ISIS and the weird text running on Whatsapp

It's a strange story which shows how easy it is to fool so many people: a storm broke out today (Monday), on haredi Whatsapp groups, with the publication of an ancient, seemingly suggesting the growth of the ISIS organization.
Whatsapp groups published a section about the ISIS organization, which is a "klipah that would make a big fuss and fight and a major war between seventy nations and they will kill those and those will kill them".
The semi-Kabbalistic extract states that, ''ISIS (in Hebrew DAESH) is an abbreviation (acronym), of Esau the murderer (Esav shofech damim), and its numerology value is "Achishena" (I will hasten it – the geulah), thereby linking the organization and its actions to the redemption period.
The passage which passed virally from one group to the next was supposedly taken from Yalkut Shimoni, a midrashic book written by Rabbi Shimon Ashkenazi of Frankfurt and was first printed in 5281 (some 500 years ago).
It was enough for anyone who ever learned the Yalkut Shimoni to know that these words were certainly not said by him and do not match his midrashic style. Diligent users of SMS combed through the Yalkut and did not find the passage full of acronyms among its pages.
But soon the Whatsapp groups were bombed with another bomb and amendment of the mistake. According to the new message, the real source was found in the book "Pilei Hakadmonim".
"It's not Yalkut Shimoni," the new message read, rich in imagination, "but in the book Pilei Hakadmonim written by Rabbi Eliezer of Tshronchevka some 250 years ago, spread for the benefit of the public. This is the source, an ancient book they found in the public library of Moscow and was transferred to Chabad two weeks ago. "
The post moved from group to the next like wildfire. Above all was the Hidabrut site for the dissemination of Judaism, which brought it to the letter.
What is the real source?
This is an extract from last week published in a newsletter called 'Ohr Chai' by the mekubal Rabbi Haim Adani, a newsletter filled with Divrei Torah and acronyms in the same vein of the Sephardic version of kabalah. Disappointing.

'בחדרי' גם ברשתות החברתיות - הצטרפו!