Analysis

  • max time kernel
    173s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:13

General

  • Target

    c55b0e2e30aa53dc2e9f9f346d1ca6ccbb9080227bbec9a298bf4cc19d72e19f.exe

  • Size

    603KB

  • MD5

    e5490a4c35293ae6017a08774eef5d9e

  • SHA1

    f054171de30255d32e8b188185f30e9e0ebd3550

  • SHA256

    c55b0e2e30aa53dc2e9f9f346d1ca6ccbb9080227bbec9a298bf4cc19d72e19f

  • SHA512

    17655567bf7cf029e8266bc8de67784e4e5c6763533518e1a143c4153da2990217eb8e9c60cbaee7ee4300eceec93c4572c279afd7f2cead7f010966de06a86c

  • SSDEEP

    12288:iIny5DYTQIrwDHBOEQuyGJ9jPoJoTl+tyx+TNiaJyJe7Y/di:EUTQgOHBOEpyGdTl+g+VJEet

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c55b0e2e30aa53dc2e9f9f346d1ca6ccbb9080227bbec9a298bf4cc19d72e19f.exe
    "C:\Users\Admin\AppData\Local\Temp\c55b0e2e30aa53dc2e9f9f346d1ca6ccbb9080227bbec9a298bf4cc19d72e19f.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:1120
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3656
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2520
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4616
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:444
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5104
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4896
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:888
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2800
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4176
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2012
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:2188
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1680

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsh24FF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6eba603ead229e404c4bd6c83ac99455

            SHA1

            f6ebafa236e040cb4eb9225f483c22d9a8aeda7d

            SHA256

            6f888fce2b60cbf210146aaeb43324bfdeba4344bd202edf7ab673ab7a381925

            SHA512

            22fb97d873d68e8fcbaedd59ce678011165c98a56e655be3fd514bc1b88ead3ab3e8fbc3f376e70b21ab79d193191e9c4e6b1bed06b9b10f8b488e1eff374510

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6eba603ead229e404c4bd6c83ac99455

            SHA1

            f6ebafa236e040cb4eb9225f483c22d9a8aeda7d

            SHA256

            6f888fce2b60cbf210146aaeb43324bfdeba4344bd202edf7ab673ab7a381925

            SHA512

            22fb97d873d68e8fcbaedd59ce678011165c98a56e655be3fd514bc1b88ead3ab3e8fbc3f376e70b21ab79d193191e9c4e6b1bed06b9b10f8b488e1eff374510

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6eba603ead229e404c4bd6c83ac99455

            SHA1

            f6ebafa236e040cb4eb9225f483c22d9a8aeda7d

            SHA256

            6f888fce2b60cbf210146aaeb43324bfdeba4344bd202edf7ab673ab7a381925

            SHA512

            22fb97d873d68e8fcbaedd59ce678011165c98a56e655be3fd514bc1b88ead3ab3e8fbc3f376e70b21ab79d193191e9c4e6b1bed06b9b10f8b488e1eff374510

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            6eba603ead229e404c4bd6c83ac99455

            SHA1

            f6ebafa236e040cb4eb9225f483c22d9a8aeda7d

            SHA256

            6f888fce2b60cbf210146aaeb43324bfdeba4344bd202edf7ab673ab7a381925

            SHA512

            22fb97d873d68e8fcbaedd59ce678011165c98a56e655be3fd514bc1b88ead3ab3e8fbc3f376e70b21ab79d193191e9c4e6b1bed06b9b10f8b488e1eff374510

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1053b5c3789fae9b22a349168940d0ff

            SHA1

            d0f9ee6fb8278cf3b61bd7145cb87c8b7743d58e

            SHA256

            e54c8bb39eaa286467500cb95c69106511b873a57d270e7b1bbb876ee71ece7d

            SHA512

            14990dfc4282e1932e1e9d1a4863e3b06e42aebcc97f2664c407ebfb1c7e26fc3b0309f52286b525d8376f29da72ff971206cd0cb606f9c90df235f261895208

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1053b5c3789fae9b22a349168940d0ff

            SHA1

            d0f9ee6fb8278cf3b61bd7145cb87c8b7743d58e

            SHA256

            e54c8bb39eaa286467500cb95c69106511b873a57d270e7b1bbb876ee71ece7d

            SHA512

            14990dfc4282e1932e1e9d1a4863e3b06e42aebcc97f2664c407ebfb1c7e26fc3b0309f52286b525d8376f29da72ff971206cd0cb606f9c90df235f261895208

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            1053b5c3789fae9b22a349168940d0ff

            SHA1

            d0f9ee6fb8278cf3b61bd7145cb87c8b7743d58e

            SHA256

            e54c8bb39eaa286467500cb95c69106511b873a57d270e7b1bbb876ee71ece7d

            SHA512

            14990dfc4282e1932e1e9d1a4863e3b06e42aebcc97f2664c407ebfb1c7e26fc3b0309f52286b525d8376f29da72ff971206cd0cb606f9c90df235f261895208

