""ET TROJAN Win32/Small.NMZ CnC Checkin""
SID: 2037879
Revision: 1
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_01, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_08_01, reviewed_at 2024_08_19
Reference:
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md5
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4a8af3635882ee62d67ec9dd47c87796
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "|3b 2b|SV1|3b|"
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Value: "GET|20|/O.htm|20|"
Within:
PCRE: "/^Cache-Control\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+\r\nPragma\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+[\r\n]+$/H"
Special Options:
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http_header
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fast_pattern