The Certificate Decoding Illusion: How Blank Grabber Stealer Hides Its Loader

    Date: 04/10/2026

    Severity: High

    Summary

    BlankGrabber is a Python-based information stealer designed to extract sensitive data such as browser credentials, session tokens, and system details. Discovered in 2023 by security researchers, it is known for its modular design and fast evolution to evade detection. The malware is commonly spread through social engineering and phishing campaigns. Typical delivery methods include cracked software, malicious Discord files, and fake GitHub repositories posing as legitimate tools. Once executed, it maintains persistence and sends stolen data to attacker-controlled command-and-control servers.

    Indicators of Compromise (IOC) List

    CVE : 

    CVE-2024-27198

    CVE-2024-27199

    Hash : 

    4317201817b69553c0120ea4053da8ec

    2321100d9c75f80a6eb539d7b88214e517525502
    268d12a71b7680e97a4223183a98b565cc73bbe2ab99dfe2140960cc6be0fc87

    ac36b970704881c7656e8fdd7e8c532e22896b97a47acef5ca624d7701bf991

    Gurucul Threat Detection and Incident Response (TDIR) Queries for Detection

    Detection Query 1 :

    md5hash IN ("4317201817b69553c0120ea4053da8ec")

    Detection Query 2 :

    sha1hash IN ("2321100d9c75f80a6eb539d7b88214e517525502")

    Detection Query 3 :

    sha256hash IN ("268d12a71b7680e97a4223183a98b565cc73bbe2ab99dfe2140960cc6be0fc87","ac36b970704881c7656e8fdd7e8c532e22896b97a47acef5ca624d7701bf991")

    Reference: 

    https://www.splunk.com/en_us/blog/security/blankgrabber-trojan-stealer-analysis-detection.html 

    https://otx.alienvault.com/pulse/69c643beac5889d953fd8ba4    


    Tags

    MalwareVulnerabilityPhishingCVE-2024InfostealerSocial EngineeringGitHubPython

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