February 17, 2025
Proactive Defense: The Importance of Incident Response Planning in Cybersecurity
Rewterz Threat Advisory –Multiple Dell EMC NetWorker Security Vulnerabilities
August 9, 2021Rewterz Threat Alert – Ryuk Ransomware – Active IOCs
August 9, 2021Rewterz Threat Advisory –Multiple Dell EMC NetWorker Security Vulnerabilities
August 9, 2021Rewterz Threat Alert – Ryuk Ransomware – Active IOCs
August 9, 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
- Data Theft
Indicators of Compromise
MD5
- e3f8392aa03280bb36a3dc058e44fca5
- 247e2ce013cbda5db987f42355048389
- 4f083daca63cd2bcb2956188a715e158
- 9426dc9b8f72f909b3942db6eb186f5d
- 1a57158743374e0921da27736bd82f9f
SHA-256
- cc0e5224224cd1137d4cdff798462d06a7e5e39e97858aac2ecc3c27b5c30b42
- 778a433f0c438f5f4ad261e0c14d350e37f10d8fe4ca7794da84052aa114f94c
- cc919489faa7e0533fde063de20dd1cc1d4116b54708e08ea37e34a4e6d2672a
- 7c071823d86f7f37eb038add1e274db23c722612d74602e11496d0b4e312103a
- f3238da427c80f842f5b4a789726005ac06157181d80a32105aa639b325d0330
SHA-1
- 2f7efa75f8c1d791007a006bd820a2f735b7fb22
- 1709f83e2066fbbfc9cac502807cb733ebafed6d
- 757474b07107a240c5eba7e0b5a6f3259c2155ba
- 7c95adf813aca090d9df767830885e1af8fb5d7e
- aab70a28915715dad73ce093aa0b8cf7a558a860
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.