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Analysis

  • max time kernel
    939s
  • max time network
    948s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    22-11-2020 06:42

Errors

Reason
Machine shutdown

General

  • Target

  • Size

    739KB

  • MD5

    382430dd7eae8945921b7feab37ed36b

  • SHA1

    c95ddaebe2ae8fbcb361f3bf080d95a7bb5bf128

  • SHA256

    70e5e902d0ac7534838b743c899f484fe10766aefacc6df697219387a8e3d06b

  • SHA512

    26abc02bde77f0b94613edc32e0843ac71a0a8f3d8ba01cb94a42c047d0be7befef52a81984e9a0fa867400082a8905e7a63aaaf85fa32a03d27f7bc6a548c3b

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.

  • Windows security bypass 2 TTPs
  • Clears Windows event logs 1 TTPs
  • Blacklisted process makes network request 2 IoCs
  • Disables RegEdit via registry modification
  • Executes dropped EXE 3 IoCs
  • Modifies WinLogon to allow AutoLogon 2 TTPs 1 IoCs

    Enables rebooting of the machine without requiring login credentials.

  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 3 IoCs
  • Modifies service 2 TTPs 1 IoCs
  • Drops file in Windows directory 14 IoCs
  • 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 3 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry class 2283 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 65 IoCs
  • System policy modification 1 TTPs 4 IoCs
  • Views/modifies file attributes 1 TTPs 1 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:8
    • C:\WINDOWS\302746537.exe
      "C:\WINDOWS\302746537.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:732
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\A398.tmp\302746537.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:868
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32 /s c:\windows\comctl32.ocx
          4⤵
          • Modifies registry class
          PID:3272
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32 /s c:\windows\mscomctl.ocx
          4⤵
          • Modifies registry class
          PID:1492
        • \??\c:\windows\antivirus-platinum.exe
          c:\windows\antivirus-platinum.exe
          4⤵
          • Executes dropped EXE
          • Windows security modification
          • Modifies service
          • Modifies Internet Explorer settings
          • Modifies Internet Explorer start page
          • Suspicious use of SetWindowsHookEx
          • System policy modification
          PID:1524
        • C:\Windows\SysWOW64\attrib.exe
          attrib +h c:\windows\antivirus-platinum.exe
          4⤵
          • Drops file in Windows directory
          • Views/modifies file attributes
          PID:416
  • C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3576
    • 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:848
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Delete /F /TN rhaegal
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2052
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Delete /F /TN rhaegal
          4⤵
            PID:812
        • 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 982044163 && exit"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:976
          • 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 982044163 && exit"
            4⤵
            • Creates scheduled task(s)
            PID:3548
        • 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:3680
          • 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:1400
        • C:\Windows\38B.tmp
          "C:\Windows\38B.tmp" \\.\pipe\{7238A243-7DA2-4BAB-9E06-33C03AC8A08B}
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3736
        • 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:2656
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl Setup
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3868
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl System
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2952
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl Security
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2696
          • C:\Windows\SysWOW64\wevtutil.exe
            wevtutil cl Application
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1120
          • C:\Windows\SysWOW64\fsutil.exe
            fsutil usn deletejournal /D C:
            4⤵
              PID:1408
          • C:\Windows\SysWOW64\cmd.exe
            /c schtasks /Delete /F /TN drogon
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2568
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Delete /F /TN drogon
              4⤵
                PID:3968
        • C:\Windows\system32\LogonUI.exe
          "LogonUI.exe" /flags:0x0 /state0:0xa3ad5855 /state1:0x41c64e6d
          1⤵
          • Modifies WinLogon to allow AutoLogon
          • Modifies data under HKEY_USERS
          • Suspicious use of SetWindowsHookEx
          PID:204

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\A398.tmp\302746537.bat

          MD5

          7d8beb22dfcfacbbc2609f88a41c1458

          SHA1

          52ec2b10489736b963d39a9f84b66bafbf15685f

          SHA256

          4aa9ed4b38514f117e6e4f326cb0a1be7f7b96199e21305e2bd6dce289d7baa2

          SHA512

          a26cf9168cf7450435a9fe8942445511f6fda1087db52bd73e335d6f5b544fc892999019d9291d9dcc60c3656de49688f6d63282c97706e2db286f988e44fd94

        • C:\WINDOWS\302746537.exe

          MD5

          8703ff2e53c6fd3bc91294ef9204baca

          SHA1

          3dbb8f7f5dfe6b235486ab867a2844b1c2143733

          SHA256

          3028a2b0e95143a4caa9bcd6ae794958e7469a20c6e673da067958cbf4310035

          SHA512

          d5eb8a07457a78f9acd0f81d2f58bbf64b52183318b87c353a590cd2a3ac3a6ec9c1452bd52306c7cf99f19b6a897b16ceb8289a7d008c5ce3b07eda9b871204

