Analysis

  • max time kernel
    46s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:25

General

  • Target

    5a303c430f2117c2620256d209d9a7d9b3b68b7b175e0faed690d86c0cb1c4d9.exe

  • Size

    603KB

  • MD5

    8d10663d7d977a98cdb9a8db50d87f91

  • SHA1

    72b9834fc801f3872f9185349da9c7ed7109ce27

  • SHA256

    5a303c430f2117c2620256d209d9a7d9b3b68b7b175e0faed690d86c0cb1c4d9

  • SHA512

    5c1f5abd5699adbded7a11eba0ce6a6482ca994c79ed5478d9de70b9add7d519b65a8a9bbb4e6b93148d07fddc063413985a987b9b1bd3ad12931f9caf75869f

  • SSDEEP

    12288:zIny5DYTVOIpSO0bQ44n0k5j1T+ppiNy6mutBhURKCrnQp6Cskf/4mI:bUTVnV0bOf1aONjBhURKCUp6CskX4B

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\5a303c430f2117c2620256d209d9a7d9b3b68b7b175e0faed690d86c0cb1c4d9.exe
    "C:\Users\Admin\AppData\Local\Temp\5a303c430f2117c2620256d209d9a7d9b3b68b7b175e0faed690d86c0cb1c4d9.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:2036
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1028
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1492
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1672
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:892
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1636
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1800
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1820
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1612
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1200
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1544
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1260

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            64de2f62791e7d38002876b499f3a122

            SHA1

            d490395c993490961918382ca4e6b72a45f2615e

            SHA256

            0d7516e131da6b04d298a60ac05a9f1913663d86506cc6d18719fd8cf98ed254

            SHA512

            a5330df27d00d728ed11311ccf63f8a23059ffc08cc561c3d4732c568f691b4c1693b24e02c1931d4dbd0fef4420eee7a5cbe993b0acb7769fa5460d0acdf537

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            a0bb6f23e4aa7d43a48ba2e7e04227b0

            SHA1

            7862780eb017389fb674e67dcefb1e80a525fdc0

            SHA256

            a598e1e4ce6817c9146d0f4c1fabdc02c7dfa4d53bbb62da80500c62492b7811

            SHA512

            d8e02c6487d7bbc31f93dab3dc8c01bb83899704f03c6438e9ae0776c23ce389401d4d558db5a344a66a0b731b9afb99a202a7498a75f122fd44ebe5d58caeec

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            1690449390f4fc89ca7c92764abcd724

            SHA1

            692f0aba5818161d9237e2c788ac261d916c9eb2

            SHA256

            a847b18b7ae65e54e79a4ee5622a8c1d19c338469b15d6cddc83010e93934100

            SHA512

            8a1f189631356f77f374b05de49f056161bd99fb7df883d5548ef267e308a394bd736b3cb212c8e723b0c373aa7af640fa1321020ade4881ef627ae63f7de45d

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ce18c1f78aae0cf4e4baba0d4bbe1990

            SHA1

            fb3a77dca327bb2553c92a0b490af1803a0eba59

            SHA256

            9ff90f6897192afbef11a060a8b88efc83538a7bc7ff00ce6e93eb0104bb27d5

            SHA512

            bf99e6b72ae582bf1f50b823e30c580f3a876bbd520d3d9b823c5281d62f5b7b2390aaef231085897bf2960a54600dfc03ac45e63dd13ebfa960a92340d12052

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ce18c1f78aae0cf4e4baba0d4bbe1990

            SHA1

            fb3a77dca327bb2553c92a0b490af1803a0eba59

            SHA256

            9ff90f6897192afbef11a060a8b88efc83538a7bc7ff00ce6e93eb0104bb27d5

            SHA512

            bf99e6b72ae582bf1f50b823e30c580f3a876bbd520d3d9b823c5281d62f5b7b2390aaef231085897bf2960a54600dfc03ac45e63dd13ebfa960a92340d12052

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            9fd8da248c0010e6de6e2251d8f61452

            SHA1

            0bd58b5df5db6b7011754cbe7f019e3e06fdf04b

            SHA256

            45e4a00535f01e5d86092b44cd329d47ce5e6d494c55f8d49f42d63194651dc6

            SHA512

            362f2e6fc8206c364923059f996c4feb3619a3b589b7ad1d0ee902a7a105ebeb57cc63e001cdd6a7548b409c65af8135394e835fbc5f125b5e674745b76ffc87

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            9fd8da248c0010e6de6e2251d8f61452

            SHA1

            0bd58b5df5db6b7011754cbe7f019e3e06fdf04b

            SHA256

            45e4a00535f01e5d86092b44cd329d47ce5e6d494c55f8d49f42d63194651dc6

            SHA512

            362f2e6fc8206c364923059f996c4feb3619a3b589b7ad1d0ee902a7a105ebeb57cc63e001cdd6a7548b409c65af8135394e835fbc5f125b5e674745b76ffc87

