Rewterz Threat Advisory – CVE-2021-41379 – New Windows Zero Day Exploited for Privilege Escalation
November 23, 2021Rewterz Threat Alert – Ursnif Banking Trojan – Active IOCs
November 23, 2021Severity
High
Analysis Summary
TrickBot is a banking Trojan that targets sensitive information and acts as a dropper for other malware. Trickbot is usually spread via malicious malspam campaigns. These campaigns send unsolicited emails that direct users to download malware from malicious websites or trick the user into opening malware through an attachment. TrickBot is also dropped as a secondary payload by other malware. The malspam campaigns that use Trickbot use branding familiar to the recipient, such as invoices from accounting and financial firms. The emails typically include an attachment, such as a Microsoft Word or Excel document. The opened attachment will prompt the user to enable macros, which executes a VBScript to run a PowerShell script to download the malware.
Impact
- Credential Theft
- Financial loss
- Exposure of sensitive data
Indicators of Compromise
MD5
- d183fbc01115a29d762ca8cbc7004cd2
- 4610eeac2606fb87588f945a68575a6b
- 845a8cdc7b1a09479fc11a10cba719fd
- c209442e0b4def3db738ffe2844bab2a
SHA-256
- 2a039fd90e9150cf1caacb66326d0a3aae6f050c6d0a20e0adbaa2a2e3025450
- 6974cc5b9137d9525264eb02cc05f3c65af5442884a1f2384335cc78805854a3
- e177d899ad1fe93863e30a44fe7adcdbe6cbde5594c9ffe63115592fb2a39de0
- d567d76acca155164b8ec34248ea53d9af8564f7122e6437079ef65b27e622c1
SHA-1
- 1feb0b823f43dea2c159edcde5fb980479ae4510
- bfe3f6d3fb86a6538b3364e966abafb647eed021
- 35937ae2b484e06c15638002ed0a70674216e330
- a09d8878133ea984a2d300eb8e913b206ab66b7e
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment