Merge pull request #228854 from Shereen-Bhar/patch-19

Update Suspicion of Malicious Activity alerts to critical

Author: prmerger-automator[bot]

articles/defender-for-iot/organizations/alert-engine-messages.md

@@ -245,30 +245,30 @@ Malware engine alerts describe detected malicious network activity.
 
 | Title | Description| Severity | Category | MITRE ATT&CK <br> tactics and techniques |
 |--|--|--|--|--|
-| **Connection Attempt to Known Malicious IP** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. <br><br>Triggered by both OT and Enterprise IoT network sensors.  | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Initial Access <br> - Command And Control <br><br> **Techniques:** <br> - T0883: Internet Accessible Device <br> - T0884: Connection Proxy |
+| **Connection Attempt to Known Malicious IP** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. <br><br>Triggered by both OT and Enterprise IoT network sensors.  | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Initial Access <br> - Command And Control <br><br> **Techniques:** <br> - T0883: Internet Accessible Device <br> - T0884: Connection Proxy |
 | **Invalid SMB Message (DoublePulsar Backdoor Implant)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - LateralMovement <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services |
-| **Malicious Domain Name Request** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. <br><br>Triggered by both OT and Enterprise IoT network sensors.  | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Initial Access <br> - Command And Control <br><br> **Techniques:** <br> - T0883: Internet Accessible Device <br> - T0884: Connection Proxy |
-| **Malware Test File Detected - EICAR AV Success** | An EICAR AV test file was detected in traffic between two devices (over any transport - TCP or UDP). The file isn't malware. It's used to confirm that the antivirus software is installed correctly. Demonstrate what happens when a virus is found, and check internal procedures and reactions when a virus is found. Antivirus software should detect EICAR as if it were a real virus. | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Discovery <br><br> **Techniques:** <br> - T0842: Network Sniffing |
+| **Malicious Domain Name Request** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. <br><br>Triggered by both OT and Enterprise IoT network sensors.  | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Initial Access <br> - Command And Control <br><br> **Techniques:** <br> - T0883: Internet Accessible Device <br> - T0884: Connection Proxy |
+| **Malware Test File Detected - EICAR AV Success** | An EICAR AV test file was detected in traffic between two devices (over any transport - TCP or UDP). The file isn't malware. It's used to confirm that the antivirus software is installed correctly. Demonstrate what happens when a virus is found, and check internal procedures and reactions when a virus is found. Antivirus software should detect EICAR as if it were a real virus. | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Discovery <br><br> **Techniques:** <br> - T0842: Network Sniffing |
 | **Suspicion of Conficker Malware** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Major | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - Impact <br><br> **Techniques:** <br> - T0826: Loss of Availability <br> - T0828: Loss of Productivity and Revenue <br> - T0847: Replication Through Removable Media |
 | **Suspicion of Denial Of Service Attack** | A source device attempted to initiate an excessive number of new connections to a destination device. This may indicate a Denial Of Service (DOS) attack against the destination device, and might interrupt device functionality, affect performance and service availability, or cause unrecoverable errors. <br><br> Threshold: 3000 attempts in 1 minute | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Inhibit Response Function <br><br> **Techniques:** <br> - T0814: Denial of Service |
-| **Suspicion of Malicious Activity** | Suspicious network activity was detected. This activity may be associated with an attack that triggered known 'Indicators of Compromise' (IOCs). Alert metadata should be reviewed by the security team. | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Lateral Movement <br><br> **Techniques:** <br> - T0867: Lateral Tool Transfer |
+| **Suspicion of Malicious Activity** | Suspicious network activity was detected. This activity may be associated with an attack that triggered known 'Indicators of Compromise' (IOCs). Alert metadata should be reviewed by the security team. | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Lateral Movement <br><br> **Techniques:** <br> - T0867: Lateral Tool Transfer |
 | **Suspicion of Malicious Activity (BlackEnergy)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Command And Control <br><br> **Techniques:** <br> - T0869: Standard Application Layer Protocol |
 | **Suspicion of Malicious Activity (DarkComet)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Impact <br><br> **Techniques:** <br> - T0882: Theft of Operational Information |
 | **Suspicion of Malicious Activity (Duqu)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Impact <br><br> **Techniques:** <br> - T0882: Theft of Operational Information |
