[bell-cot]

At least from CNN's story, it seems unclear whether this was an attack by a known pro-Iran group, with an "in retaliation for killing schoolgirls" tagline. Or an attack by some unknown group(s), with such a tagline.

Given how many hacking groups don't like the US, the latter would tell us almost nothing about the attackers' actual identities and objectives.

[jajuuka]

This definitely seems a little odd. Very convenient time to slap a "and they are pro-Iran" label on it.

[bell-cot]

Yeah, from the Pentagon's or CNN's PoV.

Though if I was a hacking group with little interest in Iran, hitting a US-based target...I might make some pro-Iran noises, trying to confuse the attribution. Or to curry favor with China, Russia, NK, ...

(And I'm not ruling out a nation-state actor being directly behind this.)