Harvester Deploys Linux GoGra Backdoor in South Asia Using Microsoft Graph API

The threat actor known as Harvester has been attributed to a new Linux version of its GoGra backdoor deployed as part of attacks likely targeting entities in South Asia. "The malware uses the legitimate Microsoft Graph API and Outlook mailboxes as a covert command-and-control C2 channel, allowing...

Support Statement — Exchange Web Services (EWS) Deprecation

Challenge Microsoft has announced the deprecation of Exchange Web Services EWS in Exchange Online, with the initial phase-out target of October 1, 2026. Starting July 1, 2026, Microsoft will begin blocking EWS access for Frontline Worker mailbox types Kiosk, F1, and F3 as the first enforcement st...

EUVD-2024-0260

Malicious code in bioql PyPI...

New Malware Campaign Exploits Microsoft Graph API to Infect Windows

FortiGuard Labs discovers an advanced attack using modified Havoc Demon and SharePoint. Explore the attack's evasion techniques and security measures...

FINALDRAFT Malware Exploits Microsoft Graph API for Espionage on Windows and Linux

Threat hunters have shed light on a new campaign targeting the foreign ministry of an unnamed South American nation with bespoke malware capable of granting remote access to infected hosts. The activity, detected in November 2024, has been attributed by Elastic Security Labs to a threat cluster i...

CVE-2024-21632

omniauth-microsoftgraph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases...

New Go-based Backdoor GoGra Targets South Asian Media Organization

An unnamed media organization in South Asia was targeted in November 20233 using a previously undocumented Go-based backdoor called GoGra. "GoGra is written in Go and uses the Microsoft Graph API to interact with a command-and-control C&C server hosted on Microsoft mail services," Symantec, part ...

Hackers Increasingly Abusing Microsoft Graph API for Stealthy Malware Communications

Threat actors have been increasingly weaponizing Microsoft Graph API for malicious purposes with the aim of evading detection. This is done to "facilitate communications with command-and-control C&C infrastructure hosted on Microsoft cloud services," the Symantec Threat Hunter Team, part of...

CVE-2024-21632

omniauth-microsoftgraph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases...

Information disclosure

omniauth-microsoftgraph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases...

CVE-2024-21632 omniauth-microsoft_graph vulnerable to account takeover (nOAuth)

omniauth-microsoftgraph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases...

CVE-2024-21632 omniauth-microsoft_graph vulnerable to account takeover (nOAuth)

omniauth-microsoftgraph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases...

CVE-2024-21632 omniauth-microsoft_graph vulnerable to account takeover (nOAuth)

omniauth-microsoftgraph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases...

Microsoft Incident Response lessons on preventing cloud identity compromise

Microsoft observed a surge in cyberattacks targeting identities in 2023, with attempted password-based attacks increasing by more than tenfold in the first quarter of 2023 compared to the same period in 2022. Threat actors leverage compromised identities to achieve a significant level of access t...

Microsoft Incident Response lessons on preventing cloud identity compromise

Microsoft observed a surge in cyberattacks targeting identities in 2023, with attempted password-based attacks increasing by more than tenfold in the first quarter of 2023 compared to the same period in 2022. Threat actors leverage compromised identities to achieve a significant level of access t...

Flea APT Targets Foreign Ministries with New Backdoor.Graphican

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary Flea APT15 targeted foreign ministries with their new backdoor, Backdoor.Graphican, leveraging Microsoft Graph API and OneDrive for C&C communication. To receive real-time threat advisories, please follo...

Chinese Hacker Group 'Flea' Targets American Ministries with Graphican Backdoor

Foreign affairs ministries in the Americas have been targeted by a Chinese state-sponsored actor named Flea as part of a recent campaign that spanned from late 2022 to early 2023. The cyber attacks, per Broadcom's Symantec, involved a new backdoor codenamed Graphican. Some of the other targets...

New APT Group Red Stinger Targets Military and Critical Infrastructure in Eastern Europe

A previously undetected advanced persistent threat APT actor dubbed Red Stinger has been linked to attacks targeting Eastern Europe since 2020. "Military, transportation, and critical infrastructure were some of the entities being targeted, as well as some involved in the September East Ukraine...

Reportly - An AzureAD User Activity Report Tool

Reportly is an AzureAD user activity report tool. About the tool This is a tool that will help blue teams during a cloud incident. When running the tool, the researcher will enter as input a suspicious user and a time frame and will receive a report detailing the following: 1. Information about t...

Outlining a new SiestaGraph backdoor

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The Foreign Affairs Office of an Association of Southeast Asian Nations ASEAN member is targeted by multiple threat actors who are coordinating active campaigns via a vulnerable Microsoft Exchange server...