Analysis

  • max time kernel
    133s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    17/04/2024, 11:03

General

  • Target
    ed24bf4f808e131af9a675434289d16ae4c5e85666869eff7fbef05003a18143.dll
  • Size 316KB
  • Sample240417-m51ryaed3x
  • SHA256 ed24bf4f808e131af9a675434289d16ae4c5e85666869eff7fbef05003a18143
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 3 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
  • Modifies Internet Explorer settings 1 TTPs 30 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed24bf4f808e131af9a675434289d16ae4c5e85666869eff7fbef05003a18143.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed24bf4f808e131af9a675434289d16ae4c5e85666869eff7fbef05003a18143.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2972
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:3020
        • 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:2156
          • 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:2796
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2796 CREDAT:275457 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2720

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        DesktopLayer.exe

        • Path C:\Program Files (x86)\Microsoft\DesktopLayer.exe
        • Size 55KB
        • SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
        • MD5 SHA1 SHA512 SSDEEP

        3C428B1A3E5F57D887EC4B864FAC5DCC

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3C428B1A3E5F57D887EC4B864FAC5DCC
        • Size 914B
        • SHA256 cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 68KB
        • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
        • MD5 SHA1 SHA512 SSDEEP

        F0ACCF77CDCBFF39F6191887F6D2D357

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
        • Size 1KB
        • SHA256 df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e
        • MD5 SHA1 SHA512

        3C428B1A3E5F57D887EC4B864FAC5DCC

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3C428B1A3E5F57D887EC4B864FAC5DCC
        • Size 252B
        • SHA256 1eb65f9457b2b2abbe176a0b124b35cb87958db15562ac4e04971528af26777f
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 5d36f765c4df37c51c6d38939b8b25390993f446464570b457fe5f937a9e6390
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 41e93beb4997c3bb3d09504f9a2af3b95ff330a1ba1ccd10af8a3040ef88dd9a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 9522cb265f302cae029c633f5dfbca3ff727859a7c4e6f7db4da4d658b50c0ec
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 cd109bee78eb043b2bd9a9497f9383386bc39b719840e1d841470d4f521da403
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 65f9fe8a839eb67c05b04a64587a08ea715ef8f2b82f69a6dac217a54376733a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 5d049f20617942b2fe4f8d55c4e2d2c05ac60eda9bc09f3046186ead9e2ea616
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 9fd9107598f6f0fe99cb0594fb66c378712e7c753d3c0c2fbaa1102597e42f87
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 24fe6234074dfad3e279b6c2f5aa8709a5bf157b4b9cab3b2bdde19fe5299cf5
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 d8982c9c3a8bc9092ff1ff843411c5af2a37b0356b0dd052a1c6a2fa5bf4d408
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 d07df9c5f231860f83bee499bad63bb4a45e6f1155a64b684997d4e0bb3995ae
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 63490da3665d12e9e9164085826289c914f0a43aea18cf5bf958e3a8b49cf1cf
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 1c8cf2605e378c34c3201a26a83cfa81105bb3ba8f910e43bf3e1beb2e672dac
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 3ab5462ab3ee9b9fcfb35128def713ad4696e04254e4b5f2f08e937f3b959eb8
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 aeadd172717ffede921e9ba12289813bd7f27791333801f732b75136cdc18043
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 964c3bd2ac33c3d5e3366508c8e15caf8b083b7dbc1f8229a9585ccfe0f83cfc
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 f560f45df815d437fa23619bd7a29dc6f986ec96a2f2af2718f71d5af0802e55
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 ab3339eb94f5e50d99100483e155f0a737032866983a0ec22b7ab117b855b584
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 3038944b9972bdca7b7d60c961117b7458c03df15197ac39367ab45784bc2aba
        • MD5 SHA1 SHA512

        F0ACCF77CDCBFF39F6191887F6D2D357

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
        • Size 242B
        • SHA256 7d287a55ee07ae82dbf0a4d8b6db5f298f3c5305c0e9fb837b6a052c146ce93b
        • MD5 SHA1 SHA512

        search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico
        • Size 4KB
        • SHA256 5b2c34b3c4e8dd898b664dba6c3786e2ff9869eff55d673aa48361f11325ed07
        • MD5 SHA1 SHA512 SSDEEP

        Tar2024.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar2024.tmp
        • Size 177KB
        • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
        • MD5 SHA1 SHA512 SSDEEP

        memory/2156-17-0x00000000001D0000-0x00000000001D1000-memory.dmp

        memory/2156-18-0x0000000000400000-0x000000000042E000-memory.dmp

        memory/2972-0-0x0000000010000000-0x0000000010051000-memory.dmp

        memory/2972-7-0x0000000010000000-0x0000000010051000-memory.dmp

        memory/2972-1-0x0000000010000000-0x0000000010051000-memory.dmp

        memory/3020-10-0x0000000000400000-0x000000000042E000-memory.dmp