alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"WebForm"; http_user_agent; depth:7; threshold:type limit,count 2,track by_src,seconds 300; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:9; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, former_category HUNTING, signature_severity Major, tag User_Agent, updated_at 2020_10_16;)
Added 2020-10-16 18:22:56 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"WebForm"; http_user_agent; depth:7; threshold:type limit,count 2,track by_src,seconds 300; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:9; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, former_category HUNTING, signature_severity Major, tag User_Agent, updated_at 2019_10_11;)
Added 2020-08-05 19:05:19 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"WebForm"; http_user_agent; depth:7; threshold:type limit,count 2,track by_src,seconds 300; metadata: former_category HUNTING; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:9; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2019_10_11;)
Added 2019-10-11 19:56:26 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; threshold:type limit,count 2,track by_src,seconds 300; metadata: former_category HUNTING; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:8; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2017_10_30;)
Added 2019-10-09 19:08:41 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; threshold:type limit,count 2,track by_src,seconds 300; metadata: former_category TROJAN; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:8; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2017_10_30;)
Added 2017-10-30 18:17:32 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; threshold:type limit,count 2,track by_src,seconds 300; metadata: former_category TROJAN; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:8; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2017_10_30;)
Added 2017-10-30 16:39:40 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; threshold:type limit,count 2,track by_src,seconds 300; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:7; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2016_07_01;)
Added 2017-08-07 21:01:26 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; threshold:type limit,count 2,track by_src,seconds 300; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; classtype:trojan-activity; sid:2008262; rev:7;)
Added 2011-10-12 19:24:46 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; threshold:type limit,count 2,track by_src,seconds 300; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; sid:2008262; rev:7;)
Added 2011-09-14 22:38:14 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"User-Agent|3a|
WebForm?"; http_header; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2008262; rev:6;)
Added 2011-02-04 17:27:22 UTC
User-Agent known to be used by a variety of branded crapware/spyware/adware and toolbars. Most common and recent examples communicate with
www.app-zilla.com. See for reference the following:
Numerous and varied AV detection names, including Trojan/Agent.cwwu, Win32/Agent.FM, Trojan.Win32.Downloader.65536.JE.
Associated "branding" includes garbage such as registry cleaner utilities, iTunes export apps, data mirror software, image convert utilities, etc. Common URI path giveaways include
/register_datamirror_z.php
and
register_datamirror_yz.php
(with
datamirror substituted with the respective branding). Associated software also described as resisting uninstall and likely monetizing via PPI schemes and/or trojan drops.
We've got additional hits on this also used by eType (etype.com, epyte.com):
GET /CheckBadUpdater.aspx?Test=False&version=1.0.1.387 HTTP/1.1
User-Agent: WebForm 1
Host: newversion.epyte.com
Cache-Control: no-cache
GET /ClientSettings/GetClientSettings.aspx HTTP/1.1
User-Agent: WebForm 1
Host: backofficesite.epyte.com
Cache-Control: no-cache
GET /GetScoreboardData2.aspx?computername=10657542-77e4-6142-a1e5-6adbd3c636a2
HTTP/1.1
User-Agent: WebForm 1
Host: www.epyte.com
Cache-Control: no-cache
--
DarrenSpruell - 16 Aug 2011
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"|0d 0a|User-Agent\:
WebForm?"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2008262; rev:4;)
Added 2009-10-19 09:15:44 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"|0d 0a|User-Agent\:
WebForm?"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2008262; rev:4;)
Added 2009-10-19 09:15:44 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"|0d 0a|User-Agent\:
WebForm?"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2008262; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2008262; rev:2;)
Added 2009-02-09 22:22:08 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (
WebForm? 1)"; flow:to_server,established; content:"|0d 0a|User-Agent\:
WebForm?"; classtype:trojan-activity; sid:2008262; rev:1;)
Added 2008-05-24 14:38:23 UTC