Southeast Asia Public Policy Institute Breach Incident Score: Analysis & Impact (SOU1770159284)

In this Rankiteo incident briefing, we review the Southeast Asia Public Policy Institute breach identified under incident ID SOU1770159284.

The analysis begins with a detailed overview of Southeast Asia Public Policy Institute's information like the linkedin page: https://www.linkedin.com/company/southeast-asia-public-policy-institute, the number of followers: 1708, the industry type: Think Tanks and the number of employees: 4 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 748 and after the incident was 730 with a difference of -18 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Southeast Asia Public Policy Institute and their customers.

A newly reported cybersecurity incident, "HoneyMyte APT Expands Cyber-Espionage Operations with Advanced Malware Upgrades in 2025", has drawn attention.

The HoneyMyte APT group (also known as Mustang Panda or Bronze President) has intensified its cyber-espionage campaigns across Asia and Europe, with Southeast Asia as the primary target.

The disruption is felt across the environment, affecting Government networks, Windows-based systems, and exposing Government and sensitive organizational data, browser credentials, clipboard data, system reconnaissance data.

Formal response steps have not been shared publicly yet.

The case underscores how and recommending next steps like Monitor for CoolClient variants, PlugX, ToneShell, and associated malware families in high-risk regions. Implement detection for DLL sideloading, clipboard monitoring, and HTTP proxy credential sniffing.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

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 Phishing (T1566) with moderate confidence (60%), supported by evidence indicating attack_vector includes Phishing, Replication Through Removable Media (T1091) with moderate to high confidence (80%), supported by evidence indicating tonedisk/SnakeDisk USB worms deployed, and User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating dLL sideloading abuse via legitimate software. Under the Execution tactic, the analysis identified Command and Scripting Interpreter: PowerShell (T1059.001) with high confidence (90%), supported by evidence indicating powerShell scripts (1.bat, Ttraazcs32.ps1, t.ps1) used, Command and Scripting Interpreter: Windows Command Shell (T1059.003) with moderate to high confidence (80%), supported by evidence indicating remoteShellS.dll executes hidden cmd.exe processes, and User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating dLL sideloading via legitimate apps (VLC, BitDefender). Under the Persistence tactic, the analysis identified Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder (T1547.001) with moderate to high confidence (80%), supported by evidence indicating registry modifications for persistence, Scheduled Task/Job: Scheduled Task (T1053.005) with high confidence (90%), supported by evidence indicating scheduled task (ComboxResetTask) for persistence, and Event Triggered Execution: Image File Execution Options Injection (T1546.012) with moderate confidence (60%), supported by evidence indicating dLL sideloading abuse for persistence. Under the Privilege Escalation tactic, the analysis identified Abuse Elevation Control Mechanism: Bypass User Account Control (T1548.002) with high confidence (90%), supported by evidence indicating uAC bypass via passuac mode in CoolClient and Exploitation for Privilege Escalation (T1068) with moderate confidence (50%), supported by evidence indicating kernel-mode rootkit (ToneShell) implies privilege escalation. Under the Defense Evasion tactic, the analysis identified Masquerading: Match Legitimate Name or Location (T1036.005) with high confidence (90%), supported by evidence indicating dLL sideloading via Sangfor, BitDefender, VLC, Impair Defenses: Disable or Modify Tools (T1562.001) with moderate to high confidence (70%), supported by evidence indicating kernel-mode rootkit (ToneShell) evades detection, Obfuscated Files or Information (T1027) with moderate to high confidence (80%), supported by evidence indicating xOR encryption (key 0xAC) for logs, and Indicator Removal: File Deletion (T1070.004) with moderate confidence (60%), supported by evidence indicating malware likely deletes traces post-exfiltration. Under the Credential Access tactic, the analysis identified OS Credential Dumping: LSASS Memory (T1003.001) with moderate confidence (50%), supported by evidence indicating browser credential theft implies LSASS access, Credentials from Password Stores: Credentials from Web Browsers (T1555.003) with high confidence (90%), supported by evidence indicating browser credential stealers for Chrome/Edge/Chromium, Two-Factor Authentication Interception (T1111) with moderate confidence (60%), supported by evidence indicating hTTP proxy credential sniffing (Proxy-Authorization headers), and Browser Session Hijacking (T1185) with moderate to high confidence (70%), supported by evidence indicating clipboard monitoring (GetClipboardData API). Under the Discovery tactic, the analysis identified Account Discovery: Local Account (T1087.001) with moderate to high confidence (80%), supported by evidence indicating serviceMgrS.dll enumerates Windows services, File and Directory Discovery (T1083) with high confidence (90%), supported by evidence indicating ttraazcs32.ps1 searches for recent documents, System Network Configuration Discovery (T1016) with moderate to high confidence (80%), supported by evidence indicating 1.bat scans networks for system data, and Process Discovery (T1057) with moderate to high confidence (70%), supported by evidence indicating clipboard monitoring captures process IDs. Under the Collection tactic, the analysis identified Screen Capture (T1113) with moderate confidence (60%), supported by evidence indicating clipboard monitoring captures window titles, Data from Local System (T1005) with high confidence (90%), supported by evidence indicating document theft via PowerShell scripts, Clipboard Data (T1115) with high confidence (90%), supported by evidence indicating coolClient monitors clipboard via GetClipboardData, and Data from Information Repositories: Confluence (T1213.001) with moderate confidence (50%), supported by evidence indicating government data likely stored in repositories. Under the Command and Control tactic, the analysis identified Application Layer Protocol: Web Protocols (T1071.001) with moderate to high confidence (80%), supported by evidence indicating hTTP proxy credential sniffing implies C2 over HTTP, Proxy: External Proxy (T1090.002) with moderate to high confidence (70%), supported by evidence indicating tCP tunneling and reverse proxy operations, and Ingress Tool Transfer (T1105) with moderate to high confidence (80%), supported by evidence indicating malware downloads compression tools via scripts. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating data exfiltration via FTP and Pixeldrain, Exfiltration Over Web Service: Exfiltration to Cloud Storage (T1567.002) with moderate to high confidence (80%), supported by evidence indicating data uploaded to Pixeldrain using API tokens, and Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with moderate to high confidence (70%), supported by evidence indicating fTP used for exfiltration in 1.bat script. Under the Impact tactic, the analysis identified Defacement: Internal Defacement (T1491.001) with lower confidence (40%), supported by evidence indicating cyber-espionage may include subtle defacement and Data Manipulation: Stored Data Manipulation (T1565.001) with moderate confidence (50%), supported by evidence indicating persistent access enables data manipulation. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.