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Carbanak Malware

yara HIGH Yara-Rules
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This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at Yara-Rules →
Retrieved: 2026-05-20T11:00:00Z · Confidence: medium

Hunt Hypothesis

Carbanak Malware is likely being used to exfiltrate sensitive data through covert network communications. SOC teams should proactively hunt for this behavior in Azure Sentinel to detect and mitigate advanced persistent threat activity before significant data loss occurs.

YARA Rule

rule Carbanak_0915_1
{

    meta:
        description = "Carbanak Malware"
        author = "Florian Roth"
        reference = "https://www.csis.dk/en/csis/blog/4710/"
        date = "2015-09-03"
        score = 70

    strings:
        $s1 = "evict1.pdb" fullword ascii
        $s2 = "http://testing.corp 0" fullword ascii

    condition:
        uint16(0) == 0x5a4d and filesize < 100KB and 1 of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 2 string patterns in its detection logic.

References

False Positive Guidance

Original source: https://github.com/Yara-Rules/rules/blob/main/malware/APT_Carbanak.yar