Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Attacks/Breaches

12/2/2015
12:15 PM
Connect Directly
Twitter
RSS
E-Mail
50%
50%

CryptoWall 4.0 Spreading Via Angler Drive-By Download Campaign

Sweet-talking ransomware making rounds in attacks originating from Ukraine-based hosts.

CryptoWall 4.0, the newest version of the CryptoWall ransomware, is being packed into the Angler exploit kit and spreading through a new drive-by download campaign, according to researchers at Heimdal Security

Heimdal first discovered CryptoWall 4.0 in the wild just one month ago. It's stealthier than earlier versions of the ransomware -- it encrypts not just files, but filenames too.

It also uses a strikingly different ransom message. Instead of demanding payment and trying to frighten the user, the new variant tries to convince a user to buy a $700 "software package" and delivers veiled threats within a message that begins "Congratulations! You have become a part of large community CryptoWall!" 

The new attack campaign uses what Heimdal calls a "stack of drive-by campaigns," that hit the victim with multiple payloads, including the Pony information stealer, the Angler exploit kit, and ultimately, CryptoWall. 

The victim is first hit the the Pony information stealer, which scrapes all the usernames and passwords it can find off the victim's system and sends them back to the attackers command-and-control server. Heimdal researchers state that the purpose is to find credentials for Web servers or content management systems and use them to inject malicious scripts into new sites, thus further broadening the attack campaign.

The victim is then redirected to another site that drops Angler, which scans the system for vulnerabilities and feeds it CryptoWall 4.0.

Heimdal has found over 200 new domains being used by attackers in the past 24 hours alone. The campaign originates from a hosting environment in the Ukraine, and has thusfar hit websites in Denmark particularly hard -- over 100 sites there have been injected with malware.

Sara Peters is Senior Editor at Dark Reading and formerly the editor-in-chief of Enterprise Efficiency. Prior that she was senior editor for the Computer Security Institute, writing and speaking about virtualization, identity management, cybersecurity law, and a myriad ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
Data Privacy Protections for the Most Vulnerable -- Children
Dimitri Sirota, Founder & CEO of BigID,  10/17/2019
Sodinokibi Ransomware: Where Attackers' Money Goes
Kelly Sheridan, Staff Editor, Dark Reading,  10/15/2019
Tor Weaponized to Steal Bitcoin
Dark Reading Staff 10/18/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
7 Threats & Disruptive Forces Changing the Face of Cybersecurity
This Dark Reading Tech Digest gives an in-depth look at the biggest emerging threats and disruptive forces that are changing the face of cybersecurity today.
Flash Poll
2019 Online Malware and Threats
2019 Online Malware and Threats
As cyberattacks become more frequent and more sophisticated, enterprise security teams are under unprecedented pressure to respond. Is your organization ready?
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-8369
PUBLISHED: 2019-10-21
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Notes: none.
CVE-2019-18224
PUBLISHED: 2019-10-21
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
CVE-2019-16985
PUBLISHED: 2019-10-21
In FusionPBX up to v4.5.7, the file app\xml_cdr\xml_cdr_delete.php uses an unsanitized "rec" variable coming from the URL, which is base64 decoded and allows deletion of any file of the system.
CVE-2019-16986
PUBLISHED: 2019-10-21
In FusionPBX up to v4.5.7, the file resources\download.php uses an unsanitized "f" variable coming from the URL, which takes any pathname and allows a download of it. (resources\secure_download.php is also affected.)
CVE-2019-16987
PUBLISHED: 2019-10-21
In FusionPBX up to v4.5.7, the file app\contacts\contact_import.php uses an unsanitized "query_string" variable coming from the URL, which is reflected in HTML, leading to XSS.