Analysis

  • max time kernel
    98s
  • 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 10:59

General

  • Target

    1a3b0f9f772238f49c506b6339bd3db86aca1a239c957d3d1e9a70c54905050b.exe

  • Size

    446KB

  • MD5

    3130b132232ae3458473df27a02d99df

  • SHA1

    16d94af790960c2bdfd22b74d8bc3f6314855399

  • SHA256

    1a3b0f9f772238f49c506b6339bd3db86aca1a239c957d3d1e9a70c54905050b

  • SHA512

    72e05841604a29b18a1d35cf160da86b55f67850cf9c7127331445d47c059955b5024e13181461ed3450fb1ebf0e1a9aa46316aef59f355e6599616f018e8d11

  • SSDEEP

    12288:RPXfRr19UY4vXVPN7D168uyGwz1GyNoJnUf7wBZjmLlpKh:RPJr19/0XDDhuyGdqAUfEBZjm5pKh

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\1a3b0f9f772238f49c506b6339bd3db86aca1a239c957d3d1e9a70c54905050b.exe
    "C:\Users\Admin\AppData\Local\Temp\1a3b0f9f772238f49c506b6339bd3db86aca1a239c957d3d1e9a70c54905050b.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:1060
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:772
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1164
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:692
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:824
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1676
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:360
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1472
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:280
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1728
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1556
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1688
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1992

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c1a9a5db009eeeabbe25d4791981aab6

            SHA1

            a621d963675750540d77adbea8ec2fe021e905a2

            SHA256

            41b0b0f0780495c519be61a2631fbdfc203a3786c3dde675b7896778715a4daa

            SHA512

            6a7eeecc86771a79cd79b0c102b10d4f295c59bb3a8b550bc22734cd8ee54094170e845814fb9f1e704056fbf9f6b582b936a332c10bd9e593bb41ebf77fd98e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e6c8bf81997a8f09353395d9c0bb7c6b

            SHA1

            3353c1ac2b7901167db68541f2695c06788a55cd

            SHA256

            c44ad23e76135b7d92b2fe66f47fd0eef6582021ab2174ba9ffd01e80051325d

            SHA512

            604d91851b61bb888319e36006e0eb645656b65475767c82a32b15f525dc52e89e15b79a5a60353bd18d60200f0d04eba999110a7d8d8d9599584fb1a3583884

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            33de6c48635e8cc80e344a1e630b92cb

            SHA1

            e7bfa1085dc57feac3d294ebff9f026e70454658

            SHA256

            312f574ef09d78834b3b4422cf7be1d07ec0f98bde86eb609f69ff89b333f94f

            SHA512

            522afd8a85eeeeaf71c1fb855e74bd85a8326a7d3bc9110bbee90fa0664aa0ba1afd82bad654af90e572e879435e487a99055317a36a2e3e2b57c33c45854b0e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            77332eb3ad3021a25378d8752e570c7b

            SHA1

            6367739dce6cf6a7cc8c7ed29faf3f85e77b3072

            SHA256

            2bbc258f15584418b4cfbe8fe2535676fc663fa79a10567dfa46efa4b9df064e

            SHA512

            68eeae58dd4ffe48c89ee990291c1a9697d72534400855ee4d673d46f44a1b8476b816b5debd108484180f77da818b31e2174bfd198d1b0fe2da9fc437231329

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            77332eb3ad3021a25378d8752e570c7b

            SHA1

            6367739dce6cf6a7cc8c7ed29faf3f85e77b3072

            SHA256

            2bbc258f15584418b4cfbe8fe2535676fc663fa79a10567dfa46efa4b9df064e

            SHA512

            68eeae58dd4ffe48c89ee990291c1a9697d72534400855ee4d673d46f44a1b8476b816b5debd108484180f77da818b31e2174bfd198d1b0fe2da9fc437231329

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c75edcd6220ff9dbf1a9c00068c376e6

            SHA1

            63ae0cd635562e2f2a4bd96d4bbf0af59f538a3d

            SHA256

            c43cbd98f3cdb6c85ca2cde5a2cb32bc160ae99b55f3f762b976f9be95b4e9f6

            SHA512

            fc68c0a03ae138120f8436eb9a696ab101818f59c79830c429b450418c8b6b2d0ebcf13e66c537a977c378bd9d31397c8ea32ba3faa0cdecb51424fd41c5e219

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c75edcd6220ff9dbf1a9c00068c376e6

            SHA1

            63ae0cd635562e2f2a4bd96d4bbf0af59f538a3d

            SHA256

            c43cbd98f3cdb6c85ca2cde5a2cb32bc160ae99b55f3f762b976f9be95b4e9f6

            SHA512

            fc68c0a03ae138120f8436eb9a696ab101818f59c79830c429b450418c8b6b2d0ebcf13e66c537a977c378bd9d31397c8ea32ba3faa0cdecb51424fd41c5e219

