Analysis

  • max time kernel
    94s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-11-2024 01:48

General

  • Target

    b1555be9e0558eee155f1a81bff0e9d1c54254b599f8700df4671ca5bef96455.dll

  • Size

    2.3MB

  • MD5

    af835619ce35431075c984beb8a14e1c

  • SHA1

    3d75e872ff0b7b16f27cb2500148d6784a8043c1

  • SHA256

    b1555be9e0558eee155f1a81bff0e9d1c54254b599f8700df4671ca5bef96455

  • SHA512

    7968f3d41acdebf1b1cca7086ffa9c14c98bc41b404555736cd4aefaca2bfc8e300f12be184c47b4d3442c6a616ccb2b3091c0c94bfba38d7e5e0ed53084439c

  • SSDEEP

    49152:jU3U+ZYmxjpv7x4GFM/+b8dTMNh9Wr73h7NXSWEqNJO5hYTVMCRisKEj:jiU2YmxjpDx4Zo8dYNh9q73h7NXYkRic

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 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\b1555be9e0558eee155f1a81bff0e9d1c54254b599f8700df4671ca5bef96455.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4520
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1555be9e0558eee155f1a81bff0e9d1c54254b599f8700df4671ca5bef96455.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2840
      • 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:3216
        • 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:1028
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:5108
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 5108 -s 204
                6⤵
                • Program crash
                PID:100
            • 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:1152
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1152 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:4412
            • 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:4764
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4764 CREDAT:17410 /prefetch:2
                6⤵
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:5040
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2840 -s 624
          3⤵
          • Program crash
          PID:628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2840 -ip 2840
      1⤵
        PID:4172
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5108 -ip 5108
        1⤵
          PID:1744

        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

          042619486a0f512d0313c7b4fa6c9756

          SHA1

          9a3f09247b4b03933f23331b4f0207672c93e02a

          SHA256

          a231a95c194f54c33eef59babf53d979f0342fbc68bc52dbb524887fd378418d

          SHA512

          4b2b32d754d116b0609ca43b9ff54ad72c9e22ddbd617b5c94586a219c297c13823c0c2812937db6b2181382176bba46b2f3d37b4b29ae6f171e01ada216c257

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

          Filesize

          404B

          MD5

          81dd61cf1283cfaf64a04ccba0dd5e49

          SHA1

          3c96322145eb520e74d0eefa9b0d02234a4d8815

          SHA256

          8f2c1f78cd6ed83e22768789a4b313555ade7461ee44e465db9a25c2125d6eef

          SHA512

          bdef51b77378eda0ef18039a46790eac779386a635285971fb84ad904dacac6919db54ef6334f2a7a4cdc93d5f25347c2341bfad89bbdb3c1d66abc2c272f500

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{E592BE6D-9F05-11EF-AEE2-DEEFF298442C}.dat

          Filesize

          5KB

          MD5

          efae127fb23dec9294ac6241f99c8202

          SHA1

          0c0cb676171e74d0f6263422d08d889656dc506c

          SHA256

          46a43d986173de981051f51af5f6e62199d3f243ae7cf7cc4a9fc643c12c7493

          SHA512

          21eed9f3b6698745e89a463a60465c73fdc4a728953a3c943e0b6ab20b146b80095718fa312fbfb63febb9f55a22669a884abb1eeed460e5e0630cc54183b5d4

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{E595208D-9F05-11EF-AEE2-DEEFF298442C}.dat

          Filesize

          3KB

          MD5

          9b75a7d4a096c9932067424af47fa449

          SHA1

          8cf47f084486b4b72e5a8fa0d111ed64862d4ec6

          SHA256

          b101aa1ecf212456852184429a1ea2f95ffd836a627529c330a967e0b6c79f0e

          SHA512

          4f2e5281d231df8e38ec15cc1302fc2bb2af59e8a6b8d91bf0d4f23f33ca8e7ad9baaa8a7161a4739730e2f61767c49bfb9a2a595070b85e35db9fadbb5b0305

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver1930.tmp

          Filesize

          15KB

          MD5

          1a545d0052b581fbb2ab4c52133846bc

          SHA1

          62f3266a9b9925cd6d98658b92adec673cbe3dd3

          SHA256

          557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

          SHA512

          bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\M6JHG9EK\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Windows\SysWOW64\rundll32mgr.exe

          Filesize

          173KB

          MD5

          f603c2d3a1c6b4f856feca3d64d7cc40

          SHA1

          dc51f92df6a4556aec378dd3d9d9f9a2c47daf54

          SHA256

          56bac5d625d087ae6fd94c5f86780c648c6f3b217015900e7566051e931e32d6

          SHA512

          00c7220823a8e6a13483d4cf3a257b5236b82f2dc8e783d0ed393fabef2b0f246c35616d3edd070bf54280ea42fa3036a13d59c98250a67552be70606b344b78

        • memory/1028-36-0x0000000000070000-0x0000000000071000-memory.dmp

          Filesize

          4KB

        • memory/1028-37-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1028-42-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1028-41-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1028-27-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1028-30-0x0000000000060000-0x0000000000061000-memory.dmp

          Filesize

          4KB

        • memory/1028-29-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1028-32-0x00000000777C2000-0x00000000777C3000-memory.dmp

          Filesize

          4KB

        • memory/1028-28-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1028-38-0x00000000777C2000-0x00000000777C3000-memory.dmp

          Filesize

          4KB

        • memory/2840-35-0x0000000008000000-0x0000000008266000-memory.dmp

          Filesize

          2.4MB

        • memory/2840-3-0x0000000008000000-0x0000000008266000-memory.dmp

          Filesize

          2.4MB

        • memory/3216-7-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-6-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-12-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-13-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-10-0x00000000008B0000-0x00000000008B1000-memory.dmp

          Filesize

          4KB

        • memory/3216-9-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-14-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-8-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3216-4-0x0000000000400000-0x000000000042C000-memory.dmp

          Filesize

          176KB

        • memory/5108-33-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

          Filesize

          4KB

        • memory/5108-34-0x0000000000DA0000-0x0000000000DA1000-memory.dmp

          Filesize

          4KB