ET HUNTING EXE Using Suspicious IAT ZwUnmapViewOfSection Possible Malware Process Hollowing

Query · suricata

flow:established,to_client;
content:"MZ";
isdataat:76,relative;
content:"This program cannot be run in DOS mode."; distance:0;
content:"ZwUnmapViewOfSection"; fast_pattern; nocase; distance:0;
Raw source ET HUNTING EXE Using Suspicious IAT ZwUnmapViewOfSection Possible Malware Process Hollowing · Suricata
Esc
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 HUNTING EXE Using Suspicious IAT ZwUnmapViewOfSection Possible Malware Process Hollowing";
    flow:established,to_client;
    content:"MZ";
    isdataat:76,relative;
    content:"This program cannot be run in DOS mode."; distance:0;
    content:"ZwUnmapViewOfSection"; fast_pattern; nocase; distance:0;
    reference:url,blog.spiderlabs.com/2011/05/analyzing-malware-hollow-processes.html;
    reference:url,sans.org/reading_room/whitepapers/malicious/rss/_33649;
    classtype:bad-unknown;
    sid:2012816; rev:8;
    metadata:created_at 2011_05_18, confidence Medium, signature_severity Unknown, updated_at 2019_07_26;
)

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