Win.Trojan.Qarallax (QRAT)

[Y M via Snort-sigs <snort-sigs () lists snort org>]

Hi,

Pcaps are available for this one.

# Date: 2018-05-01
# Title: Qarallax (QRAT)
# Tests: pcap
# Reference: https://twitter.com/James_inthe_box/status/951153660133699584, 
https://www.virustotal.com/#/file/658f67dbf509fc017ace6db7ed38b3591fe72b9ba950a59054869cd718b4da2b/detection

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"MALWARE-CNC Win.Trojan.Qarallax (QRAT) inbound connection"; 
flow:to_client,established; content:"|7B 22|masmag|22|:"; fast_pattern:only; content:"|22|masver|22|:"; 
metadata:ruleset community; 
reference:url,www.virustotal.com/#/file/658f67dbf509fc017ace6db7ed38b3591fe72b9ba950a59054869cd718b4da2b/detection; 
reference:url,twitter.com/James_inthe_box/status/951153660133699584; classtype:trojan-activity; sid:8000030; rev:1;)
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"MALWARE-CNC Win.Trojan.Qarallax (QRAT) outbound connection"; 
flow:to_server,established; content:"|7B 22|magic|22|:"; fast_pattern:only; content:"|22|index|22|:"; metadata:ruleset 
community; 
reference:url,www.virustotal.com/#/file/658f67dbf509fc017ace6db7ed38b3591fe72b9ba950a59054869cd718b4da2b/detection; 
reference:url,twitter.com/James_inthe_box/status/951153660133699584; classtype:trojan-activity; sid:8000031; rev:1;)
alert tcp any any -> any any (msg:"MALWARE-CNC Win.Trojan.Qarallax (QRAT) keep-alive connection"; flow:established; 
dsize:19; content:"|7B 22|state|22|:|22|alive|22 7D|"; fast_pattern:only; metadata:ruleset community; 
reference:url,www.virustotal.com/#/file/658f67dbf509fc017ace6db7ed38b3591fe72b9ba950a59054869cd718b4da2b/detection; 
reference:url,twitter.com/James_inthe_box/status/951153660133699584; classtype:trojan-activity; sid:8000032; rev:1;)

Thanks.
YM

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