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Analysis

  • max time kernel
    22s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 23:46

General

  • Target

    788de09288759f30fbfd4e2432960dd1659048c44a1d7c577a4fffe997058e1d.exe

  • Size

    830KB

  • MD5

    45d1ffbff447f320bc5d62258b5c3a18

  • SHA1

    2fa394f50fb8e7ec5aea9dca0f62241babf33847

  • SHA256

    788de09288759f30fbfd4e2432960dd1659048c44a1d7c577a4fffe997058e1d

  • SHA512

    887472a9d94bcc8598faab3dc2ccbe9d31d6c2f0ed7d5db6e3e919d784ed80f3013b55bbf1fa48c0a125e160f4659c1440b05a93b16dfbfccd290de8b64af3b4

  • SSDEEP

    24576:frfGR2wDeRMTC9rdbJlFxMXkSV9QWW+qO3BtE:fYYRMTErdO9QWlqMtE

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\788de09288759f30fbfd4e2432960dd1659048c44a1d7c577a4fffe997058e1d.exe
    "C:\Users\Admin\AppData\Local\Temp\788de09288759f30fbfd4e2432960dd1659048c44a1d7c577a4fffe997058e1d.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:1948
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1496
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1552
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:968
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1800
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:340
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:388
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:684
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1096
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1440
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:364
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1108
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:980

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            77b39da07b68cecbb6f712e74802594a

            SHA1

            79e2361ca2328306379b60c20091a9b362bae5a2

            SHA256

            99b74b5058df5339bb1422a331cc549d55d191e091646297b0ca05238efc6387

            SHA512

            9cf4a44a05ee619aba6946ec2585d0bb255e5947d4ff376dc543ded8f309a71424ee54d364e6e6456156e6dbedc89698fb5897203f3891d7c5788eb44d877b4f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            76c8f5726a589c7aee26cae35d061206

            SHA1

            1e0af5f5c411b7a0260220eb9df7c27bcf2e168b

            SHA256

            2a2f5cf8467f72b575f5d08607ebcd21976730fc769f9369279e0ade739f3f82

            SHA512

            b83db88f8dfabbd96e903bd597e973dd041565beb7de1111a52076a50127634b1f578471d79792d0b6891abda53cc9a579418814634ac4e0b72246f2ce908aaa

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            5a018c0b95420a1b2854154b64c5563b

            SHA1

            ba116ccc93fe4727dfdbafd6776d6bec6a031985

            SHA256

            79464fc81646103052d8c39b566c3206f0a9455cabfb9c3aa3208a6927bb09ed

            SHA512

            cf9930ffad27f6efa682db2363c87ac85fc6525f100328fa828b852f617067c3fa50a837dfa9c07a577f5abfacdc6c18ccc05608fc8d9c22a72b83da5fd467a4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            330KB

            MD5

            cb51e92ba7e6275903977022031df6b8

            SHA1

            86dfbd64efd2fe890df60b5fd617b96d18f6a21c

            SHA256

            79e1bec98dcb77022f436a7d9a46afc1f67402f3627092c7b708a3a7651b83a4

            SHA512

            b496d63f81e1f6150042ae775e9ff04bd9030e0976f74e8ac4912c4d63ff9450b6c1b025c63e9cad7fac12553167b60b794c5fbb5218a0cced77118894758be4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            330KB

            MD5

            cb51e92ba7e6275903977022031df6b8

            SHA1

            86dfbd64efd2fe890df60b5fd617b96d18f6a21c

            SHA256

            79e1bec98dcb77022f436a7d9a46afc1f67402f3627092c7b708a3a7651b83a4

            SHA512

            b496d63f81e1f6150042ae775e9ff04bd9030e0976f74e8ac4912c4d63ff9450b6c1b025c63e9cad7fac12553167b60b794c5fbb5218a0cced77118894758be4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            7aefe58d7527e3e60ea4e9234696158d

            SHA1

            ff02bb8028fb48bb326227035c39436e48ba52a6

            SHA256

            0674722ce5bfbc98561c9287ef847c5bcce74fa84f8f840ad5d426835a25018b

            SHA512

            4604fabf502a111d47b2dc2616ed5d995e91ee56d2c602cf6279daf0f45496d481c60381fd187dedcf08636fa0870cb429eba1dfeaf4dd2d84e0cf94b69b42bd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            7aefe58d7527e3e60ea4e9234696158d

