BKDR_SIMDA.LKE
Generic-FAGW!4A15908FC736 (McAfee); HEUR:Trojan.Win32.Generic (Kaspersky); Backdoor.Win32.Simda.bdao (v) (Sunbelt); Win32/Cryptor (AVG)
Windows
![](/vinfo/imgFiles/legend.jpg)
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
178,637 bytes
EXE
No
04 Dec 2014
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:
- %Program Files%\Common Files\SpeechEngines\Microsoft\SPse
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Dropping Routine
This backdoor drops the following files:
- %Program Files%\Common Files\SpeechEngines\Microsoft\SPse\evr2.gen
- %User Temp%\5.tmp
- %User Temp%\B.tmp
- %User Temp%\11.tmp
- %User Temp%\3.tmp
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
This report is generated via an automated analysis system.
SOLUTION
9.700
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
- %Program Files%\Common Files\SpeechEngines\Microsoft\SPse\evr2.gen
- %User Temp%\5.tmp
- %User Temp%\B.tmp
- %User Temp%\11.tmp
- %User Temp%\3.tmp
Step 3
Search and delete this folder
- %Program Files%\Common Files\SpeechEngines\Microsoft\SPse
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_SIMDA.LKE. 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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