Analysis

  • max time kernel
    38s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    2fa035100d41e6259a9b54d8d1f6f0972daf20898c04be8c7b29a808121c81dd.exe

  • Size

    602KB

  • MD5

    a34b9d90071489d0452f755183a153d8

  • SHA1

    ef57ae198db8e0a37e44385b306e4135e7703058

  • SHA256

    2fa035100d41e6259a9b54d8d1f6f0972daf20898c04be8c7b29a808121c81dd

  • SHA512

    91b2c5eec2b0a25d665b84c3c97d5c807c61863af9426c828d7deca599c1fa56de5a6ebd5c450b4e6c988e2ccc976369f1d5091ba2ee01ac8fe3703937b172db

  • SSDEEP

    12288:BIny5DYTWvvZKtvMUgjItMHNHpGCpjMVQWZwSQE:9UTWvvZK5BFo/1oZZ1

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\2fa035100d41e6259a9b54d8d1f6f0972daf20898c04be8c7b29a808121c81dd.exe
    "C:\Users\Admin\AppData\Local\Temp\2fa035100d41e6259a9b54d8d1f6f0972daf20898c04be8c7b29a808121c81dd.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:576
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1044
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1284
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:948
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1520
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1536
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:584
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1672
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:560
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1400
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:700
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:864
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1960
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1540

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a28f87dc3fac26b9ac0871f622c7c7a3

            SHA1

            13913afb96fb2a1541b2ce784e067041cd6d642f

            SHA256

            e03bfff3a3877d10aa49ed907e46bb9c23bb7d17d4f2123873a9f484096df68f

            SHA512

            f1d4ee123f316fb7938529c752ef5650f81379ee55a6d10058eb1c3152315c40a10031d0e4e04ea018bd901be2612670e3f73521a4688b04063014d2f6f3d12e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f24ac8783a231fce52333467b11cef84

            SHA1

            95f11f78f0b0208a3907dc25d301d94f8e7b62cd

            SHA256

            80c2797624a52997722fcd01f918a282cd1217412172208f3598245de37d3a03

            SHA512

            cd96ab51a7a7da4aad2cc0a2f04eb50c8e7bd3f3e4aa642787af3479f7d3c090d427cc01493e7f9876ef44e27c2428af7d53f50084cd5e92f4ccb0ba56514e91

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1961711d137c05bbf0337976383672ba

            SHA1

            a39d5a52291925c349ff4bc9e4197174c8762455

            SHA256

            27855b848c06bfa644551ad8cc5c5c6e8d2640e27d67992b3d2c8d0befb65b02

            SHA512

            1ef8a4698c82203b0604fcdd83541cf8908b4e645ecff3bd1a8b63d49dd454365054c71ed7e118bbe3606b3938cf5817ca9de5822068f0f3900aa791baa44f52

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            067938329be8baa980f8c6567db81a23

            SHA1

            91a30c20765abbcdb41d775217cbf6020f4fcc0c

            SHA256

            908c0cdcb8e213b59fb180e5ef39a864c14b762b0e49da93e145855c389ad370

            SHA512

            4bfb22dc6326e431b3f53007b838257288318b355f257eb8e1e5135c61d4cde8072b35e6cfc9463c54dd7c5eb9bd5c8037cc74de4dd9067e1fc36d3b1389404b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            067938329be8baa980f8c6567db81a23

            SHA1

            91a30c20765abbcdb41d775217cbf6020f4fcc0c

            SHA256

            908c0cdcb8e213b59fb180e5ef39a864c14b762b0e49da93e145855c389ad370

            SHA512

            4bfb22dc6326e431b3f53007b838257288318b355f257eb8e1e5135c61d4cde8072b35e6cfc9463c54dd7c5eb9bd5c8037cc74de4dd9067e1fc36d3b1389404b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            15dd8c8ec989968e51c2c8777c2b7841

            SHA1

            bd07f5601be202028b55ff6357e4f81b37e6636b

            SHA256

            19c250378d1cd846d87f28006f4cde48fa00b57d1dd10a52e1f3c154ebc2f1f4

            SHA512

            ee54224b06a08c037ac30c27db4d1f024b080f82abcaf2f2f9969ce965c4e38209dfecbda6d5507a1db17e958771ed75240cdfc1529215b92708cdefd23c2851

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            15dd8c8ec989968e51c2c8777c2b7841

            SHA1

            bd07f5601be202028b55ff6357e4f81b37e6636b

            SHA256

            19c250378d1cd846d87f28006f4cde48fa00b57d1dd10a52e1f3c154ebc2f1f4

            SHA512

            ee54224b06a08c037ac30c27db4d1f024b080f82abcaf2f2f9969ce965c4e38209dfecbda6d5507a1db17e958771ed75240cdfc1529215b92708cdefd23c2851

