Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2023 05:45

General

  • Target

    090f5e1fc96bdcac4b62013c7dd1355b.dll

  • Size

    144KB

  • MD5

    090f5e1fc96bdcac4b62013c7dd1355b

  • SHA1

    8a482b1311016c17fd439d8241e07fee49b9358f

  • SHA256

    5c77aa10fe11b7d26547b0ec4b526b93f37ec549ddd153b24a8e706169e7a60c

  • SHA512

    5158aaed72803791c3d7c520b3248238337d071e7b5a3e3f71dc6835bc220e89cf553b7ac81246115488d35a9429d2353eb8a62bf58c26d2cdaada44c0e2afcb

  • SSDEEP

    1536:1ibToqp78CcWuDSPCw8YhekzkuGWq5A//J1Z6sQflFde0vms2:1ibTTp78CcWmSvFekzk7WJ1Zg9/e/

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 11 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 2 IoCs
  • 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\090f5e1fc96bdcac4b62013c7dd1355b.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\090f5e1fc96bdcac4b62013c7dd1355b.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3236
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:3700
        • C:\Program Files (x86)\Microsoft\WaterMark.exe
          "C:\Program Files (x86)\Microsoft\WaterMark.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of UnmapMainImage
          • Suspicious use of WriteProcessMemory
          PID:3500
          • 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:4420
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4420 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:716
          • 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:4976
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4976 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4104
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3236 -s 608
        3⤵
        • Program crash
        PID:3548
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe
    1⤵
      PID:2384
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 216
        2⤵
        • Program crash
        PID:1364
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2384 -ip 2384
      1⤵
        PID:3468
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3236 -ip 3236
        1⤵
          PID:620

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          78KB

          MD5

          ac35ba07df1251d85e53fb6a93d92d6d

          SHA1

          098a4eb59c30187e8e22cf2f43c5c4b534895055

          SHA256

          21a6438f3c51d17e903e3f9e9f6a324b053061c25bee47c53d6399bf058bf349

          SHA512

          b355b1632abcf3f308aa636bdab82fcdf2bb967349b86d27037f7435434ac7474579c81bf8b00140a3fe554675b992b0e60e1e10bfa257a8355d45068b28b5be

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{240F9372-A47F-11EE-9ECD-C6E29C351F1E}.dat

          Filesize

          5KB

          MD5

          a493e18691f8c14a0c038d0b618a6463

          SHA1

          da1c63d996badaa840240029d173aa69d3acc6b9

          SHA256

          57918157db07e0d7b1c26c874b916b9d696d8e264a587e16c830db443826fe91

          SHA512

          2bb88c89d56a25bdf364e751c4c77f5444c1f86ef85ff7d4e80178583b75f21873d7fd8fc8a7a7dccf77b5fdf861c1cabe83c8f0391192cf24f9562833981dba

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{2416BB99-A47F-11EE-9ECD-C6E29C351F1E}.dat

          Filesize

          3KB

          MD5

          1b982b0c6957e71b8a4842627de80082

          SHA1

          cde4055bae3169d81931ee91656763f5f0f1f744

          SHA256

          186352e3d7a6f97a5084a4b69d48b0db48082b393198b85262cb505a20e0e492

          SHA512

          3ec9750cf9f44df585ca6425be301bb85fc8b0993ed1263f49c18dc0fe03f92dda18c13c3a66fc98e430c9fac761ad1b5672e7a4e5502d5d97ece1673b8f268d

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verC7A5.tmp

          Filesize

          15KB

          MD5

          1a545d0052b581fbb2ab4c52133846bc

          SHA1

          62f3266a9b9925cd6d98658b92adec673cbe3dd3

          SHA256

          557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

          SHA512

          bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

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

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Windows\SysWOW64\rundll32mgr.exe

          Filesize

          103KB

          MD5

          0ff8c1c8de1f818a51512f4d894e30d1

          SHA1

          bd99a343ea5ca5ebdd7207651478a8425054716a

          SHA256

          7cc54785e229b1605103e3219969939eb80f106e9edca3cb380917ac33526d28

          SHA512

          da23767aa25ba5c1bb55c338fa82b1b60853c83fd1e4af28cc023fdd1405b46717bc58137d7bfe7a3a581dcd23de0520ab6ace88434b8cf35b3a0278f516dfd2

        • memory/2384-32-0x0000000000A50000-0x0000000000A51000-memory.dmp

          Filesize

          4KB

        • memory/2384-33-0x0000000000A30000-0x0000000000A31000-memory.dmp

          Filesize

          4KB

        • memory/3236-1-0x000000006D080000-0x000000006D0A4000-memory.dmp

          Filesize

          144KB

        • memory/3236-34-0x000000006D080000-0x000000006D0A4000-memory.dmp

          Filesize

          144KB

        • memory/3500-35-0x0000000077972000-0x0000000077973000-memory.dmp

          Filesize

          4KB

        • memory/3500-36-0x0000000000070000-0x0000000000071000-memory.dmp

          Filesize

          4KB

        • memory/3500-29-0x0000000000060000-0x0000000000061000-memory.dmp

          Filesize

          4KB

        • memory/3500-28-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3500-30-0x0000000077972000-0x0000000077973000-memory.dmp

          Filesize

          4KB

        • memory/3500-40-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3500-39-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3500-25-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-11-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-14-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-12-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-8-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-9-0x00000000001B0000-0x00000000001B1000-memory.dmp

          Filesize

          4KB

        • memory/3700-10-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-7-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3700-5-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB