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CISA - AA24-131A #StopRansomware: Black Basta

Low
Published: Fri May 10 2024 (05/10/2024, 00:00:00 UTC)
Source: CIRCL OSINT Feed
Vendor/Project: tlp
Product: white

Description

CISA - AA24-131A #StopRansomware: Black Basta

AI-Powered Analysis

AILast updated: 06/27/2025, 11:36:19 UTC

Technical Analysis

The Black Basta ransomware is a malware threat characterized by its use of multiple attack techniques to gain initial access, evade defenses, and cause significant impact through data encryption and system recovery inhibition. Initial access methods include phishing campaigns (T1566) and the use of valid accounts (T1078), which allow attackers to infiltrate networks by tricking users or leveraging compromised credentials. Once inside, the malware employs defense evasion tactics such as disabling or modifying security tools (T1562.001) to avoid detection and prolong its presence. The ransomware then encrypts data to disrupt business operations (T1486) and inhibits system recovery mechanisms (T1490), preventing victims from restoring their systems without paying a ransom. Although no specific affected software versions or patches are noted, the threat is persistent and ongoing, as indicated by its perpetual lifetime tag. The severity is currently rated as low by the source, but the combination of attack patterns suggests a potentially impactful ransomware campaign. No known exploits in the wild or CVSS score are provided, but the tactics align with sophisticated ransomware operations that can cause substantial operational and financial damage.

Potential Impact

For European organizations, Black Basta ransomware poses a significant risk to operational continuity, data confidentiality, and integrity. The use of phishing and valid credentials as entry points means that organizations with large user bases or insufficient credential hygiene are particularly vulnerable. Once inside, the disabling of defense tools can lead to prolonged undetected presence, increasing the potential damage. The encryption of critical data and inhibition of recovery processes can halt business operations, leading to financial losses, reputational damage, and regulatory consequences, especially under GDPR requirements for data protection and breach notification. Sectors such as healthcare, finance, manufacturing, and critical infrastructure in Europe could face severe disruptions. The low severity rating may reflect current observed activity levels or limited scope, but the potential for escalation remains, especially if attackers refine their techniques or target high-value entities.

Mitigation Recommendations

European organizations should implement targeted measures beyond generic advice: 1) Enhance phishing resilience through continuous, context-specific user training and simulated phishing exercises tailored to local languages and cultural contexts. 2) Enforce strict credential management policies, including multi-factor authentication (MFA) on all remote and privileged accounts to mitigate risks from valid account misuse. 3) Deploy advanced endpoint detection and response (EDR) solutions capable of detecting defense evasion behaviors such as tool tampering. 4) Regularly audit and harden security tools to prevent unauthorized modifications, including restricting administrative privileges and employing application whitelisting. 5) Maintain immutable, offline backups with tested recovery procedures to counteract data encryption and recovery inhibition tactics. 6) Implement network segmentation to limit lateral movement if initial access is gained. 7) Monitor for indicators of compromise related to Black Basta TTPs, even though none are currently listed, by leveraging threat intelligence sharing platforms. 8) Establish incident response plans that specifically address ransomware scenarios, including communication strategies compliant with European data protection laws.

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Technical Details

Uuid
a9f67dbb-ba26-4635-be1d-0780bc140897
Original Timestamp
1721396492

Indicators of Compromise

Comment

ValueDescriptionCopy
commentThe Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), Department of Health and Human Services (HHS), and Multi-State Information Sharing and Analysis Center (MS-ISAC) (hereafter referred to as the authoring organizations) are releasing this joint CSA to provide information on Black Basta, a ransomware variant whose actors have encrypted and stolen data from 12 out of 16 critical infrastructure sectors, including the Healthcare and Public Health (HPH) Sector. This joint CSA provides TTPs and IOCs obtained from FBI investigations and third-party reporting. Black Basta is considered a ransomware-as-a-service (RaaS) variant and was first identified in April 2022. Some Black Basta affiliates have impacted a wide range of businesses and critical infrastructure in North America, Europe, and Australia. As of May 2024, Black Basta affiliates have impacted over 500 organizations globally.
Imported from STIX header description

Url

ValueDescriptionCopy
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urlnuher.3577125d2a75f6a277fc5714ff536c5c6af5283d928a66daad6825b9a.7aaf8bba88534e88ec89251c57b01b322c7f52c7f1a5338930ae2a50.cbb47411f60fe58f76cf79d300c03bdecfb9e83379f59d80b8494951.e10c20f77.7fcc0eb6.dns.blocktoday.net
urlfy9.39d9030e5d3a8e2352daae2f4cd3c417b36f64c6644a783b9629147a1.afd8b8a4615358e0313bad8c544a1af0d8efcec0e8056c2c8eee96c7.b06d1825c0247387e38851b06be0272b0bd619b7c9636bc17b09aa70.a46890f27.588027fa.dns.realbumblebee.net

Domain

ValueDescriptionCopy
domainliteroved.ru
domainwinklen.ch
domainxkpal.1a4a64b6.dns.blocktoday.net
domainnuher.1d67bbcf4.456d87aa6.2d84dfba.dns.specialdrills.com
domainblocktoday.net
domainxkpal.d6597fa.dns.blocktoday.net
domainmy.2a91c002002.588027fa.dns.realbumblebee.net
domaindns.artspathgroupe.net
domaindns.trailshop.net
domain0gpw.588027fa.dns.realbumblebee.net
domainartspathgroupe.net
domainthetrailbig.net
domainrasapool.net
domainspecialdrills.com
domainthesmartcloudusa.com
domaintomlawcenter.com
domainlimitedtoday.com
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domainkekeoamigo.com
domainrecentbee.net
domainmyfinancialexperts.com
domainchildrensdolls.com
domainbuyblocknow.com
domainartspathgroup.net
domaintrailshop.net
domainwebnubee.com
domaininvestrealtydom.net
domainmagentoengineers.com
domainnebraska-lawyers.com
domainadslsdfdsfmo.world
domainconsulheartinc.com
domainbusinessprofessionalllc.com
domainotxcosmeticscare.com
domainotxcarecosmetics.com
domainartstrailman.com
domainontexcare.com
domainsecurecloudmanage.com
domainstartupbuss.com
domainoneblackwood.com
domainrecentbeelive.com
domaintrailcosolutions.com
domainonedogsclub.com
domaintrailcocompany.com
domainartstrailreviews.com
domainwipresolutions.com
domaintrackgroup.net
domainmodernbeem.net
domaincurrentbee.net
domainbuygreenstudio.com
domaintopglobaltv.com
domainusaglobalnews.com
domainstartupmartec.net
domainstartupbusiness24.net
domainjenshol.com
domainsimorten.com
domaininvestmentgblog.net
domainprotectionek.com
domaintechnologgies.com
domainunougn.com
domaingetfnewsolutions.com
domainwithclier.com
domainbluenetworking.net
domainerihudeg.com
domainseohomee.com
domainallcompanycenter.com
domaintaskthebox.net
domaingetfnewssolutions.com
domainsoftradar.net
domainbusinesforhome.com
domaingartenlofti.com
domainkarmafisker.com
domaincloudworldst.net
domainmonitor-websystem.net
domainprettyanimals.net
domainstartuptechnologyw.net
domaintrailgroupl.net
domainmonitorsystem.net
domainionoslaba.com
domainstockinvestlab.net
domainairbusco.net
domainjessvisser.com
domainmaluisepaul.com
domainmytrailinvest.net
domaingarbagemoval.com
domainconstrtionfirst.com
domainwardeli.com
domaincaspercan.com
domainmasterunix.net
domainbrendonline.com
domainseptcntr.com
domainunitedfrom.com
domainkolinileas.com
domainanimalsfast.net
domainauuditoe.com
domaininvestmentrealtyhp.net
domainclearsystemwo.net
domainaudsystemecll.net
domainwelausystem.net
domaintreeauwin.net
domainreelsysmoona.net
domaininvestmendvisor.net
domainwellsystemte.net
domainsteamteamdev.net
domainstartupbizaud.net
domainxserver.jp

Hash

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Ip

ValueDescriptionCopy
ip83.243.40.10
ip88.198.198.90
ip183.181.86.147
ip80.239.207.200
ip155.138.246.122
ip46.8.10.134
ip188.130.137.181
ip188.130.218.39
ip5.183.130.92
ip107.189.30.69
ip185.7.214.79
ip46.8.16.77
ip5.78.115.67
ip185.219.221.136
ip95.181.173.227
ip64.176.219.106
ip116.203.186.178
ip46.161.27.151
ip185.220.101.149
ip185.220.100.240

Ssdeep

ValueDescriptionCopy
ssdeep196608:puRTOvaeQyt37NKNGZH5c4Eo8qqBNoNdRn+ILwIjKek529:p4TheZaGZZc4Eoko0IcIRkA9
ssdeep24576:1p2gwjk6ikYhJ9lvGnYZvy48/V33ck7LnBAyldFu8hod/Qodly:1AgxkmvGnYWccjBAwFadRd
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ssdeep12288:RcOlvT7Zom3rITxaVDrd5vUa69Ghj91nlQocyW7/P6E4kKjqnes9PBVW/g:RDJJDbcJ90jtH0bP6ELVne2
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ssdeep24576:zvA0H/qL9fu4c8JZHSE6biXLemW34Mi+4LKH:UHL9fu4hSLbiXLer4MD4WH
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ssdeep12288:trkm8R9qXgmj3d7khtgfpedbKbiTuDZWhswtik5j2w+f:2Ujt7+twpedbKb1dWhse9K
ssdeep6144:OUjqtclKpiqKLICZM5cUq29shXs6u7ulx97Z52Gd:fqt4KoVkCm9oV
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File

ValueDescriptionCopy
file723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224
fileminipath.exe
fileUpdateReminder.exe
file51eb749d6cbd08baf9d43c2f83abd9d4d86eb5206f62ba43b768251a98ce9d3e
file350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd
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file3f400f30415941348af21d515a2fc6a3; 5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa
file17205c43189c22dfcb278f5cc45c2562f622b0b6280dcd43cc1d3c274095eb90.bin
fileAA24-131A.stix_.xml

Size in-bytes

ValueDescriptionCopy
size-in-bytes1499648
size-in-bytes209170
size-in-bytes556576
size-in-bytes576512

Text

ValueDescriptionCopy
textSTIX 1.1

Threat ID: 68367c0a182aa0cae2311df0

Added to database: 5/28/2025, 2:59:22 AM

Last enriched: 6/27/2025, 11:36:19 AM

Last updated: 9/28/2025, 10:33:24 AM

Views: 19

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