TROJ_ARTIEF
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This description is based on a compiled analysis of several variants of TROJ_ARTIEF. Note that specific data such as file names and registry values may vary for each variant.
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It may be unknowingly downloaded by a user while visiting malicious websites.
It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.
TECHNICAL DETAILS
Varies
DOC, RTF
19 Sep 2007
Drops files
Arrival Details
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
It may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This Trojan drops the following non-malicious file:
- %User Temp%\{random}.doc - opened by the malware to trick users into thinking that the document is non-malicious
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)
Dropping Routine
This Trojan drops the following files:
- %User Temp%\{random}.exe
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)
It takes advantage of the following software vulnerabilities to drop malicious files:
- (MS10-087) Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (2423930)
- RTF Stack Buffer Overflow Vulnerability (CVE-2010-3333)
It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.
NOTES:
This description is based on a compiled analysis of several variants of TROJ_ARTIEF. Note that specific data such as file names and registry values may vary for each variant.
SOLUTION
9.200
4.730.01
19 Sep 2007
8.493.00
13 Oct 2011
Trend customers:
Keep your pattern and scan engine files updated. Trend Micro antivirus software can clean or remove most types of computer threats. Malware, though, such as Trojans, scripts, overwriting viruses and joke programs which are identified as uncleanable, should simply be deleted.
All Internet users:
- Use HouseCall - the Trend Micro online threat scanner to check for malware that may already be on your PC.
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