Tag: microsoft teams

2 Attack Reports | 0 Vulnerabilities

Attack reports

Two ransomware campaigns tracked using 'email bombing,' Microsoft Teams 'vishing'

Sophos MDR has identified two threat clusters, STAC5143 and STAC5777, utilizing Microsoft Office 365 to gain unauthorized access to organizations. Both groups employ email bombing and fake tech support social engineering via Microsoft Teams to deliver malware. STAC5143 uses Java and Python-based to…
ransomware
black basta
vishing
microsoft teams
2025-01-21
office 365
stac5777
stac5143
email bombing
Published: January 21, 2025
Downloadable IOCs: 15

Malvertising Campaign Leads to Execution of Oyster Backdoor

Rapid7 has observed a recent malvertising campaign that lures users into downloading malicious installers for popular software such as Google Chrome and Microsoft Teams.
malware
powershell
persistence
execution
malicious
python script
2024-06-24
lnk file
schtasks
json
microsoft teams
temp directory
http post
oyster main
Published: June 24, 2024
Downloadable IOCs: 13
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