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smsfraud chinese

yara LOW Yara-Rules
community
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: 2026-05-09T11:00:00Z · Confidence: medium

Hunt Hypothesis

The SMSFraud Chinese rule detects potential malicious activity involving SMS-based fraud originating from Chinese IP addresses, which may indicate phishing or credential theft attempts. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage threats that could escalate into data breaches or financial loss.

YARA Rule

rule smsfraud : ganga android
{
	meta:
		author = "Fernando Denis https://twitter.com/fdrg21"
		reference = "https://koodous.com/"
		description = "smsfraud chinese"
		sample = "e6ef34577a75fc0dc0a1f473304de1fc3a0d7d330bf58448db5f3108ed92741b"

	strings:
		$string_a_1 = "HHHEEEEEEBBBBBB??????;;;;;;888888444444000000,,,,,,''''''''''''######OOO###"
		$string_a_2 = "2e6081a2-a063-45c7-ab90-5db596e42c7c"

	condition:
		androguard.package_name("com.yr.sx") or
		all of ($string_a_*) or
		androguard.activity(/com.snowfish.cn.ganga.offline.helper.SFGameSplashActivity/)
		
		
}

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/deprecated/Android/Android_malware_SMSsender.yar