Analysis

  • max time kernel
    83s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    321baa5f975612ce78064fe192a7cb3c9fdfbcc91368fc40597ad30806ccea5a.exe

  • Size

    602KB

  • MD5

    91101bb4e804d262170053a1336c6468

  • SHA1

    0de0f15de2048e2790a4fbe24600bdb34b793025

  • SHA256

    321baa5f975612ce78064fe192a7cb3c9fdfbcc91368fc40597ad30806ccea5a

  • SHA512

    a317db31bcdb821b68224ae870c1cf96d682c53cb15bc9714530d5fccc508ec4479420e985ab1791e787d8b502f183f02107e54efe658197a55fbae713695919

  • SSDEEP

    12288:BIny5DYTgFQGhdMbBY+JxZcNNzP0ekYkNQ26U75beHp:9UTgFQLbm+KNNzcAM75bgp

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\321baa5f975612ce78064fe192a7cb3c9fdfbcc91368fc40597ad30806ccea5a.exe
    "C:\Users\Admin\AppData\Local\Temp\321baa5f975612ce78064fe192a7cb3c9fdfbcc91368fc40597ad30806ccea5a.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:956
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:288
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:516
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:668
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1176
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:900
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1788
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:796
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2012
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:428
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1172
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1004
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:808
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1916

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            26fa945303acb67d5193c38fdf094987

            SHA1

            7e5b62948550303b72c11873fe24cea7a18a085e

            SHA256

            8a4a59eb65fec34759a983420eaaa9220fb8b2c383bb1979aeba3ed8e05ca707

            SHA512

            d61364a760f5380292f400edeb5d117af0422607c6b270424f9c07b5d23b05796936d34b69b991de61edfbaf6033de3c42d1f8949aa7082933258e36d2da4e76

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            42276f6dc029bf7c45b36f2dcef26c67

            SHA1

            7dfefedd064e16b603272f66da1a71f43494bef4

            SHA256

            922376637dc51560bce7f574c53eadc338dcba16c8b2b4ccd626261d8566ed88

            SHA512

            ba11b8f0b867b2270e6e05d08487edd5594b1c663b20382e595c7eb83f8c361da9699aaf5d1b63b8744af2b2473fed17a379ea62feda6fb5157c35af53504350

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            85bc659482203721673505f126adacb7

            SHA1

            d744389ce2be14cf941a979fd5965080ad850da6

            SHA256

            ccfd185315197ebd59fe5581d916ff359715332b44b1b8998fdcaa06c1cddfb9

            SHA512

            19c6258660fa3ba4833c8373a21e23ee80081ea3de3902b2ce14708257b12396bcf1e5d427d5af1c29a0f1b1011e16678fb480d263b5b87aee78c9886d52eeb3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9d3f1baacbe71ed0dc53e9245d033fc3

            SHA1

            20f556a4bf70dde61bf416ab3fa7a870591c7f89

            SHA256

            1a84babc9cad2c73ad6807ca31a8644f01bfc943c1409b236e740260f19f075d

            SHA512

            ed52743b824f6e00ac72efbd6ac1993f453fe07d085e9a3041044d396926c26f39903ef28954fb5dd958c79b087029556c506106d436190f464c99be14552926

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9d3f1baacbe71ed0dc53e9245d033fc3

            SHA1

            20f556a4bf70dde61bf416ab3fa7a870591c7f89

            SHA256

            1a84babc9cad2c73ad6807ca31a8644f01bfc943c1409b236e740260f19f075d

            SHA512

            ed52743b824f6e00ac72efbd6ac1993f453fe07d085e9a3041044d396926c26f39903ef28954fb5dd958c79b087029556c506106d436190f464c99be14552926

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d526bd06252a7f5189c1dddaf1d89b5d

            SHA1

            aea87e417ed6783d180b19ecb6983a8fd1a74d9b

            SHA256

            f4c9f773c0ab0c73073648878057622ae872c8c6700a57471d2267523da19b31

            SHA512

            39ccb1e46b9c5b0510485d8912300df0ad46c47aacb713eed08b16a7621359d98ed93454c5f59a92b502f1310dc9b250146f8402d3d98fd8527916cc2037d567

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d526bd06252a7f5189c1dddaf1d89b5d

            SHA1

            aea87e417ed6783d180b19ecb6983a8fd1a74d9b

            SHA256

            f4c9f773c0ab0c73073648878057622ae872c8c6700a57471d2267523da19b31

            SHA512

            39ccb1e46b9c5b0510485d8912300df0ad46c47aacb713eed08b16a7621359d98ed93454c5f59a92b502f1310dc9b250146f8402d3d98fd8527916cc2037d567