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            14ee20fa93ad4b03a61693395766d972

            SHA1

            e8a41e28413a6610923a3ae25008eadcac2886d9

            SHA256

            4543eb020c4d2cc3a1b791d710b4cec9b1f165fdcc70d07f7b89ed8d33c721ee

            SHA512

            6e8d44d0e18dbfe4fed5709e48878059f816af14b86ef97d64a19727d652918873003eb999c583c031706fa9d38cbcecdb68c5718c676d929a5cd6618ff28e45

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            14ee20fa93ad4b03a61693395766d972

            SHA1

            e8a41e28413a6610923a3ae25008eadcac2886d9

            SHA256

            4543eb020c4d2cc3a1b791d710b4cec9b1f165fdcc70d07f7b89ed8d33c721ee

            SHA512

            6e8d44d0e18dbfe4fed5709e48878059f816af14b86ef97d64a19727d652918873003eb999c583c031706fa9d38cbcecdb68c5718c676d929a5cd6618ff28e45

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bde21137f09e9ef1fd66e83677f8ce23

            SHA1

            67227fa178519877c8671a746ddf548319ac9f69

            SHA256

            98db5a1d2f75da3af9042c3430ad1f9f2e19ab965b8230fdb140eb18b45dfecf

            SHA512

            8ca5890291a7588597fef4e0a51c22b545282d9661db430645f37d8bfdeb5b4eef6c688dabfd0968fe40763bb60e3e286182f5d8638988a6986853b0919a3f90

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bde21137f09e9ef1fd66e83677f8ce23

            SHA1

            67227fa178519877c8671a746ddf548319ac9f69

            SHA256

            98db5a1d2f75da3af9042c3430ad1f9f2e19ab965b8230fdb140eb18b45dfecf

            SHA512

            8ca5890291a7588597fef4e0a51c22b545282d9661db430645f37d8bfdeb5b4eef6c688dabfd0968fe40763bb60e3e286182f5d8638988a6986853b0919a3f90

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bde21137f09e9ef1fd66e83677f8ce23

            SHA1

            67227fa178519877c8671a746ddf548319ac9f69

            SHA256

            98db5a1d2f75da3af9042c3430ad1f9f2e19ab965b8230fdb140eb18b45dfecf

            SHA512

            8ca5890291a7588597fef4e0a51c22b545282d9661db430645f37d8bfdeb5b4eef6c688dabfd0968fe40763bb60e3e286182f5d8638988a6986853b0919a3f90

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            505859c460903fa061ab49fb57e0d593

            SHA1

            c364f410cc6033a1638520720c8f5a0da3b65e46

            SHA256

            e48011f3e0d842cd512e3911112dc51e1eaa7747ba8aeff4a142d151a6206119

            SHA512

            c621bbb72a493b2dd1fab7914a7246a02832de3549fce583e816744a07e3dfa18f08857c829b26abb07b0c3bc8eedd3502cfcb128a635ec5b0577f0d76f7da1a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            505859c460903fa061ab49fb57e0d593

            SHA1

            c364f410cc6033a1638520720c8f5a0da3b65e46

            SHA256

            e48011f3e0d842cd512e3911112dc51e1eaa7747ba8aeff4a142d151a6206119

            SHA512

            c621bbb72a493b2dd1fab7914a7246a02832de3549fce583e816744a07e3dfa18f08857c829b26abb07b0c3bc8eedd3502cfcb128a635ec5b0577f0d76f7da1a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            505859c460903fa061ab49fb57e0d593

            SHA1

            c364f410cc6033a1638520720c8f5a0da3b65e46

            SHA256

            e48011f3e0d842cd512e3911112dc51e1eaa7747ba8aeff4a142d151a6206119

            SHA512

            c621bbb72a493b2dd1fab7914a7246a02832de3549fce583e816744a07e3dfa18f08857c829b26abb07b0c3bc8eedd3502cfcb128a635ec5b0577f0d76f7da1a

          • memory/444-142-0x0000000000000000-mapping.dmp

          • memory/888-158-0x0000000000000000-mapping.dmp

          • memory/1120-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1120-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2012-166-0x0000000000000000-mapping.dmp

          • memory/2520-140-0x0000000000000000-mapping.dmp

          • memory/2800-159-0x0000000000000000-mapping.dmp

          • memory/2996-136-0x0000000000000000-mapping.dmp

          • memory/3656-137-0x0000000000000000-mapping.dmp

          • memory/4176-165-0x0000000000000000-mapping.dmp

          • memory/4616-141-0x0000000000000000-mapping.dmp

          • memory/4896-153-0x0000000000000000-mapping.dmp

          • memory/5104-147-0x0000000000000000-mapping.dmp