Webshells Remain Popular, (Mon, Jun 22nd)
2026-06-22T19:23:45Z•47f01f6a930989e4f516948c29bb38913f2ad0efcf6550e638c6b9871a5410cf
GitHubIPv4‑mapped‑IPv6IPv6ISC StormcastJavaScriptMSI steganographyRATRemcosSSH brute forceVHDXbrowser blind spotbrute forceeBankingmalicious VHDXmalicious imagesmalicious zipphishingpodcastsecurity toolingtelemetrythreat intelwebshellwebshells
What happened
SANS ISC diary roundup (Jun 15–22, 2026) covering multiple threat observations: a newly published webshell on GitHub, an e‑banking phishing campaign leveraging an IPv4‑mapped IPv6 address, analysis of coordinated SSH brute‑force activity over three months, a guest piece on browser blind spots and security tooling limitations, a VHDX‑delivered Remcos RAT (malicious ZIP → mounted VHDX → JS → Remcos), and analysis of malicious MSI/background images. Also includes several ISC Stormcast podcast entries. The feed is informational and aggregates tactics, delivery mechanisms, and detection/analysis v3
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- sans_isc_diary
- Record identifier
- 47f01f6a930989e4f516948c29bb38913f2ad0efcf6550e638c6b9871a5410cf
- Enrichment time
- 2026-06-22T19:23:45Z
- AI-assisted enrichment
- Yes
This record may overlap with other records. Its enrichment can be incomplete or wrong, and machine assistance was used. Validate consequential decisions against the linked source and your own environment.