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08-05-2024 16:15

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Analysis

  • max time kernel
    256s
  • max time network
    256s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    08-05-2024 16:15

Errors

Reason
Machine shutdown

General

  • Target

    Bad Rabit.exe

  • 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
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 32 IoCs
  • Modifies data under HKEY_USERS 46 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bad Rabit.exe
    "C:\Users\Admin\AppData\Local\Temp\Bad Rabit.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
      2⤵
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2472
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Delete /F /TN rhaegal
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2588
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /F /TN rhaegal
          4⤵
            PID:2740
        • 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 3045833844 && exit"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2920
          • 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 3045833844 && exit"
            4⤵
            • Creates scheduled task(s)
            PID:2088
        • 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 16:34:00
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2632
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 16:34:00
            4⤵
            • Creates scheduled task(s)
            PID:2304
        • C:\Windows\143C.tmp
          "C:\Windows\143C.tmp" \\.\pipe\{DEBF03B3-2EC9-4707-9A44-8553488EE002}
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2552
        • 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:1548
          • C:\Windows\SysWOW64\cmd.exe
            /c schtasks /Delete /F /TN drogon
            3⤵
              PID:1600
        • C:\Windows\system32\csrss.exe
          %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
          1⤵
          • Enumerates system info in registry
          • Suspicious use of WriteProcessMemory
          PID:696
        • C:\Windows\system32\winlogon.exe
          winlogon.exe
          1⤵
          • Modifies data under HKEY_USERS
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1724
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x0
            2⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2932
          • C:\Windows\system32\utilman.exe
            utilman.exe /debug
            2⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            PID:2996
        • C:\Windows\SysWOW64\DllHost.exe
          C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
          1⤵
            PID:1248
          • C:\Windows\system32\AUDIODG.EXE
            C:\Windows\system32\AUDIODG.EXE 0x22c
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1892
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x0
            1⤵
              PID:1752
            • C:\Windows\system32\LogonUI.exe
              "LogonUI.exe" /flags:0x1
              1⤵
                PID:3052

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Windows\143C.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

              • \??\PIPE\wkssvc

                MD5

                d41d8cd98f00b204e9800998ecf8427e

                SHA1

                da39a3ee5e6b4b0d3255bfef95601890afd80709

                SHA256

                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                SHA512

                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

              • memory/2472-2-0x0000000002260000-0x00000000022C8000-memory.dmp

                Filesize

                416KB

              • memory/2472-10-0x0000000002260000-0x00000000022C8000-memory.dmp

                Filesize

                416KB

              • memory/2472-13-0x0000000002260000-0x00000000022C8000-memory.dmp

                Filesize

                416KB