File Investigation Report
PER.DLL
Malicious SoftwarePC Cleanup in 3 Easy Steps
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Associated Malware Groups
The unsafe files using this name are associated with the malware group:
- Malicious Software
File Behavior
PER.DLL has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Adds a Registry Key (RUNONCE) to auto start Programs on system start up
- Changes to the file command map within the registry
- Found on infected systems and resists interrogation by security products
- Uses rootkit techniques to conceal its presence, interrogation or removal
PER.DLL has been the subject of the following behavior:
- Created as a process on disk
- Deleted as a process from disk
- Registered as a Dynamic Link Library File
Country Of Origin
The filename PER.DLL was first seen on Jun 23 2007 in the following geographical regions of the Prevx community:
- Peru on Jun 23 2007
- Colombia on Jun 23 2007
- Spain on Oct 18 2007
- Dominican Republic on Jan 14 2008
- Uruguay on Oct 6 2008
- The United Kingdom on Feb 23 2010
File Name Aliases
PER.DLL can also use the following file names:
- PERSYSTEMS/PERAV/PER.DLL
- 61014816.DLL
- 26988447.DLL
- 25756217.SVD
- 37982109.DLL
- 96622588.DLL
- 24881264.DLL
- 12778401.DLL
- 67383741.SVD
- 24872911.SVD
- 17221778.DLL
Filesizes
The following file size has been seen:
- 122,880 bytes
- 98,304 bytes
- 106,496 bytes
- 393,216 bytes
- 142,848 bytes
File Type
The filename PER.DLL refers to many versions of a dynamic link library.
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