Prevx Research Division
PATCH1.EXE
System Back DoorFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- System Back Door
- Cloaked Malware
- Malware Downloader
File Behavior
PATCH1.EXE has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- The Process is polymorphic and can change its structure
- Creates system tray popups, messages, errors and security warnings
- This process creates other processes on disk
- This Process is a file infector which modifies program files to include a copy of the infection
- Includes file creation code which could be used to test for interception by security products
- Found on infected systems and resists interrogation by security products
- Uses low level functions to hide itself from the user and from system/security processes
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Writes to another Process's Virtual Memory (Process Hijacking)
PATCH1.EXE has been the subject of the following behavior:
- Deleted as a process from disk
- Created as a process on disk
- Executed as a Process
- Executed from Temporary Folders
- Created as a new Background Service on the machine
- Has code inserted into its Virtual Memory space by other programs
Country Of Origin
The filename PATCH1.EXE was first seen on May 23 2007 in the following geographical regions of the Webroot community:
- Russian Federation on May 23 2007
- Spain on May 30 2007
- Latvia on May 30 2007
- Italy on Jun 6 2008
- The United States on Jul 9 2008
- Egypt on May 28 2009
- The United Kingdom on Jan 10 2012
File Name Aliases
PATCH1.EXE can also use the following file names:
- PATCH.EXE
- PATCH-RESURRECTION/PATCH1.EXE
- TROJAN FIRME Y FUNCIONANDO VERSION 6.7.0/PATCH/PATCH1.EXE
- PATCH1_SOFTGOZAR.COM.EXE
- QUARK.EXE
Filesizes
The following file size has been seen:
- 1,234,427 bytes
- 99,840 bytes
- 90,624 bytes
- 72,600 bytes
- 3,850,729 bytes
- 18,944 bytes
- 20,297 bytes
File Type
The filename PATCH1.EXE refers to many versions of an executable program.
File Activity
One or more files with the name PATCH1.EXE creates, deletes, copies or moves the following files and folders:
- Deletes c:\docume~1\jim\locals~1\temp\nso3.tmp
- Creates c:\docume~1\jim\locals~1\temp\PATCH1.MSP
- Creates c:\docume~1\jim\locals~1\temp\Firefox.exe
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