""ET TROJAN Win32/Valak <v9 - Stage 2 - Request""
SID: 2029193
Revision: 3
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_10_22, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2019_12_23
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "GET"
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Value: "_aWQ9"
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Value: !"Referer|3a 20|"
Within:
PCRE: "/_aWQ9[a-zA-Z0-9\/]{43,46}(JmdpZD|Z2lkP|ZnaWQ9)[a-zA-Z0-9\/]+.html$/U"
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