Resubmissions

04-04-2024 21:22

240404-z72s8saf8t 10

03-03-2024 22:34

240303-2g4k9aba56 10

Analysis

  • max time kernel
    611s
  • max time network
    625s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-03-2024 22:34

General

  • Target

    BadRabbit.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
  • Blocklisted process makes network request 7 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BadRabbit.exe
    "C:\Users\Admin\AppData\Local\Temp\BadRabbit.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4852
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4408
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Delete /F /TN rhaegal
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3888
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /F /TN rhaegal
          4⤵
            PID:1944
        • 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 1993620050 && exit"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1904
          • 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 1993620050 && exit"
            4⤵
            • Creates scheduled task(s)
            PID:5096
        • 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 23:24:00
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:728
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 23:24:00
            4⤵
            • Creates scheduled task(s)
            PID:1084
        • C:\Windows\B882.tmp
          "C:\Windows\B882.tmp" \\.\pipe\{4EF166BF-1407-4E49-AD1A-A8C545F02D62}
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3168
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4228 --field-trial-handle=2264,i,7010714054498059916,1862725710331979271,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:5012
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4048 --field-trial-handle=2264,i,7010714054498059916,1862725710331979271,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:3548

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\B882.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/4408-3-0x0000000002D30000-0x0000000002D98000-memory.dmp

          Filesize

          416KB

        • memory/4408-11-0x0000000002D30000-0x0000000002D98000-memory.dmp

          Filesize

          416KB

        • memory/4408-14-0x0000000002D30000-0x0000000002D98000-memory.dmp

          Filesize

          416KB