TROJ_REDOSD.SMQ
TrojanDropper:Win32/Zegost.C (Microsoft); Generic Dropper!dra (McAfee); Adware.Lop (Symantec); Trojan.Win32.Generic!BT (Sunbelt); Backdoor:W32/Bjlog.D (FSecure)
Windows 2000, Windows, XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
196,608 bytes
EXE
No
05 Nov 2011
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 the following copies of itself into the affected system:
- %System Root%\{random}
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
It drops the following file(s)/component(s):
- %Application Data%\Systems\ACDSee\Igebo.ddf%SESSIONNAME%\fupmj.cc3
- %System%\{random}.rdb
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It creates the following folders:
- %Application Data%\Systems
- %Application Data%\Systems\ACDSee
- %Application Data%\Systems\ACDSee\Igebo.ddf%SESSIONNAME%
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
Autostart Technique
This Trojan registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Comhidserv70
ImagePath = "%System%\svchost.exe -k netsvcs"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Comhidserv70\Parameters
serviceDlL = "%Application Data%\Systems\ACDSee\Igebo.ddf%SESSIONNAME%\fupmj.cc3"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_HIDSERV\
0000
Service = "HidServ"
Other System Modifications
This Trojan adds the following registry keys as part of its installation routine:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Comhidserv70
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_HIDSERV
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\HidServ
SOLUTION
9.200
8.112.04
22 Apr 2011
8.113.00
23 Apr 2011
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 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\SOFTWARE\Microsoft
- Comhidserv70
- Comhidserv70
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root
- LEGACY_HIDSERV
- LEGACY_HIDSERV
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- HidServ
- HidServ
Step 3
Search and delete these folders
Step 4
Search and delete this file
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_REDOSD.SMQ. 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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