Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2022, 20:51

General

  • Target

    759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe

  • Size

    148KB

  • MD5

    0cef0cf6242749bf7ab2cbd76348932f

  • SHA1

    9cbf3ff12530132a306ece1e38d77dea5e965558

  • SHA256

    759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c

  • SHA512

    0164db85bbaa70986a61f90a31f487cc5252e244347396a7cbbaeaa8f119caabce51eade3cc8f52b90c4edc7969028e54253c9b3322f204a9e5a6a8c61c4a870

  • SSDEEP

    3072:6SeWqFzxgwMylAUR6UQUcJPPB5RPXsS+t9jiC4oQZiE4P:6dFzxgZVU49xEtlzWq

Score
10/10

Malware Config

Signatures

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

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

  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe
    "C:\Users\Admin\AppData\Local\Temp\759f3bdd47d4b28a72ac9a52e3b6cca8229b17b5b2539e4af9409c9d5745933c.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3348
    • C:\Users\Admin\yoicui.exe
      "C:\Users\Admin\yoicui.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
      PID:4944

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\yoicui.exe

    Filesize

    148KB

    MD5

    0311bf8fb9b06a0f79cc9a98e3e31d76

    SHA1

    eae6ef3a3715b778b16635c966ca32e56dc260fa

    SHA256

    0e9d3a9464a59bbd369705662560704cbcf0f02e063c329a9320b90bb0416682

    SHA512

    b26efc2dc4371ae342347d78efdd82ce8ae0a64455d98a59db7dd1adccafb2978a4b1df84ebf06abaf967b2af88f6a3d953cb34c043581832e56b6a76798cf16

  • C:\Users\Admin\yoicui.exe

    Filesize

    148KB

    MD5

    0311bf8fb9b06a0f79cc9a98e3e31d76

    SHA1

    eae6ef3a3715b778b16635c966ca32e56dc260fa

    SHA256

    0e9d3a9464a59bbd369705662560704cbcf0f02e063c329a9320b90bb0416682

    SHA512

    b26efc2dc4371ae342347d78efdd82ce8ae0a64455d98a59db7dd1adccafb2978a4b1df84ebf06abaf967b2af88f6a3d953cb34c043581832e56b6a76798cf16