TROJ_ARTIEF.ZTAJ-DAM
Exploit:Win32/CVE-2012-0158 (Microsoft), Exploit-CVE2012-0158!rtf (McAfee), Bloodhound.Exploit.457 (Symantec)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
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 files:
- MSI7188L.dll
Autostart Technique
This Trojan registers its dropped component as a system service to ensure its automatic execution at every system startup. It does this by creating the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\AudioClr\Parameters
ServiceDll = "MSI7188L.dll"
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Audioclr
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Audioclr\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Audioclr\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Audioclr\Enum
Other Details
This Trojan connects to the following possibly malicious URL:
- followsecurity.{BLOCKED}d.com
- webmail.{BLOCKED}b.net
SOLUTION
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
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AudioClr\Parameters
- ServiceDll = "MSI7188L.dll"
- ServiceDll = "MSI7188L.dll"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- Audioclr = ""
- Audioclr = ""
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Audioclr
- Parameters = ""
- Parameters = ""
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Audioclr
- Security = ""
- Security = ""
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Audioclr
- Enum = ""
- Enum = ""
Step 3
Search and delete these files
- MSI7188L.dll
Step 4
Scan your computer with your Trend Micro product to clean files detected as TROJ_ARTIEF.ZTAJ-DAM. 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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