Windows 7 deprecation

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Analysis

  • max time kernel
    119s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/08/2024, 21:42

General

  • Target

    fd8c83fbf34b0f39bdfd5c38fc91ae20N.exe

  • Size

    37KB

  • MD5

    fd8c83fbf34b0f39bdfd5c38fc91ae20

  • SHA1

    540af4a5a46b67b5114f92c4f3f100254aa9bead

  • SHA256

    4d7d9f8ed119b091130276f0b99a2a6a427ea66c77845c9fff907e414cd57c53

  • SHA512

    124b5c446c73f7efcdf187d2b6cbb4117fa260d534ea25f247d94525aab0c7cf5fe45bfbe03eb5231a0b35137f6a86a5622a0ecf9ecaa0ab48b8b42a20b98ee5

  • SSDEEP

    768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjU+Emkcy:e6q10k0EFjed6rqJ+6vghzwYu7vih9GL

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 2 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd8c83fbf34b0f39bdfd5c38fc91ae20N.exe
    "C:\Users\Admin\AppData\Local\Temp\fd8c83fbf34b0f39bdfd5c38fc91ae20N.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Windows\microsofthelp.exe
      "C:\Windows\microsofthelp.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:3660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\microsofthelp.exe

    Filesize

    37KB

    MD5

    5d68884aea3debf17fbe95adb1ba9dee

    SHA1

    6cc5363b79f909789f4d6ae40d99cb435156d8d7

    SHA256

    0065392ef1525df1d5184a89963718220c83ca115d9a15ea860ec93e57f13497

    SHA512

    bc1bd7bd88884b0268757f6ce1f57cb8d03b92a8f27a219ace994b72912815c4c4c3810c28efdffe21c56ee2d54ce3a75472690d7c667ff17cde0b4201a6c6e8

  • memory/1636-0-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1636-6-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/3660-7-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB