TROJ_ANNOYER.Y
GenericR-CVM!2F39C632FFF8 (McAfee); Trojan.Gen (Symantec); Trojan.Win32.Generic!BT (Sunbelt); Found Win32/DH{gRKBE0GBD3kuExcAATYPAzUUZw} (AVG)
Windows
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
212,992 bytes
EXE
Yes
12 May 2015
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.
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
e6bb3e52 = "{malware path and file name}"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
e6bb3e52 = "{malware path and file name}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
1117caa0 = "%System%\LUMLJJ.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
1117caa0 = "%System%\LUMLJJ.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
b780f797 = "%System%\XRSV.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
b780f797 = "%System%\XRSV.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
fee9d052 = "%Windows%\WRNQCY.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
fee9d052 = "%Windows%\WRNQCY.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
7125c27a = "%System%\AQKD.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
7125c27a = "%System%\AQKD.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
8cb092a5 = "%Windows%\OEE.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
8cb092a5 = "%Windows%\OEE.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
d3be017c = "%System%\WJKZBDL.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
d3be017c = "%System%\WJKZBDL.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
2531fdb9 = "%System%\TIDFJ.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
2531fdb9 = "%System%\TIDFJ.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
ca93d9b8 = "%System%\TTAH.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
ca93d9b8 = "%System%\TTAH.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
48d55cb4 = "%System%\KHM.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
48d55cb4 = "%System%\KHM.exe"
Other System Modifications
This Trojan deletes the following files:
- %System%\LUMLJJ~1.BAT
- %System%\XRSVEX~1.BAT
- %Windows%\WRNQCY~1.BAT
- %System%\AQKDEX~1.BAT
- %Windows%\OEEEXE~1.BAT
- %System%\WJKZBD~1.BAT
- %System%\TIDFJE~1.BAT
- %System%\TTAHEX~1.BAT
- %System%\KHMEXE~1.BAT
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)
Dropping Routine
This Trojan drops the following files:
- %System%\LUMLJJ.exe
- %System%\LUMLJJ.exe.bat
- %System%\XRSV.exe
- %System%\XRSV.exe.bat
- %Windows%\WRNQCY.exe
- %Windows%\WRNQCY.exe.bat
- %System%\AQKD.exe
- %System%\AQKD.exe.bat
- %Windows%\OEE.exe
- %Windows%\OEE.exe.bat
- %System%\WJKZBDL.exe
- %System%\WJKZBDL.exe.bat
- %System%\TIDFJ.exe
- %System%\TIDFJ.exe.bat
- %System%\TTAH.exe
- %System%\TTAH.exe.bat
- %System%\KHM.exe
- %System%\KHM.exe.bat
- %User Startup%\{malware file name}
- %User Startup%\LUMLJJ.exe
- %User Startup%\XRSV.exe
- %User Startup%\WRNQCY.exe
- %User Startup%\AQKD.exe
- %User Startup%\OEE.exe
- %User Startup%\WJKZBDL.exe
- %User Startup%\TIDFJ.exe
- %User Startup%\TTAH.exe
- %User Startup%\KHM.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)
This report is generated via an automated analysis system.
SOLUTION
9.750
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 Safe Mode
Step 3
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
- e6bb3e52 = "{malware path and file name}"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- e6bb3e52 = "{malware path and file name}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- 1117caa0 = "%System%\LUMLJJ.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- 1117caa0 = "%System%\LUMLJJ.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- b780f797 = "%System%\XRSV.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- b780f797 = "%System%\XRSV.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- fee9d052 = "%Windows%\WRNQCY.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- fee9d052 = "%Windows%\WRNQCY.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- 7125c27a = "%System%\AQKD.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- 7125c27a = "%System%\AQKD.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- 8cb092a5 = "%Windows%\OEE.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- 8cb092a5 = "%Windows%\OEE.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- d3be017c = "%System%\WJKZBDL.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- d3be017c = "%System%\WJKZBDL.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- 2531fdb9 = "%System%\TIDFJ.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- 2531fdb9 = "%System%\TIDFJ.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- ca93d9b8 = "%System%\TTAH.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- ca93d9b8 = "%System%\TTAH.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- 48d55cb4 = "%System%\KHM.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- 48d55cb4 = "%System%\KHM.exe"
Step 4
Search and delete these components
- %System%\LUMLJJ.exe
- %System%\LUMLJJ.exe.bat
- %System%\XRSV.exe
- %System%\XRSV.exe.bat
- %Windows%\WRNQCY.exe
- %Windows%\WRNQCY.exe.bat
- %System%\AQKD.exe
- %System%\AQKD.exe.bat
- %Windows%\OEE.exe
- %Windows%\OEE.exe.bat
- %System%\WJKZBDL.exe
- %System%\WJKZBDL.exe.bat
- %System%\TIDFJ.exe
- %System%\TIDFJ.exe.bat
- %System%\TTAH.exe
- %System%\TTAH.exe.bat
- %System%\KHM.exe
- %System%\KHM.exe.bat
- %User Startup%\{malware file name}
- %User Startup%\LUMLJJ.exe
- %User Startup%\XRSV.exe
- %User Startup%\WRNQCY.exe
- %User Startup%\AQKD.exe
- %User Startup%\OEE.exe
- %User Startup%\WJKZBDL.exe
- %User Startup%\TIDFJ.exe
- %User Startup%\TTAH.exe
- %User Startup%\KHM.exe
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_ANNOYER.Y. 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 6
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%\LUMLJJ~1.BAT
- %System%\XRSVEX~1.BAT
- %Windows%\WRNQCY~1.BAT
- %System%\AQKDEX~1.BAT
- %Windows%\OEEEXE~1.BAT
- %System%\WJKZBD~1.BAT
- %System%\TIDFJE~1.BAT
- %System%\TTAHEX~1.BAT
- %System%\KHMEXE~1.BAT
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