BKDR_IRCNITE.Z
Worm:Win32/Ramnit.A (Microsoft); PWS-Zbot.gen.dn (McAfee); Backdoor.Trojan (Symantec); Trojan-Spy.Win32.SpyEyes.acrx (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan.Generic.4857497 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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
57,344 bytes
EXE
No
16 Jun 2012
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 copies of itself into the affected system:
- %Program Files%\Microsoft\DesktopLayer.exe
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)
It creates the following folders:
- %Program Files%\Microsoft
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)
Dropping Routine
This backdoor drops the following files:
- %Program Files%\Microsoft\px1.tmp
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)
This report is generated via an automated analysis system.
SOLUTION
9.200
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Search and delete this file
- %Program Files%\Microsoft\px1.tmp
Step 3
Search and delete this folder
- %Program Files%\Microsoft
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_IRCNITE.Z. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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