Analysis

  • max time kernel
    63s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23/11/2022, 23:40

General

  • Target

    1c89afb01db0518a1ad61bb7c2c2c3b94224b10fbd64efeeacccc3f519b9fff0.exe

  • Size

    561KB

  • MD5

    1c1d9bd12b1b2bea137b77b44fea10bc

  • SHA1

    cb7c2627d85b65c9bfe37216a26315c87680729f

  • SHA256

    1c89afb01db0518a1ad61bb7c2c2c3b94224b10fbd64efeeacccc3f519b9fff0

  • SHA512

    ac4b26e0f91e8742c9f53b300ce6d3157771d9d82e135ae7f962b1b97ea8e237d416efc1ce7e014a98b994933d7e402db0cd125a8805997373328443d4fd63b1

  • SSDEEP

    12288:6PRYzObfnVXgBtw9JEdz4rUjNhERP3sLVmi0C4i:nzCfVXKtw98z8UjIRP3sLMi

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\1c89afb01db0518a1ad61bb7c2c2c3b94224b10fbd64efeeacccc3f519b9fff0.exe
    "C:\Users\Admin\AppData\Local\Temp\1c89afb01db0518a1ad61bb7c2c2c3b94224b10fbd64efeeacccc3f519b9fff0.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:1104
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1468
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1044
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:564
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:468
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1508
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:760
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1032
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:360
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1636
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1944
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:696
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1856
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2008

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  84965dfc5f9a34ba87078afeaa0c46e1

                  SHA1

                  c90fc598d24f4a9a129402a7d414f1669244145c

                  SHA256

                  b0ab54525e1bb4d1651276313140a23b542cf35a7652aead5cbbc6b3ce82073c

                  SHA512

                  292ce540443d1f99988de9f001e332f9226af8d124c00ce25f5dce1663c8a3b303ee84e4398d7cd8fcb498dc723de1749c394b55c32be0276a57efdb898d7d73

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  0b6dc3f1f91fb7978e10ae15bc0c3dab

                  SHA1

                  426b7349ff17bca36f31c28743ca2f7355974125

                  SHA256

                  6077850f619d08dc41f296003dbd8fb6ad155380771c034d0e6c0b5858d08c63

                  SHA512

                  e85d58f5e2331692bf42e1e43c70328b549ebad1c2f36b6a90b08ce17ca3ae61414e2da7c66ce5968d003871a848b912e248690bd1f7431b9ca48f5655d5f1e6

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  80039c776e6ad2d4dc821e81bf1c187e

                  SHA1

                  be5840fee77f4af2f1efdf11debb230c8b272793

                  SHA256

                  26e42539ea2b37885cd7507776120ba24792d4f1a2fbec4bde69a22fdfc5c454

                  SHA512

                  faec3228da265fe39bda23898acf74c8aecb87aa976d903e10832227c6722fea0f179b87c066ba037924acc6dbe405d90336af782e077a2fb215352212e8dbba

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  ab88d56ccf71606018acdb45e4d811f8

                  SHA1

                  a170ffab252dcec2b4d2386db00c7caa2859d995

                  SHA256

                  c0169fbb963d1f307516ded69d5c5cb737a5fa935f6c4b85f09de30f68aa302d

                  SHA512

                  ec819200d70d0abbaa4f1de6d68c7dc50cab4df8e47c2adbe04a0e277b882add18899df57d398c0e4f4263341f3f0d736b241f9e1231ace29d339f80c77df9ac

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  ab88d56ccf71606018acdb45e4d811f8

                  SHA1

                  a170ffab252dcec2b4d2386db00c7caa2859d995

                  SHA256

                  c0169fbb963d1f307516ded69d5c5cb737a5fa935f6c4b85f09de30f68aa302d

                  SHA512

                  ec819200d70d0abbaa4f1de6d68c7dc50cab4df8e47c2adbe04a0e277b882add18899df57d398c0e4f4263341f3f0d736b241f9e1231ace29d339f80c77df9ac

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  7d608620055d31ea090ce4c3c5747c19

                  SHA1

                  20945b937b60d734bf0225d6a637b752183ea365

                  SHA256

                  d98e2bc7a48c95e34aae48ac7f1edb56c87fdda14f1c2b253ace2211520ccb87

                  SHA512

                  59734dd9a855c2c578ef15aa91b73390ae9e7482e36a114937db84ef774a02575eae8cfecec4b069d09c93850a7a781d3c0928e3fe836daceebf0e028a7a0268

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  7d608620055d31ea090ce4c3c5747c19

