Analysis

  • max time kernel
    68s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    85208dd3767cfa41cd2474b272e4c27cdfc011845526918c621d205558c4410e.exe

  • Size

    602KB

  • MD5

    191865d7efa54f6f7111034c8d02f158

  • SHA1

    120a6ac60b8f27ded8aae9801a9a84075de5e161

  • SHA256

    85208dd3767cfa41cd2474b272e4c27cdfc011845526918c621d205558c4410e

  • SHA512

    142440b9f869ab38423cd34ea7a8c723be8e99dbb21dac421c8beeb169a962da6c87ecccdb3f712afeb02525a7f52bb5bda592ac1e9983a138ad1f06fc969950

  • SSDEEP

    12288:xIny5DYTkI0/iy8ZDUBp3rFFVI4mBd5uEihs4+K7Dt+Z+5UKWk6Wgo:NUTkv/OZDUfbmCWWWO7lx

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\85208dd3767cfa41cd2474b272e4c27cdfc011845526918c621d205558c4410e.exe
    "C:\Users\Admin\AppData\Local\Temp\85208dd3767cfa41cd2474b272e4c27cdfc011845526918c621d205558c4410e.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:1396
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1188
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:872
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:524
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1480
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:588
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:756
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1664
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1892
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1576
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2044
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:956
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1956
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1572

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9c82990865146ba2cb142b4f80c6f82

            SHA1

            2e8099e820f31d427a8c566ddd4c07a831cb7cc9

            SHA256

            1db971ccd0c106900544f89bf9905dda21ebbd8580e40fc0282a906d8492bca6

            SHA512

            aec291bbdfee471afb33cfb4c02f39cbe7b4d922dce8e4675560d8dfd9936b487168d5b96fbedc5f30d80e3c86cf6766b88fefa1488629e26955597e8f65b9f5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            fdab520c9ad9ae0446da4fdb7aecadc1

            SHA1

            0d01196cb30be94989abc007daf6b3bdf9bd17b0

            SHA256

            8ef5cd8af302553c9569e63aa9f5d88624ac2782074959720b7dd90a221084ea

            SHA512

            a5133d3b84bdf6225547334996e62e1babcb3869ea0aa640ee779e71168971cdd2392557d8caf766a2ced51c5fa075750580ead04941c73c9d4d83921d1ffca8

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8328a807594f06583c99a257a2176ac6

            SHA1

            489d43598dc8d71bb301b88f4df751f8b0e45dc6

            SHA256

            411c7357e86702f32457f97b24e1b1b662ac50e7714ac4d65b6a708f2c619633

            SHA512

            054352991830f43713ee912a7fbaea4b69885d386dec21dda908e8d5f1d709dca06859b1f6211d26213bfc2380e7dfcbf33629d4f97c32acd4bc53e9f12f2982

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            63da941f50567b2f48f1db56667723d3

            SHA1

            d7d3b960d4d62ca6e44c6b6b300aa9ed2f8c4839

            SHA256

            4fe06c9a13d700dc2eda5393e7065493e853da255c47b83a543404a27bfa967f

            SHA512

            d45f48c4eb7c4dcae682e5db48d31c3a8f2890cba5338eefb9106ea6d23cce53463594023b9cbe9c09607941756d7360e927ac9248074445ad70ffdd5db20cda

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            63da941f50567b2f48f1db56667723d3

            SHA1

            d7d3b960d4d62ca6e44c6b6b300aa9ed2f8c4839

            SHA256

            4fe06c9a13d700dc2eda5393e7065493e853da255c47b83a543404a27bfa967f

            SHA512

            d45f48c4eb7c4dcae682e5db48d31c3a8f2890cba5338eefb9106ea6d23cce53463594023b9cbe9c09607941756d7360e927ac9248074445ad70ffdd5db20cda

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            311229abf7c6e004839338fb60b416eb

            SHA1

            c553115d919f200bab32596dba2570fceca6fdd8

            SHA256

            ec220974db4905bc7cf0ea8850b4c71c1d7fa6f77c53324dcd5599430d1ea5c1

            SHA512

            6f0039a8b9915fb1942ace43a62d0987b4c0ccf59b5149521f6410118cd2adcb3105293f44e8cd9db63de0824150dd91a0ab59cdebde42f05c8793d491984ba6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            311229abf7c6e004839338fb60b416eb

            SHA1

            c553115d919f200bab32596dba2570fceca6fdd8

            SHA256

            ec220974db4905bc7cf0ea8850b4c71c1d7fa6f77c53324dcd5599430d1ea5c1

            SHA512

            6f0039a8b9915fb1942ace43a62d0987b4c0ccf59b5149521f6410118cd2adcb3105293f44e8cd9db63de0824150dd91a0ab59cdebde42f05c8793d491984ba6

          • \Users\Admin\AppData\Local\Temp\nst3FC1.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst3FC1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3FC1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3FC1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3FC1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9c82990865146ba2cb142b4f80c6f82

