Severity
High
Analysis Summary
Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 when its source code was published on Github and since then the moderators have always tweaked some changes to make use of their arsenal according to their gains. Mainly attacking banks and other financial institutions. As banking security has hardened and more customers have used mobile banking apps, attackers have switched to using Trojans such as Ursnif to steal other types of data, including email configurations, as well as credentials and passwords stored in the web browsers and even digital wallets. Threat actors use different techniques to make a victim fall into their trap. In many cases, a phishing email is sent to a victim that contains a malicious attachment – typically an Excel spreadsheet. If the victim clicks on an “Enable Content” button, they will not see the spreadsheet; rather an embedded macro code, which contains PowerShell commands and that’s how the infection begins to unfold.
Impact
- Information Theft
- Financial Loss
- Exposure of Sensitive Information
Indicators of Compromise
MD5
- 520636dbbdc33d8dbdf1b14f043b46f8
- fc3bfcbea189128d395bd97fd0a24433
SHA-256
- bd8aa280646a2b601ccbd5cec125d51646624d34005eb7db56da6b70fda821cb
- 6ad6b32328db40db59bbb1a37ab32024ce2b69173fdbd12167d314ef86e24ed2
SHA-1
- 20eec5615c4ecca3603f889bccf975c855fa7a07
- 281d8dc9f545771cf98f8712b12170a52a0a08c6
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.