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Rewterz Threat Advisory –CVE-2021-28809 – QNAP Improper Access Control Vulnerability
July 6, 2021
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Rewterz Threat Alert – Remcos RAT – Active IOCs
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Rewterz Threat Alert – FormBook Malware – Active IOCs

Severity

Medium

Analysis Summary

FormBook is an information-stealer malware that has been active since 2016. The info-stealer malware’s capabilities include stealing credentials, capturing screenshots of victim’s desktop, monitoring clipboard, keystroke logging, clearing browser cookies, downloading and executing files, uploading and removing bots, launching commands via ShellExecute, downloading and unpacking ZIP archive, rebooting and shutting down the system. The attackers behind these email campaigns used a variety of distribution techniques to deliver the FormBook info-stealer, including PDFs, Office Documents, ZIP, RAR, etc. Some of these files are related to quotation requests.

Impact

  • Credential theft
  • Keystroke logging
  • Data Theft

Indicators of Compromise

MD5

  • 9a7e57e332a2f5ae2b0fabb271d482ac
  • 01e7a173da22d83972bb7df46be43cc6
  • fb9db53135cf8db178f54a1e19f5edd4

SHA-256

  • 85357994a91c91c084eee5b52997631a7fd879f5fd0523bb2b01c9e1c7beb531
  • 72793e11a36bb3d0e87f0f50359f96647d738014a1bd282968fe6ed41102070a
  • b120686883591f5a09157eb0fbfb502d4ee834ca717f9b77ab6bd9d0f85eb353

SHA-1

  • fd8cdd1cc8eee69d018b9c4610b82ae33cc7f0e1
  • a5084153796bccc602c793020a82ddb50817acee
  • b43c70a1dad8594383d5cbf47427b7368c43beef

Remediation

  • Block all threat indicators at your respective controls.
  • Search for IOCs in your environment.
  • Do not download files attached in untrusted emails.