Categories: Malware

About “Downloader.OfferGenerator” infection

The Downloader.OfferGenerator 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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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Downloader.OfferGenerator virus can do?

  • Executable code extraction
  • Presents an Authenticode digital signature
  • Possible date expiration check, exits too soon after checking local time
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Attempts to connect to a dead IP:Port (6 unique times)
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • Expresses interest in specific running processes
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Uses Windows utilities for basic functionality
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Installs itself for autorun at Windows startup
  • Exhibits possible ransomware file modification behavior
  • Collects information about installed applications
  • Creates a hidden or system file
  • Attempts to identify installed AV products by registry key
  • Detects the presence of Wine emulator via registry key
  • Checks the version of Bios, possibly for anti-virtualization
  • Checks the CPU name from registry, possibly for anti-virtualization
  • Attempts to modify proxy settings
  • Attempts to create or modify system certificates
  • Collects information to fingerprint the system

Related domains:

z.whorecord.xyz
a.tomx.xyz
ocsp.digicert.com
flow.lavasoft.com
sos.adaware.com
offerservicefallback.blob.core.windows.net
router.bittorrent.com
router.utorrent.com
update.utorrent.li
sr.symcd.com

How to determine Downloader.OfferGenerator?


File Info:

crc32: A4B44E89md5: c182559f4c69a19fdf515db174a9a85dname: utorrent_3.5.5.45311.exesha1: ff190ca4f7e75aabf80d58d5b785bfb107313e34sha256: 080ae270b766017b3080126f4116e4c615697b9728af8372051cde32ccaeb06csha512: b5e07daae0db78fdf337da50f435109524f06327a2dc8757fb81d86c6d8c04423515357e0c6b623bb74c651bedd2705033c981950f3898c495260323bd7a30c0ssdeep: 98304:cG5QgkB5McIpyqjH+JUkw72wanLsNz1c7G:cG5q6cCPjHsUV72wBJWGtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa92019 BitTorrent, Inc. All Rights Reserved.InternalName: uTorrent.exeFileVersion: 3.5.5.45311CompanyName: BitTorrent Inc.ProductName: xb5TorrentProductVersion: 3.5.5.45311FileDescription: xb5TorrentOriginalFilename: uTorrent.exeTranslation: 0x0409 0x04b0

Downloader.OfferGenerator also known as:

Cylance Unsafe
K7AntiVirus Unwanted-Program ( 005365851 )
K7GW Unwanted-Program ( 005365851 )
Cyren W32/Application.JIUZ-0753
ESET-NOD32 a variant of Win32/uTorrent.C potentially unwanted
GData Win32.Application.WebCompanion.F
Paloalto generic.ml
Sophos Generic PUA BO (PUA)
DrWeb Program.Unwanted.3640
Invincea heuristic
Antiy-AVL GrayWare/Win32.Generic
Microsoft PUA:Win32/uTorrent
VBA32 Downloader.OfferGenerator
Malwarebytes PUP.Optional.BundleInstaller
Rising PUA.Presenoker!8.F608 (CLOUD)
MaxSecure Trojan.Malware.74244087.susgen

How to remove Downloader.OfferGenerator?

  • 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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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