ET MALWARE Observed ClickFix Fake Update iframe Injection Attempt

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
file.data;
content:"Click the|20 22|Copy fix|22 20|button below.";
content:"copyButton.addEventListener"; distance:0;
content:"Invoke-Expression|20 28|Invoke-WebRequest|20 2d|Uri"; fast_pattern; distance:0;
Raw source ET MALWARE Observed ClickFix Fake Update iframe Injection Attempt · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Observed ClickFix Fake Update iframe Injection Attempt";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    file.data;
    content:"Click the|20 22|Copy fix|22 20|button below.";
    content:"copyButton.addEventListener"; distance:0;
    content:"Invoke-Expression|20 28|Invoke-WebRequest|20 2d|Uri"; fast_pattern; distance:0;
    reference:url,proofpoint.com/us/blog/threat-insight/clipboard-compromise-powershell-self-pwn;
    classtype:trojan-activity;
    sid:2052606; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_05_14, deployment Perimeter, deployment SSLDecrypt, malware_family ClickFix, performance_impact Low, confidence High, signature_severity Major, tag compromised_website, updated_at 2024_05_14;
)

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