TROJ_BANLOAD.YZP
Troj/DwnLdr-LEG(Sophos), W32/Banload.LEG(Fortinet), Win32/TrojanDownloader.Banload.TAH(ESET)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/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 executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
TECHNICAL DETAILS
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 non-malicious file:
- %Application Data%\ID - contains URL of the remote server
(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.)
Download Routine
This Trojan accesses the following websites to download files:
- http://{BLOCKED}.{BLOCKED}.66.54/pretom7/ptx{num}.html
It saves the files it downloads using the following names:
- %Application Data%\{Machine Name}.jpg - TSPY_BANKER.YZP
(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.)
It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
NOTES:
It connects to the following URL to log infection to malware server:
- http://{BLOCKED}.{BLOCKED}.66.54/pretom7/infx/s1/conta.php?chave=bola&url={Filename and size of the downloaded file} {Language} {Country}
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
Remove the malware/grayware file dropped/downloaded by TROJ_BANLOAD.YZP
- TSPY_BANKER.YZP
Step 3
Search and delete these files
- %Application Data%\ID
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_BANLOAD.YZP. 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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