Analysis

  • max time kernel
    150s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-09-2024 22:05

General

  • Target

    0f1c329b6d6a4bbcfdf9af38b7b02343e1c89c7dad4e00f34a78e6f524d65083N.exe

  • Size

    244KB

  • MD5

    0250932f1c0c335c166ecbe2150d2d70

  • SHA1

    9809dea2690123bcd386aaa8a79697282413ca71

  • SHA256

    0f1c329b6d6a4bbcfdf9af38b7b02343e1c89c7dad4e00f34a78e6f524d65083

  • SHA512

    98af696e5f023f7458a1c38eee26019ab062a52d5cec03b1f75684ef71b1a96f2213e24b23050ebb8c45ee3588d22d8b381b90ec84b7b47e5bc07d7343612212

  • SSDEEP

    768:zZ8buvNS3960BVJ14enGamr4YV7RiLklI9MMkkFXUG8sWEMg5blICkNnT2NoOLri:zOu+MORabaja3ataQ5qOBHyi9Zx0klo

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 52 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\0f1c329b6d6a4bbcfdf9af38b7b02343e1c89c7dad4e00f34a78e6f524d65083N.exe
    "C:\Users\Admin\AppData\Local\Temp\0f1c329b6d6a4bbcfdf9af38b7b02343e1c89c7dad4e00f34a78e6f524d65083N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\bsfoan.exe
      "C:\Users\Admin\bsfoan.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\bsfoan.exe

    Filesize

    244KB

    MD5

    37e45b1f5440a6a0697239c096b756c6

    SHA1

    42d2a53210a4b4970682bac8167e2a23eb6b06b6

    SHA256

    c812e0528cc0d02bc577e78129fe2bc158d87a7f8696b2995baf3eadf3bab621

    SHA512

    e4d04c1457008757c2cc113ee798030443955d187d790af9a37d0a0ac07906a02f70aa5970d174fe5d2a7c94405da20dce15041eaa01de810069aff6530b1aac