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  • Expert founds EternalRocks, a malware that uses 7 NSA Hacking Tools

Expert founds EternalRocks, a malware that uses 7 NSA Hacking Tools

Pierluigi Paganini May 23, 2017

A security expert discovered a new worm, dubbed EternalRocks, that exploits the EternalBlue flaw to spread itself like WannaCry ransomware.

The security expert Miroslav Stampar, a member of the Croatian Government CERT, has discovered a new worm, dubbed EternalRocks, that exploits the EternalBlue flaw in the SMB protocol to spread itself like the popular WannaCry ransomware.

Stampar discovered the EternalRocks after it infected his SMB honeypot, he called the malware ‘DoomsDayWorm.’

If I will be asked to choose a name, let it be a DoomsDayWorm 😀 c52f20a854efb013a0a1248fd84aaa95

— Miroslav Stampar (@stamparm) May 18, 2017

Stampar discovered that the EternalRocks disguises itself as WannaCry, but instead of delivering a ransomware, it takes over the affected computer to power other attacks.

The researcher decompiled an older sample (start of May) of EternalRocks and published it on Github.

Just captured 406ac1595991ea7ca97bc908a6538131 and 5c9f450f2488140c21b6a0bd37db6a40 in MS17-010 honeypot. MSIL/.NET #WannaCry copycat(s) pic.twitter.com/VVMrAg0Gib

— Miroslav Stampar (@stamparm) May 17, 2017

Info on (new) EternalRocks worm can be found on https://t.co/oahygJdhSi. Will keep it updated, along with @_jsoo_

— Miroslav Stampar (@stamparm) May 18, 2017

Unlike the WannaCry Ransomware that leverages the two NSA hacking tools EternalBlue and DoublePulsar, EternalRocks exploits seven exploits leaked by Shadow Brokers and its code doesn’t include a kill-switch.

EternalRocks was developed to avoid detection and to remain undetectable on the target system, it uses the following NSA exploits:

  1. EternalBlue — SMBv1 exploit tool
  2. EternalRomance — SMBv1 exploit tool
  3. EternalChampion — SMBv2 exploit tool
  4. EternalSynergy — SMBv3 exploit tool
  5. SMBTouch — SMB reconnaissance tool
  6. ArchTouch — SMB reconnaissance tool
  7. DoublePulsar — Backdoor Trojan

EternalRocks downloads all the above SMB exploits to the infected computer, then it scans the internet for open SMB ports on other systems to compromise.

EternalRocks

Giving a close look at the list we can find the SMB exploits EternalBlue, EternalChampion, EternalSynergy and EternalRomance.

The DoublePulsar is the exploit used by malware to implement network worm capabilities, while the SMBTouch and ArchTouch are SMB reconnaissance tools, designed to scan for systems hacking open SMB ports exposed on the Internet.

The EternalRocks works in two stages:

During the first stage, EternalRocks downloads the Tor web browser on the affected computers, then it uses the application to connect to the command-and-control (C&C) server located on the Tor network.

After 24 hours, the second stage starts, the malware delays its action in the attempt to avoid sandboxing techniques.

“First stage malware UpdateInstaller.exe (got through remote exploitation with second stage malware) downloads necessary .NET components (for later stages)TaskScheduler and SharpZLib from Internet, while dropping svchost.exe (e.g. sample) and taskhost.exe (e.g. sample). Component svchost.exe is used for downloading, unpacking and running Tor from archive.torproject.org along with C&C (ubgdgno5eswkhmpy.onion) communication requesting further instructions (e.g. installation of new components).” wrote the researcher.

“Second stage malware taskhost.exe (Note: different than one from first stage) (e.g. sample) is being downloaded after a predefined period (24h) from http://ubgdgno5eswkhmpy.onion/updates/download?id=PC and run. After initial run it drops the exploit pack shadowbrokers.zip and unpacks contained directories payloads/, configs/ and bins/. After that, starts a random scan of opened 445 (SMB) ports on Internet, while running contained exploits (inside directory bins/) and pushing the first stage malware through payloads (inside directory payloads/). Also, it expects running Tor process from first stage to get further instructions from C&C.“

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Pierluigi Paganini

(Security Affairs – EternalRocks, EternalBlue vulnerability)

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critical infrastructure Cybercrime EternalRocks Ethernal Blue Hacking malware wannacry ransomware

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