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Analysis

  • max time kernel
    122s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/01/2024, 12:44

General

  • Target

    40e4c083da257bb7c0bc04f7eeef4299.dll

  • Size

    120KB

  • MD5

    40e4c083da257bb7c0bc04f7eeef4299

  • SHA1

    16426053b1ad93fa3832b4f083f1bbce8d172992

  • SHA256

    40467bf55d34e7d3b57b18729154072ef2c310446a9814f82533ec004fc9be8d

  • SHA512

    65bcf4d25a0fd984303538ad1a8cdff0f096ab0cfc14e54e4419fa78cc2e1b56b980b8cca55cc63d6b6db97221345d7833519dc1e770a89f05276faf202542e9

  • SSDEEP

    3072:DJq8LGgTkFZ2wn/nVwpuqmWa8b8+vnCwjxZ/tC:D4EdkFoePVxua23nfjPtC

Malware Config

Signatures

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\40e4c083da257bb7c0bc04f7eeef4299.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2448
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\40e4c083da257bb7c0bc04f7eeef4299.dll,#1
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious behavior: EnumeratesProcesses
      PID:1784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1784-0-0x0000000000170000-0x000000000017B000-memory.dmp

    Filesize

    44KB

  • memory/1784-1-0x0000000010000000-0x000000001000A000-memory.dmp

    Filesize

    40KB

  • memory/1784-5-0x0000000000170000-0x000000000017B000-memory.dmp

    Filesize

    44KB

  • memory/1784-4-0x0000000010000000-0x000000001000A000-memory.dmp

    Filesize

    40KB

  • memory/1784-7-0x0000000000170000-0x000000000017B000-memory.dmp

    Filesize

    44KB