About “PUP.Optional.WebCompanion” infection

The PUP.Optional.WebCompanion 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.

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What PUP.Optional.WebCompanion virus can do?

• Sample contains Overlay data
• Presents an Authenticode digital signature
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• The binary contains an unknown PE section name indicative of packing
• Authenticode signature is invalid
• Anomalous binary characteristics

How to determine PUP.Optional.WebCompanion?

File Info:
name: 0D853331E797AC5109CF.mlw
path: /opt/CAPEv2/storage/binaries/93dc97204695832da3cdd7459dd1c730bf963eac77b9eda2be526734d162feb8
crc32: F75FF27E
md5: 0d853331e797ac5109cf030fe9645c70
sha1: 106d1aed67433be1e30277efec87de4e5a4d6fcf
sha256: 93dc97204695832da3cdd7459dd1c730bf963eac77b9eda2be526734d162feb8
sha512: 99a77210fac2d7ca31c0db776c2addfaa61a6dae855e187cf353b726e7c2207f4fa6f125bce02c4fac6bb9fcdd0ca7cb677827a0f7ae003028334da9e4479de1
ssdeep: 12288:RG5knZfFKerD6pW21Cg/f35Q5911xbBBKTYGXYm4FYoZHYtIEb:RG50ZfFKUew21XX3EN3K3J4DgIEb
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T115C4F1127EE189BAD5420131C974AFE5E2F6FE161E21546333993E3E3F3A542C132A5E
sha3_384: 5487c673be66acfecffd7f4feb706b155bfc2274ad440191458acf6ab61774c2899ab8f3f913282d465aa7626f1705c7
ep_bytes: 558bec6aff68e8b9410068fc47410064
timestamp: 2011-04-18 18:54:06

Version Info:
FileVersion: 11.908.5.907
ProductVersion: 11.908.5.907
CompanyName: Lavasoft
FileDescription: Web Companion Installer
InternalName: Installer.exe
LegalCopyright: c Lavasoft Limited. All Rights Reserved.
OriginalFilename: Installer.exe
ProductName: Web Companion Installer
Translation: 0x0409 0x04b0

PUP.Optional.WebCompanion also known as:

How to remove PUP.Optional.WebCompanion?

• 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.