TROJ_ARTIEF.KJC
Exploit.OLE2.Toolbar.a(Kaspersky), LooksLike.OLE.Malware.a (v)(Sunbelt), MSWord/Toolbar.A!exploit(Fortinet)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Spammed via email
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.
TECHNICAL DETAILS
410,792 bytes
DOC, RTF
No
19 May 2014
Drops files
Arrival Details
This Trojan arrives as an attachment to the following email messages spammed by other malware/grayware or malicious users:
Installation
This Trojan drops and executes the following files:
- %User Temp%\SVCH0ST.exe - detected as BKDR_SACTO.FAM
It drops the following non-malicious file:
- %User Temp%\Word.doc
(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, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
Dropping Routine
This Trojan takes advantage of the following software vulnerabilities to drop malicious files:
It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.
Other Details
More information on this vulnerability can be found below:
NOTES:
This Trojan drops the following shortcut pointing to its dropped file (BKDR_SACTO.FAM) in the User Startup folder to enable its automatic execution at every system startup:
- %User Startup%\msn.lnk
This Trojan opens its dropped non-malicious .DOC file %User Temp%\Word.doc as a decoy to trick user that they are opening a legitimate document.
SOLUTION
9.700
10.804.04
19 May 2014
10.805.00
19 May 2014
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Remove malware/grayware files that dropped/downloaded TROJ_ARTIEF.KJC. (Note: Please skip this step if the threats listed below have already been removed.)
- %User Temp%\SVCH0ST.exe - BKDR_SACTO.FAM
Step 3
Search and delete these files
- %User Temp%\Word.doc
- %User Startup%\msn.lnk
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_ARTIEF.KJC. 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.
Step 5
Download and apply these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.
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