          • \Users\Admin\AppData\Local\Temp\nsy6A98.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy6A98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy6A98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy6A98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy6A98.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a28f87dc3fac26b9ac0871f622c7c7a3

            SHA1

            13913afb96fb2a1541b2ce784e067041cd6d642f

            SHA256

            e03bfff3a3877d10aa49ed907e46bb9c23bb7d17d4f2123873a9f484096df68f

            SHA512

            f1d4ee123f316fb7938529c752ef5650f81379ee55a6d10058eb1c3152315c40a10031d0e4e04ea018bd901be2612670e3f73521a4688b04063014d2f6f3d12e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a28f87dc3fac26b9ac0871f622c7c7a3

            SHA1

            13913afb96fb2a1541b2ce784e067041cd6d642f

            SHA256

            e03bfff3a3877d10aa49ed907e46bb9c23bb7d17d4f2123873a9f484096df68f

            SHA512

            f1d4ee123f316fb7938529c752ef5650f81379ee55a6d10058eb1c3152315c40a10031d0e4e04ea018bd901be2612670e3f73521a4688b04063014d2f6f3d12e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a28f87dc3fac26b9ac0871f622c7c7a3

            SHA1

            13913afb96fb2a1541b2ce784e067041cd6d642f

            SHA256

            e03bfff3a3877d10aa49ed907e46bb9c23bb7d17d4f2123873a9f484096df68f

            SHA512

            f1d4ee123f316fb7938529c752ef5650f81379ee55a6d10058eb1c3152315c40a10031d0e4e04ea018bd901be2612670e3f73521a4688b04063014d2f6f3d12e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f24ac8783a231fce52333467b11cef84

            SHA1

            95f11f78f0b0208a3907dc25d301d94f8e7b62cd

            SHA256

            80c2797624a52997722fcd01f918a282cd1217412172208f3598245de37d3a03

            SHA512

            cd96ab51a7a7da4aad2cc0a2f04eb50c8e7bd3f3e4aa642787af3479f7d3c090d427cc01493e7f9876ef44e27c2428af7d53f50084cd5e92f4ccb0ba56514e91

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f24ac8783a231fce52333467b11cef84

            SHA1

            95f11f78f0b0208a3907dc25d301d94f8e7b62cd

            SHA256

            80c2797624a52997722fcd01f918a282cd1217412172208f3598245de37d3a03

            SHA512

            cd96ab51a7a7da4aad2cc0a2f04eb50c8e7bd3f3e4aa642787af3479f7d3c090d427cc01493e7f9876ef44e27c2428af7d53f50084cd5e92f4ccb0ba56514e91

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            1961711d137c05bbf0337976383672ba

            SHA1

            a39d5a52291925c349ff4bc9e4197174c8762455

            SHA256

            27855b848c06bfa644551ad8cc5c5c6e8d2640e27d67992b3d2c8d0befb65b02

            SHA512

            1ef8a4698c82203b0604fcdd83541cf8908b4e645ecff3bd1a8b63d49dd454365054c71ed7e118bbe3606b3938cf5817ca9de5822068f0f3900aa791baa44f52

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            067938329be8baa980f8c6567db81a23

            SHA1

            91a30c20765abbcdb41d775217cbf6020f4fcc0c

            SHA256

            908c0cdcb8e213b59fb180e5ef39a864c14b762b0e49da93e145855c389ad370

            SHA512

            4bfb22dc6326e431b3f53007b838257288318b355f257eb8e1e5135c61d4cde8072b35e6cfc9463c54dd7c5eb9bd5c8037cc74de4dd9067e1fc36d3b1389404b

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            15dd8c8ec989968e51c2c8777c2b7841

            SHA1

            bd07f5601be202028b55ff6357e4f81b37e6636b

            SHA256

            19c250378d1cd846d87f28006f4cde48fa00b57d1dd10a52e1f3c154ebc2f1f4

            SHA512

            ee54224b06a08c037ac30c27db4d1f024b080f82abcaf2f2f9969ce965c4e38209dfecbda6d5507a1db17e958771ed75240cdfc1529215b92708cdefd23c2851

          • memory/560-80-0x0000000000000000-mapping.dmp

          • memory/576-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/576-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/576-54-0x0000000075911000-0x0000000075913000-memory.dmp

            Filesize

            8KB

          • memory/584-70-0x0000000000000000-mapping.dmp

          • memory/700-86-0x0000000000000000-mapping.dmp

          • memory/864-87-0x0000000000000000-mapping.dmp

          • memory/948-61-0x0000000000000000-mapping.dmp

          • memory/1044-58-0x0000000000000000-mapping.dmp

          • memory/1284-59-0x0000000000000000-mapping.dmp

          • memory/1400-81-0x0000000000000000-mapping.dmp

          • memory/1520-62-0x0000000000000000-mapping.dmp

          • memory/1536-64-0x0000000000000000-mapping.dmp

          • memory/1672-76-0x0000000000000000-mapping.dmp