            SHA1

            ff02bb8028fb48bb326227035c39436e48ba52a6

            SHA256

            0674722ce5bfbc98561c9287ef847c5bcce74fa84f8f840ad5d426835a25018b

            SHA512

            4604fabf502a111d47b2dc2616ed5d995e91ee56d2c602cf6279daf0f45496d481c60381fd187dedcf08636fa0870cb429eba1dfeaf4dd2d84e0cf94b69b42bd

          • \Users\Admin\AppData\Local\Temp\nst3D61.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst3D61.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3D61.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3D61.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3D61.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            77b39da07b68cecbb6f712e74802594a

            SHA1

            79e2361ca2328306379b60c20091a9b362bae5a2

            SHA256

            99b74b5058df5339bb1422a331cc549d55d191e091646297b0ca05238efc6387

            SHA512

            9cf4a44a05ee619aba6946ec2585d0bb255e5947d4ff376dc543ded8f309a71424ee54d364e6e6456156e6dbedc89698fb5897203f3891d7c5788eb44d877b4f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            77b39da07b68cecbb6f712e74802594a

            SHA1

            79e2361ca2328306379b60c20091a9b362bae5a2

            SHA256

            99b74b5058df5339bb1422a331cc549d55d191e091646297b0ca05238efc6387

            SHA512

            9cf4a44a05ee619aba6946ec2585d0bb255e5947d4ff376dc543ded8f309a71424ee54d364e6e6456156e6dbedc89698fb5897203f3891d7c5788eb44d877b4f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            77b39da07b68cecbb6f712e74802594a

            SHA1

            79e2361ca2328306379b60c20091a9b362bae5a2

            SHA256

            99b74b5058df5339bb1422a331cc549d55d191e091646297b0ca05238efc6387

            SHA512

            9cf4a44a05ee619aba6946ec2585d0bb255e5947d4ff376dc543ded8f309a71424ee54d364e6e6456156e6dbedc89698fb5897203f3891d7c5788eb44d877b4f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            76c8f5726a589c7aee26cae35d061206

            SHA1

            1e0af5f5c411b7a0260220eb9df7c27bcf2e168b

            SHA256

            2a2f5cf8467f72b575f5d08607ebcd21976730fc769f9369279e0ade739f3f82

            SHA512

            b83db88f8dfabbd96e903bd597e973dd041565beb7de1111a52076a50127634b1f578471d79792d0b6891abda53cc9a579418814634ac4e0b72246f2ce908aaa

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            76c8f5726a589c7aee26cae35d061206

            SHA1

            1e0af5f5c411b7a0260220eb9df7c27bcf2e168b

            SHA256

            2a2f5cf8467f72b575f5d08607ebcd21976730fc769f9369279e0ade739f3f82

            SHA512

            b83db88f8dfabbd96e903bd597e973dd041565beb7de1111a52076a50127634b1f578471d79792d0b6891abda53cc9a579418814634ac4e0b72246f2ce908aaa

          • \Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            5a018c0b95420a1b2854154b64c5563b

            SHA1

            ba116ccc93fe4727dfdbafd6776d6bec6a031985

            SHA256

            79464fc81646103052d8c39b566c3206f0a9455cabfb9c3aa3208a6927bb09ed

            SHA512

            cf9930ffad27f6efa682db2363c87ac85fc6525f100328fa828b852f617067c3fa50a837dfa9c07a577f5abfacdc6c18ccc05608fc8d9c22a72b83da5fd467a4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            330KB

            MD5

            cb51e92ba7e6275903977022031df6b8

            SHA1

            86dfbd64efd2fe890df60b5fd617b96d18f6a21c

            SHA256

            79e1bec98dcb77022f436a7d9a46afc1f67402f3627092c7b708a3a7651b83a4

            SHA512

            b496d63f81e1f6150042ae775e9ff04bd9030e0976f74e8ac4912c4d63ff9450b6c1b025c63e9cad7fac12553167b60b794c5fbb5218a0cced77118894758be4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            7aefe58d7527e3e60ea4e9234696158d

            SHA1

            ff02bb8028fb48bb326227035c39436e48ba52a6

            SHA256

            0674722ce5bfbc98561c9287ef847c5bcce74fa84f8f840ad5d426835a25018b

            SHA512

            4604fabf502a111d47b2dc2616ed5d995e91ee56d2c602cf6279daf0f45496d481c60381fd187dedcf08636fa0870cb429eba1dfeaf4dd2d84e0cf94b69b42bd

          • memory/1948-54-0x0000000074F01000-0x0000000074F03000-memory.dmp

            Filesize

            8KB

          • memory/1948-62-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/1948-90-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB