PUP.Optional.WebCompanion removal guide

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
• Drops a binary and executes it
• 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: 9BB23DFF61DE0C00BA61.mlw
path: /opt/CAPEv2/storage/binaries/de48f185965aaa52f9cc87316715bb9257a8da311c42cc0e9399436a5179130c
crc32: D9F48BD9
md5: 9bb23dff61de0c00ba61ee61d9c16810
sha1: c0af763c08e2972cff729c18d5f41d6267010ceb
sha256: de48f185965aaa52f9cc87316715bb9257a8da311c42cc0e9399436a5179130c
sha512: 50a7fd0539d08ff287eab6524aa23f0052f51e0914f01de8b6eb604034d81e46cbe4ab93907156b6774043dd90906420ef88a119511d4afe101b20c27adf388d
ssdeep: 12288:2G5knZfFKeri6pW21Cg/f35Q5911xbBBKTYGXYm4FYoZHYtI82:2G50ZfFKUBw21XX3EN3K3J4DgI82
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1F4C4F1127EE189BAD5420131C974AFE5E2F6FE161E21546333993E3E3F3A542C132A5E
sha3_384: 1c344dacdd0eca54ecbe04306dc850d0b9d76634590df93a46e6affebd58d94fc32b9c5b56904a75905ff4a250f8e24e
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.