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c21vyn5.exe

Pavel KRASNOV

This installer (utilizes the InstalleRex from WebPick) is designed to bundle additional software offerings such as adware and malware, mostly web browser extensions in the download manager, with minimal user consent. In most cases the setup process will install a browser extension for IE, Chrome and Firefox by default. The application c21vyn5.exe by Pavel KRASNOV has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application.
Publisher:
Pavel KRASNOV  (signed and verified)

MD5:
1e04c2393c284b2f7b039b45340fc415

SHA-1:
c5ed1be4f144ac802b7414e544bed1dc5c4553ff

SHA-256:
79fb6e2495bfc21edc72de8c5c5a909500873487b72b3a8a7ecf362a4bf10ca4

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Bundles additional adware offers in the installer/setup process.

Analysis date:
4/18/2024 3:08:51 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.PavelKRASNOV (M)
16.2.7.1

File size:
1.3 MB (1,346,488 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\c21vyn5.exe

Digital Signature
Signed by:
Pavel KRASNOV

Authority:
Unizeto Technologies S.A.

Valid from:
1/16/2014 11:46:29 PM

Valid to:
1/16/2015 11:46:29 PM

Subject:
E=pavel0125@hotmail.com, CN="Open Source Developer, Pavel KRASNOV", O=Pavel KRASNOV, C=RU

Issuer:
CN=Certum Level III CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
145B82E22CCF1D1A2268198D76B51075

File PE Metadata
Compilation timestamp:
1/22/2014 1:38:14 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
24576:pTgAaiZKUuUNmLkeYAK0dYAheaR3DBuJRtciZGjDMnSkZon+vJ76Yy:giZ7zNUkzALmAhhDewtXuShn09y

Entry address:
0xDC0B

Entry point:
E8, 7E, 44, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, B8, DC, 41, 00, E8, DF, 12, 00, 00, E8, CB, 0F, 00, 00, 0F, B7, F0, 6A, 02, E8, 11, 44, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 96, 01, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
7.9269  (probably packed)

Code size:
87 KB (89,088 bytes)

The file c21vyn5.exe has been seen being distributed by the following URL.

http://fastapplicationmy.ru/?e=88fe7&publisher=356&country=US&prv=GrtSCouponApp&ind=1250037614370599&exid=1390750479747272249&ssd=14957093892322215921&hid=4638476902758157475&osid=601&channel=0&sfx=1&category_name=GreatSaverCouponApp&install_date=20130126

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to i1.stylefun.info  (198.7.61.118:80)

TCP (HTTP):
Connects to dl.softservers.net  (184.154.145.171:80)

TCP (HTTP):
Connects to c1.getapplicationmy.info  (54.201.215.30:80)

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