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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
2.3 KiB
2.3 KiB
Fileless Malware Detection API Reference
Windows Event IDs for Fileless Detection
| Event ID | Log | Description |
|---|---|---|
| 4104 | PowerShell Operational | Script Block Logging (full script content) |
| 4103 | PowerShell Operational | Module Logging |
| 1 | Sysmon | Process Creation with command line |
| 8 | Sysmon | CreateRemoteThread (injection) |
| 10 | Sysmon | ProcessAccess (injection prep) |
| 19/20/21 | Sysmon | WMI Event Filter/Consumer/Binding |
| 7045 | System | New service installed |
python-evtx - Parse Windows Event Logs
import Evtx.Evtx as evtx
with evtx.Evtx("Security.evtx") as log:
for record in log.records():
xml = record.xml()
if "<EventID>4104</EventID>" in xml:
print(record.timestamp(), xml[:500])
Volatility 3 Commands
# Detect injected code (RWX memory, PE headers in non-image VADs)
vol3 -f memory.dmp windows.malfind
# List processes
vol3 -f memory.dmp windows.pslist
# Scan for hidden processes
vol3 -f memory.dmp windows.psscan
# List loaded DLLs
vol3 -f memory.dmp windows.dlllist --pid 1234
# Extract injected code
vol3 -f memory.dmp windows.malfind --dump --pid 1234
LOLBins Detection Patterns (Sysmon)
<!-- Sysmon config for LOLBin monitoring -->
<RuleGroup groupRelation="or">
<ProcessCreate onmatch="include">
<Image condition="end with">mshta.exe</Image>
<Image condition="end with">regsvr32.exe</Image>
<Image condition="end with">certutil.exe</Image>
<Image condition="end with">wmic.exe</Image>
<Image condition="end with">cmstp.exe</Image>
<Image condition="end with">msbuild.exe</Image>
</ProcessCreate>
</RuleGroup>
Suspicious PowerShell Indicators
-enc / -EncodedCommand → Base64-encoded command
IEX / Invoke-Expression → Dynamic code execution
Net.WebClient → Download cradle
DownloadString() → Remote script fetch
Reflection.Assembly → Reflective .NET loading
VirtualAlloc → Shellcode allocation
FromBase64String → Payload decoding
WMI Persistence Check
# List WMI event subscriptions
Get-WMIObject -Namespace root\Subscription -Class __EventFilter
Get-WMIObject -Namespace root\Subscription -Class __EventConsumer
Get-WMIObject -Namespace root\Subscription -Class __FilterToConsumerBinding