TROJ_PROXY.EWI
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This Trojan may arrive bundled with malware packages as a malware component. 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 does not have any propagation routine.
It does not have any backdoor routine.
It does not drop any other file.
It does not have any downloading capability.
It does not have any information-stealing capability.
TECHNICAL DETAILS
19,456 bytes
EXE
Yes
20 May 2014
Connects to URLs/IPs
Arrival Details
This Trojan may arrive bundled with malware packages as a malware component.
It 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 registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
Type = "272"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
Start = "2"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
ErrorControl = "0"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
ImagePath = "{malware path}\{malware file name}.{extension}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
DisplayName = "Windows Detections"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
ObjectName = "LocalSystem"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection
Description = "Provide Windows Detection"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection\Security
Security = "{hex values}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection\Enum
0 = "Root\LEGACY_ALERTER_DETECTION\0000"
It 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\Alerter Detection
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Alerter Detection\Enum
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000\Control
It adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION
NextInstance = "1"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000
Service = "Alerter Detection"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000
Legacy = "1"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000
ConfigFlags = "0"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000
Class = "LegacyDriver"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000
DeviceDesc = "Windows Detections"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_ALERTER_DETECTION\
0000\Control
ActiveService = "Alerter Detection"
Propagation
This Trojan does not have any propagation routine.
Backdoor Routine
This Trojan does not have any backdoor routine.
Dropping Routine
This Trojan does not drop any other file.
Download Routine
This Trojan does not have any downloading capability.
Information Theft
This Trojan does not have any information-stealing capability.
NOTES:
It will listen to the following port in which it serves as a way before responding a connection:
- 1533
It provides a connection to the following IP address:
- {BLOCKED}.{BLOCKED}.238.178:443
It does not have rootkit capabilities.
It does not exploit any vulnerability.
SOLUTION
9.700
10.810.07
23 May 2014
10.811.00
23 May 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 Safe Mode
Step 4
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
- Alerter Detection
- Alerter Detection
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root
- LEGACY_ALERTER_DETECTION
- LEGACY_ALERTER_DETECTION
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_PROXY.EWI. 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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