BAT_QHOST.MJSN
Trojan.BAT.Qhost.adi (Kaspersky)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm 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
1,904 bytes
BAT
31 Mar 2016
Arrival Details
This worm 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 worm drops the following copies of itself into the affected system and executes them:
- %Application Data%\love_killer.bat
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It drops the following files:
- %Application Data%\set.bat
- %Start Menu%\Programs\startup\explorer.vbs
- %Application Data%\registery.reg
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other System Modifications
This worm adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
EnableLUA = "0"
Propagation
This worm drops copies of itself in the following drives:
- {Drive C: to V:}\love_killer.bat
HOSTS File Modification
This worm modifies the system's HOSTS files to redirect users once the following Web site(s) are accessed:
- facebook.com
- google.com
- google.co.in
It adds the following strings to the Windows HOSTS file:
- {BLOCKED}.{BLOCKED}.180.72 facebook.com
- {BLOCKED}.{BLOCKED}.180.72 www.facebook.com
- {BLOCKED}.{BLOCKED}.35.230 google.com
- {BLOCKED}.{BLOCKED}.35.230 www.google.com
- {BLOCKED}.{BLOCKED}.98.132 google.co.in
- {BLOCKED}.{BLOCKED}.98.132 www.google.co.in