            SHA1

            2e8099e820f31d427a8c566ddd4c07a831cb7cc9

            SHA256

            1db971ccd0c106900544f89bf9905dda21ebbd8580e40fc0282a906d8492bca6

            SHA512

            aec291bbdfee471afb33cfb4c02f39cbe7b4d922dce8e4675560d8dfd9936b487168d5b96fbedc5f30d80e3c86cf6766b88fefa1488629e26955597e8f65b9f5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9c82990865146ba2cb142b4f80c6f82

            SHA1

            2e8099e820f31d427a8c566ddd4c07a831cb7cc9

            SHA256

            1db971ccd0c106900544f89bf9905dda21ebbd8580e40fc0282a906d8492bca6

            SHA512

            aec291bbdfee471afb33cfb4c02f39cbe7b4d922dce8e4675560d8dfd9936b487168d5b96fbedc5f30d80e3c86cf6766b88fefa1488629e26955597e8f65b9f5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9c82990865146ba2cb142b4f80c6f82

            SHA1

            2e8099e820f31d427a8c566ddd4c07a831cb7cc9

            SHA256

            1db971ccd0c106900544f89bf9905dda21ebbd8580e40fc0282a906d8492bca6

            SHA512

            aec291bbdfee471afb33cfb4c02f39cbe7b4d922dce8e4675560d8dfd9936b487168d5b96fbedc5f30d80e3c86cf6766b88fefa1488629e26955597e8f65b9f5

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            fdab520c9ad9ae0446da4fdb7aecadc1

            SHA1

            0d01196cb30be94989abc007daf6b3bdf9bd17b0

            SHA256

            8ef5cd8af302553c9569e63aa9f5d88624ac2782074959720b7dd90a221084ea

            SHA512

            a5133d3b84bdf6225547334996e62e1babcb3869ea0aa640ee779e71168971cdd2392557d8caf766a2ced51c5fa075750580ead04941c73c9d4d83921d1ffca8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            fdab520c9ad9ae0446da4fdb7aecadc1

            SHA1

            0d01196cb30be94989abc007daf6b3bdf9bd17b0

            SHA256

            8ef5cd8af302553c9569e63aa9f5d88624ac2782074959720b7dd90a221084ea

            SHA512

            a5133d3b84bdf6225547334996e62e1babcb3869ea0aa640ee779e71168971cdd2392557d8caf766a2ced51c5fa075750580ead04941c73c9d4d83921d1ffca8

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8328a807594f06583c99a257a2176ac6

            SHA1

            489d43598dc8d71bb301b88f4df751f8b0e45dc6

            SHA256

            411c7357e86702f32457f97b24e1b1b662ac50e7714ac4d65b6a708f2c619633

            SHA512

            054352991830f43713ee912a7fbaea4b69885d386dec21dda908e8d5f1d709dca06859b1f6211d26213bfc2380e7dfcbf33629d4f97c32acd4bc53e9f12f2982

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            63da941f50567b2f48f1db56667723d3

            SHA1

            d7d3b960d4d62ca6e44c6b6b300aa9ed2f8c4839

            SHA256

            4fe06c9a13d700dc2eda5393e7065493e853da255c47b83a543404a27bfa967f

            SHA512

            d45f48c4eb7c4dcae682e5db48d31c3a8f2890cba5338eefb9106ea6d23cce53463594023b9cbe9c09607941756d7360e927ac9248074445ad70ffdd5db20cda

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            311229abf7c6e004839338fb60b416eb

            SHA1

            c553115d919f200bab32596dba2570fceca6fdd8

            SHA256

            ec220974db4905bc7cf0ea8850b4c71c1d7fa6f77c53324dcd5599430d1ea5c1

            SHA512

            6f0039a8b9915fb1942ace43a62d0987b4c0ccf59b5149521f6410118cd2adcb3105293f44e8cd9db63de0824150dd91a0ab59cdebde42f05c8793d491984ba6

          • memory/524-61-0x0000000000000000-mapping.dmp

          • memory/588-64-0x0000000000000000-mapping.dmp

          • memory/756-70-0x0000000000000000-mapping.dmp

          • memory/872-59-0x0000000000000000-mapping.dmp

          • memory/956-88-0x0000000000000000-mapping.dmp

          • memory/1188-58-0x0000000000000000-mapping.dmp

          • memory/1396-54-0x0000000075C31000-0x0000000075C33000-memory.dmp

            Filesize

            8KB

          • memory/1396-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1396-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1396-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1480-62-0x0000000000000000-mapping.dmp

          • memory/1576-82-0x0000000000000000-mapping.dmp

          • memory/1664-76-0x0000000000000000-mapping.dmp

          • memory/1892-81-0x0000000000000000-mapping.dmp

          • memory/2044-87-0x0000000000000000-mapping.dmp