""ET CURRENT_EVENTS [PTsecurity] Possible Malicious (HTA-VBS-PowerShell) obfuscated command""
SID: 2025558
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_05_03, deployment Perimeter, signature_severity Major, updated_at 2018_05_03, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
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Value: "200"
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Value: "<?xml" Depth: 5
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Value: "|22|JScript|22|><![CDATA[ eval("
Within: 500
PCRE: "/%comSpec%\s\/c\s(?:(?:\x50)|(?:\x70)|[Pp])\^?(?:(?:\x4f)|(?:\x5f)|[Oo])\^?(?:(?:\x57)|(?:\x77)|[Ww])\^?(?:(?:\x45)|(?:\x65)|[Ee])\^?(?:(?:\x52)|(?:\x72)|[Rr])\^?(?:(?:\x53)|(?:\x73)|[Ss])\^?(?:(?:\x48)|(?:\x68)|[Hh])\^?(?:(?:\x45)|(?:\x65)|[Ee])\^?(?:(?:\x4c)|(?:\x6c)|[Ll])\^?(?:(?:\x4c)|(?:\x6c)|[Ll])\^?(?:(?:\x2e)|.)\^?(?:(?:\x45)|(?:\x65)|[Ee])\^?(?:(?:\x58)|(?:\x78)|[Xx])\^?(?:(?:\x45)|(?:\x65)|[Ee])\^?\s/R"
Special Options:
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http_stat_code
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file_data
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fast_pattern