CVSS 9.3 CRITICAL Bulletin: MS14-012 Published: 2014-02-14

CVE-2014-0322: Microsoft Internet Explorer CMarkup Use-After-Free (Operation SnowMan)

Technical intelligence and weaponization dossier for CVE-2014-0322. Documented exploitation across 2 active malware families totaling 14,121 analyzed telemetry samples.

Attributed Families
2
Sample Volume
14,121
CVSS Vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Official NIST NVD
View NVD Record →

Vulnerability Specifications & Root Cause

Vulnerability ID CVE-2014-0322
Common Name / Bulletin Microsoft Internet Explorer CMarkup Use-After-Free (Operation SnowMan) (MS14-012)
CWE Classification CWE-416: Use After Free
Affected Software & Versions Microsoft Internet Explorer 9 and 10
Technical Root Cause Use-after-free in MSHTML CMarkup objects when processing memory references via Adobe Flash ActionScript heap-spray, weaponized zero-day by DarkHotel.
Associated ATT&CK Techniques
  • T1189 — Associated ATT&CK Technique
  • T1204 — Associated ATT&CK Technique

Malware Families Weaponizing CVE-2014-0322

Empirical catalog telemetry verifies that the following 2 malware families weaponize this vulnerability for initial access, privilege escalation, or lateral movement:

2 families
Malware Family Category Catalog Samples Operational Profile
zusyBanking Trojan14,120Tinba (formally designated in AV classification as Zusy or IlliBanker, and colloquially celebrated as the 'Tiny Banker') is a notoriously compact banking trojan...
darkhotelBackdoor1Backdoor:Win32/Darkhotel is an advanced, highly surgical cyber-espionage threat campaign and modular backdoor active since at least 2007, first publicly reveale...

Attributed Threat Actors & Syndicates

Threat intelligence confirms the following adversaries weaponize CVE-2014-0322 in enterprise intrusions and campaign toolkits:

SOC Detection & Threat Hunting Guidance

Threat hunting leads and behavioral telemetry patterns to identify weaponized exploitation of CVE-2014-0322 in enterprise networks:

Flash files hosted alongside SWF exploit payloads referencing memory offsets to CMarkup vftable addresses.

Remediation & Defensive Hardening

SOC containment checklist and attack surface reduction measures to neutralize exploitation:

Actionable Guidance: Apply MS14-012; migrate users off legacy Internet Explorer browsers.

For end-to-end incident response procedures, consult our dedicated playbook: Backdoor & RAT Protection for Businesses →

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