TROJ_AGENT.SMRC
TrojanDropper:Win32/Jadtre.B (Microsoft); BackDoor-EGF (McAfee); Trojan.Dropper (Symantec); Trojan-Downloader.Win32.Agent.cvol (Kaspersky); Trojan-Dropper.Win32.Jadtre.c (v) (Sunbelt); Trojan horse Dropper.Generic.BAXQ (AVG)
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.
It deletes itself after execution.
TECHNICAL DETAILS
32,768 bytes
EXE
No
06 Jun 2013
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.
Other System Modifications
This Trojan modifies the following file(s):
- %Windows%\Prefetch\NTOSBOOT-B00DFAAD.pf
- %Windows%\Prefetch\WUAUCLT.EXE-399A8E72.pf
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
It deletes the following files:
- %Temporary Internet Files%\Content.IE5\KZSJCDCF\0[1].htm
- %Temporary Internet Files%\Content.IE5\89ABCDEF\0[1].htm
- %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log
(Note: %Temporary Internet Files% is the Temporary Internet Files folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temporary Internet Files on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Microsoft\Windows\Temporary Internet Files on Windows Vista and 7.. %Windows% is the Windows folder, which is usually C:\Windows.)
Dropping Routine
This Trojan drops the following files:
- %Temp%\0525.exe
- %Temp%\02210.exe
- %Temp%\01700.exe
- %Temp%\01749.exe
- %Temp%\01191.exe
- %Temp%\02719.exe
- %Temp%\0783.exe
- %Temp%\01292.exe
- %Temp%\02771.exe
(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}.211.244/bhy/0.exe
It deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.300
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
Search and delete these components
- %Temp%\0525.exe
- %Temp%\02210.exe
- %Temp%\01700.exe
- %Temp%\01749.exe
- %Temp%\01191.exe
- %Temp%\02719.exe
- %Temp%\0783.exe
- %Temp%\01292.exe
- %Temp%\02771.exe
Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_AGENT.SMRC. 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 4
Restore deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %Windows%\Prefetch\NTOSBOOT-B00DFAAD.pf
- %Windows%\Prefetch\WUAUCLT.EXE-399A8E72.pf
Step 5
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.
- %Temporary Internet Files%\Content.IE5\KZSJCDCF\0[1].htm
- %Temporary Internet Files%\Content.IE5\89ABCDEF\0[1].htm
- %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log
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