a6a02ce7b695cf696a16b7f08bcc30dc12a7e457474109eaaff522eb3a18d9b667a59143c29cdb1485cadbbcef4ae

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e24f32592fb47b82ebe9bf662b1e571a

            SHA1

            1028899e485bdd25b385cf6c8e4304772c931e03

            SHA256

            0a40aed0bf18c11a4c43cc8ede3f624093ddb8dc46d0f670e707da9e3f4032db

            SHA512

            03007dd051a45a6951e85742ec8f7fec45ee14a3fdceadb2feb0b5431dd73c22973adf69f83c77ce1edc43ec23bc64ac4214776679eb5f07b402fb345c777d7a

          • memory/584-59-0x0000000000000000-mapping.dmp

          • memory/852-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/852-54-0x0000000074E41000-0x0000000074E43000-memory.dmp

            Filesize

            8KB

          • memory/852-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/860-64-0x0000000000000000-mapping.dmp

          • memory/940-57-0x0000000000000000-mapping.dmp

          • memory/1248-61-0x0000000000000000-mapping.dmp

          • memory/1256-86-0x0000000000000000-mapping.dmp

          • memory/1392-87-0x0000000000000000-mapping.dmp

          • memory/1536-70-0x0000000000000000-mapping.dmp

          • memory/1568-76-0x0000000000000000-mapping.dmp

          • memory/1872-62-0x0000000000000000-mapping.dmp

          • memory/1908-80-0x0000000000000000-mapping.dmp

          • memory/2012-81-0x0000000000000000-mapping.dmp