diff --git a/uBO list extensions/Dandelion Sprout's Anti-Malware List — AdGuardOnlyEntries.txt b/uBO list extensions/Dandelion Sprout's Anti-Malware List — AdGuardOnlyEntries.txt
index 379fa5f59..f255b6067 100644
--- a/uBO list extensions/Dandelion Sprout's Anti-Malware List — AdGuardOnlyEntries.txt	
+++ b/uBO list extensions/Dandelion Sprout's Anti-Malware List — AdGuardOnlyEntries.txt	
@@ -1,2 +1,5 @@
 ! For when one really doesn't want to have a harder time with uBO's log error checker.
 /^172\.255\.6\.(\d{1,2}|2.*|1[0-689].*|17[0-689])\$/$network
+
+! Very experimental entry; see https://github.com/DandelionSprout/adfilt/issues/950 and https://www.techspot.com/news/77949-ccleaner-could-install-avast-anti-virus-without-permission.html
+||avast.$app=CCleaner.exe|CCleaner64.exe|CCleanerCloudAgent.exe|ccsetup617.exe|ccsetup618.exe|ccsetup619.exe|ccsetup620.exe|ccsetup621.exe|ccsetup622.exe|ccsetup623.exe|ccsetup624.exe|ccsetup625.exe|ccsetup70.exe