ET RETIRED Win32/Wacatac.B!ml Data Exfiltration

Query · suricata

flow:established,to_server;
flowbits:isset,ET.Wacatac_B_Checkin;
content:"|23 23 23|";
content:"|23 23 23|"; distance:0;
content:"|23 23 23|"; distance:0;
content:"PK|03 04|"; distance:0;
byte_test:1,<=,20,0,relative;
content:"Google/Chrome/User|20|Data/"; fast_pattern;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET RETIRED Win32/Wacatac.B!ml Data Exfiltration · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Win32/Wacatac.B!ml Data Exfiltration";
    flow:established,to_server;
    flowbits:isset,ET.Wacatac_B_Checkin;
    content:"|23 23 23|";
    content:"|23 23 23|"; distance:0;
    content:"|23 23 23|"; distance:0;
    content:"PK|03 04|"; distance:0;
    byte_test:1,<=,20,0,relative;
    content:"Google/Chrome/User|20|Data/"; fast_pattern;
    reference:md5,082ba31c83e3fc1114b6444111e88019;
    classtype:trojan-activity;
    sid:2037236; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_06_30, deployment Perimeter, former_category MALWARE, malware_family Wacatac_B_ml, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30;
)

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