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Offline Lemonde  
#1 Posted : 14 September 2021 18:45:02(UTC)
Lemonde

Rank: Advanced Member

Groups: Registered
Joined: 08/01/2017(UTC)
Posts: 726
United Kingdom
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Contact form errors - are these hacker trying to spam people from our websites?

Log Name: Application
Source: ASP.NET 4.0.30319.0
Date: 14/09/2021 17:15:34
Event ID: 1309
Task Category: Web Event
Level: Warning
Keywords: Classic
User: N/A
Computer: server.domain.suffix
Description:
Event code: 3003
Event message: A validation error has occurred.
Event time: 14/09/2021 17:15:34
Event time (UTC): 14/09/2021 16:15:34
Event ID: 906792d9ce9a4cdc94b4526ba7f3d01a
Event sequence: 836
Event occurrence: 5
Event detail code: 0

Application information:
Application domain: /LM/W3SVC/33/ROOT-1-xxx
Trust level: Full
Application Virtual Path: /
Application Path: E:\Websites\www\domain2016\
Machine name: server

Process information:
Process ID: 14260
Process name: w3wp.exe
Account name: IIS APPPOOL\domain2016

Exception information:
Exception type: HttpRequestValidationException
Exception message: A potentially dangerous Request.Form value was detected from the client (messagetext="...ай свои <a href=https://ussr...").
at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection)
at System.Web.HttpValueCollection.EnsureKeyValidated(String key)
at System.Web.HttpValueCollection.Get(String name)
at System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.contact_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)



Request information:
Request URL: https://www.domain.suffix:443/contact.aspx
Request path: /contact.aspx
User host address: 178.34.160.12
User:
Is authenticated: False
Authentication Type:
Thread account name: IIS APPPOOL\domain2016

Thread information:
Thread ID: 116
Thread account name: IIS APPPOOL\domain2016
Is impersonating: False
Stack trace: at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection)
at System.Web.HttpValueCollection.EnsureKeyValidated(String key)
at System.Web.HttpValueCollection.Get(String name)
at System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.contact_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)


Custom event details:

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="ASP.NET 4.0.30319.0" />
<EventID Qualifiers="32768">1309</EventID>
<Level>3</Level>
<Task>3</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2021-09-14T16:15:34.000000000Z" />
<EventRecordID>2614200</EventRecordID>
<Channel>Application</Channel>
<Computer>server.domain.suffix</Computer>
<Security />
</System>
<EventData>
<Data>3003</Data>
<Data>A validation error has occurred.</Data>
<Data>14/09/2021 17:15:34</Data>
<Data>14/09/2021 16:15:34</Data>
<Data>906792d9ce9a4cdc94b4526ba7f3d01a</Data>
<Data>836</Data>
<Data>5</Data>
<Data>0</Data>
<Data>/LM/W3SVC/33/ROOT-1-xxx</Data>
<Data>Full</Data>
<Data>/</Data>
<Data>E:\Websites\www\domain2016\</Data>
<Data>server</Data>
<Data>
</Data>
<Data>14260</Data>
<Data>w3wp.exe</Data>
<Data>IIS APPPOOL\domain2016</Data>
<Data>HttpRequestValidationException</Data>
<Data>A potentially dangerous Request.Form value was detected from the client (messagetext="...ай свои &lt;a href=https://ussr...").
at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection)
at System.Web.HttpValueCollection.EnsureKeyValidated(String key)
at System.Web.HttpValueCollection.Get(String name)
at System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.contact_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)

</Data>
<Data>https://www.domain.suffix:443/contact.aspx</Data>
<Data>/contact.aspx</Data>
<Data>178.34.160.12</Data>
<Data>
</Data>
<Data>False</Data>
<Data>
</Data>
<Data>IIS APPPOOL\domain2016</Data>
<Data>116</Data>
<Data>IIS APPPOOL\domain2016</Data>
<Data>False</Data>
<Data> at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection)
at System.Web.HttpValueCollection.EnsureKeyValidated(String key)
at System.Web.HttpValueCollection.Get(String name)
at System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.contact_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)
</Data>
</EventData>
</Event>
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