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TROJ_ROVNIX.YPOK

March 07, 2016
 Analysis by: Pearl Charlaine Espejo
 ALIASES:

Trojan.Rovnix (Malwarebytes); TrojanDownloader:Win32/Rovnix.A (Microsoft); Trojan-Spy.Win32.Carberp.aqaw (Kaspersky); Win32/Rovnix.AF (ESET-NOD32)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

80,384 bytes

File Type:

DLL

Initial Samples Received Date:

18 Feb 2016

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}\
PLUGIN

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Installer\Products\B{Volume Serial Number}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Installer\Products\B{Volume Serial Number}\
PLUGIN

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}
SH1 = "{hex values"}

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}
SH2 = "{hex values"}

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}
SH3 = "{hex values"}

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}
RR = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Installer\Products\B{Volume Serial Number}\
PLUGIN
{random} = "{hex values"}

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}all.com/login.asp
  • http://{BLOCKED}all.com/images/transparent.gif
  • http://{BLOCKED}all.com/images/pixel.gif
  • http://{BLOCKED}all.com/download/{random}.zip
  • http://{BLOCKED}all.com/account.asp?qu={value}&crc32={value}
  • http://{BLOCKED}all.com/images/logout.gif

NOTES:
It connects to the following NTP server:

  • 0.de.pool.ntp.org
  • de.pool.ntp.org
  • ntp1.stratum2.ru

  SOLUTION

Minimum Scan Engine:

9.800

NOTES:

Trend customers:

    Keep your pattern and scan engine files updated. Trend Micro antivirus software can clean or remove most types of computer threats. Malware, though, such as Trojans, scripts, overwriting viruses and joke programs which are identified as uncleanable, should simply be deleted.

All Internet users:

  • Use HouseCall - the Trend Micro online threat scanner to check for malware that may already be on your PC.
  • Catch malware/grayware before they affect your PC or network. Secure your Web world with Trend Micro products that offer the best anti-threat and content security solutions for home users, corporate users, and ISPs. Go here for more information on Trend Micro products that fit your needs.


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