Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2023 04:40

General

  • Target

    05a88ce8f9315aa7b3a1b1432b69217c.exe

  • Size

    52KB

  • MD5

    05a88ce8f9315aa7b3a1b1432b69217c

  • SHA1

    1a9b37d6162fe27a28f2d7104234aa34044300f1

  • SHA256

    30a49c6d2c9926d9165785e895befe3ecb6fc4c5f24965cfb379aaf2309a1fe1

  • SHA512

    58a0e5626c7cc533274a9e7df264ad85eee6a770489ae2397bbb87c7d9f8273f45d8857bb54629f6d156bb23d28eab199a1f9d0b550773d3dd3bf5433b0cab29

  • SSDEEP

    768:ubWnCwYQX6N1nfo1jskr/v/m89S3rkC6R+wibw52Tzp//:uh66NNwNskr3mbkC6R+Xp//

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05a88ce8f9315aa7b3a1b1432b69217c.exe
    "C:\Users\Admin\AppData\Local\Temp\05a88ce8f9315aa7b3a1b1432b69217c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Users\Admin\keioz.exe
      "C:\Users\Admin\keioz.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4416

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\keioz.exe

    Filesize

    52KB

    MD5

    4dec726b00bb0a4644f1ff300fbcd7cc

    SHA1

    720c6c07fd5c0d9ae2840e511fbacde75c6b3a86

    SHA256

    4584de6d26bf2d3aad83464c62face28fc2fae4ff663e307e81aafe6d33d0f12

    SHA512

    8caaa5db6a2f4af1a152a64cc88219b1c5cc047b79b719f9a58d1f0fa5a7bea16c4de8aa620c910108d2acb3da4e17f4758cea4010940a3f16171d0bbc00d928