Severity
High
Analysis Summary
An emergent and effective data-harvesting tool dubbed Oski is proliferating in North America and China, stealing online account credentials, credit card numbers, crypto wallet accounts, and more. The malware is still in its developing phase but packs a punch with its capabilities. Oski C2’s dashboard revealed that Oski’s theft tactics involve extracting credentials using man-in-the-browser (MitB) attacks by hooking the browser processes using DLL injection, It also extracts credentials from the registry, passwords from the browser SQLite database, and stored session cookies of all stripes, including crypto-wallet cookies from Bitcoin Core, Ethereum, Monero, Litecoin, and others.
Impact
- Credential theft
- Unauthorized access
Indicators of Compromise
MD5
- e2e01c7a8e323e117cfc9c4cdf0ad1c2
SHA-256
- c40bf8fd1a3bc472287536b81fd9fdde8fa2046ace7dcb787f464e6b547a4f1b
- af66b7e1963f8faeb154343e2936681f06107203a20fbdfbd0263d9d5b09eced
- 926b147d9e72e70db67c73e8f43d77c6fa8a30a223502a93838ac7ce16af2205
- e8b4e90cb7a9233231088d027c2c090aafc143c77e1f46d34d6b206c2c797419
SHA-1
- ea718bc482d968f9db9577b8d9edb08e4f24abbd
Remediation
- Block all threat indicators at your respective controls.
- Always be suspicious about emails sent by unknown senders.
- Never click on the links/attachments sent by unknown senders.