Severity
Medium
Analysis Summary
HawkEye, primarily an infostealer, has additional capabilities such as bypassing of AV systems and keylogging. A spear-phishing campaign is detected using malicious RTF documents sent via corona-themed emails to distribute the HawkEye keylogger. While most malicious RTF documents use exploits to trigger Object Linking and Embedding (OLE) calls, in this case, the documents use the \objupdate switch. A victim would need to enable macros for the infection process to begin. The embedded OLE objects, five of them in this case, appear to be macro-enabled Excel sheets. PowerShell is used to execute .NET code which downloads and executes the Hawkeye payload.
Impact
- Information Theft
- Credential Theft
- Antivirus Bypass
Indicators of Compromise
MD5
- 83827b8cffe67a789b03e342ed3b1572
SHA-256
- 029910f3fc7c1bc1daa32a70bd334ccc767e7a0d0bdc011881099c9507adb3b6
SHA-1
- e4cd65c315d7c4c37a89767e11f9c52d64753d0f
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment