LokiBot Information Stealing Trojan

A new variant of Loki Bot has been discovered. Loki Bot has been active since at least 2014 and is known for harvesting credentials. Loki embeds itself in PDF files to steal credentials from software on a victim's system.

Threat ID:: CC-1427
Category:: Spyware
Threat Severity:: Medium
Threat Vector:: Download
Published:: 24 May 2017 12:00 AM

Report a cyber attack: call 0300 303 5222 or email [email protected]

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Summary

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows - All versions

Threat details

The new variant of Loki Bot is capable of stealing credentials from over 100 software tools where they are installed on a target system. The malware's updated form uses social engineering tactics to trick users into executing it.

Specifically, the malware poses as a PDF sample that Dropbox was unable to open. If a user clicks the link for the PDF, the threat is unknowingly downloaded onto the host. Loki Bot's author has hidden all APIs and programmed them in such a way that analysis is made much more difficult.

The malware is able to extract credentials from over 100 popular applications including browsers like Mozilla Firefox and Safari, password managers, file manager software and a host of other applications.

Loki Bot achieves persistence by copying itself into '%APPDATA%\subfolder' and renames it as 'citrio.exe' as a VBS (Visual Basic Script) file. This file is added to the Start Menu folder and runs every time the system restarts.

Threat updates

Date	Update
4 Jan 2018	A new variant of Loki has been found. It can harvest data from File Transfer Protocol (FTP) clients (i.e., Filezilla), web browsers such as Firefox, Chrome and Safari, and email clients such as Outlook and Thunderbird. It can also pilfer from IT administration tools like PuTTY, a terminal emulator, system console, and network file transfer application. This new variant of Loki is being distributed via a spam campaign using CVE-2017-11882.

Date

Update

4 Jan 2018

A new variant of Loki has been found. It can harvest data from File Transfer Protocol (FTP) clients (i.e., Filezilla), web browsers such as Firefox, Chrome and Safari, and email clients such as Outlook and Thunderbird. It can also pilfer from IT administration tools like PuTTY, a terminal emulator, system console, and network file transfer application. This new variant of Loki is being distributed via a spam campaign using CVE-2017-11882.

Remediation advice

To prevent and detect a trojan infection, ensure that:

A robust program of

Remediation steps

Type	Step
	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, antivirus and other security products are kept up to date. All day to day computer activities such as email and internet are performed using non-administrative accounts. Strong password policies are in place and password reuse is discouraged. Network, proxy and firewall logs should be monitored for suspicious activity. User accounts accessed from infected machines should be reset on a clean computer.

Type

Step

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, antivirus and other security products are kept up to date.
All day to day computer activities such as email and internet are performed using non-administrative accounts.
Strong password policies are in place and password reuse is discouraged.
Network, proxy and firewall logs should be monitored for suspicious activity.
User accounts accessed from infected machines should be reset on a clean computer.

CVE Vulnerabilities

Status

CVE-2017-11882

Last edited: 17 February 2020 11:34 am