What is “PWS:Win32/Vidar.YC!rfn”?

The PWS:Win32/Vidar.YC!rfn is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

What PWS:Win32/Vidar.YC!rfn virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Behavioural detection: Executable code extraction – unpacking
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Anomalous file deletion behavior detected (10+)
• A process attempted to delay the analysis task.
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• Enumerates running processes
• CAPE extracted potentially suspicious content
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Steals private information from local Internet browsers
• Collects information about installed applications
• Checks the CPU name from registry, possibly for anti-virtualization
• Attempts to modify proxy settings
• Harvests cookies for information gathering
• Harvests credentials from local FTP client softwares
• Harvests information related to installed instant messenger clients
• Harvests information related to installed mail clients
• Collects information to fingerprint the system
• Uses suspicious command line tools or Windows utilities

How to determine PWS:Win32/Vidar.YC!rfn?

File Info:
name: 049E4B35337086E183AC.mlwpath: /opt/CAPEv2/storage/binaries/e06260d9d2c8b8166fef3560ac009133780e5feaeb8e76af48b0eaa71ea2da09crc32: 27B7DBEBmd5: 049e4b35337086e183ac89e3eeecbd6asha1: 63cfe07342d00b5739692cb2bdc4a6ba3b97379asha256: e06260d9d2c8b8166fef3560ac009133780e5feaeb8e76af48b0eaa71ea2da09sha512: 11a21614f9418e538b3b21371fcd452bd7ef1539e3af961b2f21f42436f50886194453bb5df81d1cbd765772534df13d8f881d87336a4354e77e70856190215assdeep: 12288:kJR1Rr0zSdycCjODerCVI14CG9M/JvN7GNKW0dUSNpsLQ1B6a/9bQfL0NQqUn:kb1OzS8cV8CVI1rAMP9dfNugVQfL0Ntype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T18DF4F12276D5C036D0B211720729AA1246FEBD729A334F5B7BE94E8D5B30580FB26773sha3_384: 7cb78b25ca989303ad24d6e01a101a1a83b665a2173f4fb62d64e927c3ec0e2a04f820ff30ec9a13f46f982554d8279bep_bytes: e86b7c0000e939feffffcc8b4c2404f7timestamp: 2018-01-12 06:41:01
Version Info:
Translation: 0x0841 0x04c4

PWS:Win32/Vidar.YC!rfn also known as:

How to remove PWS:Win32/Vidar.YC!rfn?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.