Sneed-Reactivity/yara-mikesxrs/Blackberry/HeaderTip.yar

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rule HeaderTip{
meta:
description = "Detects HeaderTip"
reference = "https://blogs.blackberry.com/en/2022/04/threat-thursday-headertip-backdoor-shows-attackers-from-china-preying-on-ukraine"
author = "BlackBerry Threat Research Team"
date = "2022-04-06-"
license = "This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team"
strings:
$s1 = "type %temp%\\officecleaner.dat >> %objfile%"
$s2 = "product2020.mrbasic.com" wide
condition:
filesize < 750KB and all of them
}