Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a5cb49a8e2835f1f525d2b688197ecb23c7c8a3035ed2441f841fcacd4adde22.exe

  • Size

    602KB

  • MD5

    2dcf63b8e4891166aba2620fbe254551

  • SHA1

    b3c15f78a761bc70ff30cfb1156aca8f0a00d797

  • SHA256

    a5cb49a8e2835f1f525d2b688197ecb23c7c8a3035ed2441f841fcacd4adde22

  • SHA512

    589082f4f0cc31223a13ec79b1a88ed1d7019730ada69b932e4a9ce4dbbd6f05f647eba34d6ec8f8e078f048ca442f6f18a55cd6a9f95bc5b5613ee2d67d9831

  • SSDEEP

    12288:EIny5DYTjWL+RR+Zp9lMK4kRSfPiWxuLD77j961d6/08p:iUTjQkcCkcUP9614n

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\a5cb49a8e2835f1f525d2b688197ecb23c7c8a3035ed2441f841fcacd4adde22.exe
    "C:\Users\Admin\AppData\Local\Temp\a5cb49a8e2835f1f525d2b688197ecb23c7c8a3035ed2441f841fcacd4adde22.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:1960
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1372
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1088
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:856
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1444
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1112
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1988
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1160
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1588
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1480
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:880

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            27c95e47c6cd162ab9e11ef3898ede6d

            SHA1

            2d66969833045a8551b0d53eabd4a85bbd15fbd6

            SHA256

            0305d7805aedf7a2c0b83a09bf8963ff1a0deb7af1232d2113f95335b8f76acd

            SHA512

            288cb2e34ec94dde6bb9ba419172e1358a88ad0cf7b065057c4895dc5852f5e7d0b1e818666c906d70feb2a5240ccfbfef3b0226af034fc8c2e84203dbc85262

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4190e7f8b855180d973bd1814936593b

            SHA1

            fbed27e33b48d337ca31c50da3a06d4feb145f59

            SHA256

            6155be77276246b92a0da6797ad3294cf847d0d16f75cc42af302dd231040d35

            SHA512

            447bfca9c564e371655f6d2c500e63454039b07a083bbe114ed7dd87ecfcd9f474fb10752ec885185fb6f286914cc2bf12a2d140d332c81f67847f9c6bb57380

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f33afeded94ae3448218aeadf2189909

            SHA1

            b48c8ecdc3d0425918ee164b9804eab36d92d137

            SHA256

            0d97a2d8fc56cc3bcc84d81708af2b779a837c115072fb4f482f83081c26c6da

            SHA512

            2aba903838b161104b5135de6422e07503d6baa291f1a6321558a552520468321de7faf2e4b106c29b201a6af1d79ed7345aa3e961fe051b91319fa87426e438

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fc2324b9904281767e2481b147c7d213

            SHA1

            16804c206fc8ce270bbd658f6d97e4c5ba643d3a

            SHA256

            daf4d113d54042936cb590f00448cb2fb3155c7a9a72e0fad8d668aac5c54ccf

            SHA512

            e5ca8a643d549196908e7804ab875a1ce884ecacd493a60186f16b26825ffe6d74695f9ea1a61e1a9dc7e876c29c98ce49f966c858037974d63520cb606bc26a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fc2324b9904281767e2481b147c7d213

            SHA1

            16804c206fc8ce270bbd658f6d97e4c5ba643d3a

            SHA256

            daf4d113d54042936cb590f00448cb2fb3155c7a9a72e0fad8d668aac5c54ccf

            SHA512

            e5ca8a643d549196908e7804ab875a1ce884ecacd493a60186f16b26825ffe6d74695f9ea1a61e1a9dc7e876c29c98ce49f966c858037974d63520cb606bc26a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7760883a355f4bb0ea58b2fa6eb08bde

            SHA1

            5d63c9a9c0273418bf74a04905618b410c55459c

            SHA256

            9bae266eccc694159467b23c150806008021818d7800f5be877add558c5db4e7

            SHA512

            e05159e1d173ae1544bd8199da4b3fe9918ed122ab5ae04cf04c02da5e761a4a4e577dd844dfe32592b1093a48be10ec4c82d4ccaaa27cea2ee99e83f9641124

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7760883a355f4bb0ea58b2fa6eb08bde

            SHA1

            5d63c9a9c0273418bf74a04905618b410c55459c

            SHA256

            9bae266eccc694159467b23c150806008021818d7800f5be877add558c5db4e7

            SHA512

            e05159e1d173ae1544bd8199da4b3fe9918ed122ab5ae04cf04c02da5e761a4a4e577dd844dfe32592b1093a48be10ec4c82d4ccaaa27cea2ee99e83f9641124

          • \Users\Admin\AppData\Local\Temp\nso7A2.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso7A2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso7A2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso7A2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso7A2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            27c95e47c6cd162ab9e11ef3898ede6d

