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: D61821D02CCFDF24E0D9.mlw
path: /opt/CAPEv2/storage/binaries/47494b9c0094c256be7ba9692328831c450ea2c2f1d0b7b8e8c5d590b6c60735
crc32: B70AC506
md5: d61821d02ccfdf24e0d9e788fb0ca046
sha1: 4397e560f7685c684c01bbbb5cac436f87ade818
sha256: 47494b9c0094c256be7ba9692328831c450ea2c2f1d0b7b8e8c5d590b6c60735
sha512: cb07bee642e7c5524f3f99feee5964c47444c5edc4fd9a7c9142a31a5d4199e2a50964f7ba8627726b8a40c91663f8d6edc66f0e08c5531bf0220423176bd773
ssdeep: 12288:nG5knZfFKerN8CGWoOKDtjMF3+nG4nsCGKZ+d+hSOjn4ZSVbsFGxMwc:nG50ZfFKUvoOMsGsClZ+dnOMZabsiMJ
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11CC4F1123EE58575D4420031D9B46EA2E2F9FE560E21486333983E3E7F7E687D235A2D
sha3_384: a46aa04af131e1fc93b06e34fe265f6c6ec361133d063717577c7726fbc2a57a5a68e62e200f706a7fadde4e2bd55642
ep_bytes: 558bec6aff68e8b9410068fc47410064
timestamp: 2011-04-18 18:54:06

Version Info:
FileVersion: 12.901.4.1003
ProductVersion: 12.901.4.1003
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.