TROJ_LETHIC.WSVQ
Trojan.Win32.Scar.prlk (Kaspersky)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
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
320,512 bytes
EXE
Yes
16 Mar 2017
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 drops the following copies of itself into the affected system and executes them:
- %AppData%\roaming\{GUID}\{random}.exe
It adds the following processes:
- svchost.exe
It creates the following folders:
- %AppData%\roaming\{GUID}
It injects codes into the following process(es):
- svchost.exe
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{GUID} = "%AppData%\roaming\{GUID}\{random}.exe"
Other Details
This Trojan does the following:
- It checks for the following strings to avoid virtual machines:
- vbox
- qemu
- vmware
- virtual hd
SOLUTION
9.850
13.280.07
16 Mar 2017
13.281.00
17 Mar 2017
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- {GUID} = "%AppData%\roaming\{GUID}\{random}.exe"
- {GUID} = "%AppData%\roaming\{GUID}\{random}.exe"
Step 4
Search and delete these folders
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_LETHIC.WSVQ. 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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