Analysis

  • max time kernel
    35s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:31

General

  • Target

    20aca8e886e6510ccd068ebb3621c9612ec08e7aaeb74acb9aa9d4822d87d4b6.exe

  • Size

    602KB

  • MD5

    014558b3900dc201845b76755db46843

  • SHA1

    b7b15cfd38f8a4fcf7499e45098246b0b4929158

  • SHA256

    20aca8e886e6510ccd068ebb3621c9612ec08e7aaeb74acb9aa9d4822d87d4b6

  • SHA512

    724176414fb69d6403dc47d7d969943ab6ad2a284bb05ca12d9c7ad595063a8348f80d63b774f85842d149f1814ac8ab4fd2a30caba8f85266784c130b2a4bff

  • SSDEEP

    12288:VIny5DYTjcDfOUGQKesWXqw6g55Q7tcc:hUTjchGQKeNXL6jtcc

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\20aca8e886e6510ccd068ebb3621c9612ec08e7aaeb74acb9aa9d4822d87d4b6.exe
    "C:\Users\Admin\AppData\Local\Temp\20aca8e886e6510ccd068ebb3621c9612ec08e7aaeb74acb9aa9d4822d87d4b6.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:1832
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:988
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:336
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1100
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:452
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1492
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1368
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1616
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1692
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1556
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1272
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1996
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1020
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1768

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8145175a008e6e5337ebec68fa35bf59

            SHA1

            b86e2b5da63621d9af82f753bbd2294e66b709a9

            SHA256

            9a7b463ceee62099760eac576ee0a34075d8292e1cc155d2a4a61cbbc734caf1

            SHA512

            64910fc5e629b594492dff83f494a5515b3c5010479c62149ed698b643ac6ff38133a23c2044f3ea3310eb783a3b049fca944a6e0399cbefac6e83545032e2ae

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a75f82bc7f1e509671371e0628ad9275

            SHA1

            35d84d1ce74b933152910d429cbc3636154ab09e

            SHA256

            d0713ced083951a18cf5877d453b48a1c9ddd017e83c2bb20df2a85fa0d4a6c7

            SHA512

            9a4b5b896b3159df50ffc2da6a2518f941fe29752e8a952beed561078cf4be08cc6199a6d9e2271bb08b0ba7962c9dc969081961b61e451c449b0831bae82e7a

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            115200470f68cacd24ed875b4b15aa99

            SHA1

            b6ba9713e26673fafc0acf40940597a3092331f3

            SHA256

            4aca4d8b64c28f143bd537706a5ceeeb94f3e093eae0ab7e5a9ea5c55297a088

            SHA512

            5bfb02ac9ed21bd8462302991ec648889be2074569ac528b9d7b335dc6dd0b27af0f9dd1afb54e609104b7f7be5463c87249621c5444fb4b8379c9848ee226c9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            60a800571e051bc24ba87dab07fb3e01

            SHA1

            6f1ee1e2ec0f3c6290f21ada1a690abb8b9dc73e

            SHA256

            8eb86aff873b47c03751245e773278e1fa98b58459469cebd9521d7574d51626

            SHA512

            330a35bb7195edc98477ccc747e290cf5a2b426bec807b1c03a8a651296d5809e7623d2fd63ac65332a30d285c5bbf9bf59603951d27075699648560dc8b96c0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            60a800571e051bc24ba87dab07fb3e01

            SHA1

            6f1ee1e2ec0f3c6290f21ada1a690abb8b9dc73e

            SHA256

            8eb86aff873b47c03751245e773278e1fa98b58459469cebd9521d7574d51626

            SHA512

            330a35bb7195edc98477ccc747e290cf5a2b426bec807b1c03a8a651296d5809e7623d2fd63ac65332a30d285c5bbf9bf59603951d27075699648560dc8b96c0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b9505739221d473f15218823c545a359

            SHA1

            9624c41888acb2b009d7e8f34b2bbcd65ac29dd9

            SHA256

            0f7b06acfad17c056f0ea637cc927a0550e0007ace0c8bbb82bc54ae576b52ad

            SHA512

            fc0d0fe36d8a5149a1b290893a0e732ead0331000f296e6a31a1498a8b09f3f13da7429cd784ef9ca68cf1964f079581fb7c7e4972530604a4c1e8e35e31a3b0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b9505739221d473f15218823c545a359

            SHA1

            9624c41888acb2b009d7e8f34b2bbcd65ac29dd9

            SHA256

            0f7b06acfad17c056f0ea637cc927a0550e0007ace0c8bbb82bc54ae576b52ad

            SHA512

            fc0d0fe36d8a5149a1b290893a0e732ead0331000f296e6a31a1498a8b09f3f13da7429cd784ef9ca68cf1964f079581fb7c7e4972530604a4c1e8e35e31a3b0

