Iran was sabotaged with an unprecedented cyber attack on the eve of its failed attempt to launch a satellite into orbit, the regime has claimed.

Last night, a rocket launch from Imam Khomeini Spaceport was scuppered due to low speeds which stopped it breaking into orbit.

It was a humiliating blow to Tehran, which the United States believes is developing rocket technology to advance nuclear capabilities.

But hours before the failure, Iran's deputy information minister Hamid Fatah had revealed the country's communications network had been hit with 'the most widespread attack in Iranian history'.

He tweeted: 'Hackers today launched the most widespread attack in Iranian history against the country's infrastructure.

'Millions of origin targeted millions of destinations and are seeking worldwide disruption to Iran's Internet network'.

It is unclear if the hack caused the failure of the rocket launch, which happened at Imam Khomeini Spaceport in Iran's Semnan province, some 145 miles southeast of Tehran.

A Simorgh, or 'Phoenix', rocket could not put the Zafar 1 communications satellite into orbit due to a low speed, state TV reported.

Defence Ministry space program spokesman Ahmad Hosseini said: 'Stage-1 and stage-2 motors of the carrier functioned properly and the satellite was successfully detached from its carrier, but at the end of its path it did not reach the required speed for being put in the orbit.'

Hosseini still sought to portray the failure as a 'remarkable' achievement for its space program.

Previous Simorgh launches of the 80-ton satellite carrier suffered other failures.

An Iranian rocket (launch pictured) failed to put a satellite into orbit on Sunday in the latest setback for a their suspected ballistic missile program

This satellite image from Maxar Technologies shows preparations at a rocket launch pad at the Imam Khomeini Space Center in Iran's Semnan province

In the days leading up to the launch, Iranian officials had been promoting the mission, including the country's Information and Communications Technology Minister Mohammad Javad Azari Jahromi.

His quick rise through the Islamic Republic's carefully managed political system already is generating speculation he could be a candidate for Iran's 2021 presidential campaign.

Jahromi acknowledged the unsuccessful launch in a tweet shortly after the news broke on state TV, comparing it to a 'few samples of US launch failures.'

'But We're UNSTOPPABLE! We have more Upcoming Great Iranian Satellites!' Jahromi tweeted in English, including a satellite emoji.

He later tweeted in Farsi that 'sometimes life does not go the way we like it to go.' He added: 'Please do not pay attention to fake news.'

The launch had been planned amid celebrations ahead of the February anniversary of Iran's 1979 Islamic Revolution.

Iran routinely unveils technological achievements for its armed forces, its space program and its nuclear efforts during this time.

Satellite images by Colorado-based Maxar Technologies showed the launch tower for the rocket bore massive images of the revolution's leader, the late Ayatollah Ruhollah Khomeini, and the current Iranian supreme leader, Ayatollah Ali Khamenei.

Iran had spent just under two million euros to build the Zafar 1, Jahromi previously said.

Officials planned for the satellite, whose name means 'victory' in Farsi, to remain in orbit for 18 months before crashing back through the Earth's atmosphere and disintegrating.

Sunday's failure came after two failed launches of the Payam and Doosti satellites last year, as well as a launchpad rocket explosion in August.

A separate fire at the Imam Khomeini Space Center in February 2019 also killed three researchers, authorities said at the time.

The launch happened at 7.15pm local time at Imam Khomeini Spaceport (pictured) in Iran's Semnan province, some 145 miles southeast of Tehran

This satellite image from Maxar Technologies, shows activity at the Imam Khomeini Space Center in Iran's Semnan province

The rocket explosion in August drew even the attention of US President Donald Trump, who later tweeted what appeared to be a classified surveillance image of the launch failure.

The three failures in a row raised suspicion of outside interference in Iran's program, something Trump himself hinted at by tweeting that the US 'was not involved in the catastrophic accident.'

Iran postponed the launch from Saturday, the same day the country faced a major cyberattack.

The US alleges such satellite launches defy a UN Security Council resolution calling on Iran to undertake no activity related to ballistic missiles capable of delivering nuclear weapons.

American officials, as well as European nations, worry such launches could help Iran develop intercontinental ballistic missiles capable of carrying nuclear weapons.

The State Department did not immediately respond to a request for comment and the White House did not immediately acknowledge the launch.

Iran, which long has said it does not seek nuclear weapons, maintains its satellite launches and rocket tests do not have a military component.

Tehran also says it has not violated the UN resolution as it only 'called upon' Tehran not to conduct such tests.

Western missile experts have also questioned the US contention that Iran's program could have a dual use for nuclear weapons.

Iranian Supreme Leader Ayatollah Ali Khamenei speaking during a meeting with members of Iranian air forces in Tehran on Sunday

The rocket explosion in August drew even the attention of US President Donald Trump (pictured yesterday speaking in the East Room of the White House for the Governor's Ball)

Over the past decade, Iran has sent several short-lived satellites into orbit and in 2013 launched a monkey into space.

The launch comes amid heightened tensions between Iran and the U.S. since Trump unilaterally withdrew America from Tehran's 2015 nuclear deal with world powers in May 2018.

Iran since has begun breaking terms of the deal limiting its enrichment of uranium.

Meanwhile, a series of attacks across the Persian Gulf culminated with a U.S. drone strike in Baghdad killing Iran's Revolutionary Guard general Qassem Soleimani and a retaliatory ballistic missile strike by Iran on Iraqi bases housing American troops earlier this month.

Iran also accidentally shot down a Ukrainian commercial airliner taking off from Tehran amid the tensions, killing all 176 people on board.

Earlier Sunday, Iran unveiled a new ballistic missile.