            SHA1

            2d66969833045a8551b0d53eabd4a85bbd15fbd6

            SHA256

            0305d7805aedf7a2c0b83a09bf8963ff1a0deb7af1232d2113f95335b8f76acd

            SHA512

            288cb2e34ec94dde6bb9ba419172e1358a88ad0cf7b065057c4895dc5852f5e7d0b1e818666c906d70feb2a5240ccfbfef3b0226af034fc8c2e84203dbc85262

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            27c95e47c6cd162ab9e11ef3898ede6d

            SHA1

            2d66969833045a8551b0d53eabd4a85bbd15fbd6

            SHA256

            0305d7805aedf7a2c0b83a09bf8963ff1a0deb7af1232d2113f95335b8f76acd

            SHA512

            288cb2e34ec94dde6bb9ba419172e1358a88ad0cf7b065057c4895dc5852f5e7d0b1e818666c906d70feb2a5240ccfbfef3b0226af034fc8c2e84203dbc85262

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            27c95e47c6cd162ab9e11ef3898ede6d

            SHA1

            2d66969833045a8551b0d53eabd4a85bbd15fbd6

            SHA256

            0305d7805aedf7a2c0b83a09bf8963ff1a0deb7af1232d2113f95335b8f76acd

            SHA512

            288cb2e34ec94dde6bb9ba419172e1358a88ad0cf7b065057c4895dc5852f5e7d0b1e818666c906d70feb2a5240ccfbfef3b0226af034fc8c2e84203dbc85262

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4190e7f8b855180d973bd1814936593b

            SHA1

            fbed27e33b48d337ca31c50da3a06d4feb145f59

            SHA256

            6155be77276246b92a0da6797ad3294cf847d0d16f75cc42af302dd231040d35

            SHA512

            447bfca9c564e371655f6d2c500e63454039b07a083bbe114ed7dd87ecfcd9f474fb10752ec885185fb6f286914cc2bf12a2d140d332c81f67847f9c6bb57380

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4190e7f8b855180d973bd1814936593b

            SHA1

            fbed27e33b48d337ca31c50da3a06d4feb145f59

            SHA256

            6155be77276246b92a0da6797ad3294cf847d0d16f75cc42af302dd231040d35

            SHA512

            447bfca9c564e371655f6d2c500e63454039b07a083bbe114ed7dd87ecfcd9f474fb10752ec885185fb6f286914cc2bf12a2d140d332c81f67847f9c6bb57380

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f33afeded94ae3448218aeadf2189909

            SHA1

            b48c8ecdc3d0425918ee164b9804eab36d92d137

            SHA256

            0d97a2d8fc56cc3bcc84d81708af2b779a837c115072fb4f482f83081c26c6da

            SHA512

            2aba903838b161104b5135de6422e07503d6baa291f1a6321558a552520468321de7faf2e4b106c29b201a6af1d79ed7345aa3e961fe051b91319fa87426e438

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fc2324b9904281767e2481b147c7d213

            SHA1

            16804c206fc8ce270bbd658f6d97e4c5ba643d3a

            SHA256

            daf4d113d54042936cb590f00448cb2fb3155c7a9a72e0fad8d668aac5c54ccf

            SHA512

            e5ca8a643d549196908e7804ab875a1ce884ecacd493a60186f16b26825ffe6d74695f9ea1a61e1a9dc7e876c29c98ce49f966c858037974d63520cb606bc26a

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7760883a355f4bb0ea58b2fa6eb08bde

            SHA1

            5d63c9a9c0273418bf74a04905618b410c55459c

            SHA256

            9bae266eccc694159467b23c150806008021818d7800f5be877add558c5db4e7

            SHA512

            e05159e1d173ae1544bd8199da4b3fe9918ed122ab5ae04cf04c02da5e761a4a4e577dd844dfe32592b1093a48be10ec4c82d4ccaaa27cea2ee99e83f9641124

          • memory/856-62-0x0000000000000000-mapping.dmp

          • memory/1088-61-0x0000000000000000-mapping.dmp

          • memory/1104-54-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

            Filesize

            8KB

          • memory/1104-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1104-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1112-70-0x0000000000000000-mapping.dmp

          • memory/1160-86-0x0000000000000000-mapping.dmp

          • memory/1372-58-0x0000000000000000-mapping.dmp

          • memory/1444-64-0x0000000000000000-mapping.dmp

          • memory/1588-87-0x0000000000000000-mapping.dmp

          • memory/1688-76-0x0000000000000000-mapping.dmp

          • memory/1960-57-0x0000000000000000-mapping.dmp

          • memory/1988-81-0x0000000000000000-mapping.dmp

          • memory/2008-80-0x0000000000000000-mapping.dmp