TROJ_SERVSTART.JWW
DDoS:Win32/Nitol.B (Microsoft); Trojan Horse (Symantec); Trojan.Win32.StartServ.eb (Kaspersky); Backdoor.Win32.Ircbot.gen (v) (Sunbelt); Trojan horse Atros.XYS (AVG)
Windows
![](/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.
It deletes itself after execution.
TECHNICAL DETAILS
719,872 bytes
EXE
No
06 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.
Installation
This Trojan drops the following copies of itself into the affected system:
- %System%\imasmc.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other System Modifications
This Trojan adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\MicroSoftS
Description = "MicroSoftS"
Other Details
This Trojan connects to the following possibly malicious URL:
- {BLOCKED}0
It deletes itself after execution.
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
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\SYSTEM\ControlSet001\Services\MicroSoftS
- Description = "MicroSoftS"
Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_SERVSTART.JWW. 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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