TROJ_FRAUDLO.ANH
Trojan.Win32.Generic.pak!cobra (Sunbelt)
Windows 2000, Windows XP, Windows Server 2003
![](/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%\DOCUME~1
- %System Root%\DOCUME~1\Wilbert
- %User Profile%\LOCALS~1
- %User Temp%\is-5509I.tmp
- %Program Files%\IconColl
- %Start Menu%\Programs\Icon Collector
- %Windows%\LocalUser
(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:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
Autostart Technique
This Trojan registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\system\cURRENTcONTROLsET\
sERVICES\360svc\Parameters
Other System Modifications
This Trojan deletes the following files:
- %User Temp%\nsx2.tmp
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AYAgent.aye
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AYServiceNt.aye
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
ALYac.aye
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AYUpdate.aye
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
sgsvc.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
V3LTray.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
V3LSvc.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Icon Collector Version 1.2_is1
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AYAgent.aye
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AYServiceNt.aye
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
ALYac.aye
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
AYUpdate.aye
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
sgsvc.exe
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
V3LTray.exe
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
V3LSvc.exe
Debugger = "svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Icon Collector Version 1.2_is1
DisplayName = "Icon Collector Version 1.2"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Icon Collector Version 1.2_is1
UninstallString = "{random characters}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\360svc
Description = "Allows McAfee applications to communicate securely on the local network."
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\360svc\Parameters
ServiceDll = "%Windows%\LocalUser\37548dkill.dll"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\360svc
InstallModule = "%User Temp%\sv1.tmp"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\360svc
Type = "12"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\SvcHost
netsvcs = "{random characters}"
(Note: The default value data of the said registry entry is {random values}.)
Dropping Routine
This Trojan drops the following files:
- %User Temp%\icoll100.exe
- %User Temp%\180.exe
- %User Temp%\INS3.tmp
- %User Temp%\DogKiller.sys
- %System%\down.txt
- %User Temp%\sv1.tmp
- %User Temp%\sv2.tmp
- %Program Files%\IconColl\UNINST0.000
- %Windows%\is-VCFOG.tmp
- %Program Files%\IconColl\is-T0IEF.tmp
- %Program Files%\IconColl\is-A1IKF.tmp
- %Program Files%\IconColl\is-MLPBQ.tmp
- %Program Files%\IconColl\is-27VUN.tmp
- %Program Files%\IconColl\is-1B1KJ.tmp
- %Program Files%\IconColl\is-31LM4.tmp
- %Program Files%\IconColl\is-EJS30.tmp
- %Start Menu%\Programs\Icon Collector\Icon Collector.lnk
- %Start Menu%\Programs\Icon Collector\Icon Collector - Help.lnk
- %Start Menu%\Programs\Icon Collector\Updates ....lnk
- %Start Menu%\Programs\Icon Collector\Website ....lnk
- %Start Menu%\Programs\Icon Collector\Uninstall Icon Collector.lnk
- %Program Files%\IconColl\UNINST1.000
- %Windows%\LocalUser\37548dkill.dll
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://hanguolao.{BLOCKED}u.com/lh.txt
- http://{BLOCKED}0.10.76/lh.exe
- http://{BLOCKED}0.10.76/sy.exe
- http://hanguolao.{BLOCKED}u.coclcount/count.asp?mac=0050569c2061&ver=2008041601
- http://dns.{BLOCKED}j.info/18071.html
This report is generated via an automated analysis system.
SOLUTION
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Restart in Safe Mode
Step 3
Delete this registry key
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\system\cURRENTcONTROLsET\sERVICES\360svc
- Parameters
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- AYAgent.aye
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- AYServiceNt.aye
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- ALYac.aye
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- AYUpdate.aye
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- sgsvc.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- V3LTray.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
- V3LSvc.exe
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- Icon Collector Version 1.2_is1
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 NT\CurrentVersion\Image File Execution Options\AYAgent.aye
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AYServiceNt.aye
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ALYac.aye
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AYUpdate.aye
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sgsvc.exe
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\V3LTray.exe
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\V3LSvc.exe
- Debugger = "svchost.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Icon Collector Version 1.2_is1
- DisplayName = "Icon Collector Version 1.2"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Icon Collector Version 1.2_is1
- UninstallString = "{random characters}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\360svc
- Description = "Allows McAfee applications to communicate securely on the local network."
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\360svc\Parameters
- ServiceDll = "%Windows%\LocalUser\37548dkill.dll"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\360svc
- InstallModule = "%User Temp%\sv1.tmp"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\360svc
- Type = "12"
Step 5
Restore this modified 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 NT\CurrentVersion\SvcHost
- From: netsvcs = "{random characters}"
To: netsvcs = ""{random values}""
- From: netsvcs = "{random characters}"
Step 6
Search and delete these files
- %User Temp%\icoll100.exe
- %User Temp%\180.exe
- %User Temp%\INS3.tmp
- %User Temp%\DogKiller.sys
- %System%\down.txt
- %User Temp%\sv1.tmp
- %User Temp%\sv2.tmp
- %Program Files%\IconColl\UNINST0.000
- %Windows%\is-VCFOG.tmp
- %Program Files%\IconColl\is-T0IEF.tmp
- %Program Files%\IconColl\is-A1IKF.tmp
- %Program Files%\IconColl\is-MLPBQ.tmp
- %Program Files%\IconColl\is-27VUN.tmp
- %Program Files%\IconColl\is-1B1KJ.tmp
- %Program Files%\IconColl\is-31LM4.tmp
- %Program Files%\IconColl\is-EJS30.tmp
- %Start Menu%\Programs\Icon Collector\Icon Collector.lnk
- %Start Menu%\Programs\Icon Collector\Icon Collector - Help.lnk
- %Start Menu%\Programs\Icon Collector\Updates ....lnk
- %Start Menu%\Programs\Icon Collector\Website ....lnk
- %Start Menu%\Programs\Icon Collector\Uninstall Icon Collector.lnk
- %Program Files%\IconColl\UNINST1.000
- %Windows%\LocalUser\37548dkill.dll
Step 7
Search and delete these folders
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\Wilbert
- %User Profile%\LOCALS~1
- %User Temp%\is-5509I.tmp
- %Program Files%\IconColl
- %Start Menu%\Programs\Icon Collector
- %Windows%\LocalUser
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_FRAUDLO.ANH. 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 9
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.
- %User Temp%\nsx2.tmp
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