Analysis

  • max time kernel
    94s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 22:11

General

  • Target

    f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a.dll

  • Size

    444KB

  • MD5

    e33faa1aa23b5541bcad705df1843455

  • SHA1

    07675500d51123843466b064f3b9df9beb168177

  • SHA256

    f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a

  • SHA512

    4c4479b0713c3676fa1e65ccfa6c01e3c3924ff4b76a982823df5f419434dd86047825194ee9b73230d24823457a27387d93025c3999d112f57fa8c7754acaf3

  • SSDEEP

    12288:iehnaNPpSVZmNxRCwnwm3W3OHIIf5amBUFCWii:ieh0PpS6NxNnwYeOHX1UgHi

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 13 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 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 50 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2816
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3420
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:3384
        • C:\Program Files (x86)\Microsoft\WaterMark.exe
          "C:\Program Files (x86)\Microsoft\WaterMark.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of UnmapMainImage
          • Suspicious use of WriteProcessMemory
          PID:4692
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:3652
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 204
                6⤵
                • Program crash
                PID:1988
            • 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:3428
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3428 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:4288
            • 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:1216
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1216 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:232
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 616
          3⤵
          • Program crash
          PID:2224
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3420 -ip 3420
      1⤵
        PID:4416
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3652 -ip 3652
        1⤵
          PID:2788

        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

          5e99ec80bb4e60401972729dff7db4f2

          SHA1

          a68a2f47614d8afd1b7afd1e0620d32cd393e2c0

          SHA256

          6ac6e0c6b415580d28c082f0e59f45289379890a167c088a557d3e2578b424e0

          SHA512

          7670c7e91ae9555458275effc570e107c9ae43b02e65f9200b773f9139dfe228faf55f5c4ac5d9d713d0231e16c129baf1c289534b42ac7b4d042f370240c654

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

          Filesize

          404B

          MD5

          047b292212aa559e3ea857329365631c

          SHA1

          b992596d0b2f4671f32502a241bd2ee172909f8f

          SHA256

          ed1321d9647424c74439301adc607f2af501a2a0de103010bdd040b7ed709912

          SHA512

          d08600969da9075fce2298f8b24b1dc70d2afed37dae6d90ecd6f98303865922e9e1b308d74d83356590e838301ed249225f94ec02a32cd18d09554bc0db48e1

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{065352F8-BD8D-11EF-B9B6-FA89EA07D49F}.dat

          Filesize

          5KB

          MD5

          48b231208cf37d2fe6a9415c285f5ea5

          SHA1

          c992e2b62e595c5bc613b8fb0e3904ad11ba842d

          SHA256

          0973c8b46db04c843ec3676b6c8c5e68e5aaf40414a304469068177ac4ca6aea

          SHA512

          d4b0046b688a4a12be9ce90c63b8bd1f0983750fd1f3315d3ca56320c90c021647e70eff0b3e96112cc6e1a414f4ce1f050b7eceb7223435ba8a2ef32a65529f

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{0655B59E-BD8D-11EF-B9B6-FA89EA07D49F}.dat

          Filesize

          3KB

          MD5

          c27c578718d7cf73de880235d5cab3f7

          SHA1

          1c9581afdbf2684b78b05cae7b0f2a5da11fcaf2

          SHA256

          f46a5bb6ebdf23bd63138b2344a47175def164b737295d9dd5a50df06ae754c2

          SHA512

          739765b759efa71b66fc1da158a8fe883f90d317a12596781be407a3b1816a4be9543e027e8f29b0656c65df390f2a2fae6c56c2fd4dbb442c8d38860ae26611

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver3228.tmp

          Filesize

          15KB

          MD5

          1a545d0052b581fbb2ab4c52133846bc

          SHA1

          62f3266a9b9925cd6d98658b92adec673cbe3dd3

          SHA256

          557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

          SHA512

          bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\9MFSIIMR\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Windows\SysWOW64\rundll32mgr.exe

          Filesize

          60KB

          MD5

          94f2f6ffbba8e7644668b51b39983916

          SHA1

          63357bbdf90101969117983dbc0d4ed0e713c4d7

          SHA256

          ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed

          SHA512

          d04430ceac70c6fa71d07d9ee82ac2bb5e6c0641d5c9e7e5a3ed39d342e8b198f367676516a55f0653e0b88635a027b9ad220e223145b8be8df281bb6faf7156

        • memory/3384-11-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-15-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-5-0x0000000000401000-0x0000000000404000-memory.dmp

          Filesize

          12KB

        • memory/3384-21-0x0000000000401000-0x0000000000404000-memory.dmp

          Filesize

          12KB

        • memory/3384-12-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-13-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-6-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-8-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-7-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3384-10-0x00000000001B0000-0x00000000001B1000-memory.dmp

          Filesize

          4KB

        • memory/3384-9-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3420-1-0x0000000010000000-0x0000000010071000-memory.dmp

          Filesize

          452KB

        • memory/3420-37-0x0000000010000000-0x0000000010071000-memory.dmp

          Filesize

          452KB

        • memory/3652-35-0x0000000000720000-0x0000000000721000-memory.dmp

          Filesize

          4KB

        • memory/3652-36-0x0000000000700000-0x0000000000701000-memory.dmp

          Filesize

          4KB

        • memory/4692-30-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4692-39-0x0000000000070000-0x0000000000071000-memory.dmp

          Filesize

          4KB

        • memory/4692-38-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4692-40-0x0000000077322000-0x0000000077323000-memory.dmp

          Filesize

          4KB

        • memory/4692-29-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4692-43-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4692-44-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4692-32-0x0000000000060000-0x0000000000061000-memory.dmp

          Filesize

          4KB

        • memory/4692-33-0x0000000077322000-0x0000000077323000-memory.dmp

          Filesize

          4KB

        • memory/4692-31-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4692-22-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB