Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/03/2024, 23:32

General

  • Target

    94993854183634c5ace0444f97af99378c5d27f12035a18e773c97fde806a91b.dll

  • Size

    761KB

  • MD5

    b2f80fd20c35e479154fa781c9ae5a19

  • SHA1

    dcec90a124a43ac7af6b9a8a290f0f95720aa5b0

  • SHA256

    94993854183634c5ace0444f97af99378c5d27f12035a18e773c97fde806a91b

  • SHA512

    994a73274973391c7450f36dd1f2d84388a0033149f29676c9d93416b0a4a8fbf05a9183a3bf9db903de8658c2fc53fe072c7625e4c20ac586da4c5c132faa22

  • SSDEEP

    12288:o7ODNZNF+IqOIl8hLu6Mi202K+EY0zNLSJOljn01C:/ZNF+dXlt6Mi202KdzxACn00

Malware Config

Signatures

  • Ramnit

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

  • UPX dump on OEP (original entry point) 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • UPX packed file 2 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\94993854183634c5ace0444f97af99378c5d27f12035a18e773c97fde806a91b.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\94993854183634c5ace0444f97af99378c5d27f12035a18e773c97fde806a91b.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2192
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1800
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1800 -s 180
          4⤵
          • Program crash
          PID:2624

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\~TM5090.tmp

          Filesize

          1.2MB

          MD5

          d124f55b9393c976963407dff51ffa79

          SHA1

          2c7bbedd79791bfb866898c85b504186db610b5d

          SHA256

          ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

          SHA512

          278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

        • \Users\Admin\AppData\Local\Temp\~TM511D.tmp

          Filesize

          1.1MB

          MD5

          9b98d47916ead4f69ef51b56b0c2323c

          SHA1

          290a80b4ded0efc0fd00816f373fcea81a521330

          SHA256

          96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

          SHA512

          68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

        • \Windows\SysWOW64\rundll32mgr.exe

          Filesize

          157KB

          MD5

          2ad7467eeceedd64b8bd4f6e04c3cd49

          SHA1

          d6c5d9878dc49ae9b531d61283609e207154a921

          SHA256

          2aab17b2f18dfb70cd737b27b1a438ad8878889070a6e025b3684483054f60c9

          SHA512

          7a647d4a8de90d11cd5afb82ace8354869af0893f28afcf9491d1d4de421315d9a394a5d3462d88c0eff6c5a7a4ed41897d8d0498b59b4b7428ddbb61786be2a

        • memory/1800-21-0x0000000077C10000-0x0000000077C12000-memory.dmp

          Filesize

          8KB

        • memory/1800-24-0x0000000076580000-0x0000000076690000-memory.dmp

          Filesize

          1.1MB

        • memory/1800-27-0x0000000076580000-0x0000000076690000-memory.dmp

          Filesize

          1.1MB

        • memory/1800-15-0x0000000000220000-0x0000000000252000-memory.dmp

          Filesize

          200KB

        • memory/1800-26-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/1800-20-0x0000000077C10000-0x0000000077C11000-memory.dmp

          Filesize

          4KB

        • memory/1800-18-0x0000000077C0F000-0x0000000077C11000-memory.dmp

          Filesize

          8KB

        • memory/1800-25-0x0000000076580000-0x0000000076690000-memory.dmp

          Filesize

          1.1MB

        • memory/1800-14-0x0000000000400000-0x0000000000432000-memory.dmp

          Filesize

          200KB

        • memory/2192-5-0x0000000000200000-0x0000000000232000-memory.dmp

          Filesize

          200KB

        • memory/2192-0-0x0000000010000000-0x00000000100C3000-memory.dmp

          Filesize

          780KB

        • memory/2192-4-0x0000000010000000-0x00000000100C3000-memory.dmp

          Filesize

          780KB

        • memory/2192-1-0x0000000010000000-0x00000000100C3000-memory.dmp

          Filesize

          780KB

        • memory/2192-12-0x0000000000200000-0x0000000000232000-memory.dmp

          Filesize

          200KB