          • \Users\Admin\AppData\Local\Temp\nsoA882.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoA882.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoA882.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoA882.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoA882.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            26fa945303acb67d5193c38fdf094987

            SHA1

            7e5b62948550303b72c11873fe24cea7a18a085e

            SHA256

            8a4a59eb65fec34759a983420eaaa9220fb8b2c383bb1979aeba3ed8e05ca707

            SHA512

            d61364a760f5380292f400edeb5d117af0422607c6b270424f9c07b5d23b05796936d34b69b991de61edfbaf6033de3c42d1f8949aa7082933258e36d2da4e76

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            26fa945303acb67d5193c38fdf094987

            SHA1

            7e5b62948550303b72c11873fe24cea7a18a085e

            SHA256

            8a4a59eb65fec34759a983420eaaa9220fb8b2c383bb1979aeba3ed8e05ca707

            SHA512

            d61364a760f5380292f400edeb5d117af0422607c6b270424f9c07b5d23b05796936d34b69b991de61edfbaf6033de3c42d1f8949aa7082933258e36d2da4e76

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            26fa945303acb67d5193c38fdf094987

            SHA1

            7e5b62948550303b72c11873fe24cea7a18a085e

            SHA256

            8a4a59eb65fec34759a983420eaaa9220fb8b2c383bb1979aeba3ed8e05ca707

            SHA512

            d61364a760f5380292f400edeb5d117af0422607c6b270424f9c07b5d23b05796936d34b69b991de61edfbaf6033de3c42d1f8949aa7082933258e36d2da4e76

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            42276f6dc029bf7c45b36f2dcef26c67

            SHA1

            7dfefedd064e16b603272f66da1a71f43494bef4

            SHA256

            922376637dc51560bce7f574c53eadc338dcba16c8b2b4ccd626261d8566ed88

            SHA512

            ba11b8f0b867b2270e6e05d08487edd5594b1c663b20382e595c7eb83f8c361da9699aaf5d1b63b8744af2b2473fed17a379ea62feda6fb5157c35af53504350

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            42276f6dc029bf7c45b36f2dcef26c67

            SHA1

            7dfefedd064e16b603272f66da1a71f43494bef4

            SHA256

            922376637dc51560bce7f574c53eadc338dcba16c8b2b4ccd626261d8566ed88

            SHA512

            ba11b8f0b867b2270e6e05d08487edd5594b1c663b20382e595c7eb83f8c361da9699aaf5d1b63b8744af2b2473fed17a379ea62feda6fb5157c35af53504350

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            85bc659482203721673505f126adacb7

            SHA1

            d744389ce2be14cf941a979fd5965080ad850da6

            SHA256

            ccfd185315197ebd59fe5581d916ff359715332b44b1b8998fdcaa06c1cddfb9

            SHA512

            19c6258660fa3ba4833c8373a21e23ee80081ea3de3902b2ce14708257b12396bcf1e5d427d5af1c29a0f1b1011e16678fb480d263b5b87aee78c9886d52eeb3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9d3f1baacbe71ed0dc53e9245d033fc3

            SHA1

            20f556a4bf70dde61bf416ab3fa7a870591c7f89

            SHA256

            1a84babc9cad2c73ad6807ca31a8644f01bfc943c1409b236e740260f19f075d

            SHA512

            ed52743b824f6e00ac72efbd6ac1993f453fe07d085e9a3041044d396926c26f39903ef28954fb5dd958c79b087029556c506106d436190f464c99be14552926

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            d526bd06252a7f5189c1dddaf1d89b5d

            SHA1

            aea87e417ed6783d180b19ecb6983a8fd1a74d9b

            SHA256

            f4c9f773c0ab0c73073648878057622ae872c8c6700a57471d2267523da19b31

            SHA512

            39ccb1e46b9c5b0510485d8912300df0ad46c47aacb713eed08b16a7621359d98ed93454c5f59a92b502f1310dc9b250146f8402d3d98fd8527916cc2037d567

          • memory/288-57-0x0000000000000000-mapping.dmp

          • memory/428-82-0x0000000000000000-mapping.dmp

          • memory/516-58-0x0000000000000000-mapping.dmp

          • memory/668-60-0x0000000000000000-mapping.dmp

          • memory/796-77-0x0000000000000000-mapping.dmp

          • memory/900-64-0x0000000000000000-mapping.dmp

          • memory/956-54-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

            Filesize

            8KB

          • memory/956-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/956-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/956-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1004-88-0x0000000000000000-mapping.dmp

          • memory/1172-87-0x0000000000000000-mapping.dmp

          • memory/1176-61-0x0000000000000000-mapping.dmp

          • memory/1788-71-0x0000000000000000-mapping.dmp

          • memory/2012-81-0x0000000000000000-mapping.dmp