BKDR_SHOTODOR.UL
W32/AutoIt-AMK, Mal/MalitRar-B (Sophos); Trojan horse Ransomer.CML (AVG)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
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
1,278,050 bytes
EXE
No
06 Aug 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:
- %System Root%\Documents and Settings\Wilbert
- %User Profile%\tvbe9l1nq2ia
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %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:
- __tmp_rar_sfx_access_check_40250
- rsHpwhqKM.VAA
- update.exe
- mWkGctZ.YAD
- DRmyqE.ZAZ
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
- __tmp_rar_sfx_access_check_40250
- rsHpwhqKM.VAA
- update.exe
- mWkGctZ.YAD
- DRmyqE.ZAZ
Step 3
Search and delete these folders
- %System Root%\Documents and Settings\Wilbert
- %User Profile%\tvbe9l1nq2ia
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_SHOTODOR.UL. 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.