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Analysis

  • max time kernel
    944s
  • max time network
    951s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    22-11-2020 06:42

Errors

Reason
Machine shutdown

General

  • Target

  • Size

    190KB

  • MD5

    248aadd395ffa7ffb1670392a9398454

  • SHA1

    c53c140bbdeb556fca33bc7f9b2e44e9061ea3e5

  • SHA256

    51290129cccca38c6e3b4444d0dfb8d848c8f3fc2e5291fc0d219fd642530adc

  • SHA512

    582b917864903252731c3d0dff536d7b1e44541ee866dc20e0341cbee5450f2f0ff4d82e1eee75f770e4dad9d8b9270ab5664ffedfe21d1ad2bd7fe6bc42cf0e

Malware Config

Signatures

  • BadRabbit

    Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

  • Deletes NTFS Change Journal 2 TTPs

    The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.

  • Clears Windows event logs 1 TTPs
  • Blacklisted process makes network request 5 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies WinLogon to allow AutoLogon 2 TTPs 1 IoCs

    Enables rebooting of the machine without requiring login credentials.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\[email protected]
    "C:\Users\Admin\AppData\Local\Temp\[email protected]"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Users\Admin\AppData\Local\6AdwCleaner.exe
      "C:\Users\Admin\AppData\Local\6AdwCleaner.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3680
  • C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:940
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
      2⤵
      • Blacklisted process makes network request
      • Modifies extensions of user files
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Delete /F /TN rhaegal
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1456
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /F /TN rhaegal
          4⤵
            PID:2144
        • C:\Windows\SysWOW64\cmd.exe
          /c schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 534191100 && exit"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2052
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 534191100 && exit"
            4⤵
            • Creates scheduled task(s)
            PID:2808
        • C:\Windows\SysWOW64\cmd.exe
          /c schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 06:59:00
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2520
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 06:59:00
            4⤵
            • Creates scheduled task(s)
            PID:3372
        • C:\Windows\3C9.tmp
          "C:\Windows\3C9.tmp" \\.\pipe\{1B6653EF-6DD9-46B3-A392-1633C58F85E5}
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3852
        • C:\Windows\SysWOW64\cmd.exe
          /c wevtutil cl Setup & wevtutil cl System & wevtutil cl Security & wevtutil cl Application & fsutil usn deletejournal /D C:
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3500
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl Setup
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:196
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl System
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1920
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl Security
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4060
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl Application
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2080
          • C:\Windows\SysWOW64\fsutil.exe
            fsutil usn deletejournal /D C:
            4⤵
              PID:3964
          • C:\Windows\SysWOW64\cmd.exe
            /c schtasks /Delete /F /TN drogon
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1420
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Delete /F /TN drogon
              4⤵
                PID:60
        • C:\Windows\system32\LogonUI.exe
          "LogonUI.exe" /flags:0x0 /state0:0xa3ad4055 /state1:0x41c64e6d
          1⤵
          • Modifies WinLogon to allow AutoLogon
          • Modifies data under HKEY_USERS
          • Suspicious use of SetWindowsHookEx
          PID:3944

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\6AdwCleaner.exe

          MD5

          87e4959fefec297ebbf42de79b5c88f6

          SHA1

          eba50d6b266b527025cd624003799bdda9a6bc86

          SHA256

          4f0033e811fe2497b38f0d45df958829d01933ebe7d331079eefc8e38fbeaa61

          SHA512

          232fedec0180e85560a226870a244a22f54ca130ed6d6dc95dc02a1ff85f17da396925c9ff27d522067a30ee3e74a38adff375d8752161ee629df14f39cf6ba9

        • C:\Users\Admin\AppData\Local\6AdwCleaner.exe

          MD5

          87e4959fefec297ebbf42de79b5c88f6

          SHA1

          eba50d6b266b527025cd624003799bdda9a6bc86

          SHA256

          4f0033e811fe2497b38f0d45df958829d01933ebe7d331079eefc8e38fbeaa61

          SHA512

          232fedec0180e85560a226870a244a22f54ca130ed6d6dc95dc02a1ff85f17da396925c9ff27d522067a30ee3e74a38adff375d8752161ee629df14f39cf6ba9

        • C:\Windows\3C9.tmp

          MD5

          347ac3b6b791054de3e5720a7144a977

          SHA1

          413eba3973a15c1a6429d9f170f3e8287f98c21c

          SHA256

          301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

          SHA512

          9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

        • C:\Windows\3C9.tmp

          MD5

          347ac3b6b791054de3e5720a7144a977

          SHA1

          413eba3973a15c1a6429d9f170f3e8287f98c21c

          SHA256

          301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

          SHA512

          9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

        • memory/60-24-0x0000000000000000-mapping.dmp

        • memory/196-18-0x0000000000000000-mapping.dmp

        • memory/972-6-0x0000000000000000-mapping.dmp

        • memory/972-7-0x00000000035F0000-0x0000000003658000-memory.dmp

          Filesize

          416KB

        • memory/1420-23-0x0000000000000000-mapping.dmp

        • memory/1456-8-0x0000000000000000-mapping.dmp

        • memory/1920-19-0x0000000000000000-mapping.dmp

        • memory/2052-10-0x0000000000000000-mapping.dmp

        • memory/2080-21-0x0000000000000000-mapping.dmp

        • memory/2144-9-0x0000000000000000-mapping.dmp

        • memory/2520-12-0x0000000000000000-mapping.dmp

        • memory/2808-11-0x0000000000000000-mapping.dmp

        • memory/3372-16-0x0000000000000000-mapping.dmp

        • memory/3500-17-0x0000000000000000-mapping.dmp

        • memory/3680-0-0x0000000000000000-mapping.dmp

        • memory/3680-4-0x0000000000850000-0x0000000000851000-memory.dmp

          Filesize

          4KB

        • memory/3680-3-0x00007FFE6DC70000-0x00007FFE6E65C000-memory.dmp

          Filesize

          9.9MB

        • memory/3852-13-0x0000000000000000-mapping.dmp

        • memory/3964-22-0x0000000000000000-mapping.dmp

        • memory/4060-20-0x0000000000000000-mapping.dmp