TROJ_BUBLIK.KA
Trojan-Dropper.Win32.Dorifel.zhc (Kasperksy), VirTool:Win32/DelfInject (Microsoft)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
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
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.
Installation
This Trojan adds the following folders:
- {All User's Profile}\{random}
- {All User's Profile}\{random}\{random 2}
- {All User's Profile}\{random}\{random 2}\{random 3}
- {All User's Profile}\{random}\{random 2}\{random 3}\{random 4}
It drops the following files:
- {All User's Profile}\{random filename}
It drops the following copies of itself into the affected system:
- {All User's Profile}\{random}\{random 2}\{random 3}\{random 4}\{random filename}.exe
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = "{All User's Profile}\{random}\{random 2}\{random 3}\{random 4}\{random filename}.exe"
Other System Modifications
This Trojan adds the following registry entries as part of its installation routine:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion
Explore = "BD74A42C-7664A42A"
Other Details
This Trojan connects to the following possibly malicious URL:
- {BLOCKED}c14.blogspot.com.br
- {BLOCKED}suszas.hu
- {BLOCKED}res.com.br