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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
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API Reference: Detecting Credential Dumping with EDR
T1003 Sub-Techniques
| Sub-technique | Method | Key Evidence |
|---|---|---|
| T1003.001 | LSASS Memory | Sysmon Event ID 10, GrantedAccess mask |
| T1003.002 | SAM Registry | reg.exe save HKLM\SAM, Event ID 4656 |
| T1003.003 | NTDS.dit | vssadmin shadow copy, ntdsutil ifm |
| T1003.004 | LSA Secrets | Registry HKLM\SECURITY |
| T1003.005 | Cached Creds | DCC2 hashes in SECURITY hive |
| T1003.006 | DCSync | Event ID 4662, replication GUIDs |
python-evtx Library
import Evtx.Evtx as evtx
with evtx.Evtx("Sysmon.evtx") as log:
for record in log.records():
xml = record.xml()
# Parse EventID, SourceImage, TargetImage, GrantedAccess
LSASS Suspicious Access Masks
| GrantedAccess | Meaning |
|---|---|
| 0x1010 | PROCESS_VM_READ + QUERY_INFO (Mimikatz) |
| 0x1038 | VM_READ + QUERY_INFO + VM_WRITE |
| 0x1FFFFF | PROCESS_ALL_ACCESS |
DCSync Replication GUIDs
DS-Replication-Get-Changes: 1131f6aa-9c07-11d1-f79f-00c04fc2dcd2
DS-Replication-Get-Changes-All: 1131f6ad-9c07-11d1-f79f-00c04fc2dcd2
DS-Replication-Get-Changes-In-Filtered: 89e95b76-444d-4c62-991a-0facbeda640c
Splunk SPL - LSASS Access Detection
index=sysmon EventCode=10 TargetImage="*\\lsass.exe"
| where NOT match(SourceImage, "(csrss|services|svchost|lsm|MsMpEng)\\.exe$")
| where GrantedAccess IN ("0x1010", "0x1038", "0x1FFFFF")
| table _time SourceImage GrantedAccess Computer SourceUser
KQL - Microsoft Defender for Endpoint
DeviceProcessEvents
| where FileName in ("mimikatz.exe", "procdump.exe", "nanodump.exe")
or ProcessCommandLine has_any ("sekurlsa", "lsadump", "MiniDump")
| project Timestamp, DeviceName, FileName, ProcessCommandLine, AccountName
CLI Usage
python agent.py --sysmon-log Sysmon.evtx
python agent.py --security-log Security.evtx
python agent.py --command-log process_audit.log