Analysis

  • max time kernel
    96s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2024 02:18

General

  • Target

    5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll

  • Size

    289KB

  • MD5

    f5850b4e99e56d3b5d770bbed9612360

  • SHA1

    3daf10ae37ddd9bc97980e5f7b6a3372c7c8fea1

  • SHA256

    5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214d

  • SHA512

    7eab147d565d2b66da3df6dcafe4319c9d249c8794f96366dade199423559f737c1f7d908ea61e7dc6be861cb13110726bc9c3a50206b7d44269180d276b4e13

  • SSDEEP

    6144:PCIGPj038tAgFMldWNX+DubRkLZ2+KcAfv5CSkS7:Uj038t/FMldW4DTZ2+KccC9S7

Malware Config

Signatures

  • Ramnit

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

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

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 30 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2416
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3488
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • 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:3704
        • 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:4924
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4924 CREDAT:17410 /prefetch:2
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4964
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3488 -s 608
        3⤵
        • Program crash
        PID:3712
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3488 -ip 3488
    1⤵
      PID:4452

    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

      b2aa45f623926b85e0f56ae10c80d660

      SHA1

      eaea3693d301b43a70ea9eb4b620a8d5602b2ae3

      SHA256

      3ecd204886f46d6dcc6d0b4043e2045e0ec1ee1e87bd83132694ad4cd528562c

      SHA512

      4f9a46459ce1d6f974dbcd7b5aecf5d32db0b52d2ccb5a5d076a5109470d4084310394865be66fa7dbc07ed613c677da9c64f28ec659a88b45f1258d5a967595

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DQ67RYHS\suggestions[1].en-US

      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      121KB

      MD5

      ee77f2a82f0ada3db67768b4fb688c71

      SHA1

      5165e088484d73d5100a92bcfab9f6ea367407fe

      SHA256

      71793760f681181db3e67b9f9231b1dc67dd896b431f4b13d920d876fb8edbb9

      SHA512

      40e7a4dfedbbc8e936684b3bf498d2d47b05b2fe8af13f21e89dca5fac8aa1d9caa354120c4d0308295b35f9f6a9a2c2fd0eae488b33e665cb27431f3b2148f1

    • memory/3488-1-0x0000000010000000-0x000000001004D000-memory.dmp

      Filesize

      308KB

    • memory/3488-21-0x0000000010000000-0x000000001004D000-memory.dmp

      Filesize

      308KB

    • memory/3704-14-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-10-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-20-0x0000000000401000-0x0000000000405000-memory.dmp

      Filesize

      16KB

    • memory/3704-18-0x0000000077CD2000-0x0000000077CD3000-memory.dmp

      Filesize

      4KB

    • memory/3704-16-0x0000000000420000-0x0000000000421000-memory.dmp

      Filesize

      4KB

    • memory/3704-13-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-12-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-17-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-9-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-8-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-6-0x0000000000401000-0x0000000000405000-memory.dmp

      Filesize

      16KB

    • memory/3704-15-0x0000000000400000-0x000000000041A000-memory.dmp

      Filesize

      104KB

    • memory/3704-11-0x00000000006D0000-0x00000000006D1000-memory.dmp

      Filesize

      4KB

    • memory/3704-7-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB

    • memory/3704-5-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB