Incident Score: Analysis & Impact (HUNREDEXP1768977371)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Expel's Cyber Attack and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Expel Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Expel breach identified under incident ID HUNREDEXP1768977371.
The analysis begins with a detailed overview of Expel's information like the linkedin page: https://www.linkedin.com/company/expel, the number of followers: 31347, the industry type: Computer and Network Security and the number of employees: 477 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 754 and after the incident was 737 with a difference of -17 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 Expel and their customers.
On 01 November 2025, a cybersecurity incident called "Gootloader’s Sophisticated Anti-Detection Tactics Exposed in Latest Campaign" came to light.
A recent analysis by Huntress and Expel reveals how the Gootloader malware leverages deliberately malformed ZIP archives to evade security tools while maintaining functionality for targeted victims.
Impact assessments are still underway, so the full scope is not yet clear.
Formal response steps have not been shared publicly yet.
The case underscores how Ongoing, teams are taking away lessons such as Gootloader's use of malformed ZIP archives highlights the need for improved detection of non-standard archive structures and monitoring of script-based execution chains, and recommending next steps like Monitor for wscript.exe executing JScript from temp directories, Detect ZIP archives with >100 PK headers or truncated EOCD records and Inspect LNK files in Startup folders for persistence.
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.
MITRE ATT&CK® Correlation Analysis
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: Spearphishing Attachment (T1566.001) with high confidence (90%), supported by evidence indicating weaponized ZIP files containing malicious JScript payloads and User Execution: Malicious File (T1204.002) with high confidence (90%), supported by evidence indicating victims extract and run the JScript file. Under the Execution tactic, the analysis identified Command and Scripting Interpreter: JavaScript (T1059.007) with high confidence (90%), supported by evidence indicating windows Script Host (WScript) processes JScript from AppData\Local\Temp and Command and Scripting Interpreter: PowerShell (T1059.001) with high confidence (90%), supported by evidence indicating obfuscated PowerShell commands to establish C2 communications. Under the Persistence tactic, the analysis identified Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder (T1547.001) with high confidence (90%), supported by evidence indicating lNK shortcuts in the Startup folder referencing secondary scripts. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with high confidence (95%), supported by evidence indicating malformed ZIP archives with truncated EOCD records, randomized metadata, Obfuscated Files or Information: Indicator Removal from Tools (T1027.005) with high confidence (90%), supported by evidence indicating zIP archives bypass 7-Zip and WinRAR but work with Windows native utility, Masquerading: Match Legitimate Name or Location (T1036.005) with moderate to high confidence (80%), supported by evidence indicating indiana_Animal_Protection_Laws_Guide.js as malicious JScript payload, Deobfuscate/Decode Files or Information (T1140) with moderate to high confidence (80%), supported by evidence indicating xOR-encoded data blobs decoded by browsers to assemble ZIP structures, and Command and Scripting Interpreter: PowerShell (T1059.001) with moderate to high confidence (80%), supported by evidence indicating heavily obfuscated PowerShell commands. 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 powerShell processes establish command-and-control (C2) communications. Under the Privilege Escalation tactic, the analysis identified Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder (T1547.001) with moderate to high confidence (70%), supported by evidence indicating lNK shortcuts in Startup folder for persistence. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Expel Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/expel/incident/HUNREDEXP1768977371
- Expel CyberSecurity Rating page: https://www.rankiteo.com/company/expel
- Expel Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/hunredexp1768977371-huntress-rhysida-expel-cyber-attack-november-2025/
- Expel CyberSecurity Score History: https://www.rankiteo.com/company/expel/history
- Expel CyberSecurity Incident Source: https://cyberpress.org/gootloader-malware-low-detection-security-bypass/
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf