TROJ_DROPPR.PIE
PWS:Win32/OnLineGames.MY(Microsoft),Trojan.Win32.Patched.ox(Kaspersky),Dropped:Generic.Malware.P.84116CC4(Bit Defender)
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: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes registry entries, causing some applications and programs to not function properly.
It deletes itself after execution.
TECHNICAL DETAILS
270,336 bytes
EXE
No
09 Oct 2013
Drops files
Arrival Details
This Trojan 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 Trojan drops and executes the following files:
- %System%\drivers\xpV3001.sys
- %System%\drivers\420a0a1f.sys
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
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\neverdeath
DisplayName = "neverdeath"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\neverdeath
ErrorControl = "1"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\neverdeath
ImagePath = "\??\%System%\drivers\xpV3001.sys"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\neverdeath
Start = "2"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\neverdeath
Type = "1"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\neverdeath
Security = "{hex values}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\420a0a1f
DisplayName = "420a0a1f"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\420a0a1f
ErrorControl = "1"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\420a0a1f
ImagePath = "\??\%System%\drivers\420a0a1f.sys"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\420a0a1f
Start = "2"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\420a0a1f
Type = "1"
Other System Modifications
This Trojan deletes the following files:
- %System%\Drivers\EstRtw.sys
- %System%\dia3.ini
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\neverdeath
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\420a0a1f
It deletes the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
AhnLab V3Lite Tray Process = "{system value}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
ALYac = "{system value}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
AVP = "{system value}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\V3 Lite Service
ImagePath = "{system value}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ALYac_UpdSrv
ImagePath = "{system value}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ALYac_RTSrv
ImagePath = "{system value}"
Other Details
This Trojan deletes itself after execution.
NOTES:
It will terminate windows with the following string in its title:
- AhnLab
- III
- Tray Application
- V3 Lite
- archeage
- cabal2
- lineage windows client
- maplestory
It deletes the service registry for the following:
- v3engine
- ascrts_V3LITE30
- ascrts_V3LITE{value}
It terminates the following processes:
- NVCAGENT.NPC
It deletes values in the following registry key with the data contains the string “{%User Temp%}”:
- HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
It creates a copy the following system files:
- %System%\ws2help.dll
- %System%\ws2helpXP.dll %System%\ws2help.dll
- %System%\ws2help.dll.{random characters}.tmp
- %System%\ws2help.dll
- %System%\dllcache\ws2help.dll
It replaces the following system file(s):
- %System%\ws2help.dll - detected as Mal_OLGM-42
SOLUTION
9.300
10.334.01
11 Oct 2013
10.335.00
12 Oct 2013
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 dropped/downloaded by TROJ_DROPPR.PIE
- Mal_OLGM-42
Step 3
Delete this registry key
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
- neverdeath
- neverdeath
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- 420a0a1f
- 420a0a1f
Step 4
Search and delete these files
- %System%\drivers\xpV3001.sys
- %System%\drivers\420a0a1f.sys
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_DROPPR.PIE. 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 6
Restore these deleted registry keys/values from backup
*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- AhnLab V3Lite Tray Process = "{system value}"
- AhnLab V3Lite Tray Process = "{system value}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- ALYac = "{system value}"
- ALYac = "{system value}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- AVP = "{system value}"
- AVP = "{system value}"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\V3 Lite Service
- ImagePath = "{system value}"
- ImagePath = "{system value}"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ALYac_UpdSrv
- ImagePath = "{system value}"
- ImagePath = "{system value}"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ALYac_RTSrv
- ImagePath = "{system value}"
- ImagePath = "{system value}"
Step 7
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
NOTES:
If a file is detected as Mal_OLGM-42, rename any of the following files to %System%\ws2help.dll:
- %System%\ws2helpXP.dll
- %System%\ws2help.dll.{random characters}.tmp
- %System%\dllcache\ws2help.dll
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