Analysis

  • max time kernel
    124s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    15-04-2023 05:37

Errors

Reason
Machine shutdown

General

  • Target

  • Size

    431KB

  • MD5

    fbbdc39af1139aebba4da004475e8839

  • SHA1

    de5c8d858e6e41da715dca1c019df0bfb92d32c0

  • SHA256

    630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da

  • SHA512

    74eca8c01de215b33d5ceea1fda3f3bef96b513f58a750dba04b0de36f7ef4f7846a6431d52879ca0d8641bfd504d4721a9a96fa2e18c6888fd67fa77686af87

  • SSDEEP

    12288:BHNTywFAvN86pLbqWRKHZKfErrZJyZ0yqsGO3XR63:vT56NbqWRwZaEr3yt2O3XR63

Malware Config

Signatures

  • BadRabbit

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

  • Mimikatz

    mimikatz is an open source tool to dump credentials on Windows.

  • mimikatz is an open source tool to dump credentials on Windows 1 IoCs
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 6 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\[email protected]
    "C:\Users\Admin\AppData\Local\Temp\[email protected]"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
      2⤵
      • Modifies extensions of user files
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1468
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Delete /F /TN rhaegal
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1168
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /F /TN rhaegal
          4⤵
            PID:1688
        • 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 2027771442 && exit"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1476
          • 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 2027771442 && exit"
            4⤵
            • Creates scheduled task(s)
            PID:1764
        • 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 07:55:00
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1492
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 07:55:00
            4⤵
            • Creates scheduled task(s)
            PID:976
        • C:\Windows\1C96.tmp
          "C:\Windows\1C96.tmp" \\.\pipe\{A5C11F9F-0A9A-484B-8735-491F279EEE2D}
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:892
        • C:\Windows\SysWOW64\cmd.exe
          /c wevtutil cl Setup & wevtutil cl System & wevtutil cl Security & wevtutil cl Application & fsutil usn deletejournal /D C:
          3⤵
            PID:884
          • C:\Windows\SysWOW64\cmd.exe
            /c schtasks /Delete /F /TN drogon
            3⤵
              PID:1088
        • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
          "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\Desktop\ApproveInvoke.docx"
          1⤵
          • Drops file in Windows directory
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of SetWindowsHookEx
          PID:1632
        • C:\Windows\System32\notepad.exe
          "C:\Windows\System32\notepad.exe" "C:\Users\Admin\Desktop\UseMove.ps1"
          1⤵
          • Opens file in notepad (likely ransom note)
          PID:1972
        • C:\Windows\system32\LogonUI.exe
          "LogonUI.exe" /flags:0x0
          1⤵
            PID:2008
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x1
            1⤵
              PID:1776

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

              Filesize

              20KB

              MD5

              5c9c2eacc4c33db33548e4710f614d2a

              SHA1

              8b22f0b7cc3017dd5955b249e68612372a55a6f9

              SHA256

              1b22dd8572d25b9ce54ae22f48805ae16c291a7c619509ee0d0f936887259e22

              SHA512

              5a691da5584cc5602372c54b910ddbd2b4312fd2dff98cd00957921beada6f963a4d910d94f985a75b5716de7dc7d29b92d1926f2e607f4304d4b8cf0d6f10a3

            • C:\Windows\1C96.tmp

              Filesize

              60KB

              MD5

              347ac3b6b791054de3e5720a7144a977

              SHA1

              413eba3973a15c1a6429d9f170f3e8287f98c21c

              SHA256

              301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

              SHA512

              9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

            • C:\Windows\infpub.dat

              Filesize

              401KB

              MD5

              1d724f95c61f1055f0d02c2154bbccd3

              SHA1

              79116fe99f2b421c52ef64097f0f39b815b20907

              SHA256

              579fd8a0385482fb4c789561a30b09f25671e86422f40ef5cca2036b28f99648

              SHA512

              f2d7b018d1516df1c97cfff5507957c75c6d9bf8e2ce52ae0052706f4ec62f13eba6d7be17e6ad2b693fdd58e1fd091c37f17bd2b948cdcd9b95b4ad428c0113

            • memory/1468-56-0x0000000001F10000-0x0000000001F78000-memory.dmp

              Filesize

              416KB

            • memory/1468-64-0x0000000001F10000-0x0000000001F78000-memory.dmp

              Filesize

              416KB

            • memory/1468-67-0x0000000001F10000-0x0000000001F78000-memory.dmp

              Filesize

              416KB

            • memory/1632-89-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1632-118-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1776-128-0x0000000002760000-0x0000000002761000-memory.dmp

              Filesize

              4KB

            • memory/2008-122-0x00000000027C0000-0x00000000027C1000-memory.dmp

              Filesize

              4KB