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Detects Codoso APT PGV_PVID Malware

yara LOW Yara-Rules
aptcommunity
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: 2026-05-20T23:00:01Z · Confidence: medium

Hunt Hypothesis

The hypothesis is that the detection of Codoso APT PGV_PVID Malware indicates potential adversary persistence and lateral movement within the network. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage APT activity before it leads to data exfiltration or system compromise.

YARA Rule

rule Codoso_PGV_PVID_6
{

    meta:
        description = "Detects Codoso APT PGV_PVID Malware"
        author = "Florian Roth"
        reference = "https://www.proofpoint.com/us/exploring-bergard-old-malware-new-tricks"
        date = "2016-01-30"
        hash = "4b16f6e8414d4192d0286b273b254fa1bd633f5d3d07ceebd03dfdfc32d0f17f"

    strings:
        $s0 = "rundll32 \"%s\",%s" fullword ascii
        $s1 = "/c ping 127.%d & del \"%s\"" fullword ascii

    condition:
        uint16(0) == 0x5a4d and filesize < 6000KB and all 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_Codoso.yar