          • \Users\Admin\AppData\Local\Temp\nsjCD8F.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjCD8F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjCD8F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjCD8F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjCD8F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            64de2f62791e7d38002876b499f3a122

            SHA1

            d490395c993490961918382ca4e6b72a45f2615e

            SHA256

            0d7516e131da6b04d298a60ac05a9f1913663d86506cc6d18719fd8cf98ed254

            SHA512

            a5330df27d00d728ed11311ccf63f8a23059ffc08cc561c3d4732c568f691b4c1693b24e02c1931d4dbd0fef4420eee7a5cbe993b0acb7769fa5460d0acdf537

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            64de2f62791e7d38002876b499f3a122

            SHA1

            d490395c993490961918382ca4e6b72a45f2615e

            SHA256

            0d7516e131da6b04d298a60ac05a9f1913663d86506cc6d18719fd8cf98ed254

            SHA512

            a5330df27d00d728ed11311ccf63f8a23059ffc08cc561c3d4732c568f691b4c1693b24e02c1931d4dbd0fef4420eee7a5cbe993b0acb7769fa5460d0acdf537

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            64de2f62791e7d38002876b499f3a122

            SHA1

            d490395c993490961918382ca4e6b72a45f2615e

            SHA256

            0d7516e131da6b04d298a60ac05a9f1913663d86506cc6d18719fd8cf98ed254

            SHA512

            a5330df27d00d728ed11311ccf63f8a23059ffc08cc561c3d4732c568f691b4c1693b24e02c1931d4dbd0fef4420eee7a5cbe993b0acb7769fa5460d0acdf537

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            a0bb6f23e4aa7d43a48ba2e7e04227b0

            SHA1

            7862780eb017389fb674e67dcefb1e80a525fdc0

            SHA256

            a598e1e4ce6817c9146d0f4c1fabdc02c7dfa4d53bbb62da80500c62492b7811

            SHA512

            d8e02c6487d7bbc31f93dab3dc8c01bb83899704f03c6438e9ae0776c23ce389401d4d558db5a344a66a0b731b9afb99a202a7498a75f122fd44ebe5d58caeec

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            a0bb6f23e4aa7d43a48ba2e7e04227b0

            SHA1

            7862780eb017389fb674e67dcefb1e80a525fdc0

            SHA256

            a598e1e4ce6817c9146d0f4c1fabdc02c7dfa4d53bbb62da80500c62492b7811

            SHA512

            d8e02c6487d7bbc31f93dab3dc8c01bb83899704f03c6438e9ae0776c23ce389401d4d558db5a344a66a0b731b9afb99a202a7498a75f122fd44ebe5d58caeec

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            1690449390f4fc89ca7c92764abcd724

            SHA1

            692f0aba5818161d9237e2c788ac261d916c9eb2

            SHA256

            a847b18b7ae65e54e79a4ee5622a8c1d19c338469b15d6cddc83010e93934100

            SHA512

            8a1f189631356f77f374b05de49f056161bd99fb7df883d5548ef267e308a394bd736b3cb212c8e723b0c373aa7af640fa1321020ade4881ef627ae63f7de45d

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ce18c1f78aae0cf4e4baba0d4bbe1990

            SHA1

            fb3a77dca327bb2553c92a0b490af1803a0eba59

            SHA256

            9ff90f6897192afbef11a060a8b88efc83538a7bc7ff00ce6e93eb0104bb27d5

            SHA512

            bf99e6b72ae582bf1f50b823e30c580f3a876bbd520d3d9b823c5281d62f5b7b2390aaef231085897bf2960a54600dfc03ac45e63dd13ebfa960a92340d12052

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            9fd8da248c0010e6de6e2251d8f61452

            SHA1

            0bd58b5df5db6b7011754cbe7f019e3e06fdf04b

            SHA256

            45e4a00535f01e5d86092b44cd329d47ce5e6d494c55f8d49f42d63194651dc6

            SHA512

            362f2e6fc8206c364923059f996c4feb3619a3b589b7ad1d0ee902a7a105ebeb57cc63e001cdd6a7548b409c65af8135394e835fbc5f125b5e674745b76ffc87

          • memory/268-57-0x0000000000000000-mapping.dmp
          • memory/892-71-0x0000000000000000-mapping.dmp
          • memory/1028-58-0x0000000000000000-mapping.dmp
          • memory/1200-88-0x0000000000000000-mapping.dmp
          • memory/1340-60-0x0000000000000000-mapping.dmp
          • memory/1492-61-0x0000000000000000-mapping.dmp
          • memory/1612-87-0x0000000000000000-mapping.dmp
          • memory/1636-77-0x0000000000000000-mapping.dmp
          • memory/1672-64-0x0000000000000000-mapping.dmp
          • memory/1800-81-0x0000000000000000-mapping.dmp
          • memory/1820-82-0x0000000000000000-mapping.dmp
          • memory/2036-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2036-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2036-54-0x0000000075A91000-0x0000000075A93000-memory.dmp
            Filesize

            8KB

          • memory/2036-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB