Analysis

  • max time kernel
    16s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05/10/2024, 01:53

General

  • Target

    b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll

  • Size

    544KB

  • MD5

    003dbddc2b4d41825a920081a907eaf0

  • SHA1

    166ff4158ec03a589660017ed0ba35c0ca31e79e

  • SHA256

    b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64

  • SHA512

    09fe14395b4a0b0cf2413403701d639f6a0b23224fc80f96177199b80fb92eaed5168cc0a91689111f7967f5044c7733a277b74f20553b281900cf1b44277f6f

  • SSDEEP

    12288:DhpUrEIZJqr1AkBWwNa5R0EYl795/amaX3QXaPKU5gqKQ:D/jG01NHXaPOvQ

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 2 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 WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1860
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2276
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 232
        3⤵
        • Program crash
        PID:1880

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\~TMA100.tmp

          Filesize

          1.2MB

          MD5

          d124f55b9393c976963407dff51ffa79

          SHA1

          2c7bbedd79791bfb866898c85b504186db610b5d

          SHA256

          ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

          SHA512

          278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

        • \Users\Admin\AppData\Local\Temp\~TMA140.tmp

          Filesize

          1.1MB

          MD5

          9b98d47916ead4f69ef51b56b0c2323c

          SHA1

          290a80b4ded0efc0fd00816f373fcea81a521330

          SHA256

          96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

          SHA512

          68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

        • \Windows\SysWOW64\rundll32mgr.exe

          Filesize

          84KB

          MD5

          797ea3998080a8d64bd071ac749c2285

          SHA1

          24e7d2db6d27265a936c72b16a14b31910a55df6

          SHA256

          cc2bd6be44d951965e960882aa128f0aa18e805e33a4cf99952ca5387007a1a5

          SHA512

          8656020cd52e46902058ce6eca6d823e8a84228cef10c30af05c48353c159e510baed333e19c29d25bd9e6e0a5bcdcfa1dcf053cf8544ad4bfe11392efdc088c

        • memory/1860-1-0x0000000010000000-0x0000000010089000-memory.dmp

          Filesize

          548KB

        • memory/1860-0-0x0000000010000000-0x0000000010089000-memory.dmp

          Filesize

          548KB

        • memory/1860-4-0x0000000010000000-0x0000000010089000-memory.dmp

          Filesize

          548KB

        • memory/1860-20-0x0000000010000000-0x0000000010089000-memory.dmp

          Filesize

          548KB

        • memory/2276-13-0x0000000000400000-0x000000000042D000-memory.dmp

          Filesize

          180KB

        • memory/2276-12-0x0000000001D90000-0x0000000001E50000-memory.dmp

          Filesize

          768KB

        • memory/2276-19-0x0000000000400000-0x000000000042D000-memory.dmp

          Filesize

          180KB