TSPY_DYRE.AATZ
Infostealer.Dyranges (Symantec), PWS:Win32/Dyzap (Microsoft), Trojan.Win32.Staser.artq (Kaspersky)
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
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 copies of itself into the affected system:
- %Windows%\{Random Filename}.exe - (Windows XP)
- %AppDataLocal%\{Random Filename}.exe - (Windows Vista and Higher)
(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 Higher)
(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)
DisplayName = Google Update Service
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\googleupdate - (For Windows XP)
ImagePath = "%Windows%\{Random Filename}.exe"
Other Details
This spyware connects to the following possibly malicious URL:
- http://{BLOCKED}8.{BLOCKED}5.210.181:443
- http://{BLOCKED}4.{BLOCKED}3.61.172:4443
- http://{BLOCKED}4.{BLOCKED}3.195.148:4443
- http://{BLOCKED}4.{BLOCKED}3.25.93:443
- http://{BLOCKED}4.{BLOCKED}3.61.172:443
- http://{BLOCKED}5.{BLOCKED}1.199.37:443
- http://{BLOCKED}8.{BLOCKED}5.210.181:4443
- http://{BLOCKED}4.{BLOCKED}.25.93:4443
- http://{BLOCKED}5.{BLOCKED}1.199.37:4443
- http://{BLOCKED}4.{BLOCKED}0.19.202:443
- http://{BLOCKED}9.{BLOCKED}0.104.136:443
- http://{BLOCKED}4.{BLOCKED}3.25.93:443
It deletes the initially executed copy of itself