TROJ_IBOT.A
a variant of MSIL/TrojanDownloader.Agent.CXV (ESET-NOD32)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
Arrival Details
This Trojan may be downloaded from the following remote sites:
- http://ibot.{BLOCKED}ns.me/installer.exe
- http://{BLOCKED}red-apps.com/ibot/installer.exe
Installation
This Trojan creates the following folders:
- %System Root%\users\public\iBot
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft Drivers = ""%System Root%\users\public\iBot\Adobe.exe""
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft windows updates = ""%System Root%\users\public\iBot\svchostex.exe""
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://ibot.{BLOCKED}ns.me/client.exe
- http://{BLOCKED}red-apps.com/ibot/client.exe
- http://{BLOCKED}red-apps.com/ibot/installer.exe
- http://ibot.{BLOCKED}ns.me/installer.exe
It saves the files it downloads using the following names:
- %System Root%\users\public\iBot\Adobe.exe (installer.exe)
- %System Root%\users\public\iBot\svchostex.exe (client.exe)
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
Other Details
This Trojan connects to the following website to send and receive information:
- http://ibot.{BLOCKED}ns.me/config.ini
- http://{BLOCKED}red-apps.com/ibot/config.ini
It does the following:
- The "config.ini" contains the following information which it uses to report back to remote malware user via SMTP:
- Recipient
- Sender
- Password
- It uses the SMTP server "smtp.gmail.com" to report its installation to the remote malicious user.
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Microsoft Drivers = ""%System Root%\users\public\iBot\Adobe.exe""
- Microsoft Drivers = ""%System Root%\users\public\iBot\Adobe.exe""
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Microsoft windows updates = ""%System Root%\users\public\iBot\svchostex.exe""
- Microsoft windows updates = ""%System Root%\users\public\iBot\svchostex.exe""
Step 3
Search and delete this folder
Step 4
Search and delete these folders
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_IBOT.A. 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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