60 lines
2.5 KiB
Text
60 lines
2.5 KiB
Text
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/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2016-05-21
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Identifier: Kerberoast
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*/
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rule GetUserSPNs_VBS {
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meta:
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description = "Auto-generated rule - file GetUserSPNs.vbs"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://github.com/skelsec/PyKerberoast"
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date = "2016-05-21"
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hash1 = "8dcb568d475fd8a0557e70ca88a262b7c06d0f42835c855b52e059c0f5ce9237"
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id = "5576c1b9-4670-52c5-b23c-64adcc8709de"
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strings:
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$s1 = "Wscript.Echo \"User Logon: \" & oRecordset.Fields(\"samAccountName\")" fullword ascii
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$s2 = "Wscript.Echo \" USAGE: \" & WScript.ScriptName & \" SpnToFind [GC Servername or Forestname]\"" fullword ascii
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$s3 = "strADOQuery = \"<\" + strGCPath + \">;(&(!objectClass=computer)(servicePrincipalName=*));\" & _" fullword ascii
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condition:
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2 of them
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}
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rule GetUserSPNs_PS1 {
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meta:
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description = "Auto-generated rule - file GetUserSPNs.ps1"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://github.com/skelsec/PyKerberoast"
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date = "2016-05-21"
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hash1 = "1b69206b8d93ac86fe364178011723f4b1544fff7eb1ea544ab8912c436ddc04"
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id = "a2fba75c-264f-5e89-afaf-9d19a4a90784"
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strings:
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$s1 = "$ForestInfo = [System.DirectoryServices.ActiveDirectory.Forest]::GetCurrentForest()" fullword ascii
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$s2 = "@{Name=\"PasswordLastSet\"; Expression={[datetime]::fromFileTime($result.Properties[\"pwdlastset\"][0])} } #, `" fullword ascii
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$s3 = "Write-Host \"No Global Catalogs Found!\"" fullword ascii
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$s4 = "$searcher.PropertiesToLoad.Add(\"pwdlastset\") | Out-Null" fullword ascii
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condition:
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2 of them
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}
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rule kerberoast_PY {
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meta:
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description = "Auto-generated rule - file kerberoast.py"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://github.com/skelsec/PyKerberoast"
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date = "2016-05-21"
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hash1 = "73155949b4344db2ae511ec8cab85da1ccbf2dfec3607fb9acdc281357cdf380"
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id = "cea6cdb2-cd1a-5701-a9d1-27c788a962a7"
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strings:
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$s1 = "newencserverticket = kerberos.encrypt(key, 2, encoder.encode(decserverticket), nonce)" fullword ascii
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$s2 = "key = kerberos.ntlmhash(args.password)" fullword ascii
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$s3 = "help='the password used to decrypt/encrypt the ticket')" fullword ascii
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$s4 = "newencserverticket = kerberos.encrypt(key, 2, e, nonce)" fullword ascii
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condition:
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2 of them
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}
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