Rewterz Threat Alert – Fake CoronaAntivirus Distributing BlackNET remote administration tool

Severity

Medium

Analysis Summary

Scammers and malware authors are taking advantage of the coronavirus crisis in full swing. We have seen a number of spam campaigns using COVID-19 as a lure to trick people into installing a variety of malware, but especially data stealers. Scammers are trying to make you install antivirus that protects against the actual COVID-19 virus infecting people across the world.

The website has a message that says:

Our scientists from Harvard University have been working on a special AI development to combat the virus using a windows app. Your PC actively protects you against the Coronaviruses (Cov) while the app is running.

The victims are infected with malware and turns your PC into bot to receive commands with the file packed with commercial packer Themida.

• hxxps[://]instaboom-hello[.]site//connection[.]php?data=[removed]
• hxxps[://]instaboom-hello[.]site//getCommand[.]php?[removed]
• hxxps[://]instaboom-hello[.]site//receive[.]php?command=[removed]  

Impact

• Data theft
• Exposure of sensitive information

Indicators of Compromise

Domain Name

• instaboom-hello[.]site
• antivirus-covid19[.]site

MD5

• 1daec173bef2d6c442c4a59db74be63d

SHA-256

• 146dd15ab549f6a0691c3a728602ce283825b361aa825521252c94e4a8bd94b4

SHA1

• 6b527fc7232188e3afcace62f625df406af548be

URL

• http[:]//antivirus-covid19[.]site/update[.]exe

Remediation

• Block all threat indicators at your respective controls.
• Always be suspicious about emails sent by unknown senders.
• Never click on the links/attachments sent by unknown senders.