Malware Analysis

Malware analysis is the technical process of dissecting malicious software to understand its functionality, capabilities, propagation methods, and command-and-control infrastructure. When malware is discovered in your environment — whether through EDR alerts, antivirus detections, or incident response — analysis answers critical questions: Is this commodity malware or a custom implant suggesting a targeted attack? What data might it have exfiltrated? Does it have lateral movement capabilities? What persistence mechanisms has it established? Where does it communicate to, and can that communication be blocked? These answers are essential for effective remediation and prevention of reinfection.

Malware analysis operates at two levels: static analysis examines the malware binary without executing it, using disassemblers, decompilers, and string extraction tools to understand its structure and functionality; dynamic analysis executes the malware in a controlled sandbox environment to observe its actual behavior — what files it creates, what registry keys it modifies, what network connections it makes, and what system changes it implements. Advanced malware employs anti-analysis techniques including sandbox detection, code obfuscation, packing, and time-based evasion that require experienced analysts to circumvent. Custom malware used in targeted attacks is often not detectable by standard security tools until it is analyzed and signatures are developed.

BugFoe's malware analysts hold GREM (GIAC Reverse Engineering Malware) certification and use a combination of commercial and open-source tools in isolated, air-gapped analysis environments with no internet connectivity. Static analysis is performed using IDA Pro, Ghidra, and Cutter for disassembly and decompilation, with FLOSS for string deobfuscation and PE-bear for PE file analysis. Dynamic analysis uses purpose-built malware sandboxes instrumented with API monitoring, network capture, and file system monitoring. All analysis produces a detailed technical report, MITRE ATT&CK technique mappings, and actionable indicators of compromise — file hashes, network IOCs, and YARA rules — that can be immediately deployed to your security monitoring tools.