From 8eb7421978da9a28ae520f1d358ff36af0a34065 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" <41898282+github-actions[bot]@users.noreply.github.com> Date: Mon, 26 Jan 2026 20:19:43 +0000 Subject: [PATCH] Sigma Rule Update (2026-01-26 20:19:36) (#233) Co-authored-by: YamatoSecurity --- config/security_rules.json | 294 ++++++++++++++++++++----------------- 1 file changed, 158 insertions(+), 136 deletions(-) diff --git a/config/security_rules.json b/config/security_rules.json index 4a9cd169..b8347317 100644 --- a/config/security_rules.json +++ b/config/security_rules.json @@ -344,8 +344,8 @@ "T1059.001", "TA0008", "T1021.003", - "T1021", - "T1059" + "T1059", + "T1021" ], "title": "Suspicious Non PowerShell WSMAN COM Provider" }, @@ -424,8 +424,8 @@ "T1059.001", "TA0008", "T1021.006", - "T1059", - "T1021" + "T1021", + "T1059" ], "title": "Remote PowerShell Session (PS Classic)" }, @@ -1173,8 +1173,8 @@ "T1529", "attack.g0091", "attack.s0363", - "T1059", - "T1071" + "T1071", + "T1059" ], "title": "Silence.EDA Detection" }, @@ -1503,8 +1503,8 @@ "T1552.001", "T1555", "T1555.003", - "T1552", - "T1548" + "T1548", + "T1552" ], "title": "HackTool - WinPwn Execution - ScriptBlock" }, @@ -4374,8 +4374,8 @@ "T1059.001", "TA0008", "T1021.006", - "T1059", - "T1021" + "T1021", + "T1059" ], "title": "Remote PowerShell Session (PS Module)" }, @@ -4862,8 +4862,8 @@ "T1059.005", "T1059.006", "T1059.007", - "T1059", - "T1204" + "T1204", + "T1059" ], "title": "AppLocker Prevented Application or Script from Running" }, @@ -5535,8 +5535,8 @@ "TA0002", "T1059.001", "T1218", - "T1027", - "T1059" + "T1059", + "T1027" ], "title": "Obfuscated PowerShell MSI Install via WindowsInstaller COM" }, @@ -5961,8 +5961,8 @@ "TA0004", "T1543.003", "T1562.001", - "T1543", - "T1562" + "T1562", + "T1543" ], "title": "Devcon Execution Disabling VMware VMCI Device" }, @@ -6231,8 +6231,8 @@ "TA0002", "T1059.007", "cve.2020-1599", - "T1059", - "T1218" + "T1218", + "T1059" ], "title": "MSHTA Execution with Suspicious File Extensions" }, @@ -7372,8 +7372,8 @@ "T1482", "T1069.002", "stp.1u", - "T1069", - "T1087" + "T1087", + "T1069" ], "title": "PUA - AdFind Suspicious Execution" }, @@ -7906,8 +7906,8 @@ "TA0005", "T1036.004", "T1036.005", - "T1053", - "T1036" + "T1036", + "T1053" ], "title": "Scheduled Task Creation Masquerading as System Processes" }, @@ -8110,8 +8110,8 @@ "T1548.002", "T1546.001", "T1112", - "T1546", - "T1548" + "T1548", + "T1546" ], "title": "Registry Modification of MS-settings Protocol Handler" }, @@ -8635,8 +8635,8 @@ "TA0003", "T1053.005", "T1059.001", - "T1059", - "T1053" + "T1053", + "T1059" ], "title": "Suspicious Schtasks Execution AppData Folder" }, @@ -11129,8 +11129,8 @@ "T1218.010", "TA0002", "TA0005", - "T1204", - "T1218" + "T1218", + "T1204" ], "title": "Suspicious WMIC Execution Via Office Process" }, @@ -11323,8 +11323,8 @@ "T1071.004", "T1132.001", "T1048", - "T1071", - "T1132" + "T1132", + "T1071" ], "title": "DNS Exfiltration and Tunneling Tools Execution" }, @@ -11870,8 +11870,8 @@ "T1047", "T1204.002", "T1218.010", - "T1218", - "T1204" + "T1204", + "T1218" ], "title": "Suspicious WmiPrvSE Child Process" }, @@ -13473,8 +13473,8 @@ "T1087.002", "T1482", "T1069.002", - "T1069", - "T1087" + "T1087", + "T1069" ], "title": "Renamed