PUP.Optional.WebCompanion (file analysis)

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: 11C2604F4D7E3E1CFE6A.mlw
path: /opt/CAPEv2/storage/binaries/8a1c701228a2f1b6a6d5c7e761bdc22662a115170c0ff704de458cd376fdbd24
crc32: A54FBF7A
md5: 11c2604f4d7e3e1cfe6a6c96e17aa879
sha1: fe999bf8acda1a0cc5be80bb443e90bf543c6785
sha256: 8a1c701228a2f1b6a6d5c7e761bdc22662a115170c0ff704de458cd376fdbd24
sha512: fec941ddea58acbf0be371568943fcd3ccaaa026e58a2446d94c3afcf2a4abd2dffd5ec830377d0c0839d9691d203cd80da229cee1a6d91788b4c04e5ec580a8
ssdeep: 12288:/G5knZfFKerp6pW21Cg/f35Q5911xbBBKTYGXYm4FYoZHYtIaJ:/G50ZfFKU4w21XX3EN3K3J4DgIaJ
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11EC4F1127EE189BAD5420131C974AFE5E2F6FE161E21546333993E3E3F3A542C132A5E
sha3_384: 31d72528355e7762989a937527078917c9019c8ffc7e8066e5c0c6e40a413966bd16d07f39d2e7bf604328e0f66e8fa4
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.