""ET TROJAN Win32/Colibri Loader Activity M3""
SID: 2035108
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_05, deployment Perimeter, malware_family Colibri, signature_severity Major, updated_at 2022_02_05
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "POST"
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Value: ".php?type=update&uid="
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Value: !"Mozilla"
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Value: !"Opera"
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Value: !"Safari"
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Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"
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Value: !"Referer|3a 20|"
Within:
PCRE: "/^Content-Type\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\n/Hm"
Special Options:
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http_method
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http_uri
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fast_pattern
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http_header
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http_header
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http_header
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http_header
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http_header