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Analyzes Windows Security, System, and Sysmon event logs in Splunk with MITRE ATT&CK-mapped SPL queries to detect authentication attacks, privilege escalation, persistence, and lateral movement. For SOC threat investigations and forensics.
How this skill is triggered — by the user, by Claude, or both
Slash command
/cybersecurity-skills-zh:analyzing-windows-event-logs-in-splunkThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
以下情况使用本技能：
以下情况使用本技能：
不适用于 Linux/macOS 终端分析或纯网络调查。
WinEventLog:Security、WinEventLog:System、XmlWinEventLog:Microsoft-Windows-Sysmon/Operational）暴力破解检测（EventCode 4625 — 登录失败）：
index=wineventlog sourcetype="WinEventLog:Security" EventCode=4625
| stats count, dc(TargetUserName) AS unique_users, values(TargetUserName) AS targeted_users
by src_ip, Logon_Type, Status
| where count > 20
| eval attack_type = case(
Logon_Type=3, "Network Brute Force",
Logon_Type=10, "RDP Brute Force",
Logon_Type=2, "Interactive Brute Force",
1=1, "Other"
)
| eval status_meaning = case(
Status="0xc000006d", "Bad Username or Password",
Status="0xc000006a", "Incorrect Password (valid user)",
Status="0xc0000234", "Account Locked Out",
Status="0xc0000072", "Account Disabled",
1=1, Status
)
| sort - count
| table src_ip, attack_type, status_meaning, count, unique_users, targeted_users
密码喷洒（Password Spray）检测：
index=wineventlog sourcetype="WinEventLog:Security" EventCode=4625 Logon_Type=3
| bin _time span=10m
| stats dc(TargetUserName) AS unique_users, count AS total_attempts,
values(TargetUserName) AS users_targeted by src_ip, _time
| where unique_users > 10 AND total_attempts < unique_users * 3
| eval spray_confidence = if(unique_users > 25, "HIGH", "MEDIUM")
失败后成功登录（失陷指标（IOC）/Indicators of Compromise）：
index=wineventlog sourcetype="WinEventLog:Security"
(EventCode=4625 OR EventCode=4624) src_ip!="127.0.0.1"
| sort _time
| stats earliest(_time) AS first_seen, latest(_time) AS last_seen,
sum(eval(if(EventCode=4625,1,0))) AS failures,
sum(eval(if(EventCode=4624,1,0))) AS successes
by src_ip, TargetUserName, ComputerName
| where failures > 10 AND successes > 0
| eval time_to_success = round((last_seen - first_seen)/60, 1)
| sort - failures
新建管理员账户（T1136.001）：
index=wineventlog sourcetype="WinEventLog:Security" EventCode=4720
| join TargetUserName type=left [
search index=wineventlog EventCode=4732 TargetUserName="Administrators"
| rename MemberName AS TargetUserName
]
| table _time, SubjectUserName, TargetUserName, ComputerName
| eval alert = "New account created and added to Administrators group"
分配特殊权限（EventCode 4672）：
index=wineventlog sourcetype="WinEventLog:Security" EventCode=4672
SubjectUserName!="SYSTEM" SubjectUserName!="LOCAL SERVICE" SubjectUserName!="NETWORK SERVICE"
| stats count, values(PrivilegeList) AS privileges by SubjectUserName, ComputerName
| where count > 0
| search privileges IN ("SeDebugPrivilege", "SeTcbPrivilege", "SeBackupPrivilege",
"SeRestorePrivilege", "SeAssignPrimaryTokenPrivilege")
令牌操纵（Token Manipulation）检测（T1134）：
index=sysmon EventCode=10 TargetImage="*\\lsass.exe"
GrantedAccess IN ("0x1010", "0x1038", "0x1fffff", "0x40")
| stats count by SourceImage, SourceUser, Computer, GrantedAccess
| where NOT match(SourceImage, "(svchost|csrss|wininit|MsMpEng|CrowdStrike)")
| sort - count
计划任务创建（T1053.005）：
index=wineventlog (sourcetype="WinEventLog:Security" EventCode=4698)
OR (sourcetype="XmlWinEventLog:Microsoft-Windows-Sysmon/Operational" EventCode=1
Image="*\\schtasks.exe")
| eval task_info = coalesce(TaskContent, CommandLine)
| search task_info="*powershell*" OR task_info="*cmd*" OR task_info="*http*" OR task_info="*\\Temp\\*"
| table _time, Computer, SubjectUserName, TaskName, task_info
注册表 Run 键修改（T1547.001）：
index=sysmon EventCode=13
TargetObject IN (
"*\\CurrentVersion\\Run\\*",
"*\\CurrentVersion\\RunOnce\\*",
"*\\CurrentVersion\\RunServices\\*",
"*\\Explorer\\Shell Folders\\*"
)
| stats count by Computer, Image, TargetObject, Details
| where NOT match(Image, "(explorer\.exe|msiexec\.exe|setup\.exe)")
| sort - count
WMI 事件订阅（T1546.003）：
index=sysmon EventCode=20 OR EventCode=21
| stats count by Computer, Operation, Consumer, EventNamespace
