Analysis

  • max time kernel
    92s
  • max time network
    116s
  • 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 22:08

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 12 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 51 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:2040
    • 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:3396
      • 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:5044
        • 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:3936
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:4444
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 204
                6⤵
                • Program crash
                PID:2756
            • 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:1744
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1744 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:1964
            • 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:2300
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2300 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:1116
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3396 -s 608
          3⤵
          • Program crash
          PID:3144
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3396 -ip 3396
      1⤵
        PID:3592
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4444 -ip 4444
        1⤵
          PID:3456

        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

          4f899d8d9101a925d04502d4c9cac629

          SHA1

          9f2898954f3751c399932424a4024cdfb84d582e

          SHA256

          bc9befca6530ce34fd2551c54de60204db0a2ff2269c7b6e32289b99d34e7673

          SHA512

          2485eea275fee9bb670420ef83a8888a6793cd1c4022b4a6f05cfc7a701d6177233348c2dd0b0f1aa2796b1c0a4cbfedb8ea51a2ae996a9220a9379f278f2ca9

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

          Filesize

          404B

          MD5

          b7eafbf5fcc112fc15dd07628a9d9134

          SHA1

          bacd94255eab1d19cbf76cd257139854deccebb8

          SHA256

          d5a58df57a6d6baef223eacb3f6e56d278ffc7ef5db5cf107611efbb70df6052

          SHA512

          db987a43559a5da16e1ef277f84ab67a29b2a9884908f59441bace7e7cc2aaa63b71e574cf41f812af1c1a2566fc0f40b2d5bd8f85f4597efca81e54e5c665cf

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{918F9674-BD8C-11EF-91C3-EE8B2F3CE00B}.dat

          Filesize

          5KB

          MD5

          c9d75fee8c4f0ef176964bd7766bba00

          SHA1

          75d8f643516edac951308f88dc7e9fa1d5f65066

          SHA256

          9bba5e467b27e66766b62967dd2e0081f3379c00bc8bfdfffad7336b41f60890

          SHA512

          badf8316709cc25d56cf6ae4ffdd2dd63467c0650b9689225c358d73e22c5ad21d15c78125d1e752fabcb794f4450bfd4625a7325222afebc1a7c7e941620fb6

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{91945B9A-BD8C-11EF-91C3-EE8B2F3CE00B}.dat

          Filesize

          3KB

          MD5

          9a56e9cfb064cc75a1bb000b40ea1349

          SHA1

          589e5ddf785152bd45d267b0d7a4dfd613e07261

          SHA256

          adcf133c256c6014dd89e166f88088250e89614a3b56fb187483714be0f4d94c

          SHA512

          4d16263e61df543830c6f7c195526c2af0c5a2da43b2f3535162dfc794fd11303948e6b16d3f4c052496c11266ea684b5ccfc99a26979f8af9f8538216374f72

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver294D.tmp

          Filesize

          15KB

          MD5

          1a545d0052b581fbb2ab4c52133846bc

          SHA1

          62f3266a9b9925cd6d98658b92adec673cbe3dd3

          SHA256

          557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

          SHA512

          bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\XH3Z2ZON\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/3396-1-0x0000000010000000-0x0000000010071000-memory.dmp

          Filesize

          452KB

        • memory/3396-35-0x0000000010000000-0x0000000010071000-memory.dmp

          Filesize

          452KB

        • memory/3936-28-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3936-38-0x0000000077AA2000-0x0000000077AA3000-memory.dmp

          Filesize

          4KB

        • memory/3936-29-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3936-31-0x0000000077AA2000-0x0000000077AA3000-memory.dmp

          Filesize

          4KB

        • memory/3936-20-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3936-30-0x0000000000900000-0x0000000000901000-memory.dmp

          Filesize

          4KB

        • memory/3936-42-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3936-40-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3936-37-0x0000000000070000-0x0000000000071000-memory.dmp

          Filesize

          4KB

        • memory/3936-36-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/4444-33-0x00000000007B0000-0x00000000007B1000-memory.dmp

          Filesize

          4KB

        • memory/4444-34-0x0000000000790000-0x0000000000791000-memory.dmp

          Filesize

          4KB

        • memory/5044-7-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/5044-11-0x0000000002C50000-0x0000000002C51000-memory.dmp

          Filesize

          4KB

        • memory/5044-13-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/5044-15-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/5044-12-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/5044-9-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/5044-5-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/5044-6-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB