cbcvebase.
CVE-2024-43451
published 2024-11-12

CVE-2024-43451: NTLM Hash Disclosure Spoofing Vulnerability NTLM Hash Disclosure Spoofing Vulnerability

medium6.5CVSS 3.1
AVNACLPRNUIRSUCHINAN
KEVITWEXPLOITRansomware
CISA Known Exploited Vulnerabilitydue 2024-12-03
Exploited in the wild
EPSS
81.82%
99.6th percentile
NTLM Hash Disclosure Spoofing Vulnerability NTLM Hash Disclosure Spoofing Vulnerability

Affected

32 ranges· showing 25
VendorProductVersion rangeFixed in
microsoftwindows_10_version_1507>= 10.0.10240.0 < 10.0.10240.2082610.0.10240.20826
microsoftwindows_10_version_1607>= 10.0.14393.0 < 10.0.14393.751510.0.14393.7515
microsoftwindows_10_version_1809>= 10.0.17763.0 < 10.0.17763.653210.0.17763.6532
microsoftwindows_10_version_21h2>= 10.0.19043.0 < 10.0.19044.513110.0.19044.5131
microsoftwindows_10_version_22h2>= 10.0.19045.0 < 10.0.19045.513110.0.19045.5131
microsoftwindows_11_version_22h2>= 10.0.22621.0 < 10.0.22621.446010.0.22621.4460
microsoftwindows_11_version_22h3>= 10.0.22631.0 < 10.0.22631.446010.0.22631.4460
microsoftwindows_11_version_23h2>= 10.0.22631.0 < 10.0.22631.446010.0.22631.4460
microsoftwindows_11_version_24h2>= 10.0.26100.0 < 10.0.26100.231410.0.26100.2314
microsoftwindows_server_2008_r2_service_pack_1>= 6.1.7601.0 < 6.1.7601.274156.1.7601.27415
microsoftwindows_server_2008_service_pack_2>= 6.0.6003.0 < 6.0.6003.229666.0.6003.22966
microsoftwindows_server_2012_r2>= 6.3.9600.0 < 6.3.9600.222676.3.9600.22267
microsoftwindows_server_2016>= 10.0.14393.0 < 10.0.14393.751510.0.14393.7515
microsoftwindows_server_2019>= 10.0.17763.0 < 10.0.17763.653210.0.17763.6532
microsoftwindows_server_2022>= 10.0.20348.0 < 10.0.20348.284910.0.20348.2849
microsoftwindows_server_2025>= 10.0.26100.0 < 10.0.26100.231410.0.26100.2314
msrcwindows_10
msrcwindows_10_version_1607
msrcwindows_10_version_1809
msrcwindows_10_version_21h2
msrcwindows_10_version_22h2
msrcwindows_11_version_22h2
msrcwindows_11_version_23h2
msrcwindows_11_version_24h2
msrcwindows_server_2008

Detection & IOCsextracted from sources · hover to see the quote

ip92.42.96.30
urlfile://92.42.96.30/pdp.nacs.gov.ua/Certificate_Activate_45052389_005553.exe
urlfile://92.42.96.30/Activation/Certificate+AF8hFgBf-45052389+AF8-005553.exe
ip62.60.226.64
urlfile://\\62.60.226.64@80\file\4025_3980.exe
urlfile://\\62.60.226.64@80\file\3819_5987.exe
port445
domainrepublicadominica2025.ip-ddns.com
domainelyeso.ip-ddns.com
domainamuntgroupfree.ip-ddns.com
domaindonato.con-ip.com
domaincomina998.ddns-ip.net
domainnewstaticfreepoint24.ddns-ip.net
ip181.131.217.244
ip177.255.85.101
urlbitbucket.org/facturacioncol/fact/downloads/FileHosting.exe
urlbitbucket.org/facturacioncol/fact/downloads/luna.exe
urlbitbucket.org/facturacioncol/fact/downloads/Out2.exe
urlbitbucket.org/trabajo12023/proyecto/downloads/ROSAS.exe
urlbitbucket.org/trabajo12023/proyecto/downloads/Final1278685280.exe
urlbitbucket.org/trabajo12023/proyecto/downloads/AD.exe
hash3bd90557615ef95e4244bdbaa8e0e7fd949cdd3a
hash758c73ab9706ae6977f9b4601c20b3667836d3ef
hashba95ea1dcc744566a9552d9665feff035925a5c5
hash3d3248ad14dce8b6fcf416d56d8de52b07b549e7
ip45.87.246.40
urldocument-file.ru/files/documents/zakupki/MicrosoftWord.exe
uaMicrosoft-WebDAV-MiniRedir/10.0.19044
  • CVE-2024-43451 is triggered by minimal user interaction with a malicious .url file: single right-click, delete, or drag/move to another folder — not just opening it. Monitor for SMB (port 445) or WebDAV (port 80) outbound connections initiated by Windows Explorer or shell processes upon .url file interaction.
  • The exploit abuses the MSHTML engine (legacy Internet Explorer component) embedded in modern Windows to silently invoke NTLM authentication via crafted .url files using UNC path format (file://\\<attacker-IP>@<port>\<path>). Detect .url files containing 'file://' URLs pointing to remote UNC paths.
  • Blind Eagle campaigns used .url files with [InternetShortcut] sections containing UNC-style file:// URLs (e.g., file://\\<IP>@80\file\<payload>.exe) to trigger WebDAV requests and download next-stage payloads. Inspect .url file contents for this pattern.
  • The exploit .url file structure includes the registry property key [{009862A0-0000-0000-C000-000000005986}] with Prop3=19,2 or Prop3=19,9. This GUID and property value combination in .url files is a strong indicator of CVE-2024-43451 exploitation.
  • Post-exploitation tools observed in Head Mare campaigns abusing CVE-2024-43451 include Mimikatz, Secretsdump, WMIExec, and SMBExec (Impacket suite). Monitor for these process names and associated command-line activity following .url file interaction.
  • Blind Eagle used HeartCrypt Packer-as-a-Service to pack a .NET PureCrypter variant delivering Remcos RAT as the final payload. Detections for HeartCrypt-packed .NET binaries and Remcos RAT are relevant post-exploitation indicators for this campaign.
  • UAC-0194 (Russian threat actor) delivered phishing emails with .url files exploiting CVE-2024-43451 to install SparkRAT. Monitor for SparkRAT process activity and C2 connections following .url file interaction in Ukrainian-targeted environments.
  • ·CVE-2024-43451 affects ALL supported Windows versions including Windows 10/11 and Windows Server 2008 and later. The vulnerability was patched in November 2024 Patch Tuesday; however, unpatched systems remain vulnerable.
  • ·The delete and drag-to-folder trigger behaviors are specific to Windows 10/11 (and some Windows 7/8/8.1 configurations), while right-click triggering affects all Windows versions. Detection logic should account for these platform-specific differences.
  • ·Since Microsoft patched CVE-2024-43451, the unusual NTLM hash leakage behavior via right-click/delete/drag no longer occurs on patched systems. However, manual user interaction (clicking) can still trigger download and execution of malicious payloads via the .url file mechanism.
  • ·The Blind Eagle .url exploit does not directly exploit CVE-2024-43451 for NTLM hash theft, but uses the same .url file mechanism to trigger WebDAV requests (notifying the attacker of file download) and deliver payloads. Defenders should not assume .url-based WebDAV activity is exclusively NTLM-related.

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
cvelistv56.5MEDIUM
vulncheck6.5MEDIUM
cisa6.5MEDIUM
vendor_msrc6.5MEDIUM
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