BKDR_DRIDEX.YYSSK
Trojan.Win32.Razy.cid (Kaspersky), Trojan:Win32/Dynamer!ac (Microsoft)
Windows
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Via email, Downloaded from the Internet
This spyware arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
200,704 bytes
EXE
Yes
10 Nov 2016
Connects to URLs/IPs, Downloads files
Arrival Details
This spyware arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
It 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 spyware adds the following processes:
- spoolsv.exe
It injects codes into the following process(es):
- spoolsv.exe
Other Details
This spyware connects to the following website to send and receive information:
- {BLOCKED}.{BLOCKED}.158.54:53443
- {BLOCKED}.{BLOCKED}.86.72:3443
- {BLOCKED}.{BLOCKED}.45.29:40443
It does the following:
- Download configuration files
- Downloads and executes a file
- Injects the downloaded file to a process
- It checks for the presence of the following registry to check if a program is installed:
- HKEY_LOCAL_MACHINE/SOFTWARE/TrendMicro/Vizor
SOLUTION
9.800
12.890.03
10 Nov 2016
12.891.00
11 Nov 2016
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
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_DRIDEX.YYSSK. 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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