WORM_SIRCAM.C
Worm:Win32/Sircam@mm (Microsoft); W32/SirCam@MM (McAfee); W32.Sircam.Worm@mm (Symantec); Email-Worm.Win32.Sircam.c (Kaspersky); BehavesLike.Win32.Malware.eah (mx-v) (Sunbelt); Worm/Generic.CKGK (AVG)
Windows 2000, Windows XP, Windows Server 2003
![](/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
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.
Installation
This worm creates the following folders:
- %User Temp%\Adobe
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
Other System Modifications
This worm adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
HKEY_CURRENT_USER\Software\Adobe\
Adobe Acrobat\10.0
HKEY_CURRENT_USER\Software\Adobe\
Adobe Synchronizer\10.0
HKEY_LOCAL_MACHINE\System\Acrobatbrokerserverdispatchercpp789
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\Installer\
Migrated
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FC0 = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FD1 = "{malware file name}"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FC1 = "1.88"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FD7 = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FB1B = "%System Root%\recycled\{malware file name}"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FB1BB = "Torbjorn_Anderberg@Hotmail.com"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FB1BA = "mail1.telia.com"
HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
FD3 = "3"
Dropping Routine
This worm drops the following files:
- %User Temp%\{malware file name}
- %System Root%\recycled\SirC32.exe
- %System Root%\recycled\{malware file name}
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
This report is generated via an automated analysis system.
SOLUTION
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 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
- SirCam
- In HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat
- 10.0
- In HKEY_CURRENT_USER\Software\Adobe\Adobe Synchronizer
- 10.0
- In HKEY_LOCAL_MACHINE\System
- Acrobatbrokerserverdispatchercpp789
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\Installer
- Migrated
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_LOCAL_MACHINE\SOFTWARE\SirCam
- FC0 = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FD1 = "{malware file name}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FC1 = "1.88"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FD7 = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FB1B = "%System Root%\recycled\{malware file name}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FB1BB = "Torbjorn_Anderberg@Hotmail.com"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FB1BA = "mail1.telia.com"
- In HKEY_LOCAL_MACHINE\SOFTWARE\SirCam
- FD3 = "3"
Step 4
Search and delete these components
- %User Temp%\{malware file name}
- %System Root%\recycled\SirC32.exe
- %System Root%\recycled\{malware file name}
Step 5
Search and delete this folder
- %User Temp%\Adobe
Step 6
Scan your computer with your Trend Micro product to delete files detected as WORM_SIRCAM.C. 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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