Inside Water Barghests Rapid Exploit

Subject: Inside Water Barghests Rapid Exploit

Tactics: TA0040 Impact, TA0042 Resource Development

Technique: T1190 Exploit Public-Facing Application, T1592 Gather Victim Host Information, T1082 System Information Discovery

Procedure:

Water Barghest actively scans the internet for vulnerable IoT devices, particularly those with known vulnerabilities or default credentials. Upon identifying a vulnerable device, they exploit it to gain initial access. This may involve exploiting vulnerabilities in web interfaces, using default or weak credentials, or leveraging unpatched software flaws.

Vulnerability: EAV0007 When adversaries interact with engagement environments and personas, their future capability, targeting, and/or infrastructure requirements are vulnerable to influence.

Engagement Opportunity:

• Exploits Vulnerability: Lack of Vulnerability Scanning (EAV0015)
• Engagement Opportunity: Deploy honeypots mimicking vulnerable IoT devices to attract Water Barghest’s activity. This allows for studying their attack methods, tools, and infrastructure, and potentially identifying their C2 servers. (T1592 – Gather Victim Host Information, T1082 – System Information Discovery)

Threat Actor: Water Barghest (financially motivated)

Threat Objective:

Compromise IoT devices to build a botnet for DDoS attacks, cryptojacking, or data exfiltration.

Deception Opportunity:

Create a deceptive network environment with decoy IoT devices and fake data to lure Water Barghest into a controlled environment, delaying their attack and gathering intelligence.

Sensor Data Placement: User-Mode

Observable Level: Core to Some Implementations of (Sub-)Technique

Scoring Rationale:

Network traffic analysis can reveal Water Barghest’s scanning activity and exploitation attempts. While not all implementations of T1190 rely on network observables, it’s common for this threat actor.

Link to Report:

Link to Report II.:

Additional Comments:

Water Barghest is known for its rapid exploitation of newly discovered vulnerabilities, making timely patching and vulnerability management crucial for organizations.

Possible elements:

MSG (Pseudocode):

# Malicious Sub-Graph Standard

# Node Format:
# [Node ID]: [Tactic] - [Technique] - [Procedure] ([Observable Level])

# Edge Format:
# [Source Node ID] --> [Destination Node ID] ([Exploited Vulnerability])

# Water Barghest Attack Graph

: Resource Development (TA0042) - Exploit Public-Facing Applications (T1190) - Scan for vulnerable IoT devices (Core to Some Implementations of (Sub-)Technique)[1]
: Initial Access - External Remote Services (T1133) - Exploit vulnerability to gain device control (Core to Pre-Existing Tool)
: Command and Control - Application Layer Protocol: HTTP (T1071) - Communicate with C2 server using HTTP (Core to Adversary-Brought Tool)

1 --> 2 (Lack of Vulnerability Scanning)
2 --> 3 (Lack of Network Monitoring)

# Pseudocode Standard

# Function Format:
# function [Tactic]_[Technique]([Input]):
# [Procedure]
# return [Output]

# Water Barghest Pseudocode

function Resource_Development_Exploit_Public-Facing_Applications():
# Scan internet for vulnerable IoT devices
# Identify devices with known vulnerabilities or default credentials
return vulnerable_device_list

function Initial_Access_External_Remote_Services(vulnerable_device_list):
# Exploit vulnerability to gain control of devices
return compromised_devices

function Command_and_Control_Application_Layer_Protocol(compromised_devices):
# Establish connection to C2 server using HTTP
# Receive commands and send data
return success