TrojanSpy.Win32.ICEDID.FAIU
Troj/IcedID-Q (SOPHOS_LITE)
Windows
Threat Type: Trojan Spy
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan Spy arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It does not have any propagation routine.
It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information. However, as of this writing, the said sites are inaccessible.
As of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
Arrival Details
This Trojan Spy 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 Spy adds the following folders:
- (%Application Data% or %AppDataLocal%)\{Random string}\{Random string}
- C:\ProgramData\{Username}
- %AppDataLocal%\{Username}
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It drops the following files:
- (%Application Data% or %AppDataLocal%)\{Random string}\{Random string}\{Random characters}.dll (Slightly modified copy of itself)
- %User Temp%\{Random character}.tmp (Self-signed certificate)
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following processes:
- %System%\msiexec.exe /i {Random characters}.msi
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- {{Random 8 characters}-{Random 4 characters}-{Random 4 characters}-{Random 4 characters}-{Random 8 characters}}
Propagation
This Trojan Spy does not have any propagation routine.
Backdoor Routine
This Trojan Spy executes the following commands from a remote malicious user:
- Update config
- Reboot system
- Execute arbitrary commands
- Steal cookies
- Steal credentials
- Get logs
- Get file information
- Get system information
It connects to the following websites to send and receive information:
- http://{BLOCKED}ite3.club/audio/?z={Encrypted information}
- http://{BLOCKED}iprooslk.cyou/audio/?z={Encrypted information}
However, as of this writing, the said sites are inaccessible.
Rootkit Capabilities
This Trojan Spy does not have rootkit capabilities.
Download Routine
This Trojan Spy connects to the following URL(s) to download its component file(s):
- http://{BLOCKED}ite3.club/image/?id={Random characters}
- http://{BLOCKED}iprooslk.cyou/image/?id={Random characters}
It saves the files it downloads using the following names:
- C:\ProgramData\{Username}\{Random characters}.png
- %AppDataLocal%\{Username}\{Random characters}.png
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
As of this writing, the said sites are inaccessible.
Information Theft
Upon execution of the affected application, it gathers the following information:
- MAC address
- Computer name
- Username
- OS information
- Status if sample is ran on a virtual machine
- Domain in which device is located
- Downloader version
- User SID
- Time executed
Other Details
This Trojan Spy does the following:
- It hooks itself to Chrome or Firefox to steal information.
It does not exploit any vulnerability.
It adds the following scheduled tasks:
- Task name: {Random string}_{{Random 8 characters}-{Random 4 characters}-{Random 4 characters}-{Random 4 characters}-{Random 8 characters}}
Task to be run: regsvr32.exe /s {Slightly modified copy of itself}
Task trigger: At logon, every one hour
SOLUTION
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
- Troj.Win32.TRX.XXPE50FFF040
Step 2
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 3
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 4
Restart in Safe Mode
Step 5
Deleting Scheduled Tasks
The following {Task Name} - {Task to be run} listed should be used in the steps identified below:
- Task name: {Random string}_{{Random 8 characters}-{Random 4 characters}-{Random 4 characters}-{Random 4 characters}-{Random 8 characters}}
Task to be run: regsvr32.exe /s {Slightly modified copy of itself}
For Windows 2000, Windows XP, and Windows Server 2003:
- Open the Windows Scheduled Tasks. Click Start>Programs>Accessories>
System Tools>Scheduled Tasks. - Locate each {Task Name} values listed above in the Name column.
- Right-click on the said file(s) with the aforementioned value.
- Click on Properties. In the Run field, check for the listed {Task to be run}.
- If the strings match the list above, delete the task.
For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:
- Open the Windows Task Scheduler. To do this:
• On Windows Vista, Windows 7, and Windows Server 2008, click Start, type taskschd.msc in the Search input field, then press Enter.
• On Windows 8, Windows 8.1, and Windows Server 2012, right-click on the lower left corner of the screen, click Run, type taskschd.msc, then press Enter. - In the left panel, click Task Scheduler Library.
- In the upper-middle panel, locate each {Task Name} values listed above in the Name column.
- In the lower-middle panel, click the Actions tab. In the Details column, check for the {Task to be run} string.
- If the said string is found, delete the task.
Step 6
Search and delete these files
- (%Application Data% or %AppDataLocal%)\{Random string}\{Random string}\{Random characters}.dll (Slightly modified copy of itself)
- %User Temp%\{Random character}.tmp (Self-signed certificate)
- C:\ProgramData\{Username}\{Random characters}.png
- %AppDataLocal%\{Username}\{Random characters}.png
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TrojanSpy.Win32.ICEDID.FAIU. 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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