| where count > 0
远程服务利用（T1021.002 — SMB/Windows 管理共享）：
index=wineventlog sourcetype="WinEventLog:Security" EventCode=4624 Logon_Type=3
| stats dc(ComputerName) AS unique_destinations, values(ComputerName) AS targets
by src_ip, TargetUserName
| where unique_destinations > 3
| sort - unique_destinations
| table src_ip, TargetUserName, unique_destinations, targets
PsExec 检测（T1021.002）：
index=sysmon EventCode=1
(Image="*\\psexec.exe" OR Image="*\\psexesvc.exe"
OR ParentImage="*\\psexesvc.exe"
OR OriginalFileName="psexec.c")
| table _time, Computer, User, ParentImage, Image, CommandLine
RDP 横向移动（T1021.001）：
index=wineventlog sourcetype="WinEventLog:Security" EventCode=4624 Logon_Type=10
| stats count, dc(ComputerName) AS rdp_targets, values(ComputerName) AS destinations
by src_ip, TargetUserName
| where rdp_targets > 2
| sort - rdp_targets
为被入侵主机创建全面时间线：
(index=wineventlog OR index=sysmon) Computer="WORKSTATION-042"
earliest="2024-03-14T00:00:00" latest="2024-03-16T00:00:00"
| eval event_description = case(
EventCode=4624, "Logon: ".TargetUserName." (Type ".Logon_Type.")",
EventCode=4625, "Failed Logon: ".TargetUserName,
EventCode=4688 OR (sourcetype="XmlWinEventLog:*Sysmon*" AND EventCode=1),
"Process: ".Image." CMD: ".CommandLine,
EventCode=4698, "Scheduled Task: ".TaskName,
EventCode=3, "Network: ".DestinationIp.":".DestinationPort,
EventCode=11, "File Created: ".TargetFilename,
EventCode=13, "Registry: ".TargetObject,
1=1, "Event ".EventCode
)
| sort _time
| table _time, EventCode, event_description, User, src_ip
构建 Windows Event ID 上下文参考查找表：
| inputlookup windows_eventcode_lookup.csv
| table EventCode, Description, ATT_CK_Technique, Severity
如果查找表不存在，创建它：
EventCode,Description,ATT_CK_Technique,Severity
4624,Successful Logon,T1078,Informational
4625,Failed Logon,T1110,Low
4648,Explicit Credential Logon,T1078,Medium
4672,Special Privileges Assigned,T1134,Medium
4688,New Process Created,T1059,Informational
4698,Scheduled Task Created,T1053.005,Medium
4720,User Account Created,T1136.001,High
4732,Member Added to Security Group,T1098,High
4768,Kerberos TGT Requested,T1558,Informational
4769,Kerberos Service Ticket,T1558.003,Low
4771,Kerberos Pre-Auth Failed,T1110,Low
| 术语 | 定义 |
|---|---|
| EventCode 4624 | 登录成功事件 — Logon_Type 2（交互式）、3（网络）、10（RDP）、7（解锁） |
| EventCode 4625 | 登录失败事件 — Status 代码指示失败原因（密码错误、账户锁定、账户禁用） |
| Sysmon EventCode 1 | 进程创建，包含完整命令行、父进程及哈希信息 |
| Sysmon EventCode 3 | 进程发起的网络连接 — 源/目的 IP、端口及进程上下文 |
| Logon Type 3 | 网络登录（SMB、WMI、PowerShell Remoting）— 横向移动的关键指标 |
| Logon Type 10 | 通过 RDP/Terminal Services 的远程交互式登录 |
WINDOWS EVENT LOG ANALYSIS — HOST: WORKSTATION-042
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Period: 2024-03-14 to 2024-03-15
Events: 12,847 total (Security: 9,231 | Sysmon: 3,616)
Authentication Summary:
Successful Logons (4624): 487 (Type 3: 312, Type 10: 45, Type 2: 130)
Failed Logons (4625): 847 (from 192.168.1.105 — BRUTE FORCE)
Explicit Creds (4648): 12
Suspicious Findings:
[HIGH] 847 failed logons followed by success at 14:35 from 192.168.1.105
[HIGH] New user "backdoor_admin" created (4720) at 14:38
[HIGH] User added to Administrators group (4732) at 14:38
[MEDIUM] schtasks.exe creating persistence task at 14:42
[MEDIUM] PowerShell encoded command execution at 14:45
ATT&CK Mapping:
T1110.001 — Password Guessing (847 failed logons)
T1136.001 — Local Account Creation (backdoor_admin)
T1053.005 — Scheduled Task (persistence)
T1059.001 — PowerShell (encoded execution)
npx claudepluginhub killvxk/cybersecurity-skills-zhAnalyzes Windows Security, System, and Sysmon event logs in Splunk to detect authentication attacks, privilege escalation, and lateral movement using SPL queries mapped to MITRE ATT&CK.
Analyzes Windows Security, System, and Sysmon event logs in Splunk to detect authentication attacks, privilege escalation, persistence, and lateral movement using SPL queries mapped to MITRE ATT&CK. For SOC analysts investigating threats or building detections.
Analyzes Windows Security, System, and Sysmon event logs in Splunk to detect authentication attacks, privilege escalation, persistence, and lateral movement using SPL queries mapped to MITRE ATT&CK.