Reverse Engineering Malware in Minutes Instead of Hours
Malware analysis has always been one of the more specialized skills in security operations. Figuring out what a suspicious script is actually doing, not what it claims to be doing, typically requires deep technical expertise, several tools, and a lot of patience. Most SOCs don’t have a deep bench of that expertise on every shift.
As attackers lean harder into obfuscation and scripted, multi-stage attack chains, that gap becomes a real liability. Security Copilot gives analysts a faster, more accessible path through it.
Why This Work Eats So Much Time
Traditional malware analysis is a slow, sequential process: decode the payload, trace execution paths, identify indicators of compromise, and correlate all of it against other telemetry before reaching a conclusion. Manual phishing and script triage can commonly run anywhere from 20 minutes to several hours per case, and Microsoft’s own documentation on its Phishing Triage Agent puts manual review at up to 30 minutes per alert, before you even get to the harder cases involving obfuscated code.
That’s time an active incident doesn’t give you. The window between a phishing click and account takeover is frequently measured in minutes to a few hours, not days, which means investigation speed isn’t a productivity metric. It’s a containment metric.
Obfuscation Is Doing Exactly What It’s Designed to Do
Threat actors know analysts are the bottleneck, so they lean into it. Base64 encoding, layered PowerShell obfuscation, and multi-stage scripted attack chains are all built to slow down human review and buy the attacker more time inside the environment. The more effort it takes to decode a script, the longer that window stays open.
Where Security Copilot Changes the Math
Security Copilot doesn’t eliminate the need for analyst judgment, but it collapses the mechanical part of the work, decoding, parsing, initial behavioral assessment, from hours down to minutes. Instead of manually unwinding an obfuscated command, an analyst gets a plain-language summary of what the script is attempting to do and where the red flags are, then applies their expertise to what happens next.
That’s the same pattern behind Microsoft’s Phishing Triage Agent, which uses LLM-based analysis to assess reported emails, determine intent, and classify submissions, offloading the repetitive first pass so analysts can focus on the cases that actually need their attention.
Decoding Base64 and Obfuscated PowerShell, Fast
One of the most immediately useful applications is decoding encoded PowerShell commands. Security Copilot can unpack Base64 content, surface execution patterns, and present the findings in a structured, readable format, substantially cutting down the manual translation work before the real investigation even starts. On a case that would otherwise eat 30 minutes to an hour of an analyst’s shift, that’s meaningful time back.
Context Turns Code Into a Complete Picture
Understanding what a script does is only half the job. The other half is understanding what it touched, which users, which devices, which identities, and what that means for organizational risk. Security Copilot correlates technical findings against broader telemetry automatically, so analysts aren’t manually stitching together the code-level analysis and the blast-radius analysis separately.
Scaling Expertise to Junior Analysts
Advanced malware and script analysis has historically been gated behind years of experience. By translating obfuscated code into plain-language explanations, Security Copilot lets junior analysts meaningfully participate in investigations that used to require immediate escalation. That doesn’t replace the need for senior expertise, it means senior analysts spend their time on the cases that genuinely require it, instead of every case that merely looks complicated.
Faster Analysis Means Faster Containment
Every minute spent decoding a script by hand is a minute an attacker keeps their foothold. Faster analysis directly shortens the window for containment and remediation, and in an environment where account takeover can follow a phishing click within hours, that window is the whole game.
Where This Is Headed
As attack chains get more sophisticated, the SOCs that keep pace won’t be the ones with the most manual expertise, they’ll be the ones who’ve paired that expertise with AI that can process obfuscated code at machine speed.
If your team is still manually decoding PowerShell and Base64 payloads case by case, there’s a faster path, and it doesn’t require replacing your analysts to get there. See how we help organizations operationalize threat protection and AI & automation across the Microsoft security stack, or talk to us about where Security Copilot could shorten your investigation timelines.
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