          • \Users\Admin\AppData\Local\Temp\nsyFD74.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyFD74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFD74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFD74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFD74.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c1a9a5db009eeeabbe25d4791981aab6

            SHA1

            a621d963675750540d77adbea8ec2fe021e905a2

            SHA256

            41b0b0f0780495c519be61a2631fbdfc203a3786c3dde675b7896778715a4daa

            SHA512

            6a7eeecc86771a79cd79b0c102b10d4f295c59bb3a8b550bc22734cd8ee54094170e845814fb9f1e704056fbf9f6b582b936a332c10bd9e593bb41ebf77fd98e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c1a9a5db009eeeabbe25d4791981aab6

            SHA1

            a621d963675750540d77adbea8ec2fe021e905a2

            SHA256

            41b0b0f0780495c519be61a2631fbdfc203a3786c3dde675b7896778715a4daa

            SHA512

            6a7eeecc86771a79cd79b0c102b10d4f295c59bb3a8b550bc22734cd8ee54094170e845814fb9f1e704056fbf9f6b582b936a332c10bd9e593bb41ebf77fd98e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c1a9a5db009eeeabbe25d4791981aab6

            SHA1

            a621d963675750540d77adbea8ec2fe021e905a2

            SHA256

            41b0b0f0780495c519be61a2631fbdfc203a3786c3dde675b7896778715a4daa

            SHA512

            6a7eeecc86771a79cd79b0c102b10d4f295c59bb3a8b550bc22734cd8ee54094170e845814fb9f1e704056fbf9f6b582b936a332c10bd9e593bb41ebf77fd98e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e6c8bf81997a8f09353395d9c0bb7c6b

            SHA1

            3353c1ac2b7901167db68541f2695c06788a55cd

            SHA256

            c44ad23e76135b7d92b2fe66f47fd0eef6582021ab2174ba9ffd01e80051325d

            SHA512

            604d91851b61bb888319e36006e0eb645656b65475767c82a32b15f525dc52e89e15b79a5a60353bd18d60200f0d04eba999110a7d8d8d9599584fb1a3583884

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            e6c8bf81997a8f09353395d9c0bb7c6b

            SHA1

            3353c1ac2b7901167db68541f2695c06788a55cd

            SHA256

            c44ad23e76135b7d92b2fe66f47fd0eef6582021ab2174ba9ffd01e80051325d

            SHA512

            604d91851b61bb888319e36006e0eb645656b65475767c82a32b15f525dc52e89e15b79a5a60353bd18d60200f0d04eba999110a7d8d8d9599584fb1a3583884

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            33de6c48635e8cc80e344a1e630b92cb

            SHA1

            e7bfa1085dc57feac3d294ebff9f026e70454658

            SHA256

            312f574ef09d78834b3b4422cf7be1d07ec0f98bde86eb609f69ff89b333f94f

            SHA512

            522afd8a85eeeeaf71c1fb855e74bd85a8326a7d3bc9110bbee90fa0664aa0ba1afd82bad654af90e572e879435e487a99055317a36a2e3e2b57c33c45854b0e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            77332eb3ad3021a25378d8752e570c7b

            SHA1

            6367739dce6cf6a7cc8c7ed29faf3f85e77b3072

            SHA256

            2bbc258f15584418b4cfbe8fe2535676fc663fa79a10567dfa46efa4b9df064e

            SHA512

            68eeae58dd4ffe48c89ee990291c1a9697d72534400855ee4d673d46f44a1b8476b816b5debd108484180f77da818b31e2174bfd198d1b0fe2da9fc437231329

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            c75edcd6220ff9dbf1a9c00068c376e6

            SHA1

            63ae0cd635562e2f2a4bd96d4bbf0af59f538a3d

            SHA256

            c43cbd98f3cdb6c85ca2cde5a2cb32bc160ae99b55f3f762b976f9be95b4e9f6

            SHA512

            fc68c0a03ae138120f8436eb9a696ab101818f59c79830c429b450418c8b6b2d0ebcf13e66c537a977c378bd9d31397c8ea32ba3faa0cdecb51424fd41c5e219

          • memory/280-80-0x0000000000000000-mapping.dmp

          • memory/360-75-0x0000000000000000-mapping.dmp

          • memory/692-61-0x0000000000000000-mapping.dmp

          • memory/772-57-0x0000000000000000-mapping.dmp

          • memory/824-63-0x0000000000000000-mapping.dmp

          • memory/1060-54-0x00000000760B1000-0x00000000760B3000-memory.dmp

            Filesize

            8KB

          • memory/1164-58-0x0000000000000000-mapping.dmp

          • memory/1472-79-0x0000000000000000-mapping.dmp

          • memory/1556-86-0x0000000000000000-mapping.dmp

          • memory/1676-69-0x0000000000000000-mapping.dmp

          • memory/1728-85-0x0000000000000000-mapping.dmp

          • memory/2024-60-0x0000000000000000-mapping.dmp