ET MALWARE Win32/Tofsee Covid19 Spam Template 1 Active - Outbound Email Spam

Query · suricata

flow:to_server,established;
content:"Subject|3a 20|";
pcre:"/^(?:The White House|And increasing numbers|Drivers for a parcel|The Italian region worst hit|Although Interpol issued|President Donald Trump|Restaurants are still allowed|A paper released on Friday)/R";
content:"receive|20|further|20|updates.Please"; distance:0; fast_pattern;
byte_test:1,!=,0x20,0,string,hex,relative;
Raw source ET MALWARE Win32/Tofsee Covid19 Spam Template 1 Active - Outbound Email Spam · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smtp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Tofsee Covid19 Spam Template 1 Active - Outbound Email Spam";
    flow:to_server,established;
    content:"Subject|3a 20|";
    pcre:"/^(?:The White House|And increasing numbers|Drivers for a parcel|The Italian region worst hit|Although Interpol issued|President Donald Trump|Restaurants are still allowed|A paper released on Friday)/R";
    content:"receive|20|further|20|updates.Please"; distance:0; fast_pattern;
    byte_test:1,!=,0x20,0,string,hex,relative;
    classtype:command-and-control;
    sid:2029773; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2020_03_31, malware_family Tofsee, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_03_31;
)

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