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June 4, 2021
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
- System reboot
- Exposure of sensitive data
Indicators of Compromise
MD5
- 4fe65bc2ea3beb0761c9237b01bcc5e1
- 9e58383115c669f75786d2d1c0dc5b28
- 6d9d41b8c7b2019d513c52822c6b7a91
- dcb0e617ba8b342654625a0d94203e86
SHA-256
- 04745022109b280c8c102e89bdf2e147b5c4022cd550702b5d7572647375bb11
- 2bc313b25d9cabf26747b98eedc7bf0e2ed264375a5951cd2a16c671b7eb0df8
- 67ac52a653d895f47806945a2d84d0450ddc245a9191cf7eec37297649d5b3a6
- 266321f3918aa86a1b7915453a294ca5c36bf2072647b549cdd35f526b3375a3
SHA1
- e431c66333bfd44834e5594b7ec4538562adcc08
- 1236ae35cd32faa87b1991f122fa3acae40dfeda
- d717983bc230b07923da2b8d7f7e1371985556d5
- 2941d4f6be287ef7d328faefac68d459dcbe89b0
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.
- Do not download files attached in untrusted emails