BKDR_RUSKILL.JJ
Trojan:Win32/Dishigy.gen!A (Microsoft)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor 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
204,800 bytes
EXE
28 Jun 2011
Arrival Details
This backdoor 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 backdoor drops the following files:
- %WINDOWS%\syskey2i.drv
- %System%\system32\svdhalp.exe.ini
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It drops the following copies of itself into the affected system:
- %System%\svdhalp.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Autostart Technique
This backdoor modifies the following registry entries to ensure it automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Shell = "explorer.exe, svdhalp.exe"
(Note: The default value data of the said registry entry is explorer.exe.)
Other Details
This backdoor connects to the following possibly malicious URL:
- http://{BLOCKED}a.net/f2/m_d.php