Incident Score: Analysis & Impact (GOO1768649952)

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating low-privileged users to escalate privileges by hijacking Service Agent roles and Trusted Relationship (T1199) with moderate to high confidence (80%), supported by evidence indicating exploit these through confused deputy scenarios. Under the Privilege Escalation tactic, the analysis identified Valid Accounts: Cloud Accounts (T1078.004) with high confidence (95%), supported by evidence indicating default configurations allow low-privileged users to escalate privileges and Abuse Elevation Control Mechanism: Bypass User Account Control (T1548.002) with moderate to high confidence (70%), supported by evidence indicating hijacking Service Agent roles with broad project permissions. Under the Execution tactic, the analysis identified Exploitation for Client Execution (T1203) with moderate to high confidence (80%), supported by evidence indicating remote code execution (RCE) and credential theft from instance metadata and Command and Scripting Interpreter (T1059) with moderate to high confidence (70%), supported by evidence indicating upload malicious code (e.g., a reverse shell) disguised as a legitimate tool. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with high confidence (90%), supported by evidence indicating attackers extract the agent’s token, enabling read-write access to GCS and BigQuery and Unsecured Credentials: Cloud Instance Metadata API (T1552.005) with moderate to high confidence (80%), supported by evidence indicating credential theft from instance metadata. Under the Collection tactic, the analysis identified Data from Information Repositories (T1213) with high confidence (90%), supported by evidence indicating access to LLM memories, chat logs, and Cloud Storage (GCS) buckets and Data from Local System (T1005) with moderate to high confidence (70%), supported by evidence indicating gaining access to LLM memories, chat logs. Under the Exfiltration tactic, the analysis identified Transfer Data to Cloud Account (T1537) with moderate to high confidence (80%), supported by evidence indicating read-write access to GCS and BigQuery and Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating possible via malicious tool injection or token theft. Under the Defense Evasion tactic, the analysis identified Modify Cloud Compute Infrastructure (T1578) with moderate to high confidence (80%), supported by evidence indicating malicious tool injection via aiplatform.reasoningEngines.update permissions and Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (70%), supported by evidence indicating google classified them as working as intended. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.