The virus contains one text string: "DataLock version 1.00". It infects all EXE files, but COM files are only infected if they are larger than 22999 bytes.
In addition to infecting files, the virus carries a non-destructive, but highly annoying payload. When a file is opened with function 3DH, the virus checks if the filename matches "*.?BF", which is in all likelihood intended to match .DBF files (dBASE data files). If the name matches, the virus produces a "Too many files open" error message, making the file inaccessible.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
A bigger, "buggy" version.