Analysis

  • max time kernel
    125s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2022, 00:04

General

  • Target
    42e701f99294b784445812bb6e707326c7c522dc5151e1c12f919ce47f53f1c7.exe
  • Size 602KB
  • Sample221122-ac4lxacc86
  • SHA256 42e701f99294b784445812bb6e707326c7c522dc5151e1c12f919ce47f53f1c7
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42e701f99294b784445812bb6e707326c7c522dc5151e1c12f919ce47f53f1c7.exe
    "C:\Users\Admin\AppData\Local\Temp\42e701f99294b784445812bb6e707326c7c522dc5151e1c12f919ce47f53f1c7.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:3008
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2032
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3740
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3984
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3980
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4764
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3124
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3200
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4948
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2412
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4560
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4856
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4852

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                System.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\System.dll
                • Size 11KB
                • SHA256 dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsbCAC9.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 a558e29ba9773f14d37bac92cc3798e83430df234083581897187b4ee569f01b
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 a558e29ba9773f14d37bac92cc3798e83430df234083581897187b4ee569f01b
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 a558e29ba9773f14d37bac92cc3798e83430df234083581897187b4ee569f01b
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 a558e29ba9773f14d37bac92cc3798e83430df234083581897187b4ee569f01b
                • MD5 SHA1 SHA512 SSDEEP

                hfpapi.dll

                • Path C:\Windows\SysWOW64\hfpapi.dll
                • Size 241KB
                • SHA256 5c67222f3b330f20b8ea47c627b634b1fcf39beeabb72578ae0599826260f5f2
                • MD5 SHA1 SHA512 SSDEEP

                hfpapi.dll

                • Path C:\Windows\SysWOW64\hfpapi.dll
                • Size 241KB
                • SHA256 5c67222f3b330f20b8ea47c627b634b1fcf39beeabb72578ae0599826260f5f2
                • MD5 SHA1 SHA512 SSDEEP

                hfpapi.dll

                • Path C:\Windows\SysWOW64\hfpapi.dll
                • Size 241KB
                • SHA256 5c67222f3b330f20b8ea47c627b634b1fcf39beeabb72578ae0599826260f5f2
                • MD5 SHA1 SHA512 SSDEEP

                installd.exe

                • Path C:\Windows\SysWOW64\installd.exe
                • Size 108KB
                • SHA256 232a9a843e32a0540071057f57b6e76b74bc5020db7ebb3b6cb2552c3fd20ead
                • MD5 SHA1 SHA512 SSDEEP

                installd.exe

                • Path C:\Windows\SysWOW64\installd.exe
                • Size 108KB
                • SHA256 232a9a843e32a0540071057f57b6e76b74bc5020db7ebb3b6cb2552c3fd20ead
                • MD5 SHA1 SHA512 SSDEEP

                nethtsrv.exe

                • Path C:\Windows\SysWOW64\nethtsrv.exe
                • Size 176KB
                • SHA256 ce486fe528d01fc8816bcf097cac120920ac54086c86b6cc393bc4171b5e4890
                • MD5 SHA1 SHA512 SSDEEP

                nethtsrv.exe

                • Path C:\Windows\SysWOW64\nethtsrv.exe
                • Size 176KB
                • SHA256 ce486fe528d01fc8816bcf097cac120920ac54086c86b6cc393bc4171b5e4890
                • MD5 SHA1 SHA512 SSDEEP

                nethtsrv.exe

                • Path C:\Windows\SysWOW64\nethtsrv.exe
                • Size 176KB
                • SHA256 ce486fe528d01fc8816bcf097cac120920ac54086c86b6cc393bc4171b5e4890
                • MD5 SHA1 SHA512 SSDEEP

                netupdsrv.exe

                • Path C:\Windows\SysWOW64\netupdsrv.exe
                • Size 158KB
                • SHA256 de260aaebe531d0b36c05513831e9af8e114cae7ff71bbfa9d04228311fca723
                • MD5 SHA1 SHA512 SSDEEP

                netupdsrv.exe

                • Path C:\Windows\SysWOW64\netupdsrv.exe
                • Size 158KB
                • SHA256 de260aaebe531d0b36c05513831e9af8e114cae7ff71bbfa9d04228311fca723
                • MD5 SHA1 SHA512 SSDEEP

                netupdsrv.exe

                • Path C:\Windows\SysWOW64\netupdsrv.exe
                • Size 158KB
                • SHA256 de260aaebe531d0b36c05513831e9af8e114cae7ff71bbfa9d04228311fca723
                • MD5 SHA1 SHA512 SSDEEP

                memory/3008-168-0x0000000000360000-0x00000000007BE000-memory.dmp

                memory/3008-137-0x0000000000360000-0x00000000007BE000-memory.dmp