TSPY_ZBOT.YUYAEP
PWS:Win32/Zbot (Microsoft); Trojan-Spy.Win32.Zbot.vpma (Kaspersky); Trojan[Spy]/Win32.Zbot (Antiy-AVL)
Windows
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware 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 spyware 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 spyware adds the following folders:
- %Application Data%\{random folder name 1}
- %Application Data%\{random folder name 2}
(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 copies of itself into the affected system and executes them:
- %Application Data%\{random folder name 1}\{random filename 1}.exe
(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%\Microsoft\Address Book\{computer name}.wab
- %Application Data%\{random folder name 2}\{random filename 2}.{random extension}
(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.)
Other System Modifications
This spyware adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4\WAB File Name
@ = "%Application Data%\Microsoft\Address Book\{computer name}.wab"
HKEY_CURRENT_USER\Software\Microsoft\
Pyargy
{random registry value} = "{hex values}"
HKEY_CURRENT_USER\Software\Microsoft\
Pyargy
{random registry value} = "{hex values}"
Other Details
This spyware connects to the following possibly malicious URL:
- {BLOCKED}osh.com/courage/SHIPPING/images/icon/config.jpg