Rule History

SID: 2038743 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Sep 6, 2022, 12:00 PM

Message:

ET MALWARE Suspected Win32/TinyNode Activity (Outbound)

Rule:

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected Win32/TinyNode Activity (Outbound)"; flow:established,to_server; content:"|7b 22|ok|22 3a|true,|22|result|22 3a|"; fast_pattern; startswith; content:"|7b 30 2e|"; pcre:"/^[0-9]{15,16}\x7d$/R"; content:!"User-Agent|3a 20|"; content:!"Host|3a 20|"; reference:md5,3e4ab86263e0ff5a35f2e3fb17d03727; reference:url,blog.group-ib.com/oldgremlin_comeback; classtype:trojan-activity; sid:2038743; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_09_06, deployment Perimeter, malware_family OldGremlin, malware_family TinyNode, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_21;)

Created:

Sep 6, 2022, 12:00 PM

Updated:

Nov 21, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 1, 2025, 8:35 PM

Filename:

rules/emerging-malware.rules