TROJ_CHEPRO.YPPB
Trojan:Win32/Dynamer!ac (Microsoft); RDN/PWS-Banker!dk (McAfee); Trojan.Gen (Symantec); HEUR:Trojan.Win32.Generic (Kaspersky); Troj/DwnLdr-LWX (Sophos); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Downloader.Banload2.PVN (AVG)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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
Arrival Details
This Trojan 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 Trojan creates the following folders:
- %System Root%\ProgramData
- %System Root%\zNkQMClsGQtC
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
Other System Modifications
This Trojan deletes the following files:
- %System Root%\zNkQMClsGQtC\BlKOoQ.exe
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
Dropping Routine
This Trojan drops the following files:
- __tmp_rar_sfx_access_check_77421
- drweb.cpl
- mesweb.exe
- %System Root%\ProgramData\sopa.zip
- %System Root%\zNkQMClsGQtC\JRD2Pd3RtX7pHRHjWdWQ.drv
- %System Root%\zNkQMClsGQtC\cSSxlFLVXYYidBSOfwLh.drv
- %System Root%\zNkQMClsGQtC\lGKwhgjDNX731QgsYzvI.jmp
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}.137.138/core/modtsi/sopa.zip
- http://hgbyi.{BLOCKED}as.com/ByScreen.hlp
- http://hgbyi.{BLOCKED}as.com/Catch.hlp
- http://hgbyi.{BLOCKED}as.com/TuckMS.hlp
- http://hgbyi.{BLOCKED}as.com/Start.hlp
- http://hgbyi.{BLOCKED}as.com/LedZip.hlp
- {BLOCKED}3.86.203
This report is generated via an automated analysis system.
SOLUTION
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_77421
- drweb.cpl
- mesweb.exe
- %System Root%\ProgramData\sopa.zip
- %System Root%\zNkQMClsGQtC\JRD2Pd3RtX7pHRHjWdWQ.drv
- %System Root%\zNkQMClsGQtC\cSSxlFLVXYYidBSOfwLh.drv
- %System Root%\zNkQMClsGQtC\lGKwhgjDNX731QgsYzvI.jmp
Step 3
Search and delete these folders
- %System Root%\ProgramData
- %System Root%\zNkQMClsGQtC
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_CHEPRO.YPPB. 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 5
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %System Root%\zNkQMClsGQtC\BlKOoQ.exe
Did this description help? Tell us how we did.