""ET TROJAN Backdoor.Elise Style IP Check""
SID: 2025289
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 2018_02_01, deployment Perimeter, malware_family elise, performance_impact Moderate, signature_severity Major, updated_at 2018_02_01
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: to_server,established
Contents:
-
Value: "/myip?format=txt"
-
Value: "Host|3a 20|api.ipaddress.com"
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Value: "Mozilla/4.0 (compatible|3b| MSIE 8.0|3b| Windows NT 6.1|3b| Trident/4.0|3b| SLCC2|3b| .NET CLR 2.0.50727|3b| .NET CLR 3.5.30729|3b| .NET CLR 3.0.30729|3b| Media Center PC 6.0|3b| .NET4.0C|3b| .NET4.0E)"
Within:
PCRE: "/^Connection\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+/H"
Special Options:
-
http_uri
-
fast_pattern
-
http_header
-
http_header