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Rewterz Threat Alert – Oski Data Stealer Malware – Active IOCs

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

  • 2df2bb4ba1e6580fa4368f8b2cf681fe

SHA-256

  • 24135e78ecf7c7e30984c0f38d381f528c2400f4b7f4a05d5c37bdcf9365ced1

SHA-1

  • f47e87ba69f94bf626c27bde2708fd2686df203b

Remediation

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