TROJ_EXEBOT.SM
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
TECHNICAL DETAILS
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}\
InprocServer32
(default) = {malware path and filename}
It registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CLASSES_ROOT\AppID\main.DLL
HKEY_CLASSES_ROOT\AppID\{A0E1054B-01EE-4D57-A059-4D99F339709F}
HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
HKEY_CLASSES_ROOT\CurVer
HKEY_CLASSES_ROOT\Interface\{986A8AC1-AB4D-4F41-9068-4B01C0197867}
HKEY_CLASSES_ROOT\LXà)û`Ú »¨Mˆ£|³c¨‘f1-58C1-47DB-A404-FBE00A6C5486}'
HKEY_CLASSES_ROOT\TypeLib\{8E3C68CD-F500-4A2A-8CB9-132BB38C3573}
HKEY_CLASSES_ROOT\main.BHO
HKEY_CLASSES_ROOT\main.BHO.1
HKEY_CLASSES_ROOT\‚”#˜‚
SOLUTION
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Scan your computer with your Trend Micro product and note files detected as TROJ_EXEBOT.SM
Step 3
Restart in Safe Mode
Step 4
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_CLASSES_ROOT\AppID
- main.DLL
- main.DLL
- In HKEY_CLASSES_ROOT\AppID
- {A0E1054B-01EE-4D57-A059-4D99F339709F}
- {A0E1054B-01EE-4D57-A059-4D99F339709F}
- In HKEY_CLASSES_ROOT\CLSID
- {AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
- {AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
- In HKEY_CLASSES_ROOT
- CurVer
- CurVer
- In HKEY_CLASSES_ROOT\Interface
- {986A8AC1-AB4D-4F41-9068-4B01C0197867}
- {986A8AC1-AB4D-4F41-9068-4B01C0197867}
- In HKEY_CLASSES_ROOT
- LXà)û`Ú »¨Mˆ£|³c¨‘f1-58C1-47DB-A404-FBE00A6C5486}'
- LXà)û`Ú »¨Mˆ£|³c¨‘f1-58C1-47DB-A404-FBE00A6C5486}'
- In HKEY_CLASSES_ROOT\TypeLib
- {8E3C68CD-F500-4A2A-8CB9-132BB38C3573}
- {8E3C68CD-F500-4A2A-8CB9-132BB38C3573}
- In HKEY_CLASSES_ROOT
- main.BHO
- main.BHO
- In HKEY_CLASSES_ROOT
- main.BHO.1
- main.BHO.1
- In HKEY_CLASSES_ROOT
- ‚”#˜‚
- ‚”#˜‚
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
- {AFD4AD01-58C1-47DB-A404-FBE00A6C5486}
Step 5
Search and delete the file detected as TROJ_EXEBOT.SM
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