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Arnold Chan

@slaz
Trusted contributorCompletionist
2 followers2,100 downloads4,386 copies51 likes26,182 views

7,555 detections

This rule detects activities associated with the AMOS (Atomic macOS Stealer) malware family by monitoring for known malicious file hashes on endpoints and network communication with domains linked to its command-and-control infrastructure.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
106
This rule detects GitHub Actions workflows that explicitly reference specific 'actions-cool' GitHub actions using a known-bad mutable version tag ('@v2.2.1'). This tag corresponds to malicious code introduced into these repositories, allowing for potential CI/CD pipeline poisoning and supply chain compromise.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
This rule detects GitHub Actions workflows that explicitly reference specific 'actions-cool' GitHub actions using a known-bad mutable version tag ('@v2.2.1'). This tag corresponds to malicious code introduced into these repositories, allowing for potential CI/CD pipeline poisoning and supply chain compromise.
avatar
Arnold Chan@slaz
avatar
Midnight Slayer
1 month ago
000
This rule detects GitHub Actions workflows that explicitly reference specific 'actions-cool' GitHub actions using a known-bad mutable version tag ('@v2.2.1'). This tag corresponds to malicious code introduced into these repositories, allowing for potential CI/CD pipeline poisoning and supply chain compromise.
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects the use of specific malicious versions (v2.2.1) of GitHub Actions (actions-cool/issues-helper or actions-cool/maintain-one-comment) in workflow runs that also involve the exposure or referencing of the GITHUB_TOKEN, indicating potential credential theft and CI/CD pipeline compromise.
avatar
Arnold Chan@slaz
Defender - KQL
1 month ago
000
This rule detects activities associated with the AMOS (Atomic macOS Stealer) malware family by monitoring for known malicious file hashes on endpoints and network communication with domains linked to its command-and-control infrastructure.
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Arnold Chan@slaz
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Hunters
2 months ago
206
Detects a specific pattern indicative of malicious GitHub Actions reactivation. The rule identifies a workflow run that fails quickly (e.g., due to repository access issues) followed immediately by a successful run of the same workflow with a significantly longer duration. This behavior is consistent with resolving issues related to malicious actions-cool repository workflows.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
Detects a specific pattern indicative of malicious GitHub Actions reactivation. The rule identifies a workflow run that fails quickly (e.g., due to repository access issues) followed immediately by a successful run of the same workflow with a significantly longer duration. This behavior is consistent with resolving issues related to malicious actions-cool repository workflows.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
Detects a specific pattern indicative of malicious GitHub Actions reactivation. The rule identifies a workflow run that fails quickly (e.g., due to repository access issues) followed immediately by a successful run of the same workflow with a significantly longer duration. This behavior is consistent with resolving issues related to malicious actions-cool repository workflows.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
000
Detects the suspicious reactivation of 'actions-cool/issues-helper' or 'actions-cool/maintain-one-comment' repositories within a known malicious window (September 14-19, 2026). These repositories were involved in the 'Mini Shai-Hulud' supply-chain attack. This rule identifies when previously disabled repositories are re-enabled or modified to become active, potentially re-exposing malicious release tags to downstream users.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
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