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 
• Clear browser cookies 
• System Reboot 
• Exposure of sensitive data

Indicators of Compromise

SHA-256

• baaffa86bc9709895ea809bbfb35013a15b8fdb769604d70f780b632bd64060e
• 25bc61f120e240f26653f0f5c804f9b1590ba66d7f8ae6eea5c21ee4bfeb3689
• defa7a163721a798851fb016beb4080379d63aab1941ee27b78d10b714ddc01a
• 3bb5008fd149c0f0bcf0aa973905386f49b672316a04a9c5ac6b374a8e77cd73

Remediation

• Block all threat indicators at your respective controls.
• Search for IOCs in your environment.