Analysis

  • max time kernel
    143s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/08/2023, 21:34

General

  • Target

    rStorhertugs.exe

  • Size

    559KB

  • MD5

    21cc7025dfd2e0f475cf3cb39e4b9005

  • SHA1

    725ff1d1817fb6b176384f8d6938c29aae519dd8

  • SHA256

    e49fd2a82352a63a184372f5a71abf67cb1f9b709d4cf61d4de50194bdac57c3

  • SHA512

    5871c0831404d3f49c544403053ed9b319f489d1bfdf2387f79fda1d9ac38ffe8dfc2db4d5762c7bb17df695cd47beca030cd802c60f73c744b978b328b74e4f

  • SSDEEP

    12288:AtHb13bWiceH9L6CLmeRfXnH9lXLwRg2IiX/Pcvu:MbNrcy9uRSPH9l7ig2I4c2

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rStorhertugs.exe
    "C:\Users\Admin\AppData\Local\Temp\rStorhertugs.exe"
    1⤵
    • Loads dropped DLL
    PID:2576
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2576 -s 836
      2⤵
      • Program crash
      PID:3872
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2576 -ip 2576
    1⤵
      PID:460

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsy9B48.tmp\System.dll

            Filesize

            11KB

            MD5

            7399323923e3946fe9140132ac388132

            SHA1

            728257d06c452449b1241769b459f091aabcffc5

            SHA256

            5a1c20a3e2e2eb182976977669f2c5d9f3104477e98f74d69d2434e79b92fdc3

            SHA512

            d6f28ba761351f374ae007c780be27758aea7b9f998e2a88a542eede459d18700adffe71abcb52b8a8c00695efb7ccc280175b5eeb57ca9a645542edfabb64f1

          • memory/2576-144-0x0000000003130000-0x0000000004A19000-memory.dmp

            Filesize

            24.9MB

          • memory/2576-145-0x0000000003130000-0x0000000004A19000-memory.dmp

            Filesize

            24.9MB

          • memory/2576-146-0x0000000003130000-0x0000000004A19000-memory.dmp

            Filesize

            24.9MB