Vishing via Microsoft Teams Facilitates DarkGate Malware Intrusion

Category	Details
Threat Actors	Not explicitly named; involved in DarkGate malware distribution using vishing and remote access tools.
Campaign Overview	Utilized vishing to impersonate IT support, instruct victims to download AnyDesk, and install DarkGate malware.
Target Regions (Or Victims)	Unspecified, but likely corporate entities targeted through phishing and social engineering tactics.
Methodology	Voice phishing (vishing), impersonation, AnyDesk installation, DLL side-loading, AutoIt scripts, PowerShell commands.
Product Targeted	MicrosoftEdgeUpdateCore.exe (used for injection), AnyDesk, Trend Micro Apex One™ targeted for evasion testing.
Malware Reference	DarkGate malware, AutoIt scripts, script.a3x, SystemCert.exe, and StaticSrv.exe.
Tools Used	AnyDesk, AutoIt3.exe, cmd.exe, PowerShell, cscript, Vision One XDR solutions.
Vulnerabilities Exploited	DLL side-loading technique to execute malicious payloads.
TTPs	Social engineering, vishing, persistence via registry, process injection, evasion of AV products, network reconnaissance.
Attribution	Not attributed to a specific group; focus on phishing and malware distribution through social engineering.
Recommendations	Vet third-party support, enforce MFA, whitelist remote tools, employee training, layered security approach.
Source	Trend Micro

Read full article: https://www.trendmicro.com/en_us/research/24/l/darkgate-malware.html

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