TROJ_SAKUREL.B
Trojan:Win32/Sakurel.A (Microsoft), Trojan.Win32.Sakurel (Ikarus)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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
141,104 bytes
EXE
Yes
15 Feb 2014
Arrival Details
This Trojan 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 Trojan drops the following copies of itself into the affected system and executes them:
- %User Temp%\MicroMedia\MediaCenter.exe
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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 component file(s):
- %User Temp%\MicroMedia\MicroSoftSecurityLogin.ocx
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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 creates the following folders:
- %User Temp%\MicroMedia
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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 Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
MicroMedia = "%User Temp%\MicroMedia\MediaCenter.exe"
HOSTS File Modification
This Trojan adds the following strings to the Windows HOSTS file:
- csg.secure.snecma.fr 217.108.170.94
- ctx.secure.snecma.fr 217.108.170.81
- fdm.secure.snecma.fr 217.108.170.23
- qa.fdm.secure.snecma.fr 217.108.170.27
- qa.indigo.secure.snecma.fr 217.108.170.98
- pi.secure.snecma.fr 217.108.170.96
- qa.secure.snecma.fr 217.108.170.88
- qasd.secure.snecma.fr 217.108.170.87
- sd.secure.snecma.fr 217.108.170.199
- int.tcua.secure.snecma.fr 217.108.170.18
- qa.tcua.secure.snecma.fr 217.108.170.13
- secure.snecma.fr 217.108.170.196
Other Details
This Trojan connects to the following possibly malicious URL:
- http://oa.{BLOCKED}sen.com/photo/qlvgtjvakctkec-197632229.jpg?resid=3685281
- http://oa.{BLOCKED}sen.com/script.asp?imageid=qlvgtjvakctkec-197632229&type=0&resid=3685125&nmsg=up
It deletes the initially executed copy of itself