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CStealer Trojan

CStealer is a newly observed information-stealing trojan targeting the Google Chrome web browser.

Threat ID:
CC-3305
Category:
Trojan
Threat Severity:
Low
Threat Vector:
Published:
5 December 2019 12:00 AM
Report a cyber attack: call 0300 303 5222 or email [email protected]

Summary

CStealer is a newly observed information-stealing trojan targeting the Google Chrome web browser.

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

  • Microsoft Windows - All versions

Threat details

At the time of publication, it is unclear how CStealer is delivered, although there are unconfirmed reports indicating it may be distributed via spam campaigns.

Once delivered, CStealer will attempt to extract account credentials from Chrome's built-in password manager. These are then sent to a MongoDB database for retrieval by CStealer's operators.

Remediation steps

Type Step

To prevent and detect a trojan infection, ensure that:

  • A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails.
  • All operating systems, anti-virus and other security products are kept up-to-date.
  • Regular anti-virus and security scans are performed on your organisation’s estate.
  • All day-to-day computer activities such as email and internet are performed using non-administrative accounts.
  • Strong password policies are in place.
  • Network, proxy and firewall logs should be monitored for suspicious activity.
  • User accounts accessed from affected devices should be reset on a clean computer.
  • Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Indicators of compromise

Main indicators

SHA256 File Hashes

  • 00a1237e8faa646219744517b24cb4c8ebdbaa10d62e2b56fc25dffca832583c

Last edited: 29 June 2021 11:57 am