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Cybersecurity and Infrastructure Security Agency (CISA)

You are subscribed to Cybersecurity Advisories for Cybersecurity and Infras= tructure Security Agency. This information has recently been updated and is=
now available.

CISA Updates BRICKSTORM Backdoor Malware Analysis Report [ https://www.cisa= .gov/news-events/analysis-reports/ar25-338a?utm_source=3DBRICKSTORMMARUpdat= e&utm_medium=3DGovDelivery ]

The Cybersecurity and Infrastructure Security Agency (CISA) released an upd= ate to its BRICKSTORM Backdoor Malware Analysis Report (MAR) [ https://www.= cisa.gov/news-events/analysis-reports/ar25-338a?utm_source=3DBRICKSTORMMARU= pdate&utm_medium=3DGovDelivery ] developed with the National Security Agenc=
y and Canadian Centre for Cyber Security. The update includes analysis and = detection signatures for a new BRICKSTORM variant that uses .NET Native Ahe= ad-of-Time (AOT) compilation=E2=80=94making it more versatile and harder to=
detect.

Like previous BRICKSTORM samples, the variant has initiation and secure com= mand and control capabilities that use multiple layers of encryption to hid=
e its communications, but unlike other samples, it does not have built-in s= elf-monitoring capabilities to enable persistence.

This update delves into the variant=E2=80=99s functionality and offers new = YARA rules to support detection. CISA urges all organizations who use VMwar=
e vSphere, especially those in the Government Services and Facilities [ htt= ps://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/cr= itical-infrastructure-sectors/government-services-facilities-sector ] and I= nformation Technology [ https://www.cisa.gov/topics/critical-infrastructure= -security-and-resilience/critical-infrastructure-sectors/information-techno= logy-sector ] sectors, to review the updated MAR and implement mitigation m= easures.

Please share your thoughts with us through this this anonymous survey [ htt= ps://cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?Source=3DGov= DeliveryBRICKSTORMMARUpdate ]. We appreciate your feedback!

This product is provided subject to this=C2=A0Notification [ https://www.ci= sa.gov/notification ]=C2=A0and this=C2=A0Privacy & Use=C2=A0policy [ https:= //www.cisa.gov/privacy-policy ].

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You are subscribed to updates from the Cybersecurity and Infrastructure Sec= urity Agency [ https://www.cisa.gov ] (CISA)
Manage Subscriptions [ https://public.govdelivery.com/accounts/USDHSCISA/su= bscriber/edit?preferences=3Dtrue#tab1 ]=C2=A0=C2=A0|=C2=A0=C2=A0Privacy Pol= icy [ https://www.cisa.gov/privacy-policy ]=C2=A0=C2=A0|=C2=A0 Help [ https= ://subscriberhelp.granicus.com/s/article/Subscriber-Help-Center ] [ https:/= /insights.govdelivery.com/Communications/Subscriber_Help_Center ]

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<p><img src=3D"https://content.govdelivery.com/attachments/fancy_images/U= SDHSCISA/2020/06/3486054/05152023-gov-delivery-banner-copy_original.png" al= t=3D"Cybersecurity and Infrastructure Security Agency (CISA)" title=3D"" wi= dth=3D"600" height=3D"100"></p>
<p>You are subscribed to Cybersecurity Advisories for Cybersecurity and I= nfrastructure Security Agency. This information has recently been updated a=
nd is now available.</p>
<h2><a href=3D"https://www.cisa.gov/news-events/analysis-reports/ar25-338a?= utm_source=3DBRICKSTORMMARUpdate&utm_medium=3DGovDelivery" target=3D"_blank=
" title=3D"CISA Updates BRICKSTORM Backdoor Malware Analysis Report" rel=3D= "noopener">CISA Updates BRICKSTORM Backdoor Malware Analysis Report</a></h2=

<div class=3D"rss_item" style=3D"margin-bottom: 2em;">
<p>The Cybersecurity and Infrastructure Security Agency (CISA) released an = update to its <a href=3D"https://www.cisa.gov/news-events/analysis-reports/= ar25-338a?utm_source=3DBRICKSTORMMARUpdate&utm_medium=3DGovDelivery" target= =3D"_blank" title=3D"BRICKSTORM Backdoor Malware Analysis Report (MAR)" rel= =3D"noopener">BRICKSTORM Backdoor Malware Analysis Report (MAR)</a> develop=
ed with the National Security Agency and Canadian Centre for Cyber Security=
. The update includes analysis and detection signatures for a new BRICKSTOR=
M variant that uses .NET Native Ahead-of-Time (AOT) compilation=E2=80=94mak= ing it more versatile and harder to detect.</p>
<p>Like previous BRICKSTORM samples, the variant has initiation and secure = command and control capabilities that use multiple layers of encryption to = hide its communications, but unlike other samples, it does not have built-i=
n self-monitoring capabilities to enable persistence.</p>
<p>This update delves into the variant=E2=80=99s functionality and offers n=
ew YARA rules to support detection. CISA urges all organizations who use VM= ware vSphere, especially those in the <a href=3D"https://www.cisa.gov/topic= s/critical-infrastructure-security-and-resilience/critical-infrastructure-s= ectors/government-services-facilities-sector" target=3D"_blank" title=3D"Go= vernment Services and Facilities" rel=3D"noopener">Government Services and = Facilities</a> and <a href=3D"https://www.cisa.gov/topics/critical-infrastr= ucture-security-and-resilience/critical-infrastructure-sectors/information-= technology-sector" target=3D"_blank" title=3D"Information Technology" rel= =3D"noopener">Information Technology</a> sectors, to review the updated MAR=
and implement mitigation measures.</p>
<p>Please share your thoughts with us through this this <a href=3D"https://= cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?Source=3DGovDeliv= eryBRICKSTORMMARUpdate" target=3D"_blank" title=3D"product feedback survey"=
rel=3D"noopener">anonymous survey</a>. We appreciate your feedback!</p> <p>This product is provided subject to this=C2=A0<a href=3D"https://www.cis= a.gov/notification" target=3D"_blank" title=3D"Notification" rel=3D"noopene= r">Notification</a>=C2=A0and this=C2=A0<a href=3D"https://www.cisa.gov/priv= acy-policy" target=3D"_blank" title=3D"Privacy &amp; Use=C2=A0policy" rel= =3D"noopener">Privacy &amp; Use=C2=A0policy</a>.</p>
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