Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2024, 22:01

General

  • Target

    76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll

  • Size

    258KB

  • MD5

    fe245609196ce4266a2e2105b6bafac0

  • SHA1

    8f878a52f96c493a2cd3924fd87f2e867cc3ca2d

  • SHA256

    76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2aceb

  • SHA512

    7267e1db624800c1c1ac5c7db4a02ddb7a0ac9d148af2b232c0c5ce85bd90fb96c060d9b7f064fed1aa547b1eebab4fb2b6c9d54d9b47c6455cb82a4d3c0277d

  • SSDEEP

    3072:rwDmd9B62lcxtzCqc5ZyTvmhRQnuWAs4Jln5jX8KSOmBeMrm9slo0aof87:f98xtzM5QrmhR/Vln5jMKayuGPe87

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 4 IoCs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1148
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll,#1
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4132
        • C:\Windows\SysWOW64\rundll32mgr.exe
          "C:\Windows\SysWOW64\rundll32mgr.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2564
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2564 -s 304
            5⤵
            • Program crash
            PID:1580
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2564 -ip 2564
    1⤵
      PID:1180

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\~TM68EB.tmp

            Filesize

            1.6MB

            MD5

            4f3387277ccbd6d1f21ac5c07fe4ca68

            SHA1

            e16506f662dc92023bf82def1d621497c8ab5890

            SHA256

            767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

            SHA512

            9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

          • C:\Windows\SysWOW64\rundll32mgr.exe

            Filesize

            148KB

            MD5

            a758bae992041958e59e16e303fccb6e

            SHA1

            ed836b5a0d9af7107b86969691078bf9eebf9a3c

            SHA256

            393f0b4ef739ec6b1f6eb242586d40e7d927211d6c6100fa1f3642a76a83b615

            SHA512

            8e4efadbe72e6a6eec55a81d075fc903c32f46ca950989c7029c3df3bb6a7adef97d69bbc5d93fff38dc5aed18fa011efbb31d39f440f2003b73ff5a280bf48a

          • memory/1192-1-0x00000000627F0000-0x0000000062835000-memory.dmp

            Filesize

            276KB

          • memory/2564-13-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/2564-15-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/2564-14-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/2564-9-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/4132-5-0x0000000000400000-0x0000000000452000-memory.dmp

            Filesize

            328KB

          • memory/4132-6-0x00000000001C0000-0x00000000001C3000-memory.dmp

            Filesize

            12KB

          • memory/4132-19-0x0000000000400000-0x0000000000452000-memory.dmp

            Filesize

            328KB

          • memory/4132-18-0x00000000001C0000-0x00000000001C3000-memory.dmp

            Filesize

            12KB