TSPY_ZLADER.I
PWS:Win32/Fareit (Microsoft), Trojan.Win32.Deshacop.cuk (Kaspersky)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet
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.
It also has rootkit capabilities, which enables it to hide its processes and files from the user.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
79,872 bytes
EXE
Yes
01 Jul 2016
Connects to URLs/IPs, Hides files and processes
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 adds the following processes:
- explorer.exe
- svchost.exe
It injects codes into the following process(es):
- explorer.exe
- svchost.exe
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\ftd{5 random numbers}.tmp
Type = 1
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ftd{5 random numbers}.tmp
Start = 4
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ftd{5 random numbers}.tmp
ErrorControl = 1
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ftd{5 random numbers}.tmp
ImagePath = %User Temp%\ftd{5 random numbers}.tmp
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ftd{5 random numbers}.tmp
DisplayName = "ftd{5 random numbers}.tmp"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\ftd{5 random numbers}.tmp
DeleteFlag = 1
Rootkit Capabilities
This Trojan also has rootkit capabilities, which enables it to hide its processes and files from the user.
Process Termination
This Trojan terminates the following services if found on the affected system:
- WINDEFEND
- MPSSVC
- WSCSVC
- WUAUSERV
Other Details
This Trojan connects to the following possibly malicious URL:
- {BLOCKED}othat.com
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.800
12.624.02
01 Jul 2016
12.625.00
01 Jul 2016
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 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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- ftd{5 random numbers}.tmp
- ftd{5 random numbers}.tmp
Step 4
Scan your computer with your Trend Micro product to delete files detected as TSPY_ZLADER.I. 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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