New HollowGraph malware uses Microsoft Graph for stealthy C2 comms
2026-07-20T19:23:29Z•888f55e2c2c9181d9e420ff07d630e6fac7d385ff268b1312271bf920ec7ea4e
7-ZipACR StealerCVE-2026-6875DDoSHollowGraphHugging Face breachMicrosoft 365Microsoft GraphOpenSSLServiceNowWSUSWordPressautonomous agentcalendar C2command-and-controlcredential theftdata exfiltrationexploitationincident responsemalwarepatchesremote code executionsupply-chainwp2shell
What happened
Multiple active threats and high-impact incidents reported: HollowGraph malware leverages Microsoft Graph (calendar entries in Microsoft 365 mailboxes) as a stealthy C2 and exfiltration channel; a critical ServiceNow AI Platform remote code execution vulnerability (CVE-2026-6875) is now being exploited in the wild; Hugging Face disclosed a breach via an autonomous AI agent leading to exfiltration of internal datasets and credentials. Additional coverage includes exploited and patched RCEs (7-Zip, WordPress “wp2shell”), a surge in ACR Stealer activity targeting enterprise credentials/tokens, an
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- bleepingcomputer
- Record identifier
- 888f55e2c2c9181d9e420ff07d630e6fac7d385ff268b1312271bf920ec7ea4e
- Enrichment time
- 2026-07-20T19:23:29Z
- 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.