 | **Suspicion of Malicious Activity (Flame)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Collection <br> - Impact  <br><br> **Techniques:** <br> - T0882: Theft of Operational Information <br> - T0811: Data from Information Repositories |
 | **Suspicion of Malicious Activity (Havex)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Collection <br> - Discovery <br> - Inhibit Response Function <br><br> **Techniques:** <br> - T0861: Point & Tag Identification <br> - T0846: Remote System Discovery <br> - T0814: Denial of Service |
 | **Suspicion of Malicious Activity (Karagany)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Impact <br><br> **Techniques:** <br> - T0882: Theft of Operational Information |
 | **Suspicion of Malicious Activity (LightsOut)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Evasion <br><br> **Techniques:** <br> - T0849: Masquerading |
-| **Suspicion of Malicious Activity (Name Queries)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. <br><br> Threshold: 25 name queries in 1 minute | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Command And Control <br><br> **Techniques:** <br> - T0884: Connection Proxy |
+| **Suspicion of Malicious Activity (Name Queries)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. <br><br> Threshold: 25 name queries in 1 minute | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Command And Control <br><br> **Techniques:** <br> - T0884: Connection Proxy |
 | **Suspicion of Malicious Activity (Poison Ivy)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - Lateral Movement  <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services |
 | **Suspicion of Malicious Activity (Regin)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - Lateral Movement <br> - Impact <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services <br> - T0882: Theft of Operational Information |
 | **Suspicion of Malicious Activity (Stuxnet)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - Lateral Movement <br> - Impact <br><br> **Techniques:** <br> - T0818: Engineering Workstation Compromise <br> - T0866: Exploitation of Remote Services <br> - T0831: Manipulation of Control |
 | **Suspicion of Malicious Activity (WannaCry) [*](#ot-alerts-turned-off-by-default)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Major | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - Lateral Movement <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services <br> - T0867: Lateral Tool Transfer |
 | **Suspicion of NotPetya Malware - Illegal SMB Parameters Detected** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Initial Access <br> - Lateral Movement <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services |
 | **Suspicion of NotPetya Malware - Illegal SMB Transaction Detected** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malware | **Tactics:** <br> - Lateral Movement <br><br> **Techniques:** <br> - T0867: Lateral Tool Transfer |
-| **Suspicion of Remote Code Execution with PsExec** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Lateral Movement <br> - Initial Access <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services |
-| **Suspicion of Remote Windows Service Management [*](#ot-alerts-turned-off-by-default)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Initial Access <br><br> **Techniques:** <br> - T0822: NetworkExternal Remote Services |
-| **Suspicious Executable File Detected on Endpoint** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Major | Suspicion of Malicious Activity | **Tactics:** <br> - Evasion <br> - Inhibit Response Function <br><br> **Techniques:** <br> - T0851: Rootkit |
+| **Suspicion of Remote Code Execution with PsExec** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Lateral Movement <br> - Initial Access <br><br> **Techniques:** <br> - T0866: Exploitation of Remote Services |
+| **Suspicion of Remote Windows Service Management [*](#ot-alerts-turned-off-by-default)** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Initial Access <br><br> **Techniques:** <br> - T0822: NetworkExternal Remote Services |
+| **Suspicious Executable File Detected on Endpoint** | Suspicious network activity was detected. This activity may be associated with an attack exploiting a method used by known malware. | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Evasion <br> - Inhibit Response Function <br><br> **Techniques:** <br> - T0851: Rootkit |
 | **Suspicious Traffic Detected [*](#ot-alerts-turned-off-by-default)** | Suspicious network activity was detected. This activity may be associated with an attack that triggered known 'Indicators of Compromise' (IOCs). Alert metadata should be reviewed by the security team | Critical | Suspicion of Malicious Activity | **Tactics:** <br> - Discovery <br><br> **Techniques:** <br> - T0842: Network Sniffing |
 | **Backup Activity with Antivirus Signatures**  | Traffic detected between the source device and the destination backup server triggered this alert. The traffic includes backup of antivirus software that might contain malware signatures. This is most likely legitimate backup activity. | Warning | Backup | **Tactics:** <br> - Impact <br><br> **Techniques:** <br> - T0882: Theft of Operational Information |