TROJ_RANSOM.II
Trojan:Win32/Malagent (Microsoft); PWS-Zbot.gen.ary (McAfee); Trojan.Winlock!gen1 (Symantec); Trojan-Ransom.Win32.PornoAsset.bmtg (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt)
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.
TECHNICAL DETAILS
111,104 bytes
EXE
No
20 Dec 2012
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 creates the following folders:
- %User Profile%\Application Data\xhwrvbc
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Dropping Routine
This Trojan drops the following files:
- %Windows%\Tasks\ybfmmub.job
- %User Profile%\xhwrvbc\ybfmmub.exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
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
- %Windows%\Tasks\ybfmmub.job
- %User Profile%\xhwrvbc\ybfmmub.exe
Step 3
Search and delete this folder
- %User Profile%\Application Data\xhwrvbc
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_RANSOM.II. 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.
Did this description help? Tell us how we did.