Analysis

  • max time kernel
    15s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2024, 16:48

General

  • Target

    a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll

  • Size

    685KB

  • MD5

    86a7a160e257e190399d6059cacca0a0

  • SHA1

    665fff8e0f5455e37d21da18ae12421da5ef3572

  • SHA256

    a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ff

  • SHA512

    0f9dc3decf33fbd78513e2313ddbb8af70e378be520a398b18e96510dbfb1549074d2a67be218c9482feda5eaa45723fb615083a92ef4ddfc1fe3477e39d12b2

  • SSDEEP

    12288:FiDTDIO3IfnPZjcEBfsKYEZuROtto4aIJayoPJviaKYNVuI:YKnPZjcEBfsKYFuayoSsuI

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 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2088
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1652
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 180
          4⤵
          • Program crash
          PID:1376

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\~TMB136.tmp

          Filesize

          1.2MB

          MD5

          d124f55b9393c976963407dff51ffa79

          SHA1

          2c7bbedd79791bfb866898c85b504186db610b5d

          SHA256

          ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

          SHA512

          278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

        • \Users\Admin\AppData\Local\Temp\~TMB156.tmp

          Filesize

          1.1MB

          MD5

          9b98d47916ead4f69ef51b56b0c2323c

          SHA1

          290a80b4ded0efc0fd00816f373fcea81a521330

          SHA256

          96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

          SHA512

          68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

        • \Windows\SysWOW64\rundll32mgr.exe

          Filesize

          354KB

          MD5

          a8245f71e4e4aff10e574300abd2bcc2

          SHA1

          7ea3ae53a0697e526c6bc877b103b390af042d7a

          SHA256

          7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546

          SHA512

          8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978

        • memory/1652-12-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/1652-13-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/1652-20-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2088-9-0x00000000002E0000-0x000000000033C000-memory.dmp

          Filesize

          368KB

        • memory/2088-8-0x0000000010000000-0x00000000100B0000-memory.dmp

          Filesize

          704KB

        • memory/2088-10-0x00000000002E0000-0x000000000033C000-memory.dmp

          Filesize

          368KB

        • memory/2088-7-0x0000000010000000-0x00000000100B0000-memory.dmp

          Filesize

          704KB