smartscreen.exe

File Path: C:\Windows\system32\smartscreen.exe
Description: Windows Defender SmartScreen

Hashes

Type	Hash
MD5	`ECB25D2AE78812CF3AC4C1FFF6696AF4`
SHA1	`1CA1ABDC815C06D187E5BA84950715DF162EF4F7`
SHA256	`F740FBA7B6791ABF3E000A6C4A04DDEE68D0A0722A3F5C0B44EB4E4D713BF7C9`
SHA384	`3104230C2296629A9241D0465882EE46902757A034FF10D4E1F82B8052450D54C1238D75EC5DC1108B182FF815FF104D`
SHA512	`6313AD8B68A1BA4CB4948A58F7395FE78F61A5018DE40FEC43A3EFEE1F4207B2579E02555CB3EEE3C60C529109A6293649C6D1F86CEB32040E2A32F66C2C3B2E`
SSDEEP	`49152:yf8eXaDPX9+m7rAIIqZA3IlvQpefUiHZDZdVeJ6aUFwNDVahv3nmUb:MI3VgNshv39b`
IMP	`C204EBCC4372F95F645AF852BFE02ADB`
PESHA1	`C372CE6D7B1F734D951CCD05A89190C47FFD77FA`
PE256	`00A098A9B958131AA6C7275D466E97E355D6D0ECC8BD5D34C8C863A99702B62F`

Runtime Data

Loaded Modules:

Path
C:\Windows\System32\advapi32.dll
C:\Windows\System32\bcrypt.dll
C:\Windows\System32\bcryptPrimitives.dll
C:\Windows\System32\combase.dll
C:\Windows\System32\CRYPT32.dll
C:\Windows\System32\GDI32.dll
C:\Windows\System32\gdi32full.dll
C:\Windows\System32\IMM32.DLL
C:\Windows\System32\kernel.appcore.dll
C:\Windows\System32\KERNEL32.DLL
C:\Windows\System32\KERNELBASE.dll
C:\Windows\System32\MSASN1.dll
C:\Windows\System32\msvcp_win.dll
C:\Windows\System32\msvcrt.dll
C:\Windows\SYSTEM32\ntdll.dll
C:\Windows\System32\RPCRT4.dll
C:\Windows\System32\sechost.dll
C:\Windows\System32\shcore.dll
C:\Windows\system32\smartscreen.exe
C:\Windows\System32\ucrtbase.dll
C:\Windows\System32\user32.dll
C:\Windows\System32\win32u.dll
C:\Windows\System32\WINTRUST.dll
C:\Windows\SYSTEM32\wintypes.dll
C:\Windows\System32\WS2_32.dll

Signature

Status: Signature verified.
Serial: 3300000266BD1580EFA75CD6D3000000000266
Thumbprint: A4341B9FD50FB9964283220A36A1EF6F6FAA7840
Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US

File Metadata

Original Filename: smartscreen.exe.mui
Product Name: Microsoft Windows Operating System
Company Name: Microsoft Corporation
File Version: 10.0.17763.1 (WinBuild.160101.0800)
Product Version: 10.0.17763.1
Language: English (United States)
Legal Copyright: Microsoft Corporation. All rights reserved.
Machine Type: 64-bit

File Scan

VirusTotal Detections: 1/71
VirusTotal Link: https://www.virustotal.com/gui/file/f740fba7b6791abf3e000a6c4a04ddee68d0a0722a3f5c0b44eb4e4d713bf7c9/detection/

Possible Misuse

The following table contains possible examples of smartscreen.exe being misused. While smartscreen.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source	Source File	Example	License
sigma	sysmon_suspicious_remote_thread.yml	`- '\smartscreen.exe'`	DRL 1.0
sigma	file_event_win_creation_system_file.yml	`- '\smartscreen.exe'`	DRL 1.0
sigma	proc_creation_win_system_exe_anomaly.yml	`- '\smartscreen.exe'`	DRL 1.0
atomic-red-team	T1553.005.md	<blockquote>Adversaries may abuse specific file formats to subvert Mark-of-the-Web (MOTW) controls. In Windows, when files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named `Zone.Identifier` with a specific value known as the MOTW.(Citation: Microsoft Zone.Identifier 2020) Files that are tagged with MOTW are protected and cannot perform certain actions. For example, starting in MS Office 10, if a MS Office file has the MOTW, it will open in Protected View. Executables tagged with the MOTW will be processed by Windows Defender SmartScreen that compares files with an allowlist of well-known executables. If the file in not known/trusted, SmartScreen will prevent the execution and warn the user not to run it.(Citation: Beek Use of VHD Dec 2020)(Citation: Outflank MotW 2020)(Citation: Intezer Russian APT Dec 2020)	MIT License. © 2018 Red Canary