Analysis

  • max time kernel
    92s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-11-2024 18:06

General

  • Target

    75fd4cbb5b6de86d6da35a7bd8b243e06bd93116936d63917ff046434ffaf0b4.dll

  • Size

    143KB

  • MD5

    33d18de91aa5961da674b83976fa73ad

  • SHA1

    15ecb46e555d2516456b684da14800190fca78e3

  • SHA256

    75fd4cbb5b6de86d6da35a7bd8b243e06bd93116936d63917ff046434ffaf0b4

  • SHA512

    50e46686468b57497270429dd8260029d5420c9a254e08fa367b6298c8e315804f0037dc06946240b0234c3fe49bece4fe19ef77e414af42e52be09e23b74ea3

  • SSDEEP

    3072:x5Np2dlUX0+Cx17F8QRJZKmOK3outK2laPEbsQIxrDfd:PFwT7SMJMzUoSracgQIxrB

Malware Config

Signatures

  • Ramnit

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

  • Ramnit family
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 8 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\75fd4cbb5b6de86d6da35a7bd8b243e06bd93116936d63917ff046434ffaf0b4.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1140
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\75fd4cbb5b6de86d6da35a7bd8b243e06bd93116936d63917ff046434ffaf0b4.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2016
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:924
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3980
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3976
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3976 CREDAT:17410 /prefetch:2
              6⤵
              • System Location Discovery: System Language Discovery
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:1728
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2016 -s 652
        3⤵
        • Program crash
        PID:4228
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2016 -ip 2016
    1⤵
      PID:4080

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      471B

      MD5

      67b3270e9ee2455fec6e20353842018a

      SHA1

      afb768285ecc4fad9cb171c6ec0247e54a645746

      SHA256

      a0e3067884f99355e97dd1979abe971940e233b6d8426ca2f9caedc7f5b25456

      SHA512

      605ae45158f81452bfe383b3a8ec2407ce9c1bcd0d5b1372d13c870569105c764b89abf0a184fa3779770dba24e69b503ba7825026fcfd24fda06cce3ac9f3c5

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

      Filesize

      404B

      MD5

      6de080dff990ab956f95c555b9098610

      SHA1

      a604fa436402f8b7d907df6c4ab360d623692f11

      SHA256

      3ecdeed79d08f10949eafd93f2facd483c06bfa7ea2e92119b0c55b3d7cc7a8c

      SHA512

      04bb7e7bd73c8f90bbfd01d47bebc361a58a7f81cb8da765cedbf69ea7e3af9b5b5f54a7c11a59dc09534584cd8e60470b57377c30acf192cab0a7e2000bc391

    • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verDAFE.tmp

      Filesize

      15KB

      MD5

      1a545d0052b581fbb2ab4c52133846bc

      SHA1

      62f3266a9b9925cd6d98658b92adec673cbe3dd3

      SHA256

      557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

      SHA512

      bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0GUUC90F\suggestions[1].en-US

      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      55KB

      MD5

      ff5e1f27193ce51eec318714ef038bef

      SHA1

      b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

      SHA256

      fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

      SHA512

      c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

    • memory/924-6-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/924-12-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/2016-8-0x0000000010000000-0x000000001004C000-memory.dmp

      Filesize

      304KB

    • memory/2016-15-0x0000000010000000-0x000000001004C000-memory.dmp

      Filesize

      304KB

    • memory/2016-0-0x0000000010000000-0x000000001004C000-memory.dmp

      Filesize

      304KB

    • memory/2016-7-0x0000000010009000-0x000000001000A000-memory.dmp

      Filesize

      4KB

    • memory/3980-14-0x0000000001F10000-0x0000000001F11000-memory.dmp

      Filesize

      4KB

    • memory/3980-20-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/3980-16-0x0000000077CB2000-0x0000000077CB3000-memory.dmp

      Filesize

      4KB

    • memory/3980-17-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/3980-18-0x0000000001F00000-0x0000000001F0F000-memory.dmp

      Filesize

      60KB