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Analysis

  • max time kernel
    95s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2024, 14:41

General

  • Target

    921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe

  • Size

    1.0MB

  • MD5

    274cd54d172c7b050e86a1490eeacdc1

  • SHA1

    1cae02626a6632ef8499d780965c4e5a503575d3

  • SHA256

    921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de

  • SHA512

    bd5cf00f43a212fdb5f946b09039fac23dfb5fd7d16e46bd285a232597fa0a3467db059aaf7e49813e608b398cf059f39012bc0d5b215780a40dd5428650cbf4

  • SSDEEP

    24576:zKpsANa+fHl66lNHYWTS6/ZWS5vYLWyghjzojT:zKKAbl6046F4S5YLWlNEjT

Malware Config

Signatures

  • Ramnit

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

  • Ramnit family
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 8 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 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 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe
    "C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4360
    • C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe
      C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1948
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 264
        3⤵
        • Program crash
        PID:4928
    • C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe
      C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4272
      • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
        "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4104
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3948
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3948 CREDAT:17410 /prefetch:2
            5⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:3884
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1948 -ip 1948
    1⤵
      PID:2388

    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

      863881560832be6db3d7e95507b796d8

      SHA1

      bab29c682b73454cb94d1a0edfaae5fd64d076f6

      SHA256

      1b8c898d463e9947656d97610caa6068a39c17fae72baa9168113364b7f70063

      SHA512

      0556ac3e08e23d12ba2558e3e1320f8c7591359a003c6b98e3d93208361000c3fc25dc13e9f4a3575ef854bd903b32f62a36e541ba10de67f38663d8d8debbcb

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

      Filesize

      404B

      MD5

      4713ac7c55ac175ad8c99d3e14fb792e

      SHA1

      89fe6b22576d06998397d37580c35a8a87534314

      SHA256

      193ce1d2528980606f22c3cf3986656aefe2d8b20a1754762ebc0742ce78dac6

      SHA512

      7ee2f2289d65f3b2e941d213a52b0c33bfd4c18338fcf7ecacf7e171c2d68c619f97304c0068f8b81b1df6ae94612063155e3c4666623b30bd28b6c8f4aa2646

    • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver459F.tmp

      Filesize

      15KB

      MD5

      1a545d0052b581fbb2ab4c52133846bc

      SHA1

      62f3266a9b9925cd6d98658b92adec673cbe3dd3

      SHA256

      557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

      SHA512

      bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\FQRZN8O7\suggestions[1].en-US

      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe

      Filesize

      55KB

      MD5

      ff5e1f27193ce51eec318714ef038bef

      SHA1

      b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

      SHA256

      fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

      SHA512

      c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

    • C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe

      Filesize

      105KB

      MD5

      dfb5daabb95dcfad1a5faf9ab1437076

      SHA1

      4a199569a9b52911bee7fb19ab80570cc5ff9ed1

      SHA256

      54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

      SHA512

      5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

    • C:\Windows\SysWOW64\ESPI11.dll

      Filesize

      120KB

      MD5

      6ded751b628ddb2a1c0c05f18858437c

      SHA1

      d1c98eb12d23975332ce59e17e8e1e3f3ad498fd

      SHA256

      6733977939a17dafb2e100c898fd0948095b6b33e8362aebe57ef7ea87db58ab

      SHA512

      554facab0a0d4b75504b0e3f9f8eda4ed0808e5397a214f3bf0c282542dfc2024c449b03c1aa9c1700307ce72ca88c1414650ec865b6e353b5d70f53aab10710

    • memory/1948-32-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB

    • memory/1948-8-0x0000000000490000-0x0000000000491000-memory.dmp

      Filesize

      4KB

    • memory/1948-6-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB

    • memory/4104-18-0x0000000000480000-0x0000000000481000-memory.dmp

      Filesize

      4KB

    • memory/4104-19-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/4104-20-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/4272-14-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/4272-10-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/4272-12-0x0000000000470000-0x000000000047F000-memory.dmp

      Filesize

      60KB

    • memory/4360-0-0x0000000000400000-0x0000000000531000-memory.dmp

      Filesize

      1.2MB

    • memory/4360-33-0x0000000000400000-0x0000000000531000-memory.dmp

      Filesize

      1.2MB