Generic.dx!5F4C4C8C

Content

Generic.dx!5F4C4C8C

Type: Trojan
SubType: -
Discovery Date: 09/08/2008
Length: 240128
Minimum DAT: 5378 (09/05/2008)
Updated DAT: 5378 (09/05/2008)
Minimum Engine: 5.3.00
Description Added: 09/08/2008
Description Modified: 09/08/2008 2:16 AM (PT)

Risk Assessment

Corporate User: Low
Home User: Low

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Characteristics

File Property	Property Value
FileName	ren.exe
McAfee Detection	Generic.dx
Length	240,128 bytes
CRC	5F4C4C8C
MD5	C796482CCFE04D1F9A49B7F9A0FA6373
SHA1	5C092F0FAFF9BC744FE9F61358BCF650C4DEA019

Other Common Detection Aliases

Company Name	Detection Name
ahnlab	Win-Trojan/Hider.234496
avast	Win32:Trojan-gen {Other}
AVG (GriSoft)	Generic8.GHY
Avira	TR/Hider.I
BitDefender	Trojan.Hider.I
Dr.Web	Trojan.Hidn
Eset	Win32/Hider.I
F-Prot	W32/Backdoor.BVFG
Kaspersky	Trojan.Win32.Hider.i
microsoft	trojan:win32/hider
norman	w32/malware.ptu
panda	Trj/Agent.ECB
rising	Trojan.Hider.ve
Sophos	Troj/Hider-O
Symantec	W32.SillyFDC
Trend Micro	TROJ_HIDER.I
vba32	Trojan.Win32.Hider.i
V-Buster	Trojan.Hider.G
Vet (Computer Associates)	Win32/HideIt.A

Avert® Labs has observed the following system activities:

Activity	Risk Level
Writes executable in the windows folder	Low
Performs a shell execute of downloaded or existing files	Informational

Other detections that have been observed.

FileName	McAfee Supported
%WINDIR%\system32\isass.exe	Generic.dx

System Changes

These are general defaults for typical path variables. (Although they may differ, these examples are common.):
%WinDir% = \WINDOWS (Windows 9x/ME/XP/Vista), \WINNT (Windows NT/2000)
%SystemDir% = \WINDOWS\SYSTEM (Windows 98/ME), \WINDOWS\SYSTEM32 (Windows XP/Vista), \WINNT\SYSTEM32 (Windows NT/2000)
%ProgramFiles% = \Program Files

The following files have been added to the system:

%WINDIR%\system32\exe2.tmp

%WINDIR%\system32\exe3.tmp

%WINDIR%\system32\isass.exe

The following registry elements have been changed:

hkey_local_machine\software\classes\exefile\

(default) = file folder

hkey_local_machine\software\microsoft\windows\currentversion\explorer\advanced\folder\hidefileext\

uncheckedvalue = 1

hkey_local_machine\software\microsoft\windows\currentversion\explorer\advanced\folder\superhidden\

uncheckedvalue = 0

hkey_local_machine\system\controlset001\control\servicecurrent\

(default) = 9

hkey_local_machine\system\currentcontrolset\enum\root\legacy_csnetmanagerxp\0000\control\

activeservice = csnetmanagerxp

hkey_users\s-1-5-21-1202660629-602609370-839522115-500\software\microsoft\windows\currentversion\explorer\advanced\

hidefileext = 1
showsuperhidden = 0

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

Removal

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

N/A

All Information

Overview -

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.