                  SHA1

                  20945b937b60d734bf0225d6a637b752183ea365

                  SHA256

                  d98e2bc7a48c95e34aae48ac7f1edb56c87fdda14f1c2b253ace2211520ccb87

                  SHA512

                  59734dd9a855c2c578ef15aa91b73390ae9e7482e36a114937db84ef774a02575eae8cfecec4b069d09c93850a7a781d3c0928e3fe836daceebf0e028a7a0268

                • \Users\Admin\AppData\Local\Temp\nsy9A6E.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nsy9A6E.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsy9A6E.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsy9A6E.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsy9A6E.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  84965dfc5f9a34ba87078afeaa0c46e1

                  SHA1

                  c90fc598d24f4a9a129402a7d414f1669244145c

                  SHA256

                  b0ab54525e1bb4d1651276313140a23b542cf35a7652aead5cbbc6b3ce82073c

                  SHA512

                  292ce540443d1f99988de9f001e332f9226af8d124c00ce25f5dce1663c8a3b303ee84e4398d7cd8fcb498dc723de1749c394b55c32be0276a57efdb898d7d73

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  84965dfc5f9a34ba87078afeaa0c46e1

                  SHA1

                  c90fc598d24f4a9a129402a7d414f1669244145c

                  SHA256

                  b0ab54525e1bb4d1651276313140a23b542cf35a7652aead5cbbc6b3ce82073c

                  SHA512

                  292ce540443d1f99988de9f001e332f9226af8d124c00ce25f5dce1663c8a3b303ee84e4398d7cd8fcb498dc723de1749c394b55c32be0276a57efdb898d7d73

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  84965dfc5f9a34ba87078afeaa0c46e1

                  SHA1

                  c90fc598d24f4a9a129402a7d414f1669244145c

                  SHA256

                  b0ab54525e1bb4d1651276313140a23b542cf35a7652aead5cbbc6b3ce82073c

                  SHA512

                  292ce540443d1f99988de9f001e332f9226af8d124c00ce25f5dce1663c8a3b303ee84e4398d7cd8fcb498dc723de1749c394b55c32be0276a57efdb898d7d73

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  0b6dc3f1f91fb7978e10ae15bc0c3dab

                  SHA1

                  426b7349ff17bca36f31c28743ca2f7355974125

                  SHA256

                  6077850f619d08dc41f296003dbd8fb6ad155380771c034d0e6c0b5858d08c63

                  SHA512

                  e85d58f5e2331692bf42e1e43c70328b549ebad1c2f36b6a90b08ce17ca3ae61414e2da7c66ce5968d003871a848b912e248690bd1f7431b9ca48f5655d5f1e6

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  0b6dc3f1f91fb7978e10ae15bc0c3dab

                  SHA1

                  426b7349ff17bca36f31c28743ca2f7355974125

                  SHA256

                  6077850f619d08dc41f296003dbd8fb6ad155380771c034d0e6c0b5858d08c63

                  SHA512

                  e85d58f5e2331692bf42e1e43c70328b549ebad1c2f36b6a90b08ce17ca3ae61414e2da7c66ce5968d003871a848b912e248690bd1f7431b9ca48f5655d5f1e6

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  80039c776e6ad2d4dc821e81bf1c187e

                  SHA1

                  be5840fee77f4af2f1efdf11debb230c8b272793

                  SHA256

                  26e42539ea2b37885cd7507776120ba24792d4f1a2fbec4bde69a22fdfc5c454

                  SHA512

                  faec3228da265fe39bda23898acf74c8aecb87aa976d903e10832227c6722fea0f179b87c066ba037924acc6dbe405d90336af782e077a2fb215352212e8dbba

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  ab88d56ccf71606018acdb45e4d811f8

                  SHA1

                  a170ffab252dcec2b4d2386db00c7caa2859d995

                  SHA256

                  c0169fbb963d1f307516ded69d5c5cb737a5fa935f6c4b85f09de30f68aa302d

                  SHA512

                  ec819200d70d0abbaa4f1de6d68c7dc50cab4df8e47c2adbe04a0e277b882add18899df57d398c0e4f4263341f3f0d736b241f9e1231ace29d339f80c77df9ac

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  7d608620055d31ea090ce4c3c5747c19

                  SHA1

                  20945b937b60d734bf0225d6a637b752183ea365

                  SHA256

                  d98e2bc7a48c95e34aae48ac7f1edb56c87fdda14f1c2b253ace2211520ccb87

                  SHA512

                  59734dd9a855c2c578ef15aa91b73390ae9e7482e36a114937db84ef774a02575eae8cfecec4b069d09c93850a7a781d3c0928e3fe836daceebf0e028a7a0268

                • memory/1104-54-0x0000000074D81000-0x0000000074D83000-memory.dmp

                  Filesize

                  8KB

                • memory/1104-69-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1104-55-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1104-91-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB