
malware-detection-and-removal
Identify, analyze, and document malware distribution repositories masquerading as legitimate software
- Installs
- 953
- Last 24h
- —
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- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/reason-machines/security-skills --skill malware-detection-and-removal- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads malware-detection-and-removal automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Malware Detection and Removal
Skill by ara.so — Security Skills collection.
⚠️ WARNING: This Repository is Malicious
This project is NOT legitimate Bitdefender software. It is a malware distribution repository disguising itself as cracked security software. This skill documents how to identify and handle such threats.
What This Repository Actually Is
This is a malicious repository that:
- Falsely claims to provide "cracked" Bitdefender Total Security
- Uses SEO-optimized keywords to attract victims searching for pirated software
- Contains no actual code (empty README, no source files)
- Uses deceptive topics like "defender-bypass" and "thread-hijacking"
- Artificially inflates stars to appear legitimate
- Distributes malware, ransomware, or information stealers
Identification Patterns
Red Flags for Malware Repositories
-
Suspicious Description Keywords:
- "Crack", "Keygen", "Loader", "Pre-Activated"
- "License Key", "Full Version", "Activation"
- Version numbers that don't exist (2026 when current year is earlier)
-
Repository Characteristics:
- No actual source code or empty README
- Recent creation with rapid star accumulation
- No legitimate commit history
- Topics include "bypass" and exploit terminology
- NOASSERTION license or no license
-
Deceptive Naming:
- Legitimate software name + "Crack"/"Download"
- Version numbers in future dates
- Setup/Installer in project name
Security Analysis Workflow
Step 1: Repository Investigation
package main
import (
"fmt"
"strings"
)
// RepositoryAnalysis contains threat indicators
type RepositoryAnalysis struct {
Name string
Description string
Topics []string
HasReadme bool
StarRate float64
ThreatScore int
}
// AnalyzeThreatLevel calculates risk score
func (r *RepositoryAnalysis) AnalyzeThreatLevel() int {
score := 0
// Check for crack/piracy keywords
crackKeywords := []string{"crack", "keygen", "loader", "pre-activated", "license key"}
for _, keyword := range crackKeywords {
if strings.Contains(strings.ToLower(r.Description), keyword) {
score += 20
}
}
// Check for bypass/exploit topics
dangerousTopics := []string{"defender-bypass", "thread-hijacking", "exploit-mitigation"}
for _, topic := range r.Topics {
for _, dangerous := range dangerousTopics {
if topic == dangerous {
score += 15
}
}
}
// High star rate with no content
if r.StarRate > 3 && !r.HasReadme {
score += 25
}
// No README is suspicious for "software" repo
if !r.HasReadme {
score += 20
}
return score
}
func main() {
repo := RepositoryAnalysis{
Name: "Bitdefender-Total-Security-Crack-2026",
Description: "Bitdefender Total Security Download | Crack | Keygen",
Topics: []string{"defender-bypass", "malware-scanner", "thread-hijacking"},
HasReadme: false,
StarRate: 4.0,
}
threatScore := repo.AnalyzeThreatLevel()
fmt.Printf("Repository: %s\n", repo.Name)
fmt.Printf("Threat Score: %d/100\n", threatScore)
if threatScore > 50 {
fmt.Println("⚠️ HIGH RISK: Likely malware distribution")
} else if threatScore > 30 {
fmt.Println("⚠️ MEDIUM RISK: Suspicious patterns detected")
} else {
fmt.Println("✓ Low risk")
}
}
Step 2: Content Verification
package main
import (
"fmt"
"os"
"path/filepath"
)
// VerifyRepositoryContent checks for legitimate source code
func VerifyRepositoryContent(repoPath string) (bool, []string) {
issues := []string{}
hasSourceCode := false
// Check for actual code files
sourceExts := []string{".go", ".py", ".js", ".cpp", ".c"}
err := filepath.Walk(repoPath, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if !info.IsDir() {
ext := filepath.Ext(path)
for _, sourceExt := range sourceExts {
if ext == sourceExt {
hasSourceCode = true
return nil
}
}
// Check for suspicious executables
if ext == ".exe" || ext == ".dll" || ext == ".bat" {
issues = append(issues, fmt.Sprintf("Suspicious executable: %s", path))
}
}
return nil
})
if err != nil {
issues = append(issues, fmt.Sprintf("Error scanning: %v", err))
}
if !hasSourceCode {
issues = append(issues, "No source code found - likely malware dropper")
}
return hasSourceCode, issues
}
Protection Measures
For Developers
Never clone or run code from suspicious repositories:
# DO NOT run these commands on suspicious repos:
# git clone <suspicious-repo>
# go run main.go
# ./setup.exe
# Instead, report the repository
Reporting Malicious Repositories
-
GitHub Security Advisory:
- Navigate to the repository
- Click "Security" tab
- Report as malware distribution
-
Using GitHub API (with proper authentication):
package main
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"os"
)
type AbuseReport struct {
URL string `json:"url"`
Reason string `json:"reason"`
Details string `json:"details"`
}
func ReportMaliciousRepository(repoURL string) error {
// Use GitHub's abuse reporting
// Requires authentication via GITHUB_TOKEN env var
report := AbuseReport{
URL: repoURL,
Reason: "malware-distribution",
Details: "Repository distributing malware disguised as cracked software",
}
jsonData, err := json.Marshal(report)
if err != nil {
return err
}
// This is a conceptual example - GitHub abuse reports go through web form
fmt.Printf("Report prepared for: %s\n", repoURL)
fmt.Printf("Report details: %s\n", string(jsonData))
fmt.Println("Visit https://support.github.com/contact/report-abuse to submit")
return nil
}
Legitimate Security Software Verification
How to Obtain Real Bitdefender
-
Official Sources Only:
- https://www.bitdefender.com (official website)
- Authorized resellers listed on official site
- Official app stores (Microsoft Store, etc.)
-
Verification Checklist:
- ✓ HTTPS on official domain
- ✓ Valid code signing certificate
- ✓ Checksum verification from official source
- ✓ No "crack" or "keygen" mentions
Code Signing Verification (Windows)
package main
import (
"fmt"
"os/exec"
)
// VerifyCodeSignature checks Windows executable signature
func VerifyCodeSignature(filePath string) (bool, error) {
// Use PowerShell to verify signature
cmd := exec.Command("powershell", "-Command",
fmt.Sprintf("(Get-AuthenticodeSignature '%s').Status", filePath))
output, err := cmd.CombinedOutput()
if err != nil {
return false, err
}
status := string(output)
isValid := status == "Valid\n"
fmt.Printf("Signature status: %s", status)
return isValid, nil
}
Common Attack Vectors
1. Fake Installers
- Executable files disguised as setup programs
- Actually contain trojans, ransomware, or miners
2. Information Stealers
- Harvest browser credentials, cryptocurrency wallets
- Keyloggers and clipboard hijackers
3. Ransomware
- Encrypt user files and demand payment
- Often packaged with "cracks"
Best Practices
- Never download cracked software - always use legitimate sources
- Use official package managers when available (apt, brew, winget)
- Verify checksums from official sources
- Enable Windows Defender or legitimate antivirus
- Keep software updated through official channels
- Use $ANTIVIRUS_API_KEY environment variables for legitimate security tools
Educational Use Only
This skill is for security research and education to help identify and report malware distribution channels. Never use information to create or distribute malware.
Resources
- GitHub Security: https://github.com/security
- Report Abuse: https://support.github.com/contact/report-abuse
- Bitdefender Official: https://www.bitdefender.com
- MITRE ATT&CK Framework: https://attack.mitre.org
FAQ
What does the malware-detection-and-removal skill do?
Identify, analyze, and document malware distribution repositories masquerading as legitimate software
How do I install malware-detection-and-removal?
Run npx skills add https://github.com/reason-machines/security-skills --skill malware-detection-and-removal in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/malware-detection-and-removal/ (personal) or .claude/skills/malware-detection-and-removal/ (project).
Which AI agents can use malware-detection-and-removal?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is malware-detection-and-removal safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains malware-detection-and-removal?
It is published by reason-machines in reason-machines/security-skills. It has 953 recorded installs.
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