        • C:\Windows\302746537.exe

          MD5

          8703ff2e53c6fd3bc91294ef9204baca

          SHA1

          3dbb8f7f5dfe6b235486ab867a2844b1c2143733

          SHA256

          3028a2b0e95143a4caa9bcd6ae794958e7469a20c6e673da067958cbf4310035

          SHA512

          d5eb8a07457a78f9acd0f81d2f58bbf64b52183318b87c353a590cd2a3ac3a6ec9c1452bd52306c7cf99f19b6a897b16ceb8289a7d008c5ce3b07eda9b871204

        • C:\Windows\38B.tmp

          MD5

          347ac3b6b791054de3e5720a7144a977

          SHA1

          413eba3973a15c1a6429d9f170f3e8287f98c21c

          SHA256

          301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

          SHA512

          9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

        • C:\Windows\38B.tmp

          MD5

          347ac3b6b791054de3e5720a7144a977

          SHA1

          413eba3973a15c1a6429d9f170f3e8287f98c21c

          SHA256

          301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

          SHA512

          9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

        • C:\Windows\antivirus-platinum.exe

          MD5

          cd1800322ccfc425014a8394b01a4b3d

          SHA1

          171073975effde1c712dfd86309457fd457aed33

          SHA256

          8115de4ad0b7e589852f521eb4260c127f8afeaa3b0021bfc98e4928a4929ac0

          SHA512

          92c22c025fd3a61979fa718bf2e89a86e51bf7e69c421a9534fbf9c2d5b23b7a9224d0e9f3e0501992038837015214d1ef73b532a68b7d19de559c9ab9c6e5f6

        • \??\c:\windows\antivirus-platinum.exe

          MD5

          cd1800322ccfc425014a8394b01a4b3d

          SHA1

          171073975effde1c712dfd86309457fd457aed33

          SHA256

          8115de4ad0b7e589852f521eb4260c127f8afeaa3b0021bfc98e4928a4929ac0

          SHA512

          92c22c025fd3a61979fa718bf2e89a86e51bf7e69c421a9534fbf9c2d5b23b7a9224d0e9f3e0501992038837015214d1ef73b532a68b7d19de559c9ab9c6e5f6

        • \??\c:\windows\comctl32.ocx

          MD5

          821511549e2aaf29889c7b812674d59b

          SHA1

          3b2fd80f634a3d62277e0508bedca9aae0c5a0d6

          SHA256

          f59cdf89f0f522ce3662e09fa847bca9b277b006c415dcc0029b416c347db9c4

          SHA512

          8b2e805b916e5fbfcccb0f4189372aea006789b3847b51018075187135e9b5db9098f704c1932623f356db0ee327e1539a9bf3729947e92844a26db46555e8cd

        • \??\c:\windows\mscomctl.ocx

          MD5

          714cf24fc19a20ae0dc701b48ded2cf6

          SHA1

          d904d2fa7639c38ffb6e69f1ef779ca1001b8c18

          SHA256

          09f126e65d90026c3f659ff41b1287671b8cc1aa16240fc75dae91079a6b9712

          SHA512

          d375fd9b509e58c43355263753634368fa711f02a2235f31f7fa420d1ff77504d9a29bb70ae31c87671d50bd75d6b459379a1550907fbe5c37c60da835c60bc1

        • memory/416-14-0x0000000000000000-mapping.dmp

        • memory/732-1-0x0000000000000000-mapping.dmp

        • memory/812-20-0x0000000000000000-mapping.dmp

        • memory/848-17-0x0000000000000000-mapping.dmp

        • memory/848-18-0x0000000000D20000-0x0000000000D88000-memory.dmp

          Filesize

          416KB

        • memory/868-4-0x0000000000000000-mapping.dmp

        • memory/976-21-0x0000000000000000-mapping.dmp

        • memory/1120-32-0x0000000000000000-mapping.dmp

        • memory/1400-27-0x0000000000000000-mapping.dmp

        • memory/1408-33-0x0000000000000000-mapping.dmp

        • memory/1492-8-0x0000000000000000-mapping.dmp

        • memory/1524-11-0x0000000000000000-mapping.dmp

        • memory/1524-10-0x0000000000000000-mapping.dmp

        • memory/2052-19-0x0000000000000000-mapping.dmp

        • memory/2568-34-0x0000000000000000-mapping.dmp

        • memory/2656-28-0x0000000000000000-mapping.dmp

        • memory/2696-31-0x0000000000000000-mapping.dmp

        • memory/2952-30-0x0000000000000000-mapping.dmp

        • memory/3272-6-0x0000000000000000-mapping.dmp

        • memory/3548-22-0x0000000000000000-mapping.dmp

        • memory/3680-23-0x0000000000000000-mapping.dmp

        • memory/3736-24-0x0000000000000000-mapping.dmp

        • memory/3868-29-0x0000000000000000-mapping.dmp

        • memory/3968-35-0x0000000000000000-mapping.dmp