""ET TROJAN Powershell commands sent when remote host claims to send an image""
SID: 2025007
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 2017_11_16, deployment Perimeter, malware_family PowerShell_Downloader, performance_impact Low, signature_severity Major, updated_at 2017_11_16
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "Content-Type|3a| image/jpeg"
-
Value: "New-Object"
-
Value: "System.Net.WebClient"
-
Value: "Start-Process"
Within:
PCRE:
Special Options:
-
http_header
-
nocase
-
nocase