WORM_AUTOIT.VRZ
W32.Spyrat (Symantec); HEUR:Trojan.Win32.Generic (Kaspersky); W32/AutoIt-PM (Sophos); Trojan.Win32.Generic.pak!cobra (Sunbelt); Worm/AutoRun.MB (AVG)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm 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
753,981 bytes
EXE
Yes
06 Dec 2014
Arrival Details
This worm 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 worm adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
StubPath = "{malware path and file name} -restart"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
IsInstalled = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
DontAsk = "2"
Other System Modifications
This worm adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
This report is generated via an automated analysis system.
SOLUTION
9.700
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.
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components
- {45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
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\Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
- StubPath = "{malware path and file name} -restart"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
- IsInstalled = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{45ea75a0-a269-11d1-b5bf-f1f2f1f2f1f2}
- DontAsk = "2"
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_AUTOIT.VRZ. 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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