TROJ_RANSOM.DTY
TrojanDownloader:Win32/Smawis.A (Microsoft); PWS-Zbot.gen.oj (McAfee); Trojan-Ransom.Win32.Blocker.akrc (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Generic31.XEB (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.
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.
Dropping Routine
This Trojan drops the following files:
- %User Profile%\Application Data\nMNtffsdf5ev.exe
- %User Profile%\Application Data\nMNtfaARw2l97e30p5ev.exe
(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.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}.177.120/smo
- http://{BLOCKED}.177.124/smo
This report is generated via an automated analysis system.
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
Search and delete these components
- %User Profile%\Application Data\nMNtffsdf5ev.exe
- %User Profile%\Application Data\nMNtfaARw2l97e30p5ev.exe
Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_RANSOM.DTY. 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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