Osiris Banking Trojan Threat Intelligence Advisory

CloudSEK threat intelligence advisory on Osiris banking trojan, the latest variant of Kronos malware, targets banking credentials of victims.
Updated on
April 19, 2023
Published on
February 16, 2021
Subscribe to the latest industry news, threats and resources.
Advisory Type
Malware Intelligence
Malware Name
Osiris, Kronos
Malware Type
Banking Trojan
Target System
Affected Industry
BFSI, Business Services, Technology, Retail, Healthcare, Higher Education, Manufacturing, 
Affected Regions
Germany, US, Korea, Japan, Poland

Executive Summary

Osiris, a banking trojan, is the latest known variant of the Kronos malware. Discovered in June 2014, the Kronos malware did the rounds on a Russian dark web forum, only to stay dormant for the next couple of years. In July 2018, Kronos resurfaced dubbed as Osiris, in attack campaigns targeting Germany, Japan, and Poland. In 2020 as well another threat actor was found selling the licence to Osiris. The most recent campaign that involved Osiris, targeted customers of the German manufacturing industry. This campaign redirected its victims to questionable websites that triggered the multi-stage delivery of the Osiris trojan.    [caption id="attachment_9518" align="alignnone" width="1024"]Threat actor sells Osiris on a russian forum in 2018 Threat actor sells Osiris on a Russian forum in 2018[/caption]   [caption id="attachment_9519" align="alignnone" width="1024"]Threat actor sells Osiris license in 2020 Threat actor sells Osiris license in 2020[/caption]  

Technical Analysis

This malware was designed to steal banking credentials of infected victims. Its propagation has varied since its first appearance. Now Osiris is delivered via:
  • Spear-phishing email campaigns, where the malicious documents contain macros responsible for downloading the Osiris trojan.
  • Compromised website that hosts malicious fileless malware, responsible for downloading the trojan.
The main feature of Osiris trojan is its encrypted Tor-based communication with the Command and Control server (C2), which allows it to prevent detection. The latest version of the malware had new, additional features such as:
  • Support Windows versions Vista / 7 / 8 / 8.1 / 10
  • Tor Connection
  • Formgrabber POST and GET requests (it will grab everything) fully supported on Internet Explorer, FireFox, Chrome, Opera and Edge all latest versions.
  • WebInjections Support (Zeus style webinjects with automatic Update of injections, supported on Internet Explorer, FireFox, Chrome and Edge all latest versions).
  • Keylogger
  • CC grabber
  • Log Parser
  • Download & Execute
  • Bot Update
  • Browser Password Recovery works on Firefox and Chrome
  • SMTP Outlook 2007,2010,2013,2016 Password Recovery
  • AntVMware, AntiSandbox, AntiDebug Support
  • Normal VNC
  • Socks5 Support
  • Hidden VNC (HVNC)
  • Hidden Teamviewer + File Manager of Teamviewer fully Supported


Technical Impact
  • Disrupting operating system processes, as the Osiris trojan is injected into one of the running processes on the infected machine.
  • Data leak
  • Anonymous connection with the Command and Control server of the attacker
Business Impact
  • Privacy violation
  • Financial data leak and loss 
  • Brand and reputation loss


  • Use up-to-date browsers and plugins, and keep updated with latest patches.
  • Apply web-based component restrictions such blocking automatic attachment download, blocking javascript, and restricting browser extensions.
  • Use Antivirus/ Antimalware softwares on the system.
  • Use Network Intrusion Prevention tools with latest signatures.
  • Spread awareness through regular training programs focused on phishing attacks.

Tactics, Techniques and Procedures

Initial Access
T1189 Drive-by Compromise
T1566.001 Spear Phishing Attachment
Privilege Escalation
T1055.001 Dynamic-link Library Injection
T1055.012 Process Hollowing
Defense Evasion
T1112 Modify Registry
T1497 Virtualization/Sandbox Evasion
T1497 Virtualization/Sandbox Evasion
T1056.001 Keylogging
T1185 Man in the Browser
Command and Control
T1573 Encrypted Channel
T1090.003 Multi-hop Proxy

Indicators of Compromise


Get Global Threat Intelligence on Real Time

Protect your business from cyber threats with real-time global threat intelligence data.. 30-day free and No Commitment Trial.
Schedule a Demo
Real time Threat Intelligence Data
More information and context about Underground Chatter
On-Demand Research Services
Dashboard mockup
Global Threat Intelligence Feed

Protect and proceed with Actionable Intelligence

The Global Cyber Threat Intelligence Feed is an innovative platform that gathers information from various sources to help businesses and organizations stay ahead of potential cyber-attacks. This feed provides real-time updates on cyber threats, including malware, phishing scams, and other forms of cybercrime.
Trusted by 400+ Top organisations