TSPY_DYRE.YYYP
Windows
![](/vinfo/imgFiles/legend.jpg)
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.
It deletes the initially executed copy of itself.
TECHNICAL DETAILS
540,672 bytes
EXE
Yes
05 Feb 2015
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 drops the following files depending on the platform/operating system of the affected computer:
- %Windows%\{Random Filename}.exe (for Windows XP and Below)
- %AppDataLocal%\{Random Filename}.exe (for Windows Vista and Above)
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local 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.)
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run (for Windows Vista and Above)
(Default) = "%AppDataLocal%\{Random Filename}.exe"
It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\googleupdate (for Windows XP and Below)
DisplayName = "Google Update Service"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\googleupdate (for Windows XP and Below)
ImagePath = "%Windows%\{Random Filename}.exe"
Other Details
This spyware connects to the following possibly malicious URL:
- {BLOCKED}.{BLOCKED}.206.253
- {BLOCKED}.{BLOCKED}.214.158
- {BLOCKED}.{BLOCKED}.242.226
- {BLOCKED}.{BLOCKED}.235.120
- {BLOCKED}.{BLOCKED}.148.193
- {BLOCKED}.{BLOCKED}.66.72
- {BLOCKED}.{BLOCKED}.149.32
- {BLOCKED}.{BLOCKED}.202.238
- nhgyzrn2p2gejk57wveao5kxa7b3nhtc4saoonjpsy65mapycaua.{BLOCKED}2.i2p
It deletes the initially executed copy of itself