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Analysis

  • max time kernel
    82s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/11/2022, 10:38

General

  • Target

    9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll

  • Size

    388KB

  • MD5

    20d11451f2c1dafb5023993e397f9a80

  • SHA1

    5be6f1bece4a0422adb05f27e1c214feba093554

  • SHA256

    9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e

  • SHA512

    3307f8969cfc67ee66349e1db742bb890c374facb1757bf1b82c38b6f66bcd5ba9badcd232903dbecccf29cd71520cc30dbea0769b2d2b1e3a11c043ec686c80

  • SSDEEP

    6144:uIrIshB5Esv4ULo6bVGTraIYteLLqsOQ9jUG9+45Vrr58/YVGqq0IjeF7KtB:frIshbtv4ULTZGPysOGL5Nd0lL0jI

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3704
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:1984
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:804
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3876
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3876 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4616
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 640
        3⤵
        • Program crash
        PID:3304
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1612 -ip 1612
    1⤵
      PID:3780

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft\DesktopLayer.exe

      Filesize

      55KB

      MD5

      ff5e1f27193ce51eec318714ef038bef

      SHA1

      b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

      SHA256

      fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

      SHA512

      c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

    • C:\Program Files (x86)\Microsoft\DesktopLayer.exe

      Filesize

      55KB

      MD5

      ff5e1f27193ce51eec318714ef038bef

      SHA1

      b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

      SHA256

      fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

      SHA512

      c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      471B

      MD5

      cb295ed32b0acd9eac87bcc961fb315a

      SHA1

      a580f2d38c9d1611e25b6aaa3d79b54eb34d3ebe

      SHA256

      980abeaa872503211925db8acf8bdcdff0bc3c6deb2182fd698f6a444d2625be

      SHA512

      974f48bdfb8ea90a49cfa25cacc98c9a145702f4e4967dd6ffddd5eaee6144189499682e80b342708e04f812006314b04e5715492170d0f63c7b0530e9cd399a

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      404B

      MD5

      9c2c33d8d137955788a7d0643b2648af

      SHA1

      0f431a5085637265ececc9d1ae0f542ad392eb0f

      SHA256

      21e700076a749d70602046960dca2adb5335fb0ca558114dcbb789beceb172bd

      SHA512

      c5f8b647960d8ca08498dd6ce2682080be7720195028cb6799dbc92e5976a3498238a7b58e84b2496ecc22944dba06fb8feb3f3ab9ec7677a15224f1fb53db6e

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      55KB

      MD5

      ff5e1f27193ce51eec318714ef038bef

      SHA1

      b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

      SHA256

      fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

      SHA512

      c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      55KB

      MD5

      ff5e1f27193ce51eec318714ef038bef

      SHA1

      b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

      SHA256

      fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

      SHA512

      c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

    • memory/804-140-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/1612-141-0x0000000010000000-0x0000000010063000-memory.dmp

      Filesize

      396KB

    • memory/1612-142-0x0000000010000000-0x0000000010063000-memory.dmp

      Filesize

      396KB

    • memory/1984-138-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB