BKDR_ZEGOST.NV
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor 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
98,304 bytes
EXE
No
23 Oct 2013
Arrival Details
This backdoor 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 backdoor creates the following folders:
- %User Profile%\Application Data\Microsoft Corporation
- %User Profile%\Microsoft Corporation\{D2423620-51A0-11D2-9CAF-0060B0EC3D39}
(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 backdoor drops the following files:
- %User Profile%\{D2423620-51A0-11D2-9CAF-0060B0EC3D39}\8E0241F1
(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.)
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 this file
- %User Profile%\{D2423620-51A0-11D2-9CAF-0060B0EC3D39}\8E0241F1
Step 3
Search and delete these folders
- %User Profile%\Application Data\Microsoft Corporation
- %User Profile%\Microsoft Corporation\{D2423620-51A0-11D2-9CAF-0060B0EC3D39}
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_ZEGOST.NV. 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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