Ransom_CRYPFUD.A
Trojan:Win32/Dynamer!ac (Microsoft); Trojan.Gen (Symantec); Trojan-Ransom.Win32.Crypren.vmo (Kaspersky); Troj/Agent-AOCX (Sophos); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan horse FileCryptor.CNQ (AVG)
Windows
![](/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.
Installation
This Trojan creates the following folders:
- %System Root%\Documents and Settings\Wilbert
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
Dropping Routine
This Trojan drops the following files:
- __tmp_rar_sfx_access_check_47734
- 3.png
- 32.exe
- %User Startup%\3.lnk
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)
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
- __tmp_rar_sfx_access_check_47734
- 3.png
- 32.exe
- %User Startup%\3.lnk
Step 3
Search and delete this folder
- %System Root%\Documents and Settings\Wilbert
Step 4
Scan your computer with your Trend Micro product to delete files detected as Ransom_CRYPFUD.A. 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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