TSPY_BANKER.YYRD
PWS:Win32/Nabrek.A (Microsoft), Win32:Banker-LGF [Trj] (Avast), a variant of Win32/Spy.Banker.AAVQ (ESET-NOD32)
Windows

Threat Type: Spyware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This spyware 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
820,382 bytes
EXE
AHTeam EP Protector
Yes
27 Oct 2015
Connects to URLs/IPs
Arrival Details
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
MyKB = "{malware path}\{malware filename}.exe"
NOTES:
This spyware accesses the following website/s to get the URL of its configuration file:
- http://www.{BLOCKED}est.com/pin/66217056995285416/
As of this writing, no embedded URL is found in the website.
It saves the downloaded configuration file as:
- %User Temp%\WhiteURL.txt
This spyware steals important banking information by injecting malicious codes to bank webpages with URLs containing any of the following:
- kbstar.com
- wooribank.com
- banking.nonghyup.com
- v3clinic.ahnlab.com
- hanabank.com
- www.ibk.co.kr
- banking.shinhan.com
- www.fcsc.kr/B/fu_b_02_01.jsp?business_type=B
It injects an iframe in the websites tp redirect to the following URLs:
- {BLOCKED}.{BLOCKED}.165.239:8000/security1.php
- {BLOCKED}.{BLOCKED}.165.239:8001/security1.php
- {BLOCKED}.{BLOCKED}.165.239:8002/security1.php
- {BLOCKED}.{BLOCKED}.165.239:80/index.html
- {BLOCKED}.{BLOCKED}.165.239:8004/resource/download/veraport/install.php
- {BLOCKED}.{BLOCKED}.165.239:8005/mybank.php
- {BLOCKED}.{BLOCKED}.165.239:8006/install.php
- {BLOCKED}.{BLOCKED}.165.239:8007/shttp/install/index.html/index.php
- {BLOCKED}.{BLOCKED}.165.239:9000/step/main.php
- {BLOCKED}.{BLOCKED}.165.239:9000/tongji.html
It accesses the URL {BLOCKED}.{BLOCKED}.165.239:9000/bpop.php?ip={BLOCKED}.{BLOCKED}.165.239 when users access the following URLs:
- www.naver.com
- www.daum.net
- www.nate.com
SOLUTION
9.800
11.284.06
18 Nov 2014
11.285.00
19 Nov 2014
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BANKER.YYRD. 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.
Step 4
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- MyKB = "{malware path}\{malware filename}.exe"
- MyKB = "{malware path}\{malware filename}.exe"
Step 5
Search and delete these files
- %User Temp%\WhiteURL.txt
Step 6
Restart in Safe Mode
Did this description help? Tell us how we did.