Windows 7 deprecation

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Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05/10/2024, 21:33

General

  • Target

    8d3f84db2d4da058e86a7bc180036e6b0e418375fe2652ebe263a22bc2421da0N.exe

  • Size

    40KB

  • MD5

    02cf9afbccd9a4856b6834a5980217e0

  • SHA1

    24603a1c319406373712d44017529c6d5d9218ae

  • SHA256

    8d3f84db2d4da058e86a7bc180036e6b0e418375fe2652ebe263a22bc2421da0

  • SHA512

    d50a2951fb9235b257891e12b072df619fc590e8ed84b7b040871a3750fe592e2948ca05a7ff232ed08807a381f2b989a5ef1a2dd453cbe2c73d6b491ed76b49

  • SSDEEP

    768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjU+Emkc4:e6q10k0EFjed6rqJ+6vghzwYu7vih9Gh

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 1 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d3f84db2d4da058e86a7bc180036e6b0e418375fe2652ebe263a22bc2421da0N.exe
    "C:\Users\Admin\AppData\Local\Temp\8d3f84db2d4da058e86a7bc180036e6b0e418375fe2652ebe263a22bc2421da0N.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Windows\microsofthelp.exe
      "C:\Windows\microsofthelp.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Drops file in Windows directory
      PID:1632

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\microsofthelp.exe

    Filesize

    40KB

    MD5

    97e3be1b5023dda2fb25fdcb71812639

    SHA1

    fd1f9809cea8f6db94116d86126c6ebbccf586bc

    SHA256

    a5a016af262739a2410d4b2b01b823c3db5a7230eca2dfbb9c404fa1917d4c5a

    SHA512

    ad3d9ea5d6bece333f18fac39dc8df74de5e3099738c839cadac1f089e5cffa9f112696d82f8b0d4199dffa649f062e55e08bf914ad7a0af9b02e008bccde73c

  • memory/1632-9-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1632-11-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1640-0-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1640-7-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB