Analysis by: Michelle Morales
ALIASES:

Trojan:Win32/Kovter.C (Microsoft), a variant of Win32/Kryptik.CNOB (ESET)

 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: 269,360 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 09 Feb 2015

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\
Internet Explorer\Main\FeatureControl

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_AJAX_CONNECTIONEVENTS

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_BROWSER_EMULATION

It adds the following registry entries:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_AJAX_CONNECTIONEVENTS
svchost.exe = "1"

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_BROWSER_EMULATION
explorer.exe = "0"

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_BROWSER_EMULATION
svchost.exe = "0"

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}e.pw/form2.php