ID36 - SOC104
Malware Detected
LetsDefend alert triage practice
Alert Overview
Investigation
Initial Triage: Threat Intel
CTI lookup for hash f83fb9ce6a83da58b20685c1d7e1e546 shows it is flagged as ransomware, specifically Maze ransomware.
Log Management
Log management shows a single event within our timeline:
Outbound traffic from the host to 92.63.8[.]47 on port 443
The destination IP is flagged as malicious and associated with AS44558 – Netonline Bilisim Sirketi LTD
No inbound traffic to the host was observed.
Endpoint Security
No endpoint telemetry available — the security agent is not installed.
Playbook Execution
Select Threat Indicator
Other
Malware quarantined/cleaned?
Not Quarantined
Analyze Malware
Malicious
Check If Someone Requested the C2
accessed
HOST
quarantined
Add Artifacts
Artifact
Description
Type
f83fb9ce6a83da58b20685c1d7e1e546
Maze Ransomware
md5hash
92.63.8[.]47
C2 Server
IP address
Verdict
True Positive
Analyst Summary Report
Summary of findings
An alert was triggered for a file with the hash f83fb9ce6a83da58b20685c1d7e1e546, confirmed by threat intelligence as Maze ransomware. Log management captured outbound traffic from the infected host to a known C2 server(92.63.8[.]47) over port 443, which is associated with a flagged ASN (AS44558).
No endpoint telemetry was available due to the absence of a security agent on the machine. This limits visibility into local execution, process activity, and file system impact.
Despite the limited endpoint data, the combination of confirmed ransomware, C2 communication, and malicious IP reputation supports a true positive classification. The host has since been quarantined.
Remediation recommendations
- Conduct full forensic analysis of the affected host to identify the initial infection vector and assess damage.
Search for lateral movement or persistence mechanisms, given Maze ransomware’s known behavior of network propagation.
Update and enforce endpoint agent deployment policies to ensure full telemetry coverage across all systems.
Block C2 IP (92.63.8[.]47) and related indicators across firewall, proxy, and EDR platforms.
Reset credentials for users who had active sessions on the compromised machine.
Review backup integrity and isolate backup systems to prevent potential cross-contamination.
Notify relevant internal stakeholders and prepare for potential containment or disclosure procedures if sensitive data is affected.
More Alerts!
- ID-036 | SOC104 – Malware Detected | LetsDefend Walkthrough
- ID-045 | SOC114 – Malicious Attachment Detected | LetsDefend Walkthrough
- ID-014 | SOC104 – Malware Detected | LetsDefend Walkthrough
- ID-092 | SOC145 – Ransomware Detected | Letsdefend Walkthrough
- ID-257 | SOC282 – Phishing Alert | LetsDefend Walkthrough
SYN / ACK
Cybersecurity learner, log nerd, and TryHackMe badge hoarder. Let’s connect on LinkedIn before I get pulled into another packet capture.