AdFind Execution" }, @@ -13816,8 +13816,8 @@ "T1587.001", "TA0002", "T1569.002", - "T1587", - "T1569" + "T1569", + "T1587" ], "title": "PUA - CsExec Execution" }, @@ -15968,8 +15968,8 @@ "T1203", "T1059.003", "attack.g0032", - "T1566", - "T1059" + "T1059", + "T1566" ], "title": "Suspicious HWP Sub Processes" }, @@ -16369,6 +16369,28 @@ ], "title": "Execute Code with Pester.bat as Parent" }, + { + "category": "process_creation", + "channel": [ + "sec" + ], + "description": "Detects cmd.exe executing commands with the \"start\" utility using \"/b\" (no window) or \"/min\" (minimized) flags.\nTo reduce false positives from standard background tasks, detection is restricted to scenarios where the target is a known script extension or located in suspicious temporary/public directories.\nThis technique was observed in Chaos, DarkSide, and Emotet malware campaigns.\n", + "event_ids": [ + "4688" + ], + "id": "568b2ac8-83d2-2e23-94e9-f2a5dcdb457f", + "level": "medium", + "service": "", + "subcategory_guids": [ + "0CCE922B-69AE-11D9-BED3-505054503030" + ], + "tags": [ + "TA0005", + "T1564.003", + "T1564" + ], + "title": "Cmd Launched with Hidden Start Flags to Suspicious Targets" + }, { "category": "process_creation", "channel": [ @@ -18281,8 +18303,8 @@ "T1218.011", "TA0006", "T1003.001", - "T1218", - "T1003" + "T1003", + "T1218" ], "title": "Process Access via TrolleyExpress Exclusion" }, @@ -21113,9 +21135,9 @@ "TA0005", "T1218.014", "T1036.002", - "T1204", "T1036", - "T1218" + "T1218", + "T1204" ], "title": "MMC Executing Files with Reversed Extensions Using RTLO Abuse" }, @@ -21587,8 +21609,8 @@ "T1047", "T1204.002", "T1218.010", - "T1218", - "T1204" + "T1204", + "T1218" ], "title": "Suspicious Microsoft Office Child Process" }, @@ -21671,11 +21693,11 @@ "T1557", "T1082", "T1556", - "T1505", - "T1574", - "T1546", + "T1547", "T1564", - "T1547" + "T1505", + "T1546", + "T1574" ], "title": "Potential Suspicious Activity Using SeCEdit" }, @@ -23163,8 +23185,8 @@ "T1059.003", "TA0005", "T1027.010", - "T1059", - "T1027" + "T1027", + "T1059" ], "title": "Suspicious Usage of For Loop with Recursive Directory Search in CMD" }, @@ -23973,8 +23995,8 @@ "T1204.004", "TA0005", "T1027.010", - "T1027", - "T1204" + "T1204", + "T1027" ], "title": "Suspicious Explorer Process with Whitespace Padding - ClickFix/FileFix" }, @@ -24469,8 +24491,8 @@ "TA0003", "T1053.005", "T1059.001", - "T1059", - "T1053" + "T1053", + "T1059" ], "title": "Scheduled Task Executing Payload from Registry" }, @@ -24849,8 +24871,8 @@ "T1133", "T1136.001", "T1021.001", - "T1136", - "T1021" + "T1021", + "T1136" ], "title": "User Added to Remote Desktop Users Group" }, @@ -25485,8 +25507,8 @@ "T1564.004", "T1552.001", "T1105", - "T1552", - "T1564" + "T1564", + "T1552" ], "title": "Insensitive Subfolder Search Via Findstr.EXE" }, @@ -26480,8 +26502,8 @@ "T1069.002", "TA0002", "T1059.001", - "T1059", "T1087", + "T1059", "T1069" ], "title": "HackTool - Bloodhound/Sharphound Execution" @@ -27410,8 +27432,8 @@ "T1070.001", "T1562.002", "car.2016-04-002", - "T1562", - "T1070" + "T1070", + "T1562" ], "title": "Suspicious Eventlog Clearing or Configuration Change Activity" }, @@ -27569,8 +27591,8 @@ "T1106", "T1059.003", "T1218.011", - "T1218", - "T1059" + "T1059", + "T1218" ], "title": "HackTool - RedMimicry Winnti Playbook Execution" }, @@ -27961,8 +27983,8 @@ "T1558.003", "TA0008", "T1550.003", - "T1558", - "T1550" + "T1550", + "T1558" ], "title": "HackTool - Rubeus Execution" }, @@ -28424,8 +28446,8 @@ "TA0003", "T1036.005", "T1053.005", - "T1053", - "T1036" + "T1036", + "T1053" ], "title": "Suspicious Scheduled Task Creation via Masqueraded XML File" }, @@ -30517,8 +30539,8 @@ "T1559.001", "TA0005", "T1218.010", - "T1559", - "T1218" + "T1218", + "T1559" ], "title": "Network Connection Initiated By Regsvr32.EXE" }, @@ -30653,8 +30675,8 @@ "T1071.004", "TA0002", "T1059.003", - "T1071", - "T1059" + "T1059", + "T1071" ], "title": "Network Connection Initiated via Finger.EXE" }, @@ -31366,8 +31388,8 @@ "T1059.001", "T1027.010", "detection.threat-hunting", - "T1027", - "T1059" + "T1059", + "T1027" ], "title": "Invocation Of Crypto-Classes From The \"Cryptography\" PowerShell Namespace" }, @@ -31890,8 +31912,8 @@ "TA0001", "TA0043", "detection.threat-hunting", - "T1598", - "T1566" + "T1566", + "T1598" ], "title": "HTML File Opened From Download Folder" }, @@ -32708,8 +32730,8 @@ "T1547.001", "detection.threat-hunting", "T1027", - "T1547", - "T1059" + "T1059", + "T1547" ], "title": "Registry Set With Crypto-Classes From The \"Cryptography\" PowerShell Namespace" }, @@ -33235,8 +33257,8 @@ "TA0004", "T1548.002", "T1546.001", - "T1548", - "T1546" + "T1546", + "T1548" ], "title": "Shell Open Registry Keys Manipulation" }, @@ -34261,8 +34283,8 @@ "T1204.004", "TA0005", "T1027.010", - "T1027", - "T1204" + "T1204", + "T1027" ], "title": "Suspicious Space Characters in RunMRU Registry Path - ClickFix" }, @@ -37250,9 +37272,9 @@ "T1021.002", "T1543.003", "T1569.002", - "T1021", + "T1543", "T1569", - "T1543" + "T1021" ], "title": "Potential CobaltStrike Service Installations - Registry" }, @@ -37873,8 +37895,8 @@ "TA0003", "T1547.001", "T1546.009", - "T1546", - "T1547" + "T1547", + "T1546" ], "title": "Session Manager Autorun Keys Modification" }, @@ -38674,8 +38696,8 @@ "T1566.001", "cve.2017-0261", "detection.emerging-threats", - "T1204", - "T1566" + "T1566", + "T1204" ], "title": "Exploit for CVE-2017-0261" }, @@ -38733,8 +38755,8 @@ "car.2016-04-002", "detection.emerging-threats", "T1218", - "T1003", - "T1070" + "T1070", + "T1003" ], "title": "NotPetya Ransomware Activity" }, @@ -38760,8 +38782,8 @@ "T1543.003", "T1569.002", "detection.emerging-threats", - "T1543", - "T1569" + "T1569", + "T1543" ], "title": "CosmicDuke Service Installation" }, @@ -39057,8 +39079,8 @@ "TA0011", "T1071.004", "detection.emerging-threats", - "T1053", "T1071", + "T1053", "T1543" ], "title": "OilRig APT Schedule Task Persistence - Security" @@ -39091,8 +39113,8 @@ "TA0011", "T1071.004", "detection.emerging-threats", - "T1543", "T1053", + "T1543", "T1071" ], "title": "OilRig APT Registry Persistence" @@ -39125,8 +39147,8 @@ "TA0011", "T1071.004", "detection.emerging-threats", - "T1543", "T1053", + "T1543", "T1071" ], "title": "OilRig APT Activity" @@ -40199,8 +40221,8 @@ "T1053.005", "T1059.006", "detection.emerging-threats", - "T1059", - "T1053" + "T1053", + "T1059" ], "title": "Serpent Backdoor Payload Execution Via Scheduled Task" }, @@ -40346,8 +40368,8 @@ "T1053.005", "T1027", "detection.emerging-threats", - "T1053", - "T1059" + "T1059", + "T1053" ], "title": "Turla Group Commands May 2020" }, @@ -40403,8 +40425,8 @@ "attack.s0412", "attack.g0001", "detection.emerging-threats", - "T1059", - "T1218" + "T1218", + "T1059" ], "title": "ZxShell Malware" }, @@ -41417,8 +41439,8 @@ "T1059.001", "T1218.005", "detection.emerging-threats", - "T1059", - "T1218" + "T1218", + "T1059" ], "title": "Potential Baby Shark Malware Activity" }, @@ -41783,8 +41805,8 @@ "T1053.005", "T1059.001", "detection.emerging-threats", - "T1059", "T1036", + "T1059", "T1053" ], "title": "Operation Wocao Activity" @@ -41817,8 +41839,8 @@ "T1059.001", "detection.emerging-threats", "T1053", - "T1059", - "T1036" + "T1036", + "T1059" ], "title": "Operation Wocao Activity - Security" }, @@ -43891,8 +43913,8 @@ "TA0002", "T1204.002", "T1553.005", - "T1553", - "T1204" + "T1204", + "T1553" ], "title": "Windows AppX Deployment Full Trust Package Installation" }, @@ -43989,8 +44011,8 @@ "TA0002", "T1204.002", "T1553.005", - "T1204", - "T1553" + "T1553", + "T1204" ], "title": "Windows AppX Deployment Unsigned Package Installation" }, @@ -45335,8 +45357,8 @@ "TA0002", "T1543.003", "T1569.002", - "T1543", - "T1569" + "T1569", + "T1543" ], "title": "Remote Access Tool Services Have Been Installed - Security" }, @@ -46163,8 +46185,8 @@ "T1003.006", "T1569.002", "attack.s0005", - "T1003", - "T1569" + "T1569", + "T1003" ], "title": "Credential Dumping Tools Service Execution - Security" }, @@ -47189,9 +47211,9 @@ "T1485", "T1553.002", "attack.s0195", + "T1553", "T1070", - "T1027", - "T1553" + "T1027" ], "title": "Potential Secure Deletion with SDelete" }, @@ -47239,8 +47261,8 @@ "T1087.002", "T1069.002", "attack.s0039", - "T1087", - "T1069" + "T1069", + "T1087" ], "title": "Reconnaissance Activity" }, @@ -48169,8 +48191,8 @@ "T1218.010", "TA0002", "TA0005", - "T1204", - "T1218" + "T1218", + "T1204" ], "title": "Excel Proxy Executing Regsvr32 With Payload Alternate" }, @@ -48329,8 +48351,8 @@ "T1218.010", "TA0002", "TA0005", - "T1218", - "T1204" + "T1204", + "T1218" ], "title": "Office Applications Spawning Wmi Cli Alternate" }, @@ -48513,8 +48535,8 @@ "T1218.010", "TA0002", "TA0005", - "T1218", - "T1204" + "T1204", + "T1218" ], "title": "New Lolbin Process by Office Applications" }, @@ -50918,8 +50940,8 @@ "T1003.006", "T1569.002", "attack.s0005", - "T1003", - "T1569" + "T1569", + "T1003" ], "title": "Credential Dumping Tools Service Execution - System" }, @@ -50984,8 +51006,8 @@ "T1543.003", "T1569.002", "T1543", - "T1569", - "T1021" + "T1021", + "T1569" ], "title": "CobaltStrike Service Installations - System" }, @@ -51960,8 +51982,8 @@ "car.2013-09-005", "T1543.003", "T1569.002", - "T1569", - "T1543" + "T1543", + "T1569" ], "title": "Malicious Service Installations" }, @@ -52072,8 +52094,8 @@ "T1570", "TA0002", "T1569.002", - "T1569", - "T1021" + "T1021", + "T1569" ], "title": "Metasploit Or Impacket Service Installation Via SMB PsExec" }, @@ -52791,8 +52813,8 @@ "TA0008", "T1563.002", "T1021.001", - "T1021", - "T1563" + "T1563", + "T1021" ], "title": "Possible RDP Hijacking" }, @@ -54349,10 +54371,10 @@ "T1570", "T1021.002", "T1569.002", - "T1569", + "T1543", "T1021", - "T1136", - "T1543" + "T1569", + "T1136" ], "title": "PSExec Lateral Movement" },