Malware

ForgCookie

For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

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MITRE ATT&CK

Techniques & procedures

4 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique

T1566PhishingEvidence1

Their investigation began by analyzing phishing emails that posed as business documents, carefully crafted to mimic a trusted service.

Credential Access

2 techniques

T1539Steal Web Session CookieEvidence4

A notable aspect of the Forg365 platform is that it offers an extension named ForgCookie for Chromium-based browsers... designed for continued access to the compromised accounts... Captures resulting Microsoft cookies across Microsoft domains.

T1557Adversary-in-the-MiddleEvidence1

For AiTM phishing, the platform uses a proxy for the authentication requests and data exchanged between the Microsoft infrastructure and the target account, capturing session cookies in the process.

Collection

2 techniques

T1185Browser Session HijackingEvidence2

A browser extension called ForgCookie reportedly automatically refreshes Microsoft single sign-on cookies, helping criminals retain browser-based access after the victim has authenticated.

T1557Adversary-in-the-MiddleEvidence1

For AiTM phishing, the platform uses a proxy for the authentication requests and data exchanged between the Microsoft infrastructure and the target account, capturing session cookies in the process.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

the hacker newsNews

Jul 13, 2026

Forg365 PhaaS Targets Microsoft 365 with Device Code and AitM Session Theft

A browser extension within the Forg365 ecosystem that refreshes or injects Microsoft authentication cookies to maintain access to compromised Microsoft accounts and silently establish authenticated browser sessions.

bleeping computerNews

Jul 9, 2026

New Forg365 phishing platform uses AI to target Microsoft 365 accounts

A malicious browser extension used by Forg365 operators to refresh Microsoft SSO cookies via silent OAuth flows, maintaining persistent access to compromised Microsoft accounts without re-authentication.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.

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IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping4

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.

Back to malware

Malware

ForgCookie

For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

Start free trial

MITRE ATT&CK

Techniques & procedures

4 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique

T1566PhishingEvidence1

Their investigation began by analyzing phishing emails that posed as business documents, carefully crafted to mimic a trusted service.

Credential Access

2 techniques

T1539Steal Web Session CookieEvidence4

T1557Adversary-in-the-MiddleEvidence1

For AiTM phishing, the platform uses a proxy for the authentication requests and data exchanged between the Microsoft infrastructure and the target account, capturing session cookies in the process.

Collection

2 techniques

T1185Browser Session HijackingEvidence2

A browser extension called ForgCookie reportedly automatically refreshes Microsoft single sign-on cookies, helping criminals retain browser-based access after the victim has authenticated.

T1557Adversary-in-the-MiddleEvidence1

For AiTM phishing, the platform uses a proxy for the authentication requests and data exchanged between the Microsoft infrastructure and the target account, capturing session cookies in the process.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

the hacker newsNews

Jul 13, 2026

Forg365 PhaaS Targets Microsoft 365 with Device Code and AitM Session Theft

bleeping computerNews

Jul 9, 2026

New Forg365 phishing platform uses AI to target Microsoft 365 accounts

What this page doesn’t show

The version that knows your environment.

Start free trial

IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping4

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.