          • \Users\Admin\AppData\Local\Temp\nsyCA44.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyCA44.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyCA44.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyCA44.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyCA44.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8145175a008e6e5337ebec68fa35bf59

            SHA1

            b86e2b5da63621d9af82f753bbd2294e66b709a9

            SHA256

            9a7b463ceee62099760eac576ee0a34075d8292e1cc155d2a4a61cbbc734caf1

            SHA512

            64910fc5e629b594492dff83f494a5515b3c5010479c62149ed698b643ac6ff38133a23c2044f3ea3310eb783a3b049fca944a6e0399cbefac6e83545032e2ae

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8145175a008e6e5337ebec68fa35bf59

            SHA1

            b86e2b5da63621d9af82f753bbd2294e66b709a9

            SHA256

            9a7b463ceee62099760eac576ee0a34075d8292e1cc155d2a4a61cbbc734caf1

            SHA512

            64910fc5e629b594492dff83f494a5515b3c5010479c62149ed698b643ac6ff38133a23c2044f3ea3310eb783a3b049fca944a6e0399cbefac6e83545032e2ae

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8145175a008e6e5337ebec68fa35bf59

            SHA1

            b86e2b5da63621d9af82f753bbd2294e66b709a9

            SHA256

            9a7b463ceee62099760eac576ee0a34075d8292e1cc155d2a4a61cbbc734caf1

            SHA512

            64910fc5e629b594492dff83f494a5515b3c5010479c62149ed698b643ac6ff38133a23c2044f3ea3310eb783a3b049fca944a6e0399cbefac6e83545032e2ae

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a75f82bc7f1e509671371e0628ad9275

            SHA1

            35d84d1ce74b933152910d429cbc3636154ab09e

            SHA256

            d0713ced083951a18cf5877d453b48a1c9ddd017e83c2bb20df2a85fa0d4a6c7

            SHA512

            9a4b5b896b3159df50ffc2da6a2518f941fe29752e8a952beed561078cf4be08cc6199a6d9e2271bb08b0ba7962c9dc969081961b61e451c449b0831bae82e7a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a75f82bc7f1e509671371e0628ad9275

            SHA1

            35d84d1ce74b933152910d429cbc3636154ab09e

            SHA256

            d0713ced083951a18cf5877d453b48a1c9ddd017e83c2bb20df2a85fa0d4a6c7

            SHA512

            9a4b5b896b3159df50ffc2da6a2518f941fe29752e8a952beed561078cf4be08cc6199a6d9e2271bb08b0ba7962c9dc969081961b61e451c449b0831bae82e7a

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            115200470f68cacd24ed875b4b15aa99

            SHA1

            b6ba9713e26673fafc0acf40940597a3092331f3

            SHA256

            4aca4d8b64c28f143bd537706a5ceeeb94f3e093eae0ab7e5a9ea5c55297a088

            SHA512

            5bfb02ac9ed21bd8462302991ec648889be2074569ac528b9d7b335dc6dd0b27af0f9dd1afb54e609104b7f7be5463c87249621c5444fb4b8379c9848ee226c9

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            60a800571e051bc24ba87dab07fb3e01

            SHA1

            6f1ee1e2ec0f3c6290f21ada1a690abb8b9dc73e

            SHA256

            8eb86aff873b47c03751245e773278e1fa98b58459469cebd9521d7574d51626

            SHA512

            330a35bb7195edc98477ccc747e290cf5a2b426bec807b1c03a8a651296d5809e7623d2fd63ac65332a30d285c5bbf9bf59603951d27075699648560dc8b96c0

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b9505739221d473f15218823c545a359

            SHA1

            9624c41888acb2b009d7e8f34b2bbcd65ac29dd9

            SHA256

            0f7b06acfad17c056f0ea637cc927a0550e0007ace0c8bbb82bc54ae576b52ad

            SHA512

            fc0d0fe36d8a5149a1b290893a0e732ead0331000f296e6a31a1498a8b09f3f13da7429cd784ef9ca68cf1964f079581fb7c7e4972530604a4c1e8e35e31a3b0

          • memory/336-58-0x0000000000000000-mapping.dmp

          • memory/452-62-0x0000000000000000-mapping.dmp

          • memory/988-57-0x0000000000000000-mapping.dmp

          • memory/1100-61-0x0000000000000000-mapping.dmp

          • memory/1272-87-0x0000000000000000-mapping.dmp

          • memory/1368-70-0x0000000000000000-mapping.dmp

          • memory/1492-64-0x0000000000000000-mapping.dmp

          • memory/1556-82-0x0000000000000000-mapping.dmp

          • memory/1616-76-0x0000000000000000-mapping.dmp

          • memory/1692-81-0x0000000000000000-mapping.dmp

          • memory/1832-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1832-54-0x0000000074E01000-0x0000000074E03000-memory.dmp

            Filesize

            8KB

          • memory/1832-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1832-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1996-88-0x0000000000000000-mapping.dmp