Analysis

  • max time kernel
    130s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-10-2022 04:50

General

  • Target

    c14d9dd8e680b0e5ff575ec5cdc3350f90eacdfaf2ad9ffdd71504fd5fe2b7b8.dll

  • Size

    448KB

  • MD5

    471078abf45d2672d0ce8d2dcfd27d75

  • SHA1

    bc8f65c374e287b90ece6b67901ba369299aa633

  • SHA256

    c14d9dd8e680b0e5ff575ec5cdc3350f90eacdfaf2ad9ffdd71504fd5fe2b7b8

  • SHA512

    16f97853fc05755406282a4dedf6fb64a312d82763b12cbd6bfe6b0294369aac307218d730893deadc39e6832dd75bac5604c01491f430176af7ae5e847963c9

  • SSDEEP

    12288:c+wREDmrZP9jOuPZirvn+sZK2cZDKd2ez:c+wyirZVjOuPZiqsAKd2ez

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 6 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 50 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 22 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c14d9dd8e680b0e5ff575ec5cdc3350f90eacdfaf2ad9ffdd71504fd5fe2b7b8.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c14d9dd8e680b0e5ff575ec5cdc3350f90eacdfaf2ad9ffdd71504fd5fe2b7b8.dll,#1
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Drops file in System32 directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1448
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1996
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1988
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1988 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1868
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1988 CREDAT:209934 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:268
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1988 CREDAT:209943 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1964
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1988 CREDAT:406549 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1972
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
            PID:1192
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            4⤵
              PID:1952
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              4⤵
                PID:1584

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Windows\SysWOW64\rundll32mgr.exe

          Filesize

          185KB

          MD5

          4dfb6cb766a5afc98df2e550c93fe7b0

          SHA1

          9f8513b67aa60392343a8c982d326a86f4821a4b

          SHA256

          2c9cf6e2b35f8493386bf06009deaf493f874068469a2e6eadcc0d86684442a7

          SHA512

          240500b9a7ca5004413848d1ddcc79367cbb3f17046181ed43a44291d748f1cf5dfe10b4298b2e0418be0c7753750cd3d6fd19f136a3a9144d812ce711a44a14

        • C:\Windows\SysWOW64\rundll32mgr.exe

          Filesize

          185KB

          MD5

          4dfb6cb766a5afc98df2e550c93fe7b0

          SHA1

          9f8513b67aa60392343a8c982d326a86f4821a4b

          SHA256

          2c9cf6e2b35f8493386bf06009deaf493f874068469a2e6eadcc0d86684442a7

          SHA512

          240500b9a7ca5004413848d1ddcc79367cbb3f17046181ed43a44291d748f1cf5dfe10b4298b2e0418be0c7753750cd3d6fd19f136a3a9144d812ce711a44a14

        • \Windows\SysWOW64\rundll32mgr.exe

          Filesize

          185KB

          MD5

          4dfb6cb766a5afc98df2e550c93fe7b0

          SHA1

          9f8513b67aa60392343a8c982d326a86f4821a4b

          SHA256

          2c9cf6e2b35f8493386bf06009deaf493f874068469a2e6eadcc0d86684442a7

          SHA512

          240500b9a7ca5004413848d1ddcc79367cbb3f17046181ed43a44291d748f1cf5dfe10b4298b2e0418be0c7753750cd3d6fd19f136a3a9144d812ce711a44a14

        • \Windows\SysWOW64\rundll32mgr.exe

          Filesize

          185KB

          MD5

          4dfb6cb766a5afc98df2e550c93fe7b0

          SHA1

          9f8513b67aa60392343a8c982d326a86f4821a4b

          SHA256

          2c9cf6e2b35f8493386bf06009deaf493f874068469a2e6eadcc0d86684442a7

          SHA512

          240500b9a7ca5004413848d1ddcc79367cbb3f17046181ed43a44291d748f1cf5dfe10b4298b2e0418be0c7753750cd3d6fd19f136a3a9144d812ce711a44a14

        • memory/1448-56-0x000000006D760000-0x000000006D7D2000-memory.dmp

          Filesize

          456KB

        • memory/1448-55-0x0000000076121000-0x0000000076123000-memory.dmp

          Filesize

          8KB

        • memory/1448-64-0x00000000001D0000-0x0000000000273000-memory.dmp

          Filesize

          652KB

        • memory/1448-66-0x00000000001D0000-0x00000000001DD000-memory.dmp

          Filesize

          52KB

        • memory/1996-63-0x0000000000400000-0x00000000004A3000-memory.dmp

          Filesize

          652KB

        • memory/1996-65-0x0000000000400000-0x00000000004A3000-memory.dmp

          Filesize

          652KB

        • memory/1996-67-0x0000000000400000-0x00000000004A3000-memory.dmp

          Filesize

          652KB