[Emerging-Sigs] Rule for ET TROJAN Win32/Backdoor.Small.ao

Arvind Kumar arvind.kumar12 at gmail.com
Sun Feb 18 21:11:18 HST 2018


Hi Team,

Please find the attached rule for ET TROJAN Win32/Backdoor.Small.ao


alert tcp $HOME_NET 1024: -> $EXTERNAL_NET $HTTP_PORTS (msg:" ET TROJAN
Win32/Backdoor.Small.ao CnC Checkin";  flow:established,to_server;
content:"POST";  http_method; content:"/waiting";  fast_pattern; http_uri;
content:"User-Agent: BC"; http_header; metadata: former_category TROJAN;
reference:md5,e8c9d8ffe8fae54b15262bf9aeb4172c;
classtype:trojan-activity;  sid:2xxxxxx;  rev:1;  metadata:affected_product
Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint,
deployment Perimeter, signature_severity Major, created_at 2018_02_19,
malware_family Agent, performance_impact Moderate, updated_at 2018_02_19; )



Malware pcap download link:  https://www.sendspace.com/file/z6i5cr
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alert tcp $HOME_NET 1024: -> $EXTERNAL_NET $HTTP_PORTS (msg:" ET TROJAN Win32/Backdoor.Small.ao CnC Checkin";  flow:established,to_server;  content:"POST";  http_method; content:"/waiting";  fast_pattern; http_uri; content:"User-Agent: BC"; http_header; metadata: former_category TROJAN; reference:md5,e8c9d8ffe8fae54b15262bf9aeb4172c;  classtype:trojan-activity;  sid:2xxxxxx;  rev:1;  metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2018_02_19, malware_family Agent, performance_impact Moderate, updated_at 2018_02_19; )


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