Prevx Research Division
OK.EXE
System Back DoorFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove OK.EXE.
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- System Back Door
- Cloaked Malware
- Worm
File Behavior
OK.EXE has been seen to perform the following behavior:
- This Process Contains User Mode Rootkit Functionality and can hide itself from the running process list
- The process hooks code into all running processes which could allow it to take control of the system or record keyboard input, mouse activity and screen contents
- Registers a Dynamic Link Library File
- Executes a Process
- Writes to another Process's Virtual Memory (Process Hijacking)
- Adds a Registry Key (RUN) to auto start Programs on system start up
- This Process Deletes Other Processes From Disk
- This process creates other processes on disk
- Makes outbound connections to other computers using NETBIOSOUT protocols
- Creates new folders in the file system
- Looks at the contents of the autoexec.bat file
- Reads email address and phone book details
- Uses DNS to retrieve the IP address for web sites
- The Process is polymorphic and can change its structure
- Creates system tray popups, messages, errors and security warnings
- Adds a Registry Key (RUNONCE) to auto start Programs on system start up
- 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
- Adds products to the system registry
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Modifies Windows Security Policies to restrict/expand User Privileges on the machine
- Modifies firewall settings, without user permission so it is not blocked from accessing the Internet
- Injects code into other processes
OK.EXE has been the subject of the following behavior:
- Executed as a Process
- Deleted as a process from disk
- Has code inserted into its Virtual Memory space by other programs
- Added as a Registry auto start to load Program on Boot up
- Created as a process on disk
- Created by processes which appear to be checking for interception by security products
- Added as a Registry Key (DXCOM) to auto start Programs on system start up
- Copied to multiple locations on the system
Country Of Origin
The filename OK.EXE was first seen on May 22 2007 in the following geographical regions of the Webroot community:
- Vietnam on May 22 2007
- Spain on Oct 17 2007
- The United Arab Emirates on May 25 2009
- Chile on May 25 2009
- Russian Federation on Jan 20 2010
- The United Kingdom on Jan 20 2010
- Turkey on May 25 2012
File Name Aliases
OK.EXE can also use the following file names:
- SKCVHOST.EXE
- EXPLORE.EXE
- BPK.EXE
- MAIL.EXE
- CTM.EXE
- MSN.EXE
- SRO.EXE
- KLZ.EXE
- WSX.EXE
- WIN32.EXE
- SERVICES.EXE
- SYSTEM.EXE
- WINX86S.EXE
- INSTALL.EXE
- INISYS.EXE
- CARD.EXE
- LOL.EXE
- FUNNEOPETS.EXE
- NASER ABDOLAHI 85.EXE
- H9X4K1G9R9S7.EXE
- ASDASDSD.EXE
- H8Q4N9E9F8M4.EXE
- W7O9L9T7C9N6.EXE
- U9L3C4C1K8A5.EXE
- C7X8R8U5K9N1.EXE
- I5E6P9L9R8G5.EXE
- N4O1R2K9Y3Y7.EXE
- E2E8G1E3T1V5.EXE
- F7F1E1P6A3X4.EXE
- Z4V5I6M4P9S7.EXE
- F9Q3Q8C8K8S7.EXE
- L3K8T2N5G4A2.EXE
- Q5U1R1H8M7Q9.EXE
- N1G5J7O1T4H9.EXE
- F8N1H3Y5.EXE
- Q8A9I9C3V6B8.EXE
- H4T1Y3F8V9T6.EXE
- C6N7E7L7L7J5.EXE
- Y9L3T7F3G9Z8.EXE
- O7N3A5T7H5W8.EXE
- Q4F2J8M2O9F3.EXE
- A1R9O9O7I6O9.EXE
- Q4A1S6D1O4I6.EXE
- J8P4A5N4N1C4.EXE
- F5D2P6R1A5C1.EXE
- G7D6E5M3T9Y1.EXE
- S7R5T5R6I2A4.EXE
- OK-BM7[n].JPG
- S7P2P1I3C4H9.EXE
- X6H7E6X4T2I7.EXE
- F6Q4T4I2H5K2.EXE
- H2K2G6P9I4L2.EXE
- S9V1U3V2R7Y5.EXE
- B8O9S7D8F3X7.EXE
- F6U4Z8H4L1W3.EXE
- Z5I8Y6N3B3B9.EXE
- U9X7U2K4A5O9.EXE
- T8K2I2G5I1C1.EXE
- H4G3U5O1X8U6.EXE
- Q3Z5W6P2Z1N3.EXE
- T1Q9Y9H3C2C4.EXE
- C9U4H2T6S3U6.EXE
- N7E5H7T7Y1P5.EXE
- Y2G4F2E4H2J2.EXE
- J2Q2J5H7Y2Z3.EXE
- Q8E9O9D5T6M5.EXE
- G1A6H1Z3Q5Z3.EXE
- C4C8P6I3K4O9.EXE
- H9U5V5P2Q2D6.EXE
- N5I6M7N6C7W9.EXE
- K9V6T4H2J1K5.EXE
- O4S9J5C6X3O6.EXE
- K5B6J7S9B9J5.EXE
- Q4K3U3L7N7Q5.EXE
- K9F9A9K8P1G3.EXE
- B8E5D8C3X8Y7.EXE
- Y2P5Q7H8G4C8.EXE
- F8J6X7S6H9W5.EXE
- Q8G5A9M5B5T6.EXE
- M8J2H1E8Q9I5.EXE
- W8E8V2D6T4M2.EXE
- M7B8G1A9X6C8.EXE
- N4Z9O9E6K1O9.EXE
- W5Z2D9I7E4P3.EXE
- D2P5S8W8X6A6.EXE
- Q3Y8E6P3K2S9.EXE
- U4A1W9Z8Q1F5.EXE
- D2K5K6A3C5H5.EXE
- E5X1R3D5Z8M2.EXE
- B6Z4K3H3B5V7.EXE
Filesizes
The following file size has been seen:
- 417,792 bytes
- 634,880 bytes
- 475,136 bytes
- 56,155,660 bytes
- 55,296 bytes
- 124,928 bytes
File Type
The filename OK.EXE is used by multiple object types including executable programs,objects.
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