Analysis

  • max time kernel
    175s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/11/2022, 10:32

General

  • Target
    1d592eaca3471d1e77256791d044d61b85b5788347f3ad008bfc19f34833d011.exe
  • Size 601KB
  • Sample221123-mkx6baec79
  • SHA256 1d592eaca3471d1e77256791d044d61b85b5788347f3ad008bfc19f34833d011
  • 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\1d592eaca3471d1e77256791d044d61b85b5788347f3ad008bfc19f34833d011.exe
    "C:\Users\Admin\AppData\Local\Temp\1d592eaca3471d1e77256791d044d61b85b5788347f3ad008bfc19f34833d011.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:1492
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2368
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2324
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:228
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3752
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3912
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2684
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2984
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4260
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3652
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4408
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1692
          • 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:4760
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4692

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                System.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\System.dll
                • Size 11KB
                • SHA256 dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                nsExec.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsp5FD5.tmp\nsExec.dll
                • Size 6KB
                • SHA256 168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 323f858c25b5abca0f5278982db8ba77d35847ac0d71eeadd1f1b4c737c9db0c
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 323f858c25b5abca0f5278982db8ba77d35847ac0d71eeadd1f1b4c737c9db0c
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 323f858c25b5abca0f5278982db8ba77d35847ac0d71eeadd1f1b4c737c9db0c
                • MD5 SHA1 SHA512 SSDEEP

                hfnapi.dll

                • Path C:\Windows\SysWOW64\hfnapi.dll
                • Size 106KB
                • SHA256 323f858c25b5abca0f5278982db8ba77d35847ac0d71eeadd1f1b4c737c9db0c
                • MD5 SHA1 SHA512 SSDEEP

                hfpapi.dll

                • Path C:\Windows\SysWOW64\hfpapi.dll
                • Size 241KB
                • SHA256 9c6b1bae80a61cfc073c6bede1c6af2d37eef9d15bfc4118094068b0a61aed3e
                • MD5 SHA1 SHA512 SSDEEP

                hfpapi.dll

                • Path C:\Windows\SysWOW64\hfpapi.dll
                • Size 241KB
                • SHA256 9c6b1bae80a61cfc073c6bede1c6af2d37eef9d15bfc4118094068b0a61aed3e
                • MD5 SHA1 SHA512 SSDEEP

                hfpapi.dll

                • Path C:\Windows\SysWOW64\hfpapi.dll
                • Size 241KB
                • SHA256 9c6b1bae80a61cfc073c6bede1c6af2d37eef9d15bfc4118094068b0a61aed3e
                • MD5 SHA1 SHA512 SSDEEP

                installd.exe

                • Path C:\Windows\SysWOW64\installd.exe
                • Size 108KB
                • SHA256 ef9613ddfffa672455e06ef0ca91532f90e2e816687d49caa15295edf50d9fb9
                • MD5 SHA1 SHA512 SSDEEP

                installd.exe

                • Path C:\Windows\SysWOW64\installd.exe
                • Size 108KB
                • SHA256 ef9613ddfffa672455e06ef0ca91532f90e2e816687d49caa15295edf50d9fb9
                • MD5 SHA1 SHA512 SSDEEP

                nethtsrv.exe

                • Path C:\Windows\SysWOW64\nethtsrv.exe
                • Size 176KB
                • SHA256 8e9f0d7e6f322e4657e81ce1a79edf006264ac262cc33568a0408e9dfb12660d
                • MD5 SHA1 SHA512 SSDEEP

                nethtsrv.exe

                • Path C:\Windows\SysWOW64\nethtsrv.exe
                • Size 176KB
                • SHA256 8e9f0d7e6f322e4657e81ce1a79edf006264ac262cc33568a0408e9dfb12660d
                • MD5 SHA1 SHA512 SSDEEP

                nethtsrv.exe

                • Path C:\Windows\SysWOW64\nethtsrv.exe
                • Size 176KB
                • SHA256 8e9f0d7e6f322e4657e81ce1a79edf006264ac262cc33568a0408e9dfb12660d
                • MD5 SHA1 SHA512 SSDEEP

                netupdsrv.exe

                • Path C:\Windows\SysWOW64\netupdsrv.exe
                • Size 158KB
                • SHA256 9a010488b63ed866fd5a77279066f857b3ff7b1f34ef5f2b1eb9b228ec8e78c5
                • MD5 SHA1 SHA512 SSDEEP

                netupdsrv.exe

                • Path C:\Windows\SysWOW64\netupdsrv.exe
                • Size 158KB
                • SHA256 9a010488b63ed866fd5a77279066f857b3ff7b1f34ef5f2b1eb9b228ec8e78c5
                • MD5 SHA1 SHA512 SSDEEP

                netupdsrv.exe

                • Path C:\Windows\SysWOW64\netupdsrv.exe
                • Size 158KB
                • SHA256 9a010488b63ed866fd5a77279066f857b3ff7b1f34ef5f2b1eb9b228ec8e78c5
                • MD5 SHA1 SHA512 SSDEEP

                memory/1492-137-0x0000000000360000-0x00000000007BE000-memory.dmp

                memory/1492-132-0x0000000000360000-0x00000000007BE000-memory.dmp

                memory/1492-169-0x0000000000360000-0x00